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Resource allocation method and resource allocation system for uplink demodulation reference signals (DMRSs)

A technology for demodulation reference signal and resource allocation, which is applied in the field of resource allocation of uplink demodulation reference signal, and can solve the problems of UE being unable to achieve orthogonality, scheduling limitation of DMRS multiplexing capacity, etc.

Inactive Publication Date: 2012-04-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The present invention provides a resource configuration method and system for an uplink demodulation reference signal, which solves the problems in the prior art that UEs between different cells cannot achieve orthogonality, there are scheduling restrictions, and DMRS multiplexing capacity is insufficient

Method used

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  • Resource allocation method and resource allocation system for uplink demodulation reference signals (DMRSs)
  • Resource allocation method and resource allocation system for uplink demodulation reference signals (DMRSs)
  • Resource allocation method and resource allocation system for uplink demodulation reference signals (DMRSs)

Examples

Experimental program
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Embodiment 1

[0059] The base station configures N resources or parameter sets for sending uplink DMRS for the user terminal through high-layer signaling.

[0060] The N resources or parameter sets used to send uplink DMRS include one or more of the following information: user-specific parameters used to determine the uplink DMRS sequence group number u, used to determine the uplink DMRS sequence shift pattern f ss The user-specific parameters of , the cyclic shift information configured by high-level signaling, and the cell-specific parameter Δ used to determine the DMRS sequence shift pattern of PUSCH ss , user-specific parameters for determining the DMRS sequence shift pattern of PUCCH, group frequency hopping enable indication, sequence frequency hopping enable indication, sequence group frequency hopping not enable indication, DMRS orthogonal mask (OCC) enable It can indicate, the number of DMRS spatial multiplexing layers, and the sequence group number of the uplink demodulation refe...

Embodiment 2

[0069] The base station configures N resources or parameter sets for sending uplink DMRS for the user terminal through high-layer signaling.

[0070] The N resources or parameter sets used to send uplink DMRS include one or more of the following information: user-specific parameters used to determine the uplink DMRS sequence group number u, used to determine the uplink DMRS sequence shift pattern f ss The user-specific parameters of , the cyclic shift information configured by high-level signaling, and the cell-specific parameter Δ used to determine the DMRS sequence shift pattern of PUSCH ss , user-specific parameters for determining the DMRS sequence shift pattern of PUCCH, group frequency hopping enable indication, sequence frequency hopping enable indication, sequence group frequency hopping not enable indication, DMRS orthogonal mask (OCC) enable It can indicate, the number of DMRS spatial multiplexing layers, and the sequence group number of the uplink demodulation refe...

Embodiment 3

[0079] This embodiment provides a DMRS configuration method, which includes that the base station can configure different uplink DMRS sequence group numbers for users with the same cell ID (such as CoMP scenario 4), so as to achieve the purpose of increasing the uplink DMRS multiplexing capacity.

[0080] by Figure 7 Take CoMP scenario 3 or Comp scenario 4 shown in as an example. If the cell IDs of the macro base station and the low-power node below the macro base station are the same, it is CoMP scenario 4. If the cell IDs are different, it is CoMP scenario 3. Taking CoMP scenario 4 as an example, according to the configuration method of the 3GPP Rel-10 protocol in the related art, the uplink DMRS sequence group numbers of users under the same macro base station are the same, and all belong to the uplink DMRS sequence group numbers of users under the low-power node They are all the same, but the number of users in CoMP scenario 4 is generally relatively large, which is prone...

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Abstract

The invention discloses a resource allocation method and a resource allocation system for uplink demodulation reference signals (DMRSs). The method comprises the following steps: a base station allocates N resources or N parameter sets which are used for sending the uplink DMRSs for a user terminal through high-level signaling, and indicates that one of the N resources or one of the N parameter sets is used for the user terminal to send the uplink DMRSs through K bits in downlink control information; and the user terminal sends the uplink DMRSs by using a source or a parameter set indicated by the K bits, wherein both N and K are positive integers. The scheme saves the consumption of singling and dynamically allocates the resources or the parameter sets for the DMRSs for UE (User Equipment) among cells, so that the orthogonality of the DMRSs of the UE among different cells can be realized, the scheduling restrictions are overcome, the multiplexing capacity of the DMRSs is strengthened, and the problems in related technologies that the orthogonality of the DMRSs of the UE among the different cells cannot be realized, the scheduling restrictions exist, the multiplexing capacity of the DMRSs is insufficient are solved, thereby improving the transmission performance of a system.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a resource allocation method and system for an uplink demodulation reference signal (Demodulation Reference Signal, DMRS for short). Background technique [0002] The uplink physical channels of the long-term evolution system (LTE, Long Term Evolution) include a physical random access channel (PRACH, Physical Random Access Channel), a physical shared channel (PUSCH, Physical uplink shared channel), a physical uplink control channel (PUCCH, Physical Uplink Control Channel). The uplink scheduling information (Uplink Scheduling Information) for the PUSCH is sent by the base station to a target user terminal (UE, User Equipment) through a physical downlink control channel (Physical Downlink Control Channel, PDCCH for short). The uplink scheduling information includes: resource allocation related to the physical uplink shared channel, modulation and coding scheme, DMRS ...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/1278H04L5/0048H04W72/04H04L5/0037H04W72/20
Inventor 王瑜新戴博孙云锋
Owner ZTE CORP
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