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D2D communication resource reselecting method, apparatus and terminal

A communication resource and terminal technology, applied in wireless communication, electrical components, etc., can solve problems such as inability to receive information and inability to perform receiving operations, and achieve the effects of reducing communication delay, avoiding conflicts, and improving efficiency

Active Publication Date: 2017-05-31
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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Problems solved by technology

[0004] However, when the user equipment V-UE1 travels to a location close to the user equipment V-UE2, the user equipment V-UE1 and the user equipment V-UE2 may have V2V communication requirements
However, due to the half-duplex communication mode between the user equipment V-UE1 and the user equipment V-UE2, the user equipment V-UE1 and the user equipment V-UE2 cannot perform receiving operations in the time domain when sending control information or data; The static scheduling mode causes the user equipment V-UE1 and the user equipment V-UE2 to continue to be unable to receive each other's information within a certain period of time

Method used

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  • D2D communication resource reselecting method, apparatus and terminal
  • D2D communication resource reselecting method, apparatus and terminal
  • D2D communication resource reselecting method, apparatus and terminal

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Embodiment Construction

[0040] As described in the background art, when the user equipment V-UE1 travels to a location close to the user equipment V-UE2, the user equipment V-UE1 and the user equipment V-UE2 may have a V2V communication demand. However, due to the half-duplex communication mode of the user equipment V-UE1 and the user equipment V-UE2, the user equipment V-UE1 and the user equipment V-UE2 cannot receive the control information or data in the time domain. The static scheduling method causes the user equipment V-UE1 and the user equipment V-UE2 to continue to be unable to receive each other's information for a certain period of time.

[0041] The embodiment of the present invention proposes a D2D communication resource reselection method for D2D communication in an autonomous resource selection mode. Receive Sidelink Control Indication (SCI) via idle time-frequency resources, so that terminals that have D2D communication requirements and have selected the same subframe and different freque...

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Abstract

The invention provides a D2D communication resource reselecting method, an apparatus and a terminal wherein the D2D communication resource reselecting method comprises: receiving the side direction control and indication information from the idle time-frequency resource; according to the side direction control and indication information, determining that time-domain resource conflict exists between the current terminal and the opposite side terminal and reselecting the transmission resource wherein the opposite side terminal communicates with the current terminal through the use of D2D. The technical schemes of the invention can increase the efficiency of D2D communications.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, and in particular to a method, device and terminal for reselecting D2D communication resources. Background technique [0002] In the Long Term Evolution (LTE) system, communication between User Equipment (UE) supports inter-device communication (Device-to-Device, D2D). In order to improve resource utilization efficiency, the resource multiplexing of multiple users in D2D communication mainly adopts Frequency Division Multiple Access (FDMA) technology. Vehicle to Vehicle (V2V) is a typical application scenario of D2D. Compared with D2D communication, which is mainly used for public safety services, V2V communication has lower latency, higher reliability requirements, and higher support. User density. D2D communication can support working in two scenarios: In-Coverage and Out-of-Coverage scenarios. In a scenario without cell coverage, the base station cannot be used for resour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/10H04W72/12
CPCH04W24/10H04W72/535
Inventor 李维成
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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