Encoding and detecting cell-specific information in a telecommunication system

An apparatus in a telecommunication system, comprising a processor configured to:

• encode cell-specific information by a synchronization code;
• and
• send a synchronization signal comprising the synchronization code, wherein the synchronization code comprises a first repetitive cyclically permutable codeword generated from a first codeword
• (
• c
• 1
• ,
• c
• 2
• ,
• …
• ⁢
• ⁢
• c
• i
• ⁢
• ⁢
• …
• ⁢
• ,
• c
• ⌈
• M
• 2
• ⌉
• )
• ,
• where
• ⌈
• M
• 2
• ⌉
• is the smallest integer not less than M/2, 0≦ci≦N, 1≦i≦M for all i, M, N are positive integers, and the repetitive structure of the first repetitive cyclically permutable codeword is given by repeating the value of at least one codeword element of the first repetitive cyclically permutable codeword in at least one other codeword element position within the first repetitive cyclically permutable codeword.

A method of detecting cell-specific information in a telecommunication system, comprising:

• receiving a synchronization signal comprising a synchronization code;
• and
• detecting cell-specific information by decoding the synchronization code, wherein the synchronization code comprises a first repetitive cyclically permutable codeword generated from a first codeword
• (
• c
• 1
• ,
• c
• 2
• ,
• …
• ⁢
• ⁢
• c
• i
• ⁢
• ⁢
• …
• ⁢
• ,
• c
• ⌈
• M
• 2
• ⌉
• )
• ,
• where
• ⌈
• M
• 2
• ⌉
• is the smallest integer not less than M/2, 0≦ci≦N, 1≦i≦M for all i, M, N are positive integers, and the repetitive structure of the first repetitive cyclically permutable codeword is given by repeating the value of at least one codeword element of the first repetitive cyclically permutable codeword in at least one other codeword element position within the first repetitive cyclically permutable codeword.

An apparatus in a telecommunication system, comprising a processor configured to:

• receive a synchronization signal comprising a synchronization code;
• and
• detect cell-specific information by decoding the synchronization code, wherein the synchronization code comprises a first repetitive cyclically permutable codeword generated from a first codeword
• (
• c
• 1
• ,
• c
• 2
• ,
• …
• ⁢
• ⁢
• c
• i
• ⁢
• ⁢
• …
• ⁢
• ,
• c
• ⌈
• M
• 2
• ⌉
• )
• ,
• where
• ⌈
• M
• 2
• ⌉
• is the smallest integer not less than M/2, 0≦ci≦N, 1≦i≦M for all i, M, N are positive integers, and the repetitive structure of the first repetitive cyclically permutable codeword is given by repeating the value of at least one codeword element of the first repetitive cyclically permutable codeword in at least one other codeword element position within the first repetitive cyclically permutable codeword.