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Antenna Dependent Uplink Feedback Method

An antenna and information feedback technology, applied in diversity/multi-antenna systems, radio transmission systems, space transmit diversity, etc., can solve problems such as the shortage of SRS resources, achieve good flexibility, save uplink feedback overhead, increase the number of transmissions and/or or the effect of resource usage

Active Publication Date: 2016-03-23
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Listening Reference Signal (SRS) plays a more important role, which may lead to a potential shortage of SRS resources;

Method used

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  • Antenna Dependent Uplink Feedback Method
  • Antenna Dependent Uplink Feedback Method

Examples

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Embodiment Construction

[0039] Hereinafter, the present invention will be described based on the accompanying drawings. In the following description, some specific embodiments are only for the purpose of description, which should not be construed as any limitation on the present invention, but are only examples. Conventional structures or constructions will be omitted when it may cause to obscure the understanding of the present invention.

[0040] figure 1 is a sequence diagram showing the antenna-related uplink feedback method according to the present invention.

[0041] In step 200, the base station (eNB) may notify the user equipment (UE) which antenna or antennas to perform antenna-related uplink feedback in an implicit or explicit manner.

[0042] (1) implicitly specified

[0043] (a) Alternate designation, which may also be referred to as polling designation, that is, uplink feedback is performed for each antenna / group of antennas in turn. Alternate designation can be sequential or non-seq...

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PUM

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Abstract

An antenna related uplink feedback method is disclosed by the invention. The method includes: a base station informs a user equipment to perform appointed type uplink information feedback of appointed antennas; the user equipment feeds back the appointed type uplink information of the appointed antennas to the base station. According to the invention, by scheduling, the base station can reduce the transmitting times and / or occupied resources of the antenna feedback information which carries less information, and increase the transmitting times and / or occupied resources of the antenna feedback information which carries more information, so the uplink feedback overhead has been effectively saved, and the loss of capability is insured in acceptable range. Otherwise, considering the compatibility with 3GPP LTE Release 8 system, the present invention can effectively resolve the problem of the lack of the uplink feedback resources in 3GPP LTE Release 8 system. The resources include interception reference symbol (SRS), physical uplink control channel (PUCCH) and so on.

Description

technical field [0001] The present invention relates to the field of mobile communication, and more specifically, to an antenna-related uplink feedback method. Background technique [0002] Compared with 3GPP (Third Generation Partnership Project) LTE (Long Term Evolution) Release 8, 3GPP LTE Release 10 puts forward some new requirements for UE uplink feedback: [0003] A UE with a higher rank is usually equipped with more receiving antennas and fewer transmitting antennas; [0004] The Listening Reference Signal (SRS) plays a more important role, which may lead to a potential shortage of SRS resources; [0005] · Optimized for Multi-User Multiple-Input Multiple-Output (MU-MIMO), for example, using various parameters such as channel information. [0006] According to the above evolution characteristics, the following three factors will become the main reasons for applying the antenna-related uplink feedback scheme: [0007] Asymmetry of UE capabilities - a UE is usually i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04
CPCH04B7/0658H04B7/0619
Inventor 张晓博尤明礼
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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