VRB-TO-PRB ALLOCATION FOR DISJOINT BWP SEGMENTS
20230135832 · 2023-05-04
Inventors
- Ahmed Attia ABOTABL (San Diego, CA, US)
- Muhammad Sayed Khairy ABDELGHAFFAR (San Jose, CA, US)
- Gabi Sarkis (San Diego, CA)
- Alexandros Manolakos (Escondido, CA)
- Seyedkianoush HOSSEINI (San Diego, CA, US)
- Yi Huang (San Diego, CA)
- Wanshi Chen (San Diego, CA)
- Krishna Kiran Mukkavilli (San Diego, CA)
Cpc classification
H04L5/14
ELECTRICITY
International classification
H04L1/00
ELECTRICITY
Abstract
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless node may determine, within a sub-band full duplex (SBFD) slot, an allocation of first and second virtual resource block (VRB) groups to physical resource blocks (PRBs) across first and second disjoint bandwidth part (BWP) segments based upon one or more VRB-to-PRB mapping rules, and may communicate data over the first and second sets of PRBs in accordance with the allocation.
Claims
1. A method of operating a wireless node, comprising: determining, within a sub-band full duplex (SBFD) slot, an allocation of first and second virtual resource block (VRB) groups to physical resource blocks (PRBs) across first and second disjoint bandwidth part (BWP) segments based upon one or more VRB-to-PRB mapping rules; and communicating data over the first and second sets of PRBs in accordance with the allocation.
2. The method of claim 1, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment without interleaving, or mapping the second VRB to a second disjoint BWP segment without interleaving, or a combination thereof.
3. The method of claim 1, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment with interleaving, and mapping the second VRB to a second disjoint BWP segment with interleaving that is independent relative to the interleaving associated with the first disjoint BWP segment.
4. The method of claim 1, wherein the one or more VRB-to-PRB mapping rules comprise mapping a respective VRB to a respective disjoint BWP segment with interleaving if the respective disjoint BWP segment is above a size threshold and without interleaving if the respective disjoint BWP segment is not above the size threshold.
5. The method of claim 1, wherein the one or more VRB-to-PRB mapping rules comprise merging the first and second VRB groups, and then mapping the merged VRB group to the first and second disjoint BWP parts with interleaving.
6. The method of claim 1, wherein the one or more VRB-to-PRB mapping rules comprise jointly interleaving the first and second VRBs across the first and second disjoint BWP segments.
7. The method of claim 6, wherein the allocation of the first and second PRBs is across the first and second disjoint BWP segments only such that an intervening BWP segment is bypassed.
8. The method of claim 6, wherein the allocation of the first and second VRBs is across PRBs that overlap with an intervening BWP segment between the first and second disjoint BWP segments.
9. The method of claim 8, wherein the first and second disjoint BWP segments comprise downlink (DL) data, wherein the intervening BWP segment comprises a guard band (GB), uplink (UL) data, or a combination thereof.
10. The method of claim 9, wherein DL data is omitted from the intervening BWP segment, or wherein a user equipment (UE) associated with the overlapping VRB performs rate-matching on respective PRBs of the intervening BWP segment, or wherein each VRB is associated with a priority, and DL data is assumed by the UE to be present only with respect to an overlapping VRB associated with a highest priority, or wherein the overlap is interpreted as an error condition at the UE, or wherein the overlap is interpreted as cycling repetition at the UE, or any combination thereof.
11. The method of claim 9, wherein the DL data in the first and second disjoint BWP segments is scheduled via a single resource indicator value (RIV) with a startpoint and length indicator that encompasses the intervening BWP segment.
12. The method of claim 1, wherein the wireless node corresponds to a base station, or wherein the wireless node corresponds to a user equipment (UE).
13. A wireless node, comprising: means for determining, within a sub-band full duplex (SBFD) slot, an allocation of first and second virtual resource block (VRB) groups to physical resource blocks (PRBs) across first and second disjoint bandwidth part (BWP) segments based upon one or more VRB-to-PRB mapping rules; and means for communicating data over the first and second sets of PRBs in accordance with the allocation.
14. The wireless node of claim 13, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment without interleaving, or mapping the second VRB to a second disjoint BWP segment without interleaving, or a combination thereof.
15. The wireless node of claim 13, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment with interleaving, and mapping the second VRB to a second disjoint BWP segment with interleaving that is independent relative to the interleaving associated with the first disjoint BWP segment.
