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Method, equipment and system for distributing feedback channel with single district transmission mode

A feedback channel and transmission mode technology, applied in the field of feedback channel allocation in single-cell transmission mode, can solve the problems of increasing feedback gain, occupying large network resources, and wasting UE power, so as to save feedback power, improve utilization rate, and reduce connection number effect

Active Publication Date: 2009-05-27
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

Compared with the multi-cell transmission mode, the single-cell transmission mode loses the cell combination gain, but increases the feedback gain
[0006] In the existing single-cell transmission mode, for ENB, when a UE in the cell applies for access to the service, the ENB must allocate a feedback channel for each UE that applies; and when the UE withdraws from the service, the ENB must immediately release them In this way, when the number of UEs is large, ENB allocates a feedback channel for each UE that applies for it, which needs to occupy a large amount of network resources, and frequently allocates feedback channels and releases connections, which affects the work efficiency of ENB
[0007] Related to the above problems, on the other hand, for the UE, as long as the UE starts to access the service, it needs to continuously feed back the receiving quality to the ENB, so that the ENB can adjust the transmit power according to the UE with the worst feedback quality, resulting in the UE power waste of

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  • Method, equipment and system for distributing feedback channel with single district transmission mode
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  • Method, equipment and system for distributing feedback channel with single district transmission mode

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, detailed descriptions are given below.

[0045]In the technical solution disclosed in the embodiment of the present invention, in the single-cell transmission mode, fewer feedback channels are used to bring greater feedback gain, and the ENB adjusts the current transmission power, and selects N UEs applying for feedback (N is a preset value) For UEs with poor reception quality, let them continue to feed back, and for other UEs that occupy feedback connections but have better reception quality, release their connections; UEs only have their block error rate (BLER, Block Error Ratio) greater than the set BLER threshold Only apply for a feedback connection when the value is set, otherwise continue to receive services in the idle state and do not participate in feedback.

[0046] In order to achieve the above object, an embodiment of the present invention pr...

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Abstract

The invention discloses a method for allocating feedback channel under single cell transmission mode comprising: allocating feedback channel for user equipment applied for feedback, establishing feedback connection; inquiring allocated feedback channel number; if the inquired feedback channel number is bigger than set numerical value N, keeping feedback connection of N user terminal with maximal block error rate, releasing other feedback connection of other user equipment. The invention also discloses user equipment and evolved network node equipment. The invention can reduce network resource occupied by feedback of user equipment, promote utilization rate of wireless resource, save feedback power of user equipment and reduce interference for peripheral user equipment.

Description

technical field [0001] The invention relates to multimedia broadcast and multicast technology, in particular to a method, device and system for allocating feedback channels in a single-cell transmission mode. Background technique [0002] Multicast / Broadcast Multicast Service (MBMS, Multicast / Broadcast Multimedia Scheme) refers to a point-to-multipoint service in which a data source sends data to multiple users. It can realize the integration of mobile core network resources and access network resources, especially air interface resources. Effective sharing of network resources. The MBMS defined by the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) can not only realize plain text low-rate message multicast and broadcast, but also realize high-rate multimedia service multicast and broadcast, conforming to the future Trends in mobile data development. According to the distribution of users receiving services, MBMS adopts two transmission modes:...

Claims

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Application Information

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IPC IPC(8): H04W28/04H04W52/20H04W76/06
CPCY02B60/50
Inventor 张冬梅胡军伏玉笋
Owner HUAWEI TECH CO LTD
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