Method and device for notifying and receiving downlink demodulation reference signal initialization configuration parameters

A technology for demodulating reference signals and configuring parameters, which is applied in the field of communication and can solve the problems of poor CoMP technology, dynamic handover, limiting cell splitting gain, etc.

Inactive Publication Date: 2013-09-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0040] In addition, in the Scenario4 scenario, different nodes under the same cell have the same ID, and UEs under these nodes can only select two scrambling code identifiers, which will limit the cell splitting gain in the Scenario4 scenario
[0041] Aiming at the inability to dynamically switch from the new version initialization method to the old version initialization method in rel

Method used

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  • Method and device for notifying and receiving downlink demodulation reference signal initialization configuration parameters
  • Method and device for notifying and receiving downlink demodulation reference signal initialization configuration parameters
  • Method and device for notifying and receiving downlink demodulation reference signal initialization configuration parameters

Examples

Experimental program
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Embodiment 1

[0127] The base station configures multiple IDs for the terminal through user-specific high-layer signaling, where the IDs are used to generate a downlink demodulation reference signal sequence, and then the base station judges whether there are more than two IDs that are the same among the multiple IDs, according to The judgment result determines the scrambling code identification n SCID value. For the above process, this embodiment takes the two IDs configured by the base station for the terminal as an example for illustration.

[0128] Assuming that UE1 is a user (terminal) of an R11 system, the base station configures two IDs for UE1 (assumed to be X0 and X1 respectively). If the two configured IDs are the same, the scrambling used by the base station when generating the DMRS sequence Code ID n SCID The value of can be the n of the DCI Format in the DL_Grant configured by the base station in the related art SCID Take the same value. If the two configured IDs are not th...

Embodiment 2

[0131] The base station configures multiple IDs for the terminal through user-specific high-layer signaling, where the IDs are used to generate a downlink demodulation reference signal sequence, and then the base station judges whether there are more than two IDs that are the same among the multiple IDs, according to The judgment result determines the scrambling code identification n SCID value. For the above process, this embodiment takes the base station configuring three IDs for the terminal as an example for illustration.

[0132] The base station configures three IDs for the terminal. If the configured two IDs are the same, the scrambling code used by the base station when generating the DMRS sequence is n SCID The value of can be the n of the DCI Format in the DL_Grant configured by the base station in the related art SCID Take the same value. If the two configured IDs are not the same, when the base station generates the DMRS sequence, the scrambling code used to ide...

Embodiment 3

[0135] After UE1 receives the multiple IDs configured by the base station through user-specific high-layer signaling, UE1 judges whether there are more than two of the IDs that are the same among the multiple IDs, and determines the scrambling code n according to the judgment result SCID value. For the above process, this embodiment takes the base station configuring four IDs for the terminal as an example for illustration.

[0136] The base station configures four IDs for the terminal. If the configured two IDs are the same, the scrambling code used by the base station when generating the DMRS sequence is n SCID The value of can be the n of the DCI Format in the DL_Grant configured by the base station in the related art SCID Take the same value. If the two configured IDs are not the same, when the base station generates the DMRS sequence, the scrambling code used to identify n SCID The value is set to 0.

[0137] After UE1 receives the multiple IDs configured by the base ...

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Abstract

The invention discloses a method and device for notifying and receiving downlink demodulation reference signal initialization configuration parameters. The notifying method is applied to a base station. The downlink demodulation reference signal initialization configuration parameters comprise identifications (IDs) and/or scramble identifications. The notifying method comprises two steps, wherein the first step is that the base station configures N IDs for a terminal according to a high-level signaling exclusive to a user; the second step is that the base station judges whether more than two of the N IDs are identical, and decides to determine the initialization value of a downlink DMRS sequence in one of the following modes according to the judging result; the scramble identification nSCID and the ID used for determining the initialization value of the downlink DMRS sequence are sent to the terminal. By means of the method and device for notifying and receiving the downlink demodulation reference signal initialization configuration parameters, the switchover between dynamic orthogonality and interference randomization of the interference of one UE to other UE can be realized, and therefore the effects of offsetting the interference of users, improving the accuracy of data acceptance and enabling cells to split and gain under the Scenario 4 are achieved.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a downlink demodulation reference signal initialization configuration parameter notification and receiving method and device. Background technique [0002] After the Long Term Evolution (LTE for short) system has gone through several versions of R8 / 9 / 10, it is preparing to study R11 technology one after another. At present, some R8 products are gradually commercialized, and R9 and R10 are subject to further product planning. [0003] After going through the stages of R8 and R9, R10 added many new features on the basis of the first two, for example, Demodulation Reference Signal (DMRS for short), Channel State Information Reference Signal (Channel State Information Reference Signal, referred to as CSI-RS) and other pilot features, as well as antenna support and other transmission and feedback features, etc., especially the inter-cell interference cancellation enhancement (eh...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08H04W8/26H04W72/08
CPCH04B7/06
Inventor 郭森宝孙云锋王赵张峻峰
Owner ZTE CORP
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