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US 11,122,529 B2Granted
Method and apparatus for broadcast channel configuration and broadcast channel transmission and reception for communication system
AssigneeInnovative Technology Lab Co., Ltd.
InventorsDong Hyun Park, Sung Jun Yoon
Life of this patent
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Abstract
A method, apparatus, and system for generating and transmitting a physical broadcast channel (PBCH) are provided. A base station may perform a first scrambling process on PBCHs in a time period before a channel coding, and perform a second scrambling process after the channel coding. PHCH payloads and PBCH DMRS may provide information bits to be used in the scrambling processes.
Claims12
An apparatus comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the apparatus to:
- initialize, based on a cell identifier of a base station, a scrambling sequence generator to scramble a portion of each physical broadcast channel (PBCH) in eight consecutive radio frames, wherein each radio frame in the eight consecutive radio frames has a duration of 10 ms;
- determine a plurality of synchronization signal (SS) blocks in the eight consecutive radio frames, wherein each SS block comprises a PBCH;
- generate, based on the initialized scrambling sequence generator, a scrambling sequence comprising four different sequence parts;
- scramble PBCHs in a first 20 ms of the eight consecutive radio frames by applying a first one of the four different sequence parts of the scrambling sequence;
- scramble PBCHs in a second 20 ms of the eight consecutive radio frames by applying a second one of the four different sequence parts of the scrambling sequence;
- scramble PBCHs in a third 20 ms of the eight consecutive radio frames by applying a third one of the four different sequence parts of the scrambling sequence;
- scramble PBCHs in a fourth 20 ms of the eight consecutive radio frames by applying a fourth one of the four different sequence parts of the scrambling sequence;
- receive a PBCH demodulation reference signal (DMRS) indicating first and second least significant bits of an SS block index;
- and
- perform, based on the first and second least significant bits of the SS block index, a second scrambling on a corresponding PBCH in,
- the first 20 ms;
- the second 20 ms;
- the third 20 ms;
- or
- the fourth 20 ms,
- wherein each of the first 20 ms, the second 20 ms, the third 20 ms, or the fourth 20 ms comprises a maximum of four SS blocks.
16 more elements
An apparatus comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the apparatus to:
- initialize, based on a cell identifier of a base station, a scrambling sequence generator to scramble a portion of physical broadcast channels (PBCHs) in eight consecutive radio frames, wherein each radio frame in the eight consecutive radio frames has a first duration;
- determine a plurality of synchronization signal (SS) blocks in the eight consecutive radio frames, wherein each SS block comprises a PBCH;
- generate, based on the initialized scrambling sequence generator, a first scrambling sequence comprising a plurality of different sequence parts;
- scramble PBCHs in first two consecutive radio frames of the eight consecutive radio frames by applying a first one of the plurality of different sequence parts of the first scrambling sequence;
- scramble PBCHs in second two consecutive radio frames of the eight consecutive radio frames by applying a second one of the plurality of different sequence parts of the first scrambling sequence;
- scramble PBCHs in third two consecutive radio frames of the eight consecutive radio frames by applying a third one of the plurality of different sequence parts of the first scrambling sequence;
- scramble PBCHs in fourth two consecutive radio frames of the eight consecutive radio frames by applying a fourth one of the plurality of different sequence parts of the first scrambling sequence,
- receive a PBCH demodulation reference signal (DMRS) indicating three least significant bits of an SS block index;
- and
- perform, based on the three least significant bits of the SS block index, a second scrambling on a corresponding PBCH in the first two consecutive radio frames,
- wherein the first two consecutive radio frames comprise a maximum of eight SS blocks or a maximum of 64 SS blocks.
11 more elements
An apparatus comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the apparatus to:
- initialize, based on a cell identifier of a base station, a scrambling sequence generator to scramble a portion of physical broadcast channels (PBCHs) in a plurality of consecutive radio frames, wherein each radio frame in the plurality of consecutive radio frames has a first duration;
- determine a plurality of synchronization signal (SS) blocks in the plurality of consecutive radio frames, wherein each SS block comprises a PBCH;
- generate, based on the initialized scrambling sequence generator, a first scrambling sequence comprising a plurality of different sequence parts;
- scramble PBCHs in a first group of consecutive radio frames of the plurality of consecutive radio frames by applying a first one of the plurality of different sequence parts of the first scrambling sequence;
- scramble PBCHs in a second group of consecutive radio frames of the plurality of consecutive radio frames by applying a second one of the plurality of different sequence parts of the first scrambling sequence;
- scramble PBCHs in a third group of consecutive radio frames of the plurality of consecutive radio frames by applying a third one of the plurality of different sequence parts of the first scrambling sequence;
- scramble PBCHs in a fourth group of consecutive radio frames of the plurality of consecutive radio frames by applying a fourth one of the plurality of different sequence parts of the first scrambling sequence;
- receive a PBCH demodulation reference signal (DMRS) indicating three least significant bits of an SS block index;
- and
- perform, based on the three significant bits of the SS block index, a second scrambling on a corresponding PBCH in the first group of consecutive radio frames,
- wherein the first group of consecutive radio frames comprise a maximum of eight SS blocks or a maximum of 64 SS blocks.
11 more elements
Dependencies are inferred from the claim text.