16. The wireless node of claim 13, wherein the one or more VRB-to-PRB mapping rules comprise mapping a respective VRB to a respective disjoint BWP segment with interleaving if the respective disjoint BWP segment is above a size threshold and without interleaving if the respective disjoint BWP segment is not above the size threshold.
17. The wireless node of claim 13, wherein the one or more VRB-to-PRB mapping rules comprise merging the first and second VRB groups, and then mapping the merged VRB group to the first and second disjoint BWP parts with interleaving.
18. The wireless node of claim 13, wherein the one or more VRB-to-PRB mapping rules comprise jointly interleaving the first and second VRBs across the first and second disjoint BWP segments.
19. The wireless node of claim 18, wherein the allocation of the first and second PRBs is across the first and second disjoint BWP segments only such that an intervening BWP segment is bypassed.
20. The wireless node of claim 18, wherein the allocation of the first and second VRBs is across PRBs that overlap with an intervening BWP segment between the first and second disjoint BWP segments.
21. The wireless node of claim 20, wherein the first and second disjoint BWP segments comprise downlink (DL) data, wherein the intervening BWP segment comprises a guard band (GB), uplink (UL) data, or a combination thereof.
22. The wireless node of claim 21, wherein DL data is omitted from the intervening BWP segment, or wherein a user equipment (UE) associated with the overlapping VRB performs rate-matching on respective PRBs of the intervening BWP segment, or wherein each VRB is associated with a priority, and DL data is assumed by the UE to be present only with respect to an overlapping VRB associated with a highest priority, or wherein the overlap is interpreted as an error condition at the UE, or wherein the overlap is interpreted as cycling repetition at the UE, or any combination thereof.
23. The wireless node of claim 21, wherein the DL data in the first and second disjoint BWP segments is scheduled via a single resource indicator value (RIV) with a startpoint and length indicator that encompasses the intervening BWP segment.
24. The wireless node of claim 13, wherein the wireless node corresponds to a base station, or wherein the wireless node corresponds to a user equipment (UE).
25. A wireless node, comprising: a memory; and at least one processor coupled to the memory and configured to: determine, within a sub-band full duplex (SBFD) slot, an allocation of first and second virtual resource block (VRB) groups to physical resource blocks (PRBs) across first and second disjoint bandwidth part (BWP) segments based upon one or more VRB-to-PRB mapping rules; and communicate data over the first and second sets of PRBs in accordance with the allocation.
26. The wireless node of claim 25, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment without interleaving, or mapping the second VRB to a second disjoint BWP segment without interleaving, or a combination thereof.
27. The wireless node of claim 25, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment with interleaving, and mapping the second VRB to a second disjoint BWP segment with interleaving that is independent relative to the interleaving associated with the first disjoint BWP segment.
28. The wireless node of claim 25, wherein the one or more VRB-to-PRB mapping rules comprise mapping a respective VRB to a respective disjoint BWP segment with interleaving if the respective disjoint BWP segment is above a size threshold and without interleaving if the respective disjoint BWP segment is not above the size threshold.
29. The wireless node of claim 25, wherein the one or more VRB-to-PRB mapping rules comprise merging the first and second VRB groups, and then mapping the merged VRB group to the first and second disjoint BWP parts with interleaving.
30. The wireless node of claim 25, wherein the one or more VRB-to-PRB mapping rules comprise jointly interleaving the first and second VRBs across the first and second disjoint BWP segments.
31. The wireless node of claim 30, wherein the allocation of the first and second PRBs is across the first and second disjoint BWP segments only such that an intervening BWP segment is bypassed.
32. The wireless node of claim 30, wherein the allocation of the first and second VRBs is across PRBs that overlap with an intervening BWP segment between the first and second disjoint BWP segments.
33. The wireless node of claim 32, wherein the first and second disjoint BWP segments comprise downlink (DL) data, wherein the intervening BWP segment comprises a guard band (GB), uplink (UL) data, or a combination thereof.
34. The wireless node of claim 33, wherein DL data is omitted from the intervening BWP segment, or wherein a user equipment (UE) associated with the overlapping VRB performs rate-matching on respective PRBs of the intervening BWP segment, or wherein each VRB is associated with a priority, and DL data is assumed by the UE to be present only with respect to an overlapping VRB associated with a highest priority, or wherein the overlap is interpreted as an error condition at the UE, or wherein the overlap is interpreted as cycling repetition at the UE, or any combination thereof.
