Title:
COVERAGE ENHANCEMENT (CE) LEVEL AND TRANSMIT POWER DETERMINATION TECHNIQUES FOR USER EQUIPMENT (UE) IN EXTENDED COVERAGE
Document Type and Number:
WIPO Patent Application WO/2019/169576
Kind Code:
A1
Abstract:
Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE). The method generally includes: attempting a random access channel (RACH) procedure, at a first coverage enhancement (CE) level, with a base station (BS); determining a random access response (RAR) reception from the BS failed; measuring signal quality of the BS observed at the UE in response to the determined RAR reception failure; determining whether to adjust the first CE level to a second CE level based at least in part on the measured signal quality; and starting a next RACH procedure attempt, at the first CE level or the second CE level, with the BS. In one aspect, a method is provided which may be performed by a wireless device such as a UE, for example, that is preparing for a random access channel (RACH) procedure with a base station (BS). The method generally includes: measuring signal quality of the BS observed at the UE; determining a coverage enhancement (CE) level and a RACH attempt counter value based at least in part of the measured signal quality; and attempting the RACH procedure based at least in part on the determined CE level and RACH attempt counter value.
Inventors:
SEKAR SIVASHANKAR (US)
BATHWAL SAKET (US)
WU PENG (US)
BATHWAL SAKET (US)
WU PENG (US)
Application Number:
PCT/CN2018/078280
Publication Date:
September 12, 2019
Filing Date:
March 07, 2018
Export Citation:
Assignee:
QUALCOMM INC (US)
SEKAR SIVASHANKAR (IN)
BATHWAL SAKET (IN)
WU PENG (CN)
SEKAR SIVASHANKAR (IN)
BATHWAL SAKET (IN)
WU PENG (CN)
International Classes:
H04W52/48
Foreign References:
| US20160302234A1 | 2016-10-13 | |||
| CN105556994A | 2016-05-04 | |||
| CN107771406A | 2018-03-06 | |||
| CN107431986A | 2017-12-01 |
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LIMITED (CN)
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