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Method and equipment for avoiding interference to cellular communication in V2X communication

A cellular communication and interference-affected technology, applied in the field of avoiding interference to cellular communication, can solve problems such as interference, cellular downlink communication interference, affecting cellular communication user experience, etc., and achieve the effect of reducing complexity

Active Publication Date: 2018-02-23
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But this synchronization mechanism will bring a problem, such as figure 1 As shown, if the VUE is outside the coverage of the cellular network but close to the edge of the cellular network, if the cellular network and the VUE both work in the TDD frequency band at this time, the bypass signal sent by the VUE may affect the nearby cellular network receiving the downlink signal. UE causing interference
Since the type of service carried by the downlink communication of the cellular network may be related to security, and its service priority and importance may not be lower than that of the V2X communication service, the interference of the bypass communication on the downlink communication of the cellular network will not only affect the user experience of the cellular communication, may also affect public safety
Based on the above considerations, the interference of bypass communication to cellular downlink communication is a problem that must be solved, but there is currently no reliable solution to this problem

Method used

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  • Method and equipment for avoiding interference to cellular communication in V2X communication
  • Method and equipment for avoiding interference to cellular communication in V2X communication
  • Method and equipment for avoiding interference to cellular communication in V2X communication

Examples

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Effect test

Embodiment 1

[0049] In this embodiment, the VUE determines the TDD uplink and downlink configuration of the VCell. If the system frame determined by the VUE according to the GNSS timing is aligned with the start of the system frame of the VCell, the VUE only selects resources for sending the PSSCH and / or PSCCH on the bypass subframe corresponding to the uplink subframe of the VCell. The VUE determines the position of the bypass subframe according to the pre-configuration; or selects resources at the subframe position with the highest priority according to a certain priority order; or selects only the time-frequency resources outside the scheduling configuration. If the system frame determined by the VUE according to the GNSS timing is not aligned with the start of the system frame of the VCell, resources are selected in the subframe with the highest priority according to a certain priority order. The specific implementation steps are as follows:

[0050] Step 210: The VUE receives the PSB...

Embodiment 2

[0068] In this embodiment, the VUE determines the TDD uplink and downlink configuration of the VCell. If the VUE is outside the coverage of the VCell and is located at the edge of the VCell, the VUE adjusts the transmission power of the PSSCH and / or PSCCH to reduce the impact on the downlink reception of the VCell. The specific implementation steps are as follows:

[0069] Step 310: The VUE receives the PSBCH sent by the UE covered by the VCell to determine the TDD uplink and downlink configuration of the VCell and other information.

[0070] In this embodiment, the VUE may receive the PSBCH sent by the UE covered by the VCell to determine the TDD uplink and downlink configuration of the VCell. At this time, the operation of the VUE is the same as step 210 in the first embodiment. Or the VUE determines the TDD uplink and downlink configuration of the VCell according to the zone (Zone) corresponding to the current geographic location and the information stored in the database. ...

Embodiment 3

[0078] In this embodiment, the VUE determines the area corresponding to the geographical location, and then obtains the pre-configuration information of the area according to the pre-configuration, and determines whether the resource selection restriction is enabled in the area. If enabled, the PSSCH and / or PSCCH transmission resources are selected only or preferentially on subframes that meet specific conditions. The specific implementation steps are as follows:

[0079] Step 410: The VUE determines the area configuration information corresponding to the current location.

[0080] In this embodiment, the VUE determines the area corresponding to the current location according to the pre-configuration information and its own positioning module, and further determines the configuration information corresponding to the area according to the pre-configuration, and the configuration information should include one or more of the following item:

[0081] 1. Whether to enable resour...

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Abstract

The application provides a method for avoiding interference to the cellular communication. The method comprises the following steps: VUE determines TDD uplink / downlink configuration of a VCell according to PSBCH or the pre-configuration of the located region, and then avoids the selection of the resource which is overlapped with the VCell downlink sub-frame or the downlink OFDM symbol, for the PSSCH and / or PSCCH sending according to a corresponding resource selection limiting mechanism; or the VUE determines an open-loop power control parameter according to the pre-configuration or the pre-configuration corresponding to the region; and when the PSBCH or the fact that the VUE is located at the region near the VCell can be successfully detected, computing the sending power of the PSSCH and / or PSCCH by using the open-loop power control parameter, thereby reducing the influence on the downlink receiving in the VCell. Through the method provided by the application, the influence on the cellular communication by the V2X communication can be effectively reduced with a limited complexity.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular, the present application relates to a method and device for avoiding interference to cellular communication in a V2X communication system. Background technique [0002] At present, D2D (Device to Device) communication technology has been accepted by 3GPP standards due to its great potential value in the field of public safety and ordinary civilian communication, and some functions have been standardized in 3GPP Rel-12, including cell Mutual discovery of D2D terminals in coverage scenarios and broadcast between D2D terminals in scenarios of In Coverage (IC), Partial Coverage (PC) and Out of Coverage (OC) communication. [0003] According to the current 3GPP conclusions, for UEs participating in D2D mutual discovery, in order to achieve subframe-level synchronization between D2D terminals in different cells, UEs that send D2D discovery signals need to Send...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W52/24H04W72/08H04W72/54
CPCH04W28/08H04W52/244H04W72/541
Inventor 张世昌李迎阳王轶
Owner BEIJING SAMSUNG TELECOM R&D CENT
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