35. The wireless node of claim 33, wherein the DL data in the first and second disjoint BWP segments is scheduled via a single resource indicator value (RIV) with a startpoint and length indicator that encompasses the intervening BWP segment.
36. The wireless node of claim 25, wherein the wireless node corresponds to a base station, or wherein the wireless node corresponds to a user equipment (UE).
37. A non-transitory computer-readable medium containing instructions stored thereon, for causing at least one processor in a wireless node to: determine, within a sub-band full duplex (SBFD) slot, an allocation of first and second virtual resource block (VRB) groups to physical resource blocks (PRBs) across first and second disjoint bandwidth part (BWP) segments based upon one or more VRB-to-PRB mapping rules; and communicate data over the first and second sets of PRBs in accordance with the allocation.
38. The non-transitory computer-readable medium of claim 37, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment without interleaving, or mapping the second VRB to a second disjoint BWP segment without interleaving, or a combination thereof.
39. The non-transitory computer-readable medium of claim 37, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment with interleaving, and mapping the second VRB to a second disjoint BWP segment with interleaving that is independent relative to the interleaving associated with the first disjoint BWP segment.
40. The non-transitory computer-readable medium of claim 37, wherein the one or more VRB-to-PRB mapping rules comprise mapping a respective VRB to a respective disjoint BWP segment with interleaving if the respective disjoint BWP segment is above a size threshold and without interleaving if the respective disjoint BWP segment is not above the size threshold.
41. The non-transitory computer-readable medium of claim 37, wherein the one or more VRB-to-PRB mapping rules comprise merging the first and second VRB groups, and then mapping the merged VRB group to the first and second disjoint BWP parts with interleaving.
42. The non-transitory computer-readable medium of claim 37, wherein the one or more VRB-to-PRB mapping rules comprise jointly interleaving the first and second VRBs across the first and second disjoint BWP segments.
43. The non-transitory computer-readable medium of claim 42, wherein the allocation of the first and second PRBs is across the first and second disjoint BWP segments only such that an intervening BWP segment is bypassed.
44. The non-transitory computer-readable medium of claim 42, wherein the allocation of the first and second VRBs is across PRBs that overlap with an intervening BWP segment between the first and second disjoint BWP segments.
45. The non-transitory computer-readable medium of claim 44, wherein the first and second disjoint BWP segments comprise downlink (DL) data, wherein the intervening BWP segment comprises a guard band (GB), uplink (UL) data, or a combination thereof.
46. The non-transitory computer-readable medium of claim 45, wherein DL data is omitted from the intervening BWP segment, or wherein a user equipment (UE) associated with the overlapping VRB performs rate-matching on respective PRBs of the intervening BWP segment, or wherein each VRB is associated with a priority, and DL data is assumed by the UE to be present only with respect to an overlapping VRB associated with a highest priority, or wherein the overlap is interpreted as an error condition at the UE, or wherein the overlap is interpreted as cycling repetition at the UE, or any combination thereof.
47. The non-transitory computer-readable medium of claim 45, wherein the DL data in the first and second disjoint BWP segments is scheduled via a single resource indicator value (RIV) with a startpoint and length indicator that encompasses the intervening BWP segment.
48. The non-transitory computer-readable medium of claim 37, wherein the wireless node corresponds to a base station, or wherein the wireless node corresponds to a user equipment (UE).
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] So that the above-recited features of the present disclosure can be understood in detail, a more particular description, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.
[0016]
[0017]
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[0019]
[0020]
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[0022]
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[0026]
DETAILED DESCRIPTION
[0027] Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein one skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method which is practiced using other structure, functionality, or structure and functionality in addition to or other than the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim.
[0028] Several aspects of telecommunication systems will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, and/or the like (collectively referred to as “elements”). These elements may be implemented using hardware, software, or combinations thereof Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.
[0029] It should be noted that while aspects may be described herein using terminology commonly associated with 3G and/or 4G wireless technologies, aspects of the present disclosure can be applied in other generation-based communication systems, such as 5G and later, including NR technologies.
[0030]
[0031] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having association with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In the example shown in
[0032] In some aspects, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS. In some aspects, the BSs may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and/or the like using any suitable transport network.
