Method and apparatus for selecting relay in device-to-device communication
AssigneeHuawei Technologies Co., Ltd.
InventorsKai Xu, Chao Li
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Abstract
The present invention discloses a method and an apparatus for selecting a relay in D2D communication. The method includes: determining, by a relay selection device, link quality of a first link of each candidate relay UE in a candidate relay UE list, where the candidate relay UE list includes at least one candidate relay UE, and the first link of each candidate relay UE is a radio link between each candidate relay UE and a base station; and determining target relay UE from the candidate relay UE list according to the link quality of the first link of each candidate relay UE in the candidate relay UE list, where the target relay UE is used for relaying data transmitted between first UE and the base station.
Claims16
A method for selecting a relay to communicate with a network, the method comprising:
- receiving, by a first user equipment (UE), information sent by a second UE, wherein the information indicates that the second UE is capable of serving as a UE to network relay UE;
- and
- determining, by the first UE, that the second UE is one of multiple candidate relay UEs according to the information sent by the second UE;
- wherein the second UE is capable of serving as the UE to network relay UE when a link quality of a radio link between the second UE and a base station is higher than a first quality threshold;
- wherein the first quality threshold is configured by the base station, or the first quality threshold is indicated by the first UE by using indication information;
- and
- wherein the information sent by the second UE is sent by the second UE to the first UE based on the link quality of the radio link between the base station and the second UE being higher than the first quality threshold.
A first user equipment (UE), comprising:
- a processor;
- and
- a memory storing instructions that when executed by the processor configure the first UE to perform steps comprising:
- receiving information sent by a second UE, wherein the information indicates that the second UE is capable of serving as a UE to network relay UE;
- and
- determining that the second UE is one of multiple candidate relay UEs according to the information sent by the second UE;
- wherein the second UE is capable of serving as the UE to network relay UE when a link quality of a radio link between the second UE and a base station is higher than a first quality threshold;
- wherein the first quality threshold is configured by the base station, or the first quality threshold is indicated by the first UE by using indication information;
- and
- wherein the information sent by the second UE is sent by the second UE to the first UE based on the link quality of the radio link between the base station and the second UE being higher than the first quality threshold.
Dependencies are inferred from the claim text.