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Transmission method for uplink control signaling, base station and user equipment

A technology for user equipment and control signaling, applied in wireless communication, electrical components, etc., can solve the problems of failing to meet the feedback requirements of LTE-Advanced and rough granularity of resource division

Inactive Publication Date: 2011-04-20
夏普高科技研发(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Nokia once proposed to use the CDM method to sub-channelize the feedback resource (R1-063380, "Multiplexing of L1 / L2 control signaling when UE has no data to transmit", Nokia, 3GPP RAN1 #47, November 6-10, 2006) , however, the resource division granularity of this solution is still relatively rough, which cannot meet the feedback requirements of LTE-Advanced uplink control signaling

Method used

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  • Transmission method for uplink control signaling, base station and user equipment
  • Transmission method for uplink control signaling, base station and user equipment
  • Transmission method for uplink control signaling, base station and user equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Embodiment 1: OVSF code time-frequency two-dimensional code division multiplexing

[0047] If the uplink control channel resource occupied by the user equipment occupies the entire resource block of the uplink control channel, the uplink control channel does not need to be multiplexed among different user equipments, but only allocated to the user equipment for use, the base station The feedback resources are notified to the user equipment through dynamic designation or high-level signaling notification, where the sequence in the feedback resource is the OVSF code with SF of 1; if the user equipment only needs to occupy part of the uplink control channel resources, the base station will select Appropriate number of user equipments multiplex the same uplink control channel, and different users adopt the same or different sequences according to the demand of control signaling feedback amount, here is the same or different SF OVSF codes, and the base station dynamically s...

Embodiment 2

[0055] Embodiment 2: Joint OVSF code time-frequency two-dimensional code division multiplexing and time division multiplexing

[0056] Figure 5The second scheme of the uplink control channel sub-channelization method is given: joint OVSF code time-frequency two-dimensional code division multiplexing and time division multiplexing. Different from the first embodiment, the sub-channel division method in the second embodiment is performed in the manner of joint time division and time-frequency two-dimensional code division. Firstly, the physical resource of the uplink control channel is preferably divided into several resource sub-blocks of 4 SC-FDMA symbols, and then the control signaling of different user equipments in each resource sub-block is performed in accordance with the method in Embodiment 1. OVSF Code time-frequency two-dimensional code division multiplexing, and the physical resource mapping method after the signaling symbol is spread is the same as that in the f...

Embodiment 3

[0062] Embodiment 3: Joint OVSF code block spreading code division multiplexing and time division multiplexing

[0063] Image 6 The third scheme of the uplink control channel sub-channelization method is given: joint OVSF code block spreading code division multiplexing and time division multiplexing. Different from Embodiment 2, OVSF code time-frequency two-dimensional spread spectrum is no longer performed in each resource sub-block, but time-one-dimensional block spread spectrum is performed between SC-FDMA symbols in the resource sub-block, preferably The spread spectrum code is the OVSF code, and the supported SFs are 1, 2, and 4.

[0064] Image 6 In one resource sub-block of the uplink control channel physical resources, the SC-FDMA symbols composed of the control signaling symbols of user equipment 1 are mapped to two SC-FDMA symbols after being spread by the OVSF code block with SF of 2, The rest of the control signaling symbols are similarly spread and mapped to...

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Abstract

The invention provides a transmission method for uplink control signaling and a base station and user equipment which are used for realizing the same. In the invention, an uplink control channel is divided by at least one of code division multiplexing, time division multiplexing and frequency division multiplexing into one or more of sub-channels for supporting different feedback quantities of uplink control signaling, so that a plurality of sets of user equipment with the same or different uplink control signaling feedback needs can be multiplexed to a time-frequency resource corresponding to the same uplink control channel flexibly. The base station indicates the user equipment dynamically by downlink control channels or semi-statically by high-level signaling to adopt feedback resources of different uplink control channels. When the method, the base station and the user equipment are used, the using efficiency of the uplink control channels can be improved to save loads of the uplink control channels, and the technology of carrier aggregation, collaborative multipoint sending / receiving and multi-antenna enhancement can be supported effectively.

Description

technical field [0001] The present invention relates to the transfer of control signaling in a wireless communication system, in particular to a transmission method for uplink control signaling in LTE-Advanced and 4G systems, and a base station and user equipment for implementing the above transmission method. Background technique [0002] In order to meet the requirements of ITU's IMT-Advanced system, 3GPP's LTE-Advanced system introduces various advanced technologies such as carrier aggregation (Carrier Aggregation), coordinated multi-point transmission / reception (Coordinated Multi-Point Transmission / Reception) and multi-antenna enhancement. . The adoption of these technologies makes the demand for uplink control signaling capacity of the LTE-Advanced system much larger than that of the LTE system; and between user equipment using different transmission technologies, the demand for uplink control signaling capacity will also vary greatly . Taking carrier aggregation tech...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W88/08
Inventor 杨曾张应余刘仁茂黄磊丁铭梁永明
Owner 夏普高科技研发(上海)有限公司
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