[0033] Wireless network 100 may also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. In the example shown in
[0034] Wireless network 100 may be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and/or the like. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100. For example, macro BSs may have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 Watts).
[0035] A network controller 130 may couple to a set of BSs and may provide coordination and control for these BSs. Network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with one another, e.g., directly or indirectly via a wireless or wireline backhaul.
[0036] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, and/or the like. A UE may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.
[0037] Some UEs may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, and/or the like, that may communicate with a base station, another device (e.g., remote device), or some other entity. A wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband interne of things) devices. Some UEs may be considered a Customer Premises Equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as processor components, memory components, and/or the like. In some aspects, the processor components and the memory components may be coupled together. For example, the processor components (e.g., one or more processors) and the memory components (e.g., a memory) may be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, and/or the like.
[0038] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies. A RAT may also be referred to as a radio technology, an air interface, and/or the like. A frequency may also be referred to as a carrier, a frequency channel, and/or the like. Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.
[0039] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using a base station 110 as an intermediary to communicate with one another). For example, the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, and/or the like), a mesh network, and/or the like. In this case, the UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the base station 110.
[0040] As indicated above,
[0041]
[0042] At base station 110, a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS(s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and/or the like) and control information (e.g., CQI requests, grants, upper layer signaling, and/or the like) and provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS)) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in more detail below, the synchronization signals can be generated with location encoding to convey additional information.
[0043] At UE 120, antennas 252a through 252r may receive the downlink signals from base station 110 and/or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM and/or the like) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller/processor 280. A channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), and/or the like. In some aspects, one or more components of UE 120 may be included in a housing.
[0044] On the uplink, at UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) from controller/processor 280. Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, and/or the like), and transmitted to base station 110. At base station 110, the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller/processor 240. Base station 110 may include communication unit 244 and communicate to network controller 130 via communication unit 244. Network controller 130 may include communication unit 294, controller/processor 290, and memory 292.
[0045] Controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component(s) of
[0046] As indicated above,
[0047]
[0048] A communication link between a UE and a BS may be referred to as half-duplex when the communication link includes only one of an uplink or a downlink or full-duplex when the communication link includes an uplink and a downlink. A full-duplex communication link may provide increased scalability of data rates on the link in comparison to a half-duplex communication link. In a full-duplex communication link, different antenna elements, sub-arrays, or antenna panels of a wireless communication device may simultaneously or contemporaneously perform uplink and downlink communication.
[0049] Full-duplex communication may present certain challenges in comparison to half-duplex communication. For example, a wireless communication device (e.g., a UE, a BA, and/or a wireless node) may experience self-interference between an uplink beam and a downlink beam of a full-duplex link or between components of the wireless communication device. This self-interference may complicate the monitoring of reference signals to detect beam failure. Furthermore, self-interference, cross-correlation, and/or the like, may occur in a full-duplex communication link that may not occur in a half-duplex communication link. Additionally, a wireless communication device may experience interfering transmissions from other wireless communication devices (e.g., based at least in part on an angular spread of a beam transmitted by the other wireless communication devices) in the wireless network that may cause a beam failure (e.g., an uplink beam failure, a downlink beam failure, and/or the like)
[0050] As shown in
[0051] As shown in
[0052] As shown in
[0053] As indicated above,
[0054]
[0055] As shown in
[0056] In some aspects, a full-duplex mode may be a sub-band frequency division duplex (FDD) mode (e.g., a mode that includes an uplink and a downlink that share the same time resources, and use different frequency resources). In some aspects, the resources associated with the downlink and the resources associated with the uplink may be separated in the frequency domain by a guard band (GB) (e.g., a range of frequencies that are not allocated to the uplink or the downlink).
[0057] As indicated above,
[0058] A wireless communication standard or governing body may specify how a wireless spectrum is to be used. For example, 3GPP may specify how wireless spectrum is to be used for the 5G/NR radio access technology and interface. As an example, a specification may indicate whether a band is to be used as paired spectrum or unpaired spectrum. A band in a paired spectrum may use a first frequency region for uplink communication and a second frequency region for downlink communication, where the first frequency region does not overlap the second frequency region. For example, a paired band may have an uplink operating band and a downlink operating band that are configured to use non-overlapped frequency regions. Some deployments may use frequency division duplexing (FDD) in the paired bands. Examples of paired bands in NR include NR operating bands n1, n2, n3, n5, n7, n8, n12, n20, n25, and n28, as specified by 3GPP Technical Specification (TS) 38.101-1.
