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Method and device for indicating transmission mode

A transmission method and indication technology, applied in the field of communication, can solve problems such as not supporting MIMO multi-user transmission

Active Publication Date: 2015-08-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is proposed for the problem that the demodulation pilot-based MIMO multi-user transmission is not supported in LTE version 10. Therefore, the main purpose of the present invention is to provide a method and device for indicating a transmission mode to solve the above-mentioned problems. question

Method used

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  • Method and device for indicating transmission mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Assumptions in Example 1:

[0073] a. In MU-MIMO (multi-user MIMO), the maximum number of multiplexing layers is 4, and the maximum number of multiplexing layers per UE is 2;

[0074] b.DMRS has three modes, mode 1: the maximum number of layers is 1 and 2, mode 2: the maximum number of layers is 3 and 4, mode 3: the maximum number of layers is 5 to 8;

[0075] c. Only notify the UE of the DMRS Pattern, and different DMRS Patterns have different signaling.

Embodiment 11

[0077] DCI Format can represent one or two transport block (TB) signaling (unified signaling)

[0078] The DCI Format X of embodiment 1.1 uses the same set of signaling to support the transmission of one and two transmission (TB) blocks at the same time:

[0079]SU-MIMO has 8 states

[0080] Status: 1st floor to 8th floor; (number of floors)

[0081] MU-MIMO has 6 states

[0082] Rank1:

[0083] DMRS mode 1: layer 1, layer 2 (index of layer)

[0084] DMRS Mode 2: Layer 1, Layer 2, Layer 3, Layer 4

[0085] Rank2: (2 states)

[0086] DMRS Mode 2: Layer 1 and Layer 2, Layer 3 and Layer 4

[0087] According to the above-mentioned states merged into the states described in the table, the states in the table no longer distinguish between SU ​​and MU;

[0088] Table 1 is based on the signaling, layer index and DMRS mode table of embodiment 1.1

[0089]

[0090] figure 2 is a schematic diagram according to Embodiment 1.1 of the present invention, such as figure 2 As sh...

Embodiment 12

[0096] In DCI Format, there is only signaling representing one transport (TB) block

[0097] The DCI Format X of Embodiment 1.2 corresponds to a transmission (TB) block, DCIFormat X represents a single-layer transmission, or a transmission (TB) block corresponds to two-layer transmission

[0098] SU-MIMO has 8 states

[0099] Status: 1st floor to 8th floor; (number of floors)

[0100] MU-MIMO has 6 states

[0101] Rank1:

[0102] DMRS mode 1: layer 1, layer 2 (index of layer)

[0103] DMRS Mode 2: Layer 1, Layer 2, Layer 3, Layer 4

[0104] Rank2: (2 states)

[0105] DMRS Mode 2: Layer 1 and Layer 2, Layer 3 and Layer 4

[0106] According to the above-mentioned states merged into the states described in the table, the states in the table no longer distinguish between SU ​​and MU;

[0107] Table 2 is based on the signaling, layer index and DMRS mode table of embodiment 1.2

[0108]

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Abstract

The present invention discloses a method and device for indicating transmission mode. The method includes: adding indicating information in downlink control information format, wherein, the indicating information is used for indicating control information of transmission mode which supports user device. The present invention enables supporting multi-input multi-output(MIMO) multiuser transmission based on demodulation reference pilot.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for indicating a transmission mode. Background technique [0002] In wireless communication, if multiple antennas are used at the sending end (eNB), we can adopt spatial multiplexing to increase the transmission rate, that is, different data are transmitted at different antenna positions on the same time-frequency resource at the sending end, and in The receiving end (UE) also uses multiple antennas. We can allocate the resources of all antennas to the same user in the case of a single user. This transmission form is called SU-MIMO (Single User MIMO). In addition, we can also use multi-user In the case of different antenna space resources are allocated to different users, this transmission form is called MU-MIMO (multi-user MIMO). If the transmission system needs to support single-user MIMO and multi-user MIMO at the same time, it is necessary for the eNB t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/06H04B7/04
CPCH04B7/0689H04B7/0452
Inventor 李儒岳戴博郁光辉徐俊张峻峰
Owner ZTE CORP