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Method for generating DMRS sequence and sending initial value of DMRS sequence, terminal, and base station

An initial value and sequence technology, applied in the field of terminals and base stations, can solve problems such as DMRS ports cannot be orthogonalized, affect system performance, and interfere, and achieve the effects of increasing flexibility, reducing system interference, and improving performance

Active Publication Date: 2016-12-14
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if E-PDCCH and PDSCH use the same DMRS sequence, at least one group of DMRS ports cannot be orthogonal, which will cause large interference and affect system performance

Method used

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  • Method for generating DMRS sequence and sending initial value of DMRS sequence, terminal, and base station
  • Method for generating DMRS sequence and sending initial value of DMRS sequence, terminal, and base station

Examples

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Embodiment Construction

[0025] Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0026] The method for generating the DMRS sequence of the present application is that in the communication system, the same user terminal generates different initial values ​​of the DMRS sequence corresponding to E-PDCCH and EPDSCH respectively, that is to say, the same user terminal generates the initial values ​​corresponding to E-PDCCH and EPDSCH Two different DMRS sequences for EPDSCH.

[0027] figure 1 is a schematic flowchart 1000 of a method for generating a DMRS sequence according to an embodiment of the present application. Such as figure 1 As shown, in step S110, the terminal obtains the initial value of the demodulation reference signal (DMRS) sequence corresponding to the enhanced physical downlink control channel (E-PDCCH) and the demodulation reference signal (DMRS) corresponding to the physical downlink shared channel (PDSCH) Sequence...

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Abstract

The present application discloses a method for generating a DMRS sequence, including: the terminal obtains the initial value of the DMRS sequence corresponding to the E-PDCCH, and obtains the initial value of the DMRS sequence corresponding to the PDSCH; uses the initial value of the DMRS sequence corresponding to the E-PDCCH to generate the corresponding E-PDCCH The DMRS sequence of the PDCCH, and using the initial value of the DMRS sequence corresponding to the PDSCH to generate the DMRS sequence corresponding to the PDSCH; wherein, the initial value of the DMRS sequence corresponding to the E-PDCCH is different from the initial value of the DMRS sequence corresponding to the PDSCH. The present application also discloses a method for sending an initial value of a DMRS sequence, as well as a corresponding terminal and a base station. Through the method and system of the present application, system interference can be reduced, system performance can be improved, and the flexibility of communication system scheduling can be increased.

Description

technical field [0001] The present application relates to the communication field, and in particular to a method for generating a DMRS sequence, a method for sending an initial value of a DMRS sequence, and a corresponding terminal and base station. Background technique [0002] In the LTE Rel-10 protocol, a DMRS (Demodulation reference signal; demodulation reference signal) used for data demodulation can have up to 8 ports. According to the definition of DMRS sequences in the Rel-10 version, the DMRS sequences corresponding to users in each cell have at most two different sequences. When the system adopts multi-user MIMO, MU-MIMO can support up to four single-stream users, or two dual-stream users. [0003] In the current discussion on the Rel-11 CoMP topic, it has been agreed that the system can configure different initial values ​​for each UE, so that users in each cell can use more different sequences. [0004] In the current standardization progress of Rel-11, it is d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/08H04W72/12H04W72/54
CPCH04L5/0023H04L5/0048H04L5/0053H04L5/008H04L27/2613
Inventor 史志华韩璐胡丽洁王锐
Owner CHINA MOBILE COMM GRP CO LTD