최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0121678 (1998-07-23) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 269 인용 특허 : 8 |
Applications running on a mobile station or an external network entity such as an Internet service provider may specify on an individual application flow basis a requested quality of service. From that requested quality of service, an optimal type of bearer to transfer the application flow through t
Applications running on a mobile station or an external network entity such as an Internet service provider may specify on an individual application flow basis a requested quality of service. From that requested quality of service, an optimal type of bearer to transfer the application flow through the mobile communications network is determined. For example, a circuit-switched bearer may be allocated if the request is for a real-time service, and a packet-switched bearer may be allocated if the request is for a non-real time type of service. Various other decision making criteria may be employed. A mobile station and a mobile network gateway node each include a mapper for mapping an individual application flow to one of a circuit-switched network and a packet-switched network bearer depending on the quality of service requested for the individual application flow. The network layer quality of service parameters corresponding to an individual application flow are mapped to circuit-switched bearer parameters if the application flow is mapped to the circuit-switched network and to packet-switched bearer parameters if the application flow is mapped to the packet-switched network. The gateway node includes a common access server which permits a mobile station initially establishing a communications session with an external network entity to perform only a single, common access procedure for subsequent communications using one of the circuit-switched and packet-switched networks. After that common access procedure is completed, subsequent application flows between the mobile station and the external network entity are established using abbreviated procedures without having to access the external network entity.
Applications running on a mobile station or an external network entity such as an Internet service provider may specify on an individual application flow basis a requested quality of service. From that requested quality of service, an optimal type of bearer to transfer the application flow through t
Applications running on a mobile station or an external network entity such as an Internet service provider may specify on an individual application flow basis a requested quality of service. From that requested quality of service, an optimal type of bearer to transfer the application flow through the mobile communications network is determined. For example, a circuit-switched bearer may be allocated if the request is for a real-time service, and a packet-switched bearer may be allocated if the request is for a non-real time type of service. Various other decision making criteria may be employed. A mobile station and a mobile network gateway node each include a mapper for mapping an individual application flow to one of a circuit-switched network and a packet-switched network bearer depending on the quality of service requested for the individual application flow. The network layer quality of service parameters corresponding to an individual application flow are mapped to circuit-switched bearer parameters if the application flow is mapped to the circuit-switched network and to packet-switched bearer parameters if the application flow is mapped to the packet-switched network. The gateway node includes a common access server which permits a mobile station initially establishing a communications session with an external network entity to perform only a single, common access procedure for subsequent communications using one of the circuit-switched and packet-switched networks. After that common access procedure is completed, subsequent application flows between the mobile station and the external network entity are established using abbreviated procedures without having to access the external network entity. he changing header fields but excluding at least one of the invariant header fields, along with data, in response to successfully decoding that at least one subsequently received header using the determinate values for at least one of the invariant header fields. 3. A method according to claim 1: wherein the step of initially decoding comprises the step of initially predictive decoding at least one initially received header to identify soft values for symbols associated with the plurality of header fields, the plurality of header fields including invariant header fields having determinate values and changing header fields having changing values; and wherein the step of subsequently decoding comprises the step of subsequently predictive decoding at least one subsequently received header using a probability value of unity for symbols associated with at least one of the invariant header fields. 4. A method according to claim 1 wherein the step of initially decoding at least one initially received header to identify values for the plurality of header fields, is repeatedly performed for a predetermined number of times or until the values for the plurality of header fields satisfy a selection criterion. 5. A method according to claim 1 wherein the step of subsequently decoding comprises the steps of: subsequently decoding at least one subsequently received header using progressively more reliable estimates of the values for at least one of the invariant header fields; and upon successful decoding, decoding at least one subsequently received header using the determinate values for at least one of the invariant header fields. 6. A method according to claim 5 wherein the following step is performed prior to the subsequent decoding step: buffering the headers until successful decoding. 