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Multi-antenna transmission method of measurement reference signals, terminal and base station

A technology for measuring reference signals and transmission methods, which is applied in the field of communication and can solve problems such as the decline in the number of users

Active Publication Date: 2010-10-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] And because it is proposed in the requirements of LTE-A that the number of users that the LTE-A system can accommodate should not be less than that of the LTE system, this requirement conflicts with the fact that the number of users decreases when multiple antennas transmit SRS.

Method used

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  • Multi-antenna transmission method of measurement reference signals, terminal and base station
  • Multi-antenna transmission method of measurement reference signals, terminal and base station
  • Multi-antenna transmission method of measurement reference signals, terminal and base station

Examples

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Effect test

example 1

[0158] When a terminal configured with multiple antennas has only one antenna to send SRS at the same time, that is, when the terminal is in the single-antenna transmission mode,

[0159] When the antenna selection is disabled, the terminal sends SRS on a fixed antenna;

[0160] When antenna selection is enabled,

[0161] A) If the terminal can support up to 2 transmit antennas, use the following method to select the antenna and send the SRS:

[0162] When the frequency hopping of SRS in the frequency domain is not enabled, the antenna index a(n SRS ) is calculated as: a(n SRS ) = n SRS mod2;

[0163] When SRS frequency hopping in the frequency domain is enabled, the antenna index a(n SRS ) is calculated as:

[0164]

[0165] in no matter N b take what value, Both are 1, N bThe number of branches corresponding to the b layer when the SRS bandwidth tree structure is allocated, as shown in Table 1 to Table 4, n SRS is the sending counter of SRS, B SRS is the ...

example 2

[0169] When a terminal configured with multiple antennas has only one antenna to send SRS at the same time, that is, when the terminal is in single-antenna transmission mode:

[0170] When the antenna selection is disabled, the terminal sends SRS on a fixed antenna;

[0171] When antenna selection is enabled,

[0172] 1) If the terminal can support up to 4 transmitting antennas, the following methods are used for antenna selection and transmission:

[0173] When the frequency hopping of SRS in the frequency domain is not enabled, the antenna index a(n SRS ) is calculated as: a(n SRS ) = n SRS mod4;

[0174] When SRS frequency hopping in the frequency domain is enabled, the antenna index a(n SRS ) is calculated as:

[0175]

[0176]

[0177] in no matter N b take what value, Both are 1, N b The number of branches corresponding to the b layer when the SRS bandwidth tree structure is allocated, as shown in Table 1 to Table 4, n SRS is the sending counter of ...

example 3

[0180] Orthogonal resources are allocated to different antennas by code division multiplexing (CDM), time division multiplexing (TDM), or frequency division multiplexing (FDM), or any combination of the above, and each antenna transmits on the orthogonal resources Uplink SRS.

[0181] Further, the resource allocation mode is configured by the base station to the terminal through high-level signaling or downlink control signaling;

[0182] Further, before allocating orthogonal resources for different antennas, the base station (eNB) notifies the terminal equipment (UE) of resources for sending uplink SRS by each antenna through high-level signaling or downlink control signaling; or, the eNB transmits uplink SRS resources through high-level signaling or downlink control signaling Signaling notifies the UE of resources and resource allocation methods for some antennas to send uplink SRSs, and the UE determines resources for sending SRSs for each antenna according to the configure...

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Abstract

The invention provides a multi-antenna transmission method of measurement reference signals, which comprises the following steps: obtaining an antenna transmission mode of a terminal, and transmitting measurement reference signals (SRS) according to the antenna transmission mode. The invention also provides a terminal, which is used for obtaining the antenna transmission mode and transmitting the measurement reference signals (SRS) according to the antenna transmission mode.

Description

technical field [0001] The present invention relates to the communication field, and in particular to a multi-antenna transmission method of a measurement reference signal (Sounding Reference Signal, referred to as SRS), a terminal and a base station. Background technique [0002] The uplink physical channels of the Long Term Evolution (abbreviated as LTE) system include a physical random access channel (Physical Random Access Channel, abbreviated as PRACH), a physical uplink shared channel (Physical uplink shared channel, abbreviated as PUSCH), a physical uplink Control channel (Physical uplink control channel, PUCCH for short). Among them, PUSCH has two different cyclic prefix (Cyclic Prefix, CP for short) lengths, which are Normal Cyclic Prefix (Normal Cyclic Prefix, Normal CP for short) and Extended Cyclic Prefix (ExtendedCyclic Prefix, Extended CP for short). Each sending subframe (Subframe) of the PUSCH consists of two time slots (Slot). For different cyclic prefix l...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04W72/04
CPCH04W72/042H04W72/23
Inventor 王瑜新朱鹏郝鹏梁春丽喻斌
Owner ZTE CORP
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