Transmission resource requesting method and apparatus

A resource requesting apparatus, comprising:

• a processing module, configured to allocate resource configuration information for communication with first UE;
• a sending module, configured to send, to the first UE, the resource configuration information allocated by the processing module;
• and
• a receiving module, configured to receive a resource scheduling request SR that is sent by the first UE on a resource corresponding to the resource configuration information, wherein the SR carries a D2D transmission resource indication;
• wherein
• the processing module is configured to allocate a D2D transmission resource to the first UE according to the D2D transmission resource indication received by the receiving module, wherein the D2D transmission resource is used by the first UE to send data to second UE;
• and
• the sending module is configured to send, to the first UE, D2D transmission resource information allocated by the processing module.

A resource requesting apparatus, comprising:

• a processing module, configured to obtain a first data transmission resource and a second data transmission resource that are allocated by an evolved NodeB (eNodeB), wherein the first transmission resource is used for communication with another UE, and the second transmission resource is used for communication with the eNodeB;
• wherein
• the processing module is configured to determine to construct, when the first data transmission resource is capable of accommodating all device-to-device (D2D) data, a Media Access Control protocol data unit (MAC PDU) that does not comprise a D2D buffer status report (BSR);
• and
• a sending module, configured to send, on the second data transmission resource obtained by the processing module, the MAC PDU constructed by the processing module.

A resource requesting method, comprising:

• receiving, by first user equipment UE, resource configuration information for communication between the first UE and an evolved NodeB (eNodeB);
• determining, by the first UE, data needing to be sent to second UE;
• determining, by the first UE, a D2D transmission resource indication needing to be sent;
• sending, by the first UE on a resource corresponding to the resource configuration information to the eNodeB, a resource scheduling request (SR) carrying the D2D transmission resource indication, wherein the D2D transmission resource indication is used to request the eNodeB to allocate a D2D transmission resource to the first UE;
• receiving, by the first UE, D2D transmission resource information used for sending the data to the second UE, wherein the D2D transmission resource information is allocated by the eNodeB according to the D2D transmission resource indication;
• and
• sending, by the first UE, the data to the second UE on the D2D transmission resource.