[0059] An unpaired band may allow downlink and uplink operations within a same frequency region (e.g., a same operating band). For example, an unpaired band may configure an uplink operating band and a downlink operating band in the same frequency range. Some deployments may use time division duplexing (TDD) in the unpaired band, where some time intervals (e.g., slots, sub-slots, and/or the like) are used for uplink communications and other time intervals are used for downlink communications. In this case, substantially the entire bandwidth of a component carrier may be used for a downlink communication or an uplink communication, depending on whether the communication is performed in a downlink slot, an uplink slot, or a special slot (in which downlink or uplink communications can be scheduled). Examples of unpaired bands include NR operating bands n40, n41, and n50, as specified by 3GPP TS 38.101-1.
[0060] In some cases, it may be inefficient to use TDD in an unpaired spectrum. For example, uplink transmit power may be limited, meaning that UEs may not be capable of transmitting with enough power to efficiently utilize the full bandwidth of an uplink slot. This may be particularly problematic in large cells at the cell edge. Furthermore, the usage of TDD may introduce latency relative to a scheme in which uplink communications and downlink communications can be performed in the same time interval, since a given time interval may be used for only uplink communication or for only downlink communication using TDD. However, frequency domain resource assignment (FDRA) for a bandwidth part (BWP) in the case of FDD in an unpaired spectrum may be problematic due to a gap between a first frequency region of the FDRA and a second frequency region of the FDRA (e.g., due to the BWP being disjointed).
[0061]
[0062]
[0063] In
[0064] In some designs, the allocation of frequency resources in slots 805 and 810 may be indicated via a frequency domain resource allocation (FDRA) from the base station. For example, the FDRA may be identified in a downlink control information (DCI) field. The DCI may be formatted according to a technical standard, such as 3GPP TS 38.212 V15 (e.g., format 0_1 for scheduling a physical uplink shared channel (PUSCH), formation 1_0 for scheduling a physical downlink shared channel (PDSCH), and/or the like).
[0065] The FDRA may identify frequency resource explicitly via a bitmap (Type 0) or via reference to a range of RBs (Type 1). For Type 0 allocation, in some aspects, each bit of the bit map may correspond to an RB group (RGB) of a plurality of RBGs in the BWP. Each bit of the bit map may identify if an RBG associated with the bit is allocated in the FDRA. For example, if the bit is assigned a value of ‘0’, the bit may identify that the RBG associated with the bit is not allocated. If the bit is assigned a value of ‘1’, the bit may identify that the RBG associated with the bit is allocated. In some designs, the size of the bitmap may be either 9 bits or 18 bits. However, if there is a relatively large gap between the first and second disjoint BWP DL segments, the bitmap indication may become unpractical due to inefficiency.
[0066] For Type 1 allocation, consecutive (or contiguous) RBs are identified in association with a resource indicator value (RIV) via designation of a startpoint (RB.sub.start) and a size (or length) indicator, as follows:
if (L.sub.RBs−1)≤└N.sub.BWP.sup.size/2┘ then
RIV=N.sub.BWP.sup.size(L.sub.RBs−1)+RB.sub.start
else
RIV=N.sub.BWP.sup.size(N.sub.BWP.sup.size−L.sub.RBs÷1)+(N.sub.BWP.sup.size−1−RB.sub.start)
[0067] Because Type 1 allocation identifies a BWP segment via start and length indicators in terms of RIV, it is difficult to use Type 1 allocation to reference disjoint BWP segments for SBFD. In particular, attempting to use Type 1 allocation to span across both disjoint BWP segments (e.g., DL BWP segments) will cause the indicated BWP to include the intervening BWP segment (e.g., UL BWP segment). Alternatively, each disjoint BWP segment can be identified via its own RIV and its own separate start and length indicators, which may increase overhead and complexity.
[0068] Further, at the gNB scheduler, a first virtual RB (VRB) group may be associated with a first disjoint BWP segment, while a virtual VRB group may be associated with a second disjoint BWP segment. VRB groups are typically mapped to physical RBs (PRBs) in accordance with a VRB-to-PRB mapping rule for one particular set of contiguous PRBs, and not multiple disjointed sets of PRBs (or BWP segments) which occur with respect to SBFD slots as noted above.
