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Resource allocation method and system for uplink demodulation reference signal

A demodulation reference signal and resource allocation technology, which is applied in the field of resource allocation of uplink demodulation reference signals, can solve the problems that UE cannot achieve orthogonality, scheduling constraints and insufficient DMRS multiplexing capacity, etc.

Inactive Publication Date: 2018-04-06
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 system for uplink demodulation reference signal
  • Resource allocation method and system for uplink demodulation reference signal
  • Resource allocation method and system for uplink demodulation reference signal

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 present invention discloses a resource configuration method and system for an uplink demodulation reference signal. A base station configures N resources or parameter sets for sending an uplink demodulation reference signal for a user terminal through high-level signaling, and through the downlink control information K bits indicate that one of the N resources or parameter sets is used for the user terminal to send an uplink demodulation reference signal; the user terminal uses the resource or parameter set indicated by the K bits to send an uplink demodulation reference signal , where N and K are both positive integers. This solution saves signaling overhead, dynamically configures DMRS resources or parameter sets of UEs between cells, makes DMRSs of UEs between different cells orthogonal, overcomes scheduling restrictions, and enhances the multiplexing capacity of DMRSs, avoiding the need for multiplexing between different cells in related technologies. The UEs cannot achieve orthogonality, there are scheduling restrictions and insufficient DMRS multiplexing capacity, thus improving the transmission performance of the system.

Description

technical field [0001] The present invention relates to the communication field, in particular, 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 Physical Random Access Channel (PRACH, Physical Random Access Channel), Physical Shared Channel (PUSCH, Physical uplinkshared channel), Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel) Channel). The uplink scheduling information (Uplink Scheduling Information) for the PUSCH is sent by the base station to a target user terminal (UE, UserEquipment) 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 cyclic shif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/12
CPCH04L5/0037H04L5/0048H04W72/20
Inventor 王瑜新戴博孙云锋
Owner ZTE CORP
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