Claims
- 1. A radio telephone system comprising:
- a mobile station having means for storing a first parameter, relating to another station, for setting up a real data communication channel having a reserved physical path between said mobile station and said another station; and
- said another station comprising a fixed station having means, wherein a second parameter relating to the mobile station for setting up said real data communication channel is capable of being stored, for forming a virtual data communication channel between the mobile station and the fixed station, said virtual data communication channel being a non-physical registration relationship using said first and second parameters and lacking a reserved path between said mobile station and said fixed station preparatory to the establishment of said real data communication channel, whereby the establishment of a real data communication channel is expedited when data is to be communicated between said mobile and fixed stations.
- 2. A system according to claim 1, further comprising means for communicating a first parameter relating to said mobile station to be stored in the fixed station parameter storing means to form the virtual data communication channel when a mobile station having data communication capability registers with the fixed station.
- 3. A system according to claim 1, further comprising means for forming the real data communication channel when a mobile station registered with the fixed station requests the setting up of a data communication channel.
- 4. A system according to claim 1, further comprising means for forming traffic channels, usually reserved for speech communication, and control channels between the mobile station and the fixed station, and wherein the real data communication channel is a traffic channel usually reserved for speech communication.
- 5. A system according to claim 1, further comprising means for forming traffic channels, usually reserved for speech communication, and control channels between the mobile station and the fixed station, and wherein the real data communication channel is a control channel.
- 6. A system according to claim 1, further comprising control means for controlling communication between the mobile station, the fixed station and an external communication network.
- 7. A system according to claim 1, further comprising means for adapting the real data communication channel for transmitting packet data.
- 8. A digital time-division cellular network having a base station and a plurality of mobile stations, wherein radio channels between the mobile stations and the base station comprise:
- a plurality of Traffic CHannels (TCH) for transferring speech and data between the mobile stations and the base station,
- a control channel in association with each of said TCH channels, said control channels comprising:
- a Random Access CHannel (RACH), for conducting signals from the mobile stations to the base station requesting a TCH channel,
- a common Paging CHannel (PCH), for conducting a paging signal from the base station to a mobile station,
- an Access Grant CHannel (AGCH), for conducting a signal from the base station to inform a mobile station of the TCH channel assigned thereto,
- and further comprising:
- a packet data service unit (Agent) for connecting the cellular network to a data network,
- means for switching a mobile station to the Agent and signalling for the setting up of a connection to the data network,
- means in a mobile station and the Agent for storing a number of parameters relating to each other, said parameters including a Radio Link Protocol (RLP) and forming a virtual channel, said virtual channel being a non-physical registration relationship using said parameters and lacking a reserved path between said mobile station and said Agent preparatory to the establishment of a packet data transfer channel,
- means, responsive to a request from a mobile station to transfer or receive data packets, for assembling a packet data transfer channel between the mobile station and the Agent, making use of the parameters of the virtual channel, and wherein said packet data transfer channel comprises a first part comprising a radio channel between said mobile station and the base station and a second part comprising a time slot in a digital trunk line between said base station and said Agent,
- means for transferring data packets over said packet data transfer channel,
- means, responsive to the termination of data packet transfer over said packet data transfer channel, for disassembling at least said radio channel, and
- means for maintaining the virtual channel until the release of a mobile station from the Agent.
- 9. A network according to claim 8, wherein the Agent comprises:
- means for registering all mobile stations connected to the Agent,
- means for informing a mobile station of any data packets addressed thereto,
- means for transferring data packets from a mobile station addressed to the data network,
- means for transferring messages to the mobile station entering the Agent from the data network,
- means for buffering data packets,
- means for performing encrypting/decrypting,
- means for performing compression/decompression of the data to and from a mobile station,
- means for updating a data base of the location of the mobile stations,
- means for receiving data packets from the data network addressed to the cellular network and transferring them to the mobile stations, and
- means for removing a mobile station from the register after it is disconnected from the Agent.
- 10. A network according to claim 8, wherein the packet data service unit (Agent) comprises means for adapting the data packets from the data network to virtual channel protocol packets, said virtual channel protocol packets being composed of one or more radio link traffic protocol (RLP) frames.
- 11. A network according to claim 10, wherein the virtual channel protocol packets comprise an identification part indicating whether the contents of a packet contain signalling data or upper layer data.
- 12. A network according to claim 8, further comprising means, in a mobile station, for initiating the transmitting of data packets by sending a request on the RACH channel for establishing a packet data transfer channel, said request being a modification of the standard channel establishing request of the cellular network.
