The present specification proposes a signal processing method for changing an operating mode for configuring a physical-layer protocol data unit (PPDU). Specifically, a first station receives, from a second station, first indication information and second indication information, which indicate a change of an operating mode indicating a number of spatial streams and a channel bandwidth which are supported by the second station. The first station configures a PPDU for the second station using last received indication information of the first indication information and the second indication information. Here, the first indication information is received through an operating mode indication (OMI) field, the second indication information is received through an operating mode notification (OMN) field, and the OMI field and the OMN field are not received through the same PPDU.

In a Software Defined Network (SDN), a source SDN switch in a source geographic area generates switch performance data. The source SDN switch detects when its switch performance reaches a switch performance threshold based on its switch performance data, and in response, the source SDN switch transfers source switch information. An SDN controller receives the source switch information and selects a target SDN switch in a target geographic area based on the switch performance threshold and the source geographic area. The SDN controller transfers the source switch information to the target SDN switch in the target geographic area. The target SDN switch generates switch performance data and detects when SDN performance reaches a network performance threshold based on its switch performance data and the source switch information. The target SDN transfers SDN performance information to the SDN controller.

A high-frequency-signal transceiver circuit transmits and receives a signal between first to sixth antenna terminals and terminals near a high-frequency circuit. The high-frequency-signal transceiver circuit includes first to sixth circuits connected to the corresponding first to sixth antenna terminals. One of the first to sixth circuits transmits and receives only a signal of time division multiplexing communication.

A high-frequency-signal transceiver circuit transmits and receives a signal between first to sixth antenna terminals and terminals near a high-frequency circuit. The high-frequency-signal transceiver circuit includes first to sixth circuits connected to the corresponding first to sixth antenna terminals. One of the first to sixth circuits transmits and receives only a signal of time division multiplexing communication.

A method of controlling a codec negotiation of a gateway (1) providing a codec capability offer, e.g. OLC according to the standard H.245, for establishing a data connection (1A, NA, 5T, 12T) to a communication device (10), comprises the gateway (1) providing a DSP resource (5A, 5B) for encoding (C1E) and/or decoding (C1D) of data to be transmitted using a codec which is negotiated between the gateway (1) and the communication device (10), and controlling the gateway (1) to limit (4B1, 4B2, CA2, CA14) a selection of codecs available at the gateway (1) from at least two codecs reserving different amounts of the DSP resource (5A, 5B) respectively, to be included in the codec capability offer to a codec which reserves the least amount of the DSP resource (5A, 5B) such that the communication device (10) is forced (CA4, CA15) to select the codec which reserves the least amount of the DSP resource (5A, 5B).

A method of controlling a codec negotiation of a gateway (1) providing a codec capability offer, e.g. OLC according to the standard H.245, for establishing a data connection (1A, NA, 5T, 12T) to a communication device (10), comprises the gateway (1) providing a DSP resource (5A, 5B) for encoding (C1E) and/or decoding (C1D) of data to be transmitted using a codec which is negotiated between the gateway (1) and the communication device (10), and controlling the gateway (1) to limit (4B1, 4B2, CA2, CA14) a selection of codecs available at the gateway (1) from at least two codecs reserving different amounts of the DSP resource (5A, 5B) respectively, to be included in the codec capability offer to a codec which reserves the least amount of the DSP resource (5A, 5B) such that the communication device (10) is forced (CA4, CA15) to select the codec which reserves the least amount of the DSP resource (5A, 5B).

A data transmitter includes an encoder configured to encode first data to be transmitted, in accordance with an encoding rule and a transmitter configured to transmit the encoded first data. The encoder makes a change to the encoding rule, encodes the first data in accordance with the change in the encoding rule, and incorporates second data having content corresponding to the change in the encoding rule, into the first data.

A data transmitter includes an encoder configured to encode first data to be transmitted, in accordance with an encoding rule and a transmitter configured to transmit the encoded first data. The encoder makes a change to the encoding rule, encodes the first data in accordance with the change in the encoding rule, and incorporates second data having content corresponding to the change in the encoding rule, into the first data.

Certain aspects of the present disclosure provide techniques for multiple radio access technology (RAT) carrier aggregation (CA), such as Long Term Evolution (LTE)-New Radio (NR) CA. The method, in one example, comprises generating a first resource coordination information (RCI) comprising one or more resource coordination bitmaps indicating one or more shortened transmission time intervals (sTTIs) of a TTI assigned to the first RAT for communication, wherein the TTI comprises a plurality of sTTIs. The method further comprises transmitting a message including the first RCI to a second base station that uses a second RAT. The method further comprises receiving an acknowledgement of the message from the second base station, the acknowledgment including a second RCI comprising one or more modified resource coordination bitmaps indicating the one or more sTTIs assigned to the first RAT for communication and one or more additional sTTIs of the TTI assigned to the second RAT.

Certain aspects of the present disclosure provide techniques for multiple radio access technology (RAT) carrier aggregation (CA), such as Long Term Evolution (LTE)-New Radio (NR) CA. The method, in one example, comprises generating a first resource coordination information (RCI) comprising one or more resource coordination bitmaps indicating one or more shortened transmission time intervals (sTTIs) of a TTI assigned to the first RAT for communication, wherein the TTI comprises a plurality of sTTIs. The method further comprises transmitting a message including the first RCI to a second base station that uses a second RAT. The method further comprises receiving an acknowledgement of the message from the second base station, the acknowledgment including a second RCI comprising one or more modified resource coordination bitmaps indicating the one or more sTTIs assigned to the first RAT for communication and one or more additional sTTIs of the TTI assigned to the second RAT.