Disclosed are: a communication method for incorporating an IoT technique with a 5G communication system for supporting a higher data transmission rate than that of a 4G system or a subsequent system; and a system therefor. The present invention can be applied to intelligent services (for example, services related to smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security, safety, and the like) on the basis of a 5G communication technique and IoT-related techniques. A method for transmitting and receiving a signal by a base station in a mobile communication system comprises the steps of: receiving a handover request message including a first information related to a device-to-device (D2D) service for a handover target terminal; and allocating D2D resources to the terminal based on the handover request message. A communication method and device of the base station and network equipment in the mobile communication system, according to the present invention, can quickly provide, to the base station to which the terminal moves, a D2D service authorized indication of the terminal for a PLMN provided from the base station of a region to which the terminal moves, even though the terminal moves to the region at which the different PLMNs are provided, and can allow the terminal to endlessly use the services, since the terminal is allocated with the resources for the D2D services during the movement thereof.

The energy-savings state of a cellular network access area is determined at the cluster level where each cluster includes multi-carrier sectors having high handover attempts to one another. To determine if the cluster can transition into an energy-savings state, key performance indicators for the cluster are evaluated. Each sector-level KPIs is converted into a cluster-level KPI by taking the maximum value of the sector-level KPI across the cluster. The cluster-level KPIs can indicate that the cluster can transition into the energy-savings state when the cluster's user count and/or its capacity utilization are lower than first predetermined threshold values. The order that each frequency layer in the cluster transitions into and out of an energy-savings state is determined by the frequency layer's energy-savings priority.

The energy-savings state of a cellular network access area is determined at the cluster level where each cluster includes multi-carrier sectors having high handover attempts to one another. To determine if the cluster can transition into an energy-savings state, key performance indicators for the cluster are evaluated. Each sector-level KPIs is converted into a cluster-level KPI by taking the maximum value of the sector-level KPI across the cluster. The cluster-level KPIs can indicate that the cluster can transition into the energy-savings state when the cluster's user count and/or its capacity utilization are lower than first predetermined threshold values. The order that each frequency layer in the cluster transitions into and out of an energy-savings state is determined by the frequency layer's energy-savings priority.

In a communication method, a user equipment receives system information broadcast from a current serving cell of the user equipment and indicating frequencies different from a frequency of the current serving cell, the user equipment receives a paging signal from the current serving cell that is different from the system information and includes a request message requesting the user equipment to perform frequency redistribution in which the user equipment selects a target frequency, and performs the frequency redistribution in response to receiving the paging signal including the request message. Performing the frequency redistribution comprises the user equipment measuring quality of the frequencies included in the system information received from the current serving cell in response to receiving the paging signal including the request message, and selecting the target frequency based on a result of the measuring. The user equipment reselects a serving cell on the selected target frequency.

In a communication method, a user equipment receives system information broadcast from a current serving cell of the user equipment and indicating frequencies different from a frequency of the current serving cell, the user equipment receives a paging signal from the current serving cell that is different from the system information and includes a request message requesting the user equipment to perform frequency redistribution in which the user equipment selects a target frequency, and performs the frequency redistribution in response to receiving the paging signal including the request message. Performing the frequency redistribution comprises the user equipment measuring quality of the frequencies included in the system information received from the current serving cell in response to receiving the paging signal including the request message, and selecting the target frequency based on a result of the measuring. The user equipment reselects a serving cell on the selected target frequency.

Methods and apparatus for providing quasi-licensed spectrum access within an area or venue. In one embodiment, the quasi-licensed spectrum utilizes 3.5 GHz CBRS (Citizens Broadband Radio Service) spectrum allocated by a Federal or commercial SAS (Spectrum Access System) to a managed content delivery network that includes one or more wireless access nodes (e.g., CBSDs and APs) in data communication with a controller. In one variant, the controller dynamically allocates (i) spectrum within the area or venue within CBRS bands, and (ii) MSO users or subscribers to CBRS bands or WLAN (e.g., public ISM) bands in to manage interference between the coexisting networks, and maximize user experience. In another variant, the controller cooperates with a provisioning server to implement a client device application program or app on MSO user or subscriber client devices which enables inter-RAT access.

Adjusting backhaul and fronthaul communication links of wireless mesh networks are described. A wireless mesh network has a topology including fronthaul communication links and backhaul communication links. In one aspect, characteristics of network data packets transmitted within a wireless mesh network can be identified. Based on those characteristics, the topology of the wireless mesh network can change.

In one embodiment, the present disclosure provides a self-optimizing network (SON) coordination module that includes a conflict detection module configured to receive operational information from at least one capacity and coverage optimization (CCO) module and at least one of an energy savings management (ESM) and/or a cell outage compensation (COC) module, wherein the at least one CCO module and the at least one of the ESM module and/or the COC module are associated with at least one eNodeB (eNB) in communication with the conflict detection module. The conflict detection module is configured to determine a conflict between operational information of the CCO module and at least one of the ESM module and/or the COC module. The SON coordination module also includes a conflict resolution module configured to resolve a conflict between the operational information of the CCO module and at least one of the ESM module and/or the COC module based on, at least in part, one or more conflict resolution rules.

In modern networks, frequent handovers (e.g., ping-pong) from one AP device to another is a situation that can lead to increased latency, excessive resource utilization, poor quality of service, or radio link failure (RLF). Conventional networks employ mobility robustness optimization (MRO) procedures to balance tradeoffs between setting low thresholds before initiating a handover procedure, thereby increasing the likelihood of ping-pong issues, and setting those thresholds to higher values, thereby increasing the likelihood of RLF. Conventional MRO procedures are tailored to terrestrial-only networks and furthermore merely react to existing issues. Hybrid networks, having both terrestrial and aerial AP devices often witness ping-pong issues and may be implemented with urgency not conducive to using MRO procedures. An architecture is presented that can predict and mitigate ping-pong and other issues in connection with hybrid networks before those issues occur.

A method, an equipment and a system for handing over a cell in a communication system supporting carrier aggregation. The method includes, when a terminal in the communication system moves to the edge of the currently serving cell, the terminal selects one or more neighbor cells from one or more neighbor cells as measurement objects according to the carrier aggregation manner of the one or more neighbor cells, the terminal measures the capabilities of the measurement objects, and obtains one or more measurement results, and the terminal sends a source base station which currently serving the terminal one or more measurement results as capability measurement reports of the one or more neighbor cells. Also provided are an equipment for handing over a cell in a communication system supporting carrier aggregation, a terminal including the said equipment and a communication system including the said terminal.