[0069] Aspects of the present disclosure are directed to an allocation of VRB groups to PRB across disjoint BWP segments based upon one or more VRB-to-PRB mapping rules for an SBFD slot. The aspects describe below provide various technical advantages, such as leveraging SBFD so as to provide Rx-WOLA to reduce ACLR leakage to the UL signal, analog LPF to improve ADC dynamic range, Rx-AGC states to improve the NF, and so on.
[0070]
[0071] At 902, the wireless node (e.g., controller/processor 280, controller/processor 240, scheduler 246, etc.) determines within a SBFD slot, an allocation of first and second VRB groups to PRBs across first and second BWP segments based upon one or more VRB-to-PRB mapping rules. As will be discussed in more detail below, the VRB-to-PRB mapping rule(s) may comprise a manner in which the VRB groups are interleaved (or not interleaved) across the first and second BWP segments, and possibly a separate intervening BWP segment. In an example, if the wireless node corresponds to a UE, then the determination at 902 may occur at the controller/processor 280 where the FDRA is processed. In another example, if the wireless node corresponds to a UE, then the determination at 902 may occur at the controller/processor 240 and/or the scheduler 246 where the VRB-to-PRB mapping is implemented. In some systems such as 5G, the first and second disjoint BWP DL segments may correspond to sub-BWP segments.
[0072] At 904, the wireless node (e.g., antennas 252a . . . 252r, modulator/demodulator 254a . . . 254r, MIMO detector 256, receive processor 258, Tx MIMO processor 266, transmit processor 264, antennas 234a . . . 234r, modulator/demodulator 232a . . . 232r, MIMO detector 236, receive processor 238, Tx MIMO processor 230, transmit processor 220, etc.) communicates data over the first and second sets of PRBs in accordance with the allocation. In an example, if the wireless node corresponds to a UE, then the communicating at 904 may comprise transmitting uplink data, receiving downlink data, or a combination thereof. In another example, if the wireless node corresponds to a BS, then the communicating at 904 may comprise transmitting downlink data, receiving uplink data, or a combination thereof
[0073] Referring to
[0074] Referring to
[0075] Referring to
[0076] Referring to
[0077] Referring to
[0078] There are various ways in which the wireless node (which may correspond to UE or BS) may handle such an overlap, including but not limited to: [0079] omitting DL data from the intervening BWP segment, or [0080] performing rate-matching (at the UE associated with the overlapping VRB) on its respective allocated PRBs of the intervening BWP segment (e.g., instead of actively decoding the traffic data such as PDSCH). [0081] associating each VRB is associated with a priority, and DL data is assumed by a respective UE to be present only with respect to an overlapping VRB associated with a highest priority, or [0082] interpreting an overlap as an error condition at the UE, or [0083] interpreting an overlap as a cycling repetition at the UE, or [0084] any combination thereof.
[0085]
[0086] Referring to
[0087]
[0088] The apparatus 1502 includes a transmission component 1504, which may correspond to transmitter circuitry in UE 120 as depicted in
[0089] The apparatus 1580 includes a reception component 1582, which may correspond to receiver circuitry in BS 110 as depicted in
[0090] Referring to
[0091] One or more components of the apparatus 1502 and apparatus 1580 may perform each of the blocks of the algorithm in the aforementioned flowchart of
[0092]
[0093] The processing system 1614 may be coupled to a transceiver 1610. The transceiver 1610 is coupled to one or more antennas 1620. The transceiver 1610 provides a means for communicating with various other apparatus over a transmission medium. The transceiver 1610 receives a signal from the one or more antennas 1620, extracts information from the received signal, and provides the extracted information to the processing system 1614, specifically the reception component 1508. In addition, the transceiver 1610 receives information from the processing system 1614, specifically the transmission component 1504, and based on the received information, generates a signal to be applied to the one or more antennas 1620. The processing system 1614 includes a processor 1604 coupled to a computer-readable medium/memory 1606. The processor 1604 is responsible for general processing, including the execution of software stored on the computer-readable medium/memory 1606. The software, when executed by the processor 1604, causes the processing system 1614 to perform the various functions described supra for any particular apparatus. The computer-readable medium/memory 1606 may also be used for storing data that is manipulated by the processor 1604 when executing software. The processing system 1614 further includes at least one of the components 1504, 1506 and 1508. The components may be software components running in the processor 1604, resident/stored in the computer readable medium/memory 1606, one or more hardware components coupled to the processor 1604, or some combination thereof. The processing system 1614 may be a component of the UE 120 of
[0094] In one configuration, the apparatus 1502 (e.g., a UE) for wireless communication includes means for determining, within a sub-band full duplex (SBFD) slot, an allocation of first and second virtual resource block (VRB) groups to physical resource blocks (PRBs) across first and second disjoint bandwidth part (BWP) segments based upon one or more VRB-to-PRB mapping rules, and means for communicating data over the first and second sets of PRBs in accordance with the allocation.