7. A method for decoding a Radio Link Control/Medium Access Control (RLC/MAC) header that includes a plurality of header fields and that is repeatedly transmitted and received along with data in a General Packet Radio System (GPRS) on a Global System for Mobile communication (GSM) radio channel, the decoding method comprising the steps of: initially decoding at least one initially received RLC/MAC header to identify values for the plurality of header fields, the plurality of header fields including invariant header fields having determinate values and a Coding and Puncturing Scheme (CPS) header field having changing value; and subsequently decoding at least one subsequently received RLC/MAC header using the determinate values for at least one of the invariant header fields. 8. A method according to claim 7 wherein a Power Reduction (PR) field of the RLC/MAC header also has changing values, the subsequently decoding step comprising the step of: subsequently decoding at least one subsequently received header using the determinate values for at least one of the invariant header fields. 9. A method according to claim 7 wherein the subsequently decoding step is follows by the step of: decoding a second header, including the CPS header field but excluding at least one of the invariant header fields, along with data, in response to successfully decoding the at least one subsequently received header using the determinate values for at least one of the invariant header fields. 10. A method according to claim 8 wherein the subsequently decoding step is followed by the step of: decoding a second header, including the CPS and the PR header fields but excluding at least one of the invariant header fields, along with data, in response to successfully decoding the at least one subsequently received header using the determinate values for at least one of the invariant header fields. 11. A method according to claim 7: wherein the step of initially decoding comprises the step of initially predictive decoding at least one initially received header to identify soft values for symbols associated with the plurality of header fields, t he plurality of header fields including invariant header fields having determinate values and a CPS header field having changing values; and wherein the step of subsequently decoding comprises the step of subsequently predictive decoding at least one subsequently received header using a probability value of unity for symbols associated with at least one of the invariant header fields. 12. A method according to claim 7 wherein the step of initially decoding at least one initially received header to identify values for the plurality of header fields, is repeatedly performed for a predetermined number of times or until the values for the plurality of header fields satisfy a selection criterion. 13. A method according to claim 7 wherein the step of subsequently decoding comprises the steps of: subsequently decoding at least one subsequently received RLC/MAC header using progressively more reliable estimates of the values for at least one of the invariant header fields; and upon successful decoding, decoding at least one subsequently received RLC header using the determinate values for at least one of the invariant header fields. 14. A method according to claim 13 wherein the following step is performed prior to the subsequent decoding step: buffering the RLC/MAC headers until successful decoding. 15. A method of decoding headers that are repeatedly transmitted and received along with data on a radio channel during a persistent flow communication session, the decoding method comprising the steps of: repeatedly transmitting a first header, including invariant header fields and changing header fields, along with data associated with the persistent flow communication session, over the radio channel; decoding the first header; repeatedly transmitting a second header, including the changing header fields but excluding at least one of the invariant header fields, along with data associated with the persistent flow communication session, over the radio channel, in response to successful decoding of the first header; and decoding the second header. 16. A method according to claim 15 wherein the first header and the second header have same coded length, wherein the step of decoding the first header is performed at a first decoding rate and wherein the step of decoding the second header is performed at a second decoding rate that is higher than the first decoding rate. 17. A method according to claim 15 wherein the step of repeatedly transmitting a second header comprises the step of repeatedly transmitting the second header along with at least one stealing bit to indicate transmission of the second header. 18. A method of decoding Radio Link Control/Medium Access Control (RLC/MAC) headers that are repeatedly transmitted and received along with data in a General Packet Radio System (GPRS) on a Global System for Mobile communication (GSM) radio channel during a persistent flow communication session, the decoding method comprising the steps of: repeatedly transmitting a first RLC/MAC header, including invariant header fields and a Coding and Puncturing Scheme (CPS) header field having changing values, along with data associated with the persistent flow communication session, over the GSM radio channel; decoding the first header, including the invariant header fields and the CPS header field; repeatedly transmitting a second RLC/MAC header, including the CPS header field but excluding at least one of the invariant header fields, along with data associated with the persistent flow communication session, over the GSM radio channel, in response to successful decoding of the first header; and decoding the second RLC/MAC header, including the CPS header field but excluding at least one of the invariant header fields. 