Method and device for transmitting resource request

Abstract

The invention discloses a resource request method and device. The method includes: a first user equipment (UE) receives resource configuration information for communication between the first UE and an evolved base station (eNode), the first UE determines data that needs to be sent to the second UE, and the first UE Determine the device-to-device (D2D) transmission resource indication that needs to be sent, the first UE sends a resource scheduling request (SR) carrying the D2D transmission resource indication to the eNode on the resource corresponding to the resource configuration information, and the The D2D transmission resource indication is used to request the eNode to allocate D2D transmission resources for the first UE, the first UE receives information about the D2D transmission resources used to send data to the second UE, and the information about the D2D transmission resources Allocated by the eNode according to the D2D transmission resource indication, the first UE sends data to the second UE on the D2D transmission resource, thereby saving transmission resource overhead between the eNode and the UE, and avoiding The problem that the first UE requests the eNode for too long transmission resources reduces the scheduling delay.

Description

technical field [0001] Embodiments of the present invention relate to a communication system, in particular to a method and device for transmitting a resource request. Background technique [0002] In the Long Term Evolution (LTE) system, the evolved base station (Evolved NodeB, eNodeB) is responsible for scheduling the downlink data and uplink data of the user equipment (User Equipment, UE) and transmitting them on the air interface, while the uplink data of the UE , since the UE first generates uplink data, the eNodeB needs to obtain the UE's uplink data information (such as the size of the data volume), in order to allocate appropriate transmission resources for the UE to send the uplink data, so as to perform timely and accurate scheduling. [0003] Specifically, such as figure 1 As shown, the UE1 requests the transmission resource flow of uplink data as follows: [0004] 101. When UE1 generates uplink data that needs to be sent to UE2, and UE1 does not have transmissi...

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Problems solved by technology

[0009] Due to the frequent communication between UE1 and UE2, if the figure 1 In the scheduling method shown, frequent communication between UE1 and eNodeB will cause excessive transmission resource overhead between eNodeB and UE, and it takes 17.5ms for UE1 to request uplink data transmission resources from eNodeB, and the transmission delay is too long, which cannot satisfy UE1 and UE2. Low latency requirements for communication (10ms)

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