[0095] The aforementioned means may be one or more of the aforementioned components of the apparatus 1502 and/or the processing system 1614 of the apparatus 1502 configured to perform the functions recited by the aforementioned means. As described supra, the processing system 1614 may include the TX processor 264, the RX processor 258, and the controller/processor 280.
[0096]
[0097] The processing system 1714 may be coupled to a transceiver 1710. The transceiver 1710 is coupled to one or more antennas 1720. The transceiver 1710 provides a means for communicating with various other apparatus over a transmission medium. The transceiver 1710 receives a signal from the one or more antennas 1720, extracts information from the received signal, and provides the extracted information to the processing system 1714, specifically the reception component 1582. In addition, the transceiver 1710 receives information from the processing system 1714, specifically the transmission component 1586, and based on the received information, generates a signal to be applied to the one or more antennas 1720. The processing system 1714 includes a processor 1704 coupled to a computer-readable medium/memory 1706. The processor 1704 is responsible for general processing, including the execution of software stored on the computer-readable medium/memory 1706. The software, when executed by the processor 1704, causes the processing system 1714 to perform the various functions described supra for any particular apparatus. The computer-readable medium/memory 1706 may also be used for storing data that is manipulated by the processor 1704 when executing software. The processing system 1714 further includes at least one of the components 1582, 1584 and 1586. The components may be software components running in the processor 1704, resident/stored in the computer readable medium/memory 1706, one or more hardware components coupled to the processor 1704, or some combination thereof. The processing system 1714 may be a component of the BS 110 of
[0098] In one configuration, the apparatus 1580 (e.g., a BS) for wireless communication includes means for determining, within a sub-band full duplex (SBFD) slot, an allocation of first and second virtual resource block (VRB) groups to physical resource blocks (PRBs) across first and second disjoint bandwidth part (BWP) segments based upon one or more VRB-to-PRB mapping rules, and means for communicating data over the first and second sets of PRBs in accordance with the allocation.
[0099] The aforementioned means may be one or more of the aforementioned components of the apparatus 1580 and/or the processing system 1714 of the apparatus 1580 configured to perform the functions recited by the aforementioned means. As described supra, the processing system 1714 may include the TX processor 220, the RX processor 238, and the controller/processor 240.
[0100] In the detailed description above it can be seen that different features are grouped together in examples. This manner of disclosure should not be understood as an intention that the example clauses have more features than are explicitly mentioned in each clause. Rather, the various aspects of the disclosure may include fewer than all features of an individual example clause disclosed. Therefore, the following clauses should hereby be deemed to be incorporated in the description, wherein each clause by itself can stand as a separate example. Although each dependent clause can refer in the clauses to a specific combination with one of the other clauses, the aspect(s) of that dependent clause are not limited to the specific combination. It will be appreciated that other example clauses can also include a combination of the dependent clause aspect(s) with the subject matter of any other dependent clause or independent clause or a combination of any feature with other dependent and independent clauses. The various aspects disclosed herein expressly include these combinations, unless it is explicitly expressed or can be readily inferred that a specific combination is not intended (e.g., contradictory aspects, such as defining an element as both an insulator and a conductor). Furthermore, it is also intended that aspects of a clause can be included in any other independent clause, even if the clause is not directly dependent on the independent clause.
[0101] Implementation examples are described in the following numbered clauses:
[0102] As used herein, the term “component” is intended to be broadly construed as hardware, firmware, and/or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and/or a combination of hardware and software.
[0103] Clause 1. A method of operating a wireless node, comprising: determining, within a sub-band full duplex (SBFD) slot, an allocation of first and second virtual resource block (VRB) groups to physical resource blocks (PRBs) across first and second disjoint bandwidth part (BWP) segments based upon one or more VRB-to-PRB mapping rules; and communicating data over the first and second sets of PRBs in accordance with the allocation.
