[미국특허]
Method for compact representation of multi-code signaling in communication systems
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04B-007/216
H04B-007/204
출원번호
US-0157159
(2002-05-30)
등록번호
US-7321576
(2008-01-22)
발명자
/ 주소
Frederiksen,Frank
Kolding,Troels Emil
출원인 / 주소
Nokia Corporation
대리인 / 주소
Squire, Sanders & Dempsey, LLP
인용정보
피인용 횟수 :
2인용 특허 :
13
초록▼
A method for compact representation of multi-code signaling that includes determining a number of multi-codes and a code offset. A codeword is formulated that includes a code group indicator and an offset indicator. The codeword represents a compact representation of multi-code signaling and is form
A method for compact representation of multi-code signaling that includes determining a number of multi-codes and a code offset. A codeword is formulated that includes a code group indicator and an offset indicator. The codeword represents a compact representation of multi-code signaling and is formulated and may be decoded without the need for a look-up table.
대표청구항▼
What is claimed is: 1. A method to provide compact representation of multi-code signaling, the method comprising: determining a number of multi-codes; determining a code offset; and formulating a codeword, the codeword comprising a code group indicator of the determined number of multi-codes and an
What is claimed is: 1. A method to provide compact representation of multi-code signaling, the method comprising: determining a number of multi-codes; determining a code offset; and formulating a codeword, the codeword comprising a code group indicator of the determined number of multi-codes and an offset indicator of the determined code offset, wherein the formulated codeword comprises a compact representation of multi-code signaling and is decodable without the need for a look-up table, and wherein the codeword is used to assign codes and a code offset to mobile stations. 2. The method according to claim 1, the formulating a codeword further comprising: determining a first term, the first term comprising a minimum of the multi-code number and sixteen minus the multi-code number; determining a first part of the codeword by subtracting one from the first term, the first part representing the code group indicator; determining a second term, the second term equal to zero if seven is larger than or equal to the multi-code number, the second term equal to one if the multi-code number is larger than seven; determining a third term by calculating a fourth term by multiplying the second term by fifteen and subtracting the fourth term from the code offset minus one; determining a second part of the codeword by taking an absolute value of the third term, the second part representing the offset indicator; and forming the codeword by concatenating the first part of the codeword with the second part of the codeword. 3. The method according to claim 1, the code group indicator comprising three bits. 4. The method according to claim 1, the offset indicator comprising four bits. 5. A method for decoding a multi-code signaling codeword comprising: identifying a codeword, the codeword comprising a code group indicator and an offset indicator; determining a number of multi-codes based on the code group indicator of the codeword; and determining a code offset from the offset indicator of the codeword; decoding the codeword by providing the number of multi-codes and code offset; and determining the number of multi-codes and corresponding code offset without the need for a look-up table, and wherein the decoded multi-codes and corresponding code offset provides multi codes to a mobile device. 6. The method according to claim 5, the decoding a multi-code signaling codeword comprising: identifying a first part and a second part of the codeword; the first part representing the code group indicator and the second part representing the offset indicator; calculating a first term, the first term equal to one if the second part is larger than or equal to the first part subtracted from fifteen, else the first term is equal to zero; calculating a second term by multiplying the first term by sixteen; identifying a number of multi-codes by taking an absolute value of the first part plus one minus the second term; calculating a third term, the third term equal to one if the number of multi-codes is larger than or equal to eight, else the third term is equal to zero; calculating a fourth term by multiplying the third term by seventeen; and identifying a code offset by taking an absolute value of the second part plus one minus the fourth term. 7. The method according to claim 5, the code group indicator comprising three bits. 8. The method according to claim 5, the offset indicator comprising four bits. 9. A system for compact representation of multi-code signaling comprising: a network; a base station connected to the network; a network device connected to the base station via the network, wherein the base station determines a number of multi-codes and a code offset for use by the network device, the base station encoding the number of multi-codes and code offset into a codeword comprising a compact representation of multi-code signaling, the codeword being encoded by the base station and decoded by the network device without the need for a look-up table. 10. The system according to claim 9, the network comprising a wireless network. 11. The system according to claim 9, the network device comprising a wireless device. 12. The system according to claim 11, the wireless device comprising one of a wireless phone, a portable computer, and a Personal Digital Assistant (PDA). 13. The system according to claim 9, the base station including an encoding function, the encoding function performing: determining a first term, the first term comprising a minimum of the multi-code number and sixteen minus the multi-code number; determining a first part of the codeword by subtracting one from the first term, the first part representing a code group indicator; determining a second term, the second term equal to zero if seven is larger than the multi-code number, the second term equal to one if the multi-code number is larger than seven; determining a third term by calculating a fourth term by multiplying the second term by fifteen and subtracting the fourth term from the code offset minus one; determining a second part of the codeword by taking an absolute value of the third term, the second part representing a offset indicator; and forming the codeword by concatenating the first part of the codeword with the second part of the codeword. 