Title:
STANDALONE SSS FOR RRM AND CHANNEL ESTIMATION ENHANCEMENT
Document Type and Number:
WIPO Patent Application WO/2020/024218
Kind Code:
A1
Abstract:
This disclosure relates generally to wireless communications, and, more particularly, to methods and apparatus for the standalone SSS (s) configured for the CC/BWP with or without SSB to improve the channel estimation, cell search performance and RRM measurement accuracy. For CC/BWP without SS block, UE can be configured with one or multiple standalone SSS (without the associated PSS/PBCH in SSB) for SSS based RRM measurement. For standalone SSS configuration, the timing offset for the starting location (frame/subframe/slot/symbol) of SSS (burst) can be given with the reference to the serving cell timing (e.g., PCell or PSCell). The exact time location of SSS can be configured following the same pattern as SSB with the corresponding SSB index. The time location of SSS can also be configured following a specific pattern with beam index implicitly associated with the SSS time location in a given pattern. For CC/BWP with SSB, the standalone SSS can also be configured close or next to an (associated) SSB as an addition to that SSB (e.g., the standalone SSS (s) symbol (s) is next to each SSB sharing with the same SSB/beam index) to improve the PBCH channel estimation, PSS/SSS sync performance and per-sync performance. In this case, the standalone SSS(s) can use the same or different sequence than SSS of the associated SSB. In case of the different sequence, the sequence of the standalone SSS can be a shift of the SSS sequence of the associated SSB, which can address the cross-correlation performance degradation between some special SSS sequences used by the different cells.
Inventors:
CHEN TAO (CN)
WU WEI-DE (CN)
LEI MIN (CN)
WU WEI-DE (CN)
LEI MIN (CN)
Application Number:
PCT/CN2018/098323
Publication Date:
February 06, 2020
Filing Date:
August 02, 2018
Export Citation:
Assignee:
MEDIATEK SINGAPORE PTE LTD (SG)
CHEN TAO (CN)
WU WEI DE (CN)
LEI MIN (CN)
CHEN TAO (CN)
WU WEI DE (CN)
LEI MIN (CN)
International Classes:
H04W48/12; H04J11/00
Domestic Patent References:
| WO2015148815A1 | 2015-10-01 | |||
| WO2014116049A1 | 2014-07-31 |
Foreign References:
| CN106304346A | 2017-01-04 | |||
| CN105991265A | 2016-10-05 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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