[0104] Clause 2. The method of clause 1, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment without interleaving, or mapping the second VRB to a second disjoint BWP segment without interleaving, or a combination thereof.
[0105] Clause 3. The method of any of clauses 1 to 2, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment with interleaving, and mapping the second VRB to a second disjoint BWP segment with interleaving that is independent relative to the interleaving associated with the first disjoint BWP segment.
[0106] Clause 4. The method of any of clauses 1 to 3, wherein the one or more VRB-to-PRB mapping rules comprise mapping a respective VRB to a respective disjoint BWP segment with interleaving if the respective disjoint BWP segment is above a size threshold and without interleaving if the respective disjoint BWP segment is not above the size threshold.
[0107] Clause 5. The method of any of clauses 1 to 4, wherein the one or more VRB-to-PRB mapping rules comprise merging the first and second VRB groups, and then mapping the merged VRB group to the first and second disjoint BWP parts with interleaving.
[0108] Clause 6. The method of any of clauses 1 to 5, wherein the one or more VRB-to-PRB mapping rules comprise jointly interleaving the first and second VRBs across the first and second disjoint BWP segments.
[0109] Clause 7. The method of any of clauses 1 to 6, wherein the allocation of the first and second PRBs is across the first and second disjoint BWP segments only such that an intervening BWP segment is bypassed.
[0110] Clause 8. The method of any of clauses 1 to 7, wherein the allocation of the first and second VRBs is across PRBs that overlap with an intervening BWP segment between the first and second disjoint BWP segments.
[0111] Clause 9. The method of any of clauses 1 to 8, wherein the first and second disjoint BWP segments comprise downlink (DL) data, wherein the intervening BWP segment comprises a guard band (GB), uplink (UL) data, or a combination thereof.
[0112] Clause 10. The method of any of clauses 1 to 9, wherein DL data is omitted from the intervening BWP segment, or wherein a user equipment (UE) associated with the overlapping VRB performs rate-matching on respective PRBs of the intervening BWP segment, or wherein each VRB is associated with a priority, and DL data is assumed by the UE to be present only with respect to an overlapping VRB associated with a highest priority, or wherein the overlap is interpreted as an error condition at the UE, or wherein the overlap is interpreted as cycling repetition at the UE, or any combination thereof
[0113] Clause 11. The method of any of clauses 1 to 10, wherein the DL data in the first and second disjoint BWP segments is scheduled via a single resource indicator value (RIV) with a startpoint and length indicator that encompasses the intervening BWP segment.
[0114] Clause 12. The method of any of clauses 1 to 11, wherein the wireless node corresponds to a base station, or wherein the wireless node corresponds to a user equipment (UE).
[0115] Clause 13. The wireless node of any of clauses 1 to 12, wherein the one or more VRB-to-PRB mapping rules comprise mapping the first VRB to a first disjoint BWP segment without interleaving, or mapping the second VRB to a second disjoint BWP segment without interleaving, or a combination thereof.
[0116] Clause 14. An apparatus comprising a memory and at least one processor communicatively coupled to the memory, the memory and the at least one processor configured to perform a method according to any of clauses 1 to 13.
[0117] Clause 15. An apparatus comprising means for performing a method according to any of clauses 1 to 13.
[0118] Clause 16. A non-transitory computer-readable medium storing computer-executable instructions, the computer-executable comprising at least one instruction for causing a computer or processor to perform a method according to any of clauses 1 to 13.
[0119] As used herein, satisfying a threshold may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, and/or the like.
[0120] It will be apparent that systems and/or methods described herein may be implemented in different forms of hardware, firmware, and/or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and/or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and/or methods were described herein without reference to specific software code—it being understood that software and hardware can be designed to implement the systems and/or methods based, at least in part, on the description herein.
[0121] Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of various aspects includes each dependent claim in combination with every other claim in the claim set. A phrase referring to “at least one of” a list of items refers to any combination of those items, including single members. As an example, “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c).
[0122] No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles “a” and “an” are intended to include one or more items, and may be used interchangeably with “one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, a combination of related and unrelated items, and/or the like), and may be used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Also, as used herein, the terms “has,” “have,” “having,” and/or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.