14. The system according to claim 13, the encoding function comprising at least one of hardware and software. 15. The system according to claim 9, the remote device including a decoding function, the decoding function performing: identifying a first part and a second part of the codeword; the first part representing a code group indicator and the second part representing an offset indicator; calculating a first term, the first term equal to one if the second part is larger than or equal to the first part subtracted from fifteen, else the first term is equal to zero; calculating a second term by multiplying the first term by sixteen; identifying a number of multi-codes by taking an absolute value of the first part plus one minus the second term; calculating a third term, the third term equal to one if the number of multi-codes is larger than or equal to eight, else the third term is equal to zero; calculating a fourth term by multiplying the third term by seventeen; and identifying a code offset by taking an absolute value of the second part plus one minus the fourth term. 16. The system according to claim 15, the decoding function comprising at least one of hardware and software. 17. A mobile device configured to receive a codeword representing multi-code signaling, the mobile device configured to: identify a first part and a second part of the codeword; the first part representing a code group indicator and the second part representing an offset indicator; calculate a first term, the first term equal to one if the second part is larger than or equal to the first part subtracted from fifteen, else the first term is equal to zero; calculate a second term by multiplying the first term by sixteen; determine a number of multi-codes by taking an absolute value of the first part plus one minus the second term; calculate a third term, the third term equal to one if the number of multi-codes is larger than or equal to eight, else the third term is equal to zero; calculate a fourth term by multiplying the third term by seventeen; and determine a code offset by taking an absolute value of the second part plus one minus the fourth term, wherein the codeword is used to assign codes and a code offset to mobile stations. 18. A method to provide representation of multi-code signaling comprising: allocating a number of multi-codes (M) and a code offset (P); and formulating a codeword, the codeword comprising a code group indicator indicating the number of multi-codes and an offset indicator indicating the code offset, the code group indicator equal to the minimum of M-1 and 15-M, the offset indicator being equal to the absolute value of P-1-((M/8 rounded to the nearest lower integer) multiplied by 15), wherein the codeword comprises seven bits, wherein the codeword is used to assign codes and a code offset to mobile stations. 19. The method according to claim 18, further comprising sending the codeword on a High Speed Shared Control Channel (HS-SCCH). 20. The method according to claim 18, further comprising formulating the codeword without the need for a look-up table. 21. A system for compact representation of multi-code signaling comprising: a network; a base station connected to the network; a network device connected to the base station via the network, wherein the base station determines a number of multi-codes and a code offset for use by the network device, the base station encoding the number of multi-codes and code offset into a codeword comprising a compact representation of multi-code signaling, wherein the codeword is decodable without the need of a look-up, table, and the codeword is used to assign codes and a time offset to the network device. 22. The system according to claim 21, the base station including an encoding function, the encoding function performing: allocating a number of multi-codes (M) and a code offset (P); and formulating a codeword, the codeword comprising a code group indicator and an offset indicator, the code group indicator equal to the minimum of M-1 and 15-M, the offset indicator being equal to the absolute value of P-1-((M/8 rounded to the nearest lower integer) multiplied by 15), wherein the codeword comprises seven bits. 23. A base station configured to provide representation of multi-code signaling, the base station comprising: an allocation unit configured to allocate a number of multi-codes (M) and a code offset (P); and a formulation unit configured to formulate a codeword, the codeword comprising a code group indicator indicating the number of multi-codes and an offset indicator indicating the code offset, the code group indicator equal to the minimum of M-1 and 15-M, the offset indicator being equal to the absolute value of P-1-((M/8 rounded to the nearest lower integer) multiplied by 15), wherein the codeword comprises seven bits, wherein the codeword is used to assign codes and a time offset to mobile stations. 24. A network node to provide compact representation of multi-code signaling, the network node configured to: determine a number of multi-codes; determine a code offset; and formulate a codeword, the codeword comprising a code group indicator of the determined number of multi-codes and an offset indicator of the determined code offset, wherein the formulated codeword comprises a compact representation of multi-code signaling and decoded without the need for a look-up table, wherein the codeword is used to assign codes and a time offset to mobile stations. 25. A network node to provide representation of multi-code signaling, the network node comprising: an allocation unit configured to allocate a number of multi-codes (M) and a code offset (P); and a formulation unit configured to formulate a codeword, the codeword comprising a code group indicator indicating the number of multi-codes and an offset indicator indicating the code offset, the code group indicator equal to the minimum of M-1 and 15-M, the offset indicator being equal to the absolute value of P-1-((M/8 rounded to the nearest lower integer) multiplied by 15), wherein the codeword comprises seven bits, wherein the codeword is used to assign codes and a code offset to mobile stations.
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