19. A method according to claim 18 wherein a Power Reduction (PR) field of the RLC/MAC header also has changing values and wherein the step of repeatedly transmitting a second RLC/MAC header comprises the s tep of: repeatedly transmitting a second RLC/MAC header, including the CPS and PR header fields but excluding at least one of the invariant header fields, along with data associated with the persistent flow communication session, over the GSM radio channel, in response to the indicating step. 20. A method according to claim 18 wherein the first RLC/MAC header and the second RLC/MAC header have 60 bit coded length, wherein the step of decoding the first RLC/MAC header is performed at a 1/3 decoding rate and wherein the step of decoding the second RLC/MAC header is performed at a 1/12 decoding rate. 21. A method according to claim 18 wherein the step of repeatedly transmitting a second RLC/MAC header comprises the step of repeatedly transmitting the second RLC/MAC header along with at least one stealing bit to indicate transmission of the second RLC/MAC header. 22. A method of transmitting headers along with data on a radio channel during a persistent flow communication session, the method comprising the steps of: repeatedly transmitting a first header, including invariant header fields and changing header fields, along with data associated with the persistent flow communication session, over the radio channel; receiving an indication that the first header has been decoded successfully; and repeatedly transmitting a second header, including the changing header fields but excluding at least one of the invariant header fields, along with data associated with the persistent flow communication session, over the radio channel, in response to the received indication. 23. A method according to claim 22 wherein the first header and the second header have same code length, wherein the step of repeatedly transmitting the first header is performed at a first coding rate and wherein the step of repeatedly transmitting the second header is performed at a second coding rate that is higher than the first coding rate. 24. A method according to claim 22 wherein the step of repeatedly transmitting a second header comprises the step of repeatedly transmitting the second header along with at least one stealing bit to indicate transmission of the second header. 25. A method of transmitting Radio Link Control/Medium Access Control (RLC/MAC) headers along with data in a General Packet Radio System (GPRS) on a Global System for Mobile communication (GSM) radio channel during a persistent flow communication session, the method comprising the steps of: repeatedly transmitting a first RLC/MAC header, including invariant header fields and a Coding and Puncturing Scheme (CPS) header field having changing values, along with data associated with the persistent flow communication session, over the GSM radio channel; receiving an indication that the first header, including the invariant header fields and the CPS header fields, has been decoded successfully; and repeatedly transmitting a second RLC/MAC header, including the CPS header field but excluding at least one of the invariant header fields, along with data associated with the persistent flow communication session, over the GSM radio channel, in response to the received indication. 26. A method according to claim 25 wherein a Power Reduction (PR) field of the RLC/MAC header also has changing values and wherein the step of repeatedly transmitting a second RLC/MAC header comprises the step of: repeatedly transmitting a second RLC/MAC header, including the CPS and PR header fields but excluding at least one of the invariant header fields, along with data associated with the persistent flow communication session, over the GSM radio channel, in response to the indicating step. 27. A method according to claim 25 wherein the first RLC/MAC header and the second RLC/MAC header have 60-bit coded length, wherein the step of decoding the first RLC/MAC header is performed at a 1/3 decoding rate and wherein the step of decoding the second RLC/MAC header is performed at a 1/12 decoding rate. 28. A method according to claim 25 wherein the step of repeatedly transmitting a second RLC/MAC header comprises the step of repeatedly transmitting the second RLC/MAC header along with at least one stealing bit to indicate transmission of the second RLC/MAC header. 29. A method of decoding headers that are repeatedly received along with data on a radio channel during a persistent flow communication session, the decoding method comprising the steps of: repeatedly receiving a first header, including invariant header fields and changing header fields, along with data associated with the persistent flow communication session, over the radio channel; decoding the first header, including the invariant header fields and the changing header fields; indicating that the first header, including the invariant header fields and the changing header fields, has been decoded successfully; repeatedly receiving a second header, including the changing header fields but excluding at least one of the invariant header fields, along with data associated with the persistent flow communication session, over the radio channel; and decoding the second header, including the changing header fields but excluding at least one of the invariant header fields. 30. A method according to claim 29 wherein the first header and the second header have same coded length, wherein the step of decoding the first header is performed at a first decoding rate and wherein the step of decoding the second header is performed at a second decoding rate that is higher than the first decoding rate. 31. A method according to claim 29 wherein the step of repeatedly receiving a second header comprises the step of repeatedly receiving the second header along with at least one stealing bit to indicate the second header. 