Communication method, user equipment, and network device
First Claim
Patent Images
1. A first user equipment, comprising:
- a receiver, configured to receive a discovery message sent by a second user equipment using a codeword resource, wherein the the codeword resource corresponds to a discovery area identifier of the second user equipment, and wherein the discovery area identifier is an identifier of an area in which the second user equipment is located, and the discovery area identifier has a length that is shorter than a length of a cell identifier of a cell in which the second user equipment is located;
a processor coupled to the receiver and configured to acquire the discovery area identifier of the second user equipment using the correspondence between the codeword resource and the discovery area identifier; and
a transmitter coupled to the processor and configured to send a communication request to a network device according to the discovery message, wherein the communication request is used to request to communicate with the second user equipment, and the communication request indicates the discovery area identifier of the second user equipment, wherein the network device sends a paging message to the second user equipment according to the communication request and the discovery area identifier of the second user equipment.
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Abstract
Embodiments relate to a communication method, user equipment, and a network device. A discovery message sent by second user equipment indicates cell information of the user equipment, so that first user equipment that receives the discovery message sends a communication request to a network device according to the discovery message. The communication request indicates the cell information of the second user equipment. The network device sends a paging message to the second user equipment according to a cell message of the second user equipment, which saves resources in a paging process of direct communication.
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Citations
16 Claims
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1. A first user equipment, comprising:
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a receiver, configured to receive a discovery message sent by a second user equipment using a codeword resource, wherein the the codeword resource corresponds to a discovery area identifier of the second user equipment, and wherein the discovery area identifier is an identifier of an area in which the second user equipment is located, and the discovery area identifier has a length that is shorter than a length of a cell identifier of a cell in which the second user equipment is located; a processor coupled to the receiver and configured to acquire the discovery area identifier of the second user equipment using the correspondence between the codeword resource and the discovery area identifier; and a transmitter coupled to the processor and configured to send a communication request to a network device according to the discovery message, wherein the communication request is used to request to communicate with the second user equipment, and the communication request indicates the discovery area identifier of the second user equipment, wherein the network device sends a paging message to the second user equipment according to the communication request and the discovery area identifier of the second user equipment. - View Dependent Claims (2, 3, 4, 5)
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6. A second user equipment, comprising:
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a processor, configured to; determine, according to a correspondence between a discovery area identifier of the second user equipment and a codeword resource, the codeword resource corresponding to the discovery area identifier of the second user equipment, wherein the discovery area identifier is an identifier of an area in which the second user equipment is located, and the discovery area identifier has a length that is shorter than a length of a cell identifier of a cell in which the second user equipment is located; and generate a discovery message; and a transmitter coupled to the processor and configured to send the discovery message using the codeword resource corresponding to the discovery area identifier of the second user equipment, the codeword resource indicating the discovery area identifier of the second user equipment, so that a first user equipment that receives the discovery message, determines the discovery area identifier of the second user equipment according to the correspondence, and sends a communication request to a network device according to the discovery message, wherein the communication request is used to request to communicate with the second user equipment, and the communication request indicates the discovery area identifier of the second user equipment, so that the network device sends a paging message to the second user equipment according to the communication request and the discovery area identifier of the second user equipment. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A second user equipment, comprising:
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a processor, configured to; determine, according to a correspondence between a discovery area identifier and a resource, the resource corresponding to the discovery area identifier of the second user equipment, wherein the resource is a time resource or a frequency resource, wherein the discovery area identifier is an identifier of an area in which the second user equipment is located, and the discovery area identifier has a length that is shorter than a length of a cell identifier of a cell in which the second user equipment is located; and generate a discovery message; and a transmitter, coupled to the processor and configured to send the discovery message using the resource corresponding to the discovery area identifier of the second user equipment, the resource indicating the discovery area identifier of the second user equipment, wherein a first user equipment that receives the discovery message sends a communication request to a network device according to the resource used for the sending of the discovery message, wherein the communication request is used to request to communicate with the second user equipment, and the communication request indicates the discovery area identifier of the second user equipment, so that the network device sends a paging message to the second user equipment according to the communication request and the discovery area identifier of the second user equipment. - View Dependent Claims (15, 16)
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Specification