IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0377971
(2007-06-20)
|
등록번호 |
US-8718695
(2014-05-06)
|
우선권정보 |
SE-0601713 (2006-08-18) |
국제출원번호 |
PCT/SE2007/050447
(2007-06-20)
|
§371/§102 date |
20100609
(20100609)
|
국제공개번호 |
WO2008/020804
(2008-02-21)
|
발명자
/ 주소 |
- Peisa, Janne
- Torsner, Johan
- Sagfors, Mats
- Wager, Stefan
|
출원인 / 주소 |
- Telefonaktiebolaget LM Ericsson (Publ)
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
8 |
초록
▼
The present invention relates to a method and an arrangement for reducing a state transition time from a power saving state for a user equipment (18) in a communication network. The state transition time is reduced by retaining in the user equipment (18) one or more information parameter, such as th
The present invention relates to a method and an arrangement for reducing a state transition time from a power saving state for a user equipment (18) in a communication network. The state transition time is reduced by retaining in the user equipment (18) one or more information parameter, such as the radio network temporary identifier for a high speed downlink shared channel (H-RNTI), when performing a state transition to said power saving state so as to enable a time reduction when said user equipment switches back from said power saving state.
대표청구항
▼
1. A method of reducing a state transition time from a power saving state for a user equipment in a communication network, wherein the method comprises the steps of: retaining in said user equipment one or more information parameters when performing a state transition to said power saving state so a
1. A method of reducing a state transition time from a power saving state for a user equipment in a communication network, wherein the method comprises the steps of: retaining in said user equipment one or more information parameters when performing a state transition to said power saving state so as to enable a time reduction when said user equipment switches back from said power saving state, wherein said one or more information parameters comprises a radio network temporary identifier for a high speed downlink shared channel (H-RNTI). 2. The method according to claim 1, wherein the method further comprises the steps of: detecting a need for performing a state transition from said power saving state;transmitting an initial message containing a UTRAN radio network temporary identifier (U-RNTI);receiving an indication of a radio bearer configuration from a communication network entity; and,responding with a completion message to said communication network entity. 3. The method according to claim 2, wherein said initial message contains channel quality indicator (CQI) information. 4. The method according to claim 2, wherein said initial message is a cell update message. 5. The method according to claim 2, wherein said completion message is one of the following: a radio bearer reconfiguration complete message; or, a UTRAN mobility information complete message. 6. The method according to claim 2, wherein said indication of a radio bearer configuration is a cell update confirm message that is carried on said high speed downlink shared channel and using said retained H-RNTI. 7. The method according to claim 1, wherein said power saving state is a CELL_PCH state. 8. The method according to claim 1, wherein said power saving state is a URA_PCH state. 9. The method according to claim 1, wherein said one or more information parameters comprises a radio network temporary identifier for a cell (C-RNTI). 10. The method according to claim 1, wherein said one or more information parameters comprises one of the following: a used dedicated physical channel (DPCH); or, a used fractional dedicated physical channel (F-DPCH). 11. The method according to claim 10, wherein the method further comprises the steps of: detecting a need for performing a state transition from said power saving state;transmitting an initial message containing a UTRAN radio network temporary identifier (U-RNTI) to a communication network entity;synchronizing to said retained downlink dedicated physical channel (DPCH);receiving an indication of a radio bearer configuration and allocation information of said downlink dedicated physical channel (DPCH) from said communication network entity;keeping current synchronization if said communication network entity has indicated that said retrained dedicated physical channel (DPCH) still is allocated to said user equipment; or,otherwise, performing a new synchronization to a new dedicated physical channel (DPCH) indicated by said communication network entity. 12. The method according to claim 10, wherein said one or more information parameters includes a downlink fractional DPCCH channelization code. 13. The method according to claim 12, wherein the method further comprises the steps of: detecting a need for performing a state transition from said power saving state;transmitting an initial message containing a UTRAN radio network temporary identifier (U-RNTI) to a communication network entity;synchronizing to said retained downlink fractional dedicated physical channel (FDPCH);receiving an indication of a radio bearer configuration and allocation information of said downlink fractional dedicated physical channel (F-DPCH) from said communication network entity;keeping current synchronization if said communication network entity has indicated that said retrained fractional dedicated physical channel (F-DPCH) still is allocated to said user equipment; or,otherwise, performing a new synchronization to a new fractional dedicated physical channel (F-DPCH) indicated by said communication network entity. 