32. A method of decoding Radio Link control/Medium Access Control (RLC/MAC) headers that are repeatedly received along with data in a General Packet Radio System (GPRS) on a Global System for Mobile communication (GSM) radio channel during a persistent flow communication session, the decoding method comprising the steps of: repeatedly receiving a first RLC/MAC header, including invariant header fields and a Coding and Puncturing Scheme (CPS) header field having changing values, along with data associated with the persistent flow communication session, over the GSM radio channel; decoding the first header, including the invariant header fields and the CPS header field; indicating that the first header, including the invariant header fields and the CPS header fields, has been decoded successfully; repeatedly receiving a second RLC/MAC header, including the CPS header field but excluding at least one of the invariant header fields, along with data associated with the persistent flow communication session, over the GSM radio channel; and decoding the second RLC/MAC header, including the CPS header field but excluding at least one of the invariant header fields. 33. A method according to claim 32 wherein a Power Reduction (PR) field of the RLC/MAC header also has changing values and wherein the repeatedly receiving step comprises the step of: repeatedly receiving a second RLC/MAC header, including the CPS and PR header fields but excluding at least one of the invariant header fields, along with data associated with the persistent flow communication session, over the GSM radio channel. 34. A method according to claim 32 wherein the first RLC/MAC header and the second RLC/MAC header have 60-bit coded length, wherein the step of decoding the first RLC/MAC header is performed at a 1/3 decoding rate and wherein the step of decoding the second RLC/MAC header is performed at a 1/12 decoding rate. 35. A method according to claim 32 wherein the step of repeatedly receiving a second RLC/MAC header comprises the step of repeatedly receiving the second RLC/MAC header along with at least one stealing bit to indicate the second RLC/MAC header. 36. A system for decodin g a header that includes a plurality of header fields and that is repeatedly transmitted and received along with data on a radio channel, the decoding system comprising: means for initially decoding at least one initially received header to identify values for the plurality of header fields, the plurality of header fields including invariant header fields having determinate values and changing header fields having changing values; and means for subsequently decoding at least one subsequently received header using the determinate values for at least one of the invariant header fields. 37. A system according to claim 36 further comprising: means for decoding a second header, including the changing header fields but excluding at least one of the invariant header fields, along with data, in response to the means for subsequently decoding at least one subsequently received header using the determinate values for at least one of the invariant header fields. 38. A system according to claim 36: wherein the means for initially decoding comprises means for initially predictive decoding at least one initially received header to identify soft values for symbols associated with the plurality of header fields, the plurality of header fields including invariant header fields having determinate values and changing header fields having changing values; and wherein the means for subsequently decoding comprises means for subsequently predictive decoding at least one subsequently received header using a probability value of unity for symbols associated with at least one of the invariant header fields. 39. A system according to claim 36 wherein the means for initially decoding comprises means for initially decoding at least one initially received header to identify values for the plurality of header fields for a predetermined number of times or until the values for the plurality of header fields satisfy a selection criterion. 40. A system according to claim 36 wherein the means for subsequently decoding comprises: means for subsequently decoding at least one subsequently received header using progressively more reliable estimates of the values for at least one of the invariant header fields; and means for decoding at least one subsequently received header using the determinate values for at least one of the invariant header fields upon successful decoding. 41. A system according to claim 40 further comprising: means for buffering the headers until successful decoding. 42. A system for decoding a Radio Link Control/Medium Access Control (RLC/MAC) header that includes a plurality of header fields and that is repeatedly transmitted and received along with data in a Generalized Packet Radio Service (GPRS) on a Global System for Mobile communication (GSM) radio channel, the system comprising: means for initially decoding at least one initially received RLC/MAC header to identify values for the plurality of header fields, the plurality of header fields including invariant header fields having determinate values and a Coding and Puncturing Scheme (CPS) header field having changing value; and means for subsequently decoding at least one subsequently received header using the determinate values for at least one of the invariant header fields. 43. A system according to claim 42 wherein a Power Reduction (PR) field of the RLC/MAC header also has changing values, the means for subsequently decoding comprising: means for subsequently decoding at least one subsequently received header using the determinate values for at least one of the invariant header fields. 44. A system according to claim 42 further comprising: means for decoding a second header, including the CPS header field but excluding at least one of the invariant header fields, along with data, in response to the means for subsequently decoding the at least one subsequently received header using the determinate values for at least one of the invariant header
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