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Signaling resource allocation method for uplink reference signal

A technology of signaling resource and allocation method, applied in the field of wireless communication, to achieve the effect of improving system performance, maintaining efficiency and ensuring flexibility

Active Publication Date: 2010-09-15
SHANGHAI RES CENT FOR WIRELESS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution needs to save the four patterns of Rank=1, 2, 3, and 4 in the terminal and the base station respectively, and whether the pattern of the Rank=4 scene can be given needs further study

Method used

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  • Signaling resource allocation method for uplink reference signal
  • Signaling resource allocation method for uplink reference signal
  • Signaling resource allocation method for uplink reference signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The signaling resource allocation method of the uplink reference signal proposed by the present invention provides an implicit signaling allocation method for the introduction of OCC (orthogonal mask) in the reference signal sequence of the LTE-A system in the uplink scenario.

[0039] The present invention uses explicit 3-bit signaling to indicate OCC+CS, wherein 1 bit is used to indicate OCC, and the other 2 bits are used to indicate CS. A total of 8 OCC+CS versions of different OCCs or different CSs can be indicated. The base station only specifies a certain OCC+CS index number of the first layer for the terminal through explicit 3-bit information, and the base station uses its own attributes (R8 / 9 / 10 users) and rank information in accordance with the predefined jump rules in OCC+CS Jump on the pattern to obtain the OCC+CS index numbers of other layers, and the base station can also learn the OCC+CS index numbers used by the terminal through the same method.

[0040]...

Embodiment 2

[0066] Option One:

[0067] 1. The case of SU-MIMO for LTE-A users.

[0068] The base station assigns the I-th index number to the SU-MIMO user through 3-bit information, and the base station and the terminal jump according to the predefined function, so that the OCC+CS separation distance of each layer is optimal, in the case of Rank=4 and 3 get as Figure 6 The OCC+CS assignment results shown.

[0069] 2. The situation of X4 users per user on two layers.

[0070] see Figure 7 , when there are X4 users per user on two layers, the terminal assigns the I, III, V, and VII index numbers to users 1, 2, 3, and 4 respectively, and the other layer index numbers of users are obtained by jumping.

[0071] 3. X1 users per user on the fourth floor, X1 users per user on the two floors, and X1 users per user on the first floor.

[0072] see Figure 8 , the base station allocates the II index number to the user whose rank is 4, assigns the VI index number to the user whose rank is ...

Embodiment 3

[0082] This embodiment discloses a signaling resource allocation method for an uplink reference signal. When the rank of a user for single-user transmission is Rank=1 or 2, or when the rank of a user for bandwidth allocation such as multi-user transmission is Rank=1 or 2, the signaling only uses Cyclic shift CS, do not use orthogonal mask OCC; when multi-user transmission is not equal bandwidth allocation, or multi-user transmission is equal bandwidth allocation user's rank Rank=3 or 4, or single-user transmission user's rank Rank=3 or 4 When , the signaling uses a cyclic shift CS and an orthogonal mask OCC. The signaling indication uses 3-bit information, wherein 1 bit is used to indicate OCC, and 2 bits are used to indicate CS.

[0083]The base station explicitly assigns an index number to the terminal, and the terminal uses explicit signaling to obtain the OCC and CS index numbers, and jumps to obtain the OCC and CS index numbers of the remaining layers according to the pre...

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PUM

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Abstract

The invention discloses a signaling resource allocation method for an uplink reference signal, which comprises the following steps that: when a single user transmits a user rank (Rank is equal to 1 or 2), or a plurality of users transmit the user rank (Rank is equal to 1 or 2) with uniform bandwidth allocation, signaling only uses a cyclic shift CS, but not an orthogonal mask code OCC; and when the plurality of users transmit the user rank (Rank is equal to 1 or 2) with nonunifrom bandwidth allocation or transmit the user rank (Rank is equal to 3 or 4) with uniform bandwidth allocation, or the single user transmits the user rank (Rank is equal to 3 or 4), the signaling uses the cyclic shift CS and the orthogonal mask code OCC. The signaling resource allocation method for the uplink reference signal provides an implicit signaling distribution way aiming at introducing the OCC into an LTE-A system reference signal sequence in an uplink situation. By using the technical scheme of the invention, on the premise of ensuring that extra signaling bits are not added, the signaling resource of the uplink reference signal of the user is allocated fully and flexibly, and the system performance is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a signaling resource allocation method, in particular to a signaling resource allocation method of an uplink reference signal. Background technique [0002] At present, the standardization work on IMT Advanced is highly concerned at home and abroad. Uplink enhancement technology has become the focus of LTE Advanced research. In LTE uplink multi-user multi-antenna (MU-MIMO), the DM RS (demodulation reference signal) of different antennas uses different cyclic shifts (CS, cycle shift) of Zadoff-Chu sequences. ) is used as an orthogonal code to perform inter-layer or inter-user reference signal multiplexing. 3GPP LTE Advanced system's "downlink target peak rate is 1Gbps, uplink target peak rate is 500Mbps" [Reference 1: 3GPP TR 36.913v8.0.0 (2008-06), Requirements for Further Advancements for E-UTRA, LTE-A, release 8], in order to achieve the uplink peak rate target, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
Inventor 芮赟李明齐葛泉
Owner SHANGHAI RES CENT FOR WIRELESS TECH
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