14. The method according to claim 1, wherein said one or more information parameters includes uplink channelization codes. 15. The method according to claim 14, wherein the method further comprises the steps of: detecting a need for performing a state transition from said power saving state;verifying that said uplink channelization codes are still valid; and,starting synchronization directly after transmission of a cell update message. 16. An arrangement for reducing a state transition time from a power saving state for a user equipment in a communication network, wherein the arrangement comprises means for retaining in said user equipment one or more information parameters when performing a state transition to said power saving state so as to enable a time reduction when said user equipment switches back from said power saving state, wherein said one or more information parameters comprises a radio network temporary identifier for a high speed downlink shared channel (H-RNTI). 17. The arrangement according to claim 16, wherein the arrangement further comprises: means for detecting a need for performing a state transition from said power saving state;means for transmitting an initial message containing a UTRAN radio network temporary identifier (U-RNTI);means for receiving an indication of a radio bearer configuration from a communication network entity;means for responding with a completion message to said communication network entity. 18. The arrangement according to claim 17, wherein said initial message contains channel quality indicator (COI) information. 19. The arrangement according to claim 17, wherein said initial message is a cell update message. 20. The arrangement according to claim 17, wherein said completion message is one of the following: a radio bearer reconfiguration complete message; or, a UTRAN mobility information complete message. 21. The arrangement according to claim 17, wherein said indication of a radio bearer configuration is a cell update confirm message that is carried on said high speed downlink shared channel and using said retained H-RNTI. 22. The arrangement according to claim 16, wherein said power saving state is a CELL_PCH state. 23. The arrangement according to claim 16, wherein said power saving state is a URA_PCH state. 24. The arrangement according to claim 16, wherein said one or more information parameters comprises a radio network temporary identifier for a cell (CRNTI). 25. The arrangement according to claim 16, wherein said one or more information parameters comprises one of the following: a used dedicated physical channel (DPCH); or, a used fractional dedicated physical channel (F-DPCH). 26. The arrangement according to claim 25, wherein the arrangement further comprises: means for detecting a need for performing a state transition from said power saving state;means for transmitting an initial message containing a UTRAN radio network temporary identifier (U-RNTI) to a communication network entity;means for synchronizing to said retained downlink dedicated physical channel (DPCH);means for receiving an indication of a radio bearer configuration and allocation information of said downlink dedicated physical channel (DPCH) from said communication network entity;means for keeping current synchronization if said communication network entity has indicated that said retrained dedicated physical channel (DPCH) still is allocated to said user equipment; or,otherwise, means for performing a new synchronization to a new dedicated physical channel indicated by said communication network entity. 27. The arrangement according to claim 25, wherein said one or more information parameters includes a downlink fractional DPCCH channelization code. 28. The arrangement according to claim 27, wherein the arrangement further comprises: means for detecting a need for performing a state transition from said power saving state;means for transmitting an initial message containing a UTRAN radio network temporary identifier (U-RNTI) to a communication network entity;means for synchronizing to said retained downlink fractional dedicated physical channel (F-DPCH);means for receiving an indication of a radio bearer configuration and allocation information of said downlink fractional dedicated physical channel (FDPCH) from said communication network entity;means for keeping current synchronization if said communication network entity has indicated that said retrained fractional dedicated physical channel still is allocated to said user equipment; or,otherwise, means for performing a new synchronization to a new fractional dedicated physical channel (F-DPCH) indicated by said communication network entity. 29. The arrangement according to claim 16, wherein said one or more information parameters includes uplink channelization codes. 30. The arrangement according to claim 29, wherein the arrangement further comprises: means for detecting a need for performing a state transition from said power saving state;means for verifying that said uplink channelization codes are still valid;means for starting synchronization directly after transmission of a cell update message. 31. A user equipment, wherein it comprises an arrangement according to claim 16.
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