- 13. A network according to claim 8, further comprising means in the base station, responsive to data packets to be transferred to a mobile station, for sending a message on the common PCH channel to the mobile station about said data packets to be transferred and means at the mobile station, responsive to said message for sending on the RACH channel a request to the base station for establishing a packet data transfer channel, said request being a modification of the standard channel establishing request of the cellular network.
- 14. A network according to claim 8, further comprising means, in the base station, for transmitting control channel data used in channel establishment signalling and packet data transfer channel data to the mobile stations.
- 15. A network according to claim 14, further comprising means for establishing, after the channel establishment signalling between the mobile station and the base station, said second part of the packet data transfer channel with said Agent, whereby the entire packet data transfer channel is ready for packet transfer.
- 16. A network according to claim 8, wherein said cellular network comprises a Dedicated Fast Access Channel (FACCH), and further comprising means for causing said channel establishment signalling to be carried out on a Dedicated Fast Access CHannel, FACCH of the cellular network.
- 17. A network according to claim 8, further comprising a base station controller connected to the base station and wherein the second part of the packet data transfer channel is a direct PCM connection from the base station controller to the Agent, whereby said second part of the packet data transfer channel is active irrespective of the packet data transfer.
- 18. A network according to claim 8, wherein the second part of the packet data transfer channel is a variable time slot on the PCM trunk line, and further comprising means whereby said second part is disassembled after the termination of the data packet transfer.
- 19. A network according to claim 8, wherein the first part of the packet data transfer channel is a TCH channel.
- 20. A network according to claim 8, further comprising means for causing the first part of the packet data transfer channel to be a RACH channel when packet data are transferred from the mobile station to the Agent, and to be the common PCH channel when packet data are transferred from the Agent to the mobile station.
- 21. A network according to claim 8, further comprising means for causing, in the course of a transfer of packet data, the first part of the packet data transfer channel to be any one of the TCH channel, the RACH channel, and the common PCH channel.
- 22. A network according to claim 8, wherein a broadcast paging message transmitted to all mobile stations of the cellular network and a multicast paging message transmitted to certain mobile stations of the cellular network are transmitted on the data section of the broadcast and the multicast protocols, respectively.
- 23. A method of transmitting data in a radio telephone network comprising:
- storing at a fixed station a first parameter relating to a mobile station and the setting up of a real data communication channel between the mobile station and the fixed station; and
- storing at the mobile station a second parameter relating to the fixed station and the setting up of a real data communication channel between the mobile station and the fixed station, for forming a virtual data communication channel between the mobile station and the fixed station, the virtual data communication channel being a non-physical registration relationship using the first and second parameters and lacking a reserved path between the mobile station and the fixed station preparatory to the establishment of a real data communication channel, thereby expediting establishment of a real data communication channel between the mobile station and the fixed station in response to an appropriate request.
- 24. A method according to claim 23, further comprising forming the virtual data communication channel when a mobile station having data communication capability registers with the fixed station.
- 25. A method according to claim 23, further comprising forming the virtual data communication channel when a mobile station registered with the fixed station requests the setting up of a real data communication channel.
- 26. A method according to claim 23, wherein said network comprises traffic channels usually reserved for speech communication, and control channels, and further comprising utilising a traffic channel usually reserved for speech communication for the real data communication.
- 27. A method according to claim 23, wherein said network comprises traffic channels usually reserved for speech communication, and control channels, and further comprising utilising a control channel as the real data communication channel.
- 28. A radio telephone having storage means therein to store a parameter relating to a fixed station for setting up a real data communication channel with said fixed station and for forming a virtual data communication channel with the fixed station by utilizing a parameter relating to said radio telephone stored in said fixed station, the virtual data communication channel being a non-physical registration relationship using the respective stored parameters and lacking a reserved path between the radio telephone and the fixed station preparatory to the establishment of a real data communication channel, thereby expediting establishment of a real data communication channel between said radio telephone and said fixed station in response to an appropriate request.
- 29. A radio telephone according to claim 28, further comprising means adapted to store said parameter in said storage means when said radio telephone has a data communication ability and when said radio telephone registers with the fixed station.
- 30. A radio telephone according to claim 28, further comprising means adapted to store said parameter in said storage means when said radio telephone is registered with the fixed station and requests the setting up of a data communication channel.
- 31. A radio telephone system according to claim 1 wherein said mobile station comprises a radio telephone.
- 32. A method according to claim 23 wherein said mobile station comprises a radio telephone.
Priority Claims (1)
Number |
Date |
Country |
Kind |
933894 |
Sep 1993 |
FIX |
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Parent Case Info
This is a continuation of application Ser. No. 08/301,340 filed on Sep. 6, 1994, now abandoned.
US Referenced Citations (21)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0048861 A1 |
Apr 1982 |
EPX |
0048854 A1 |
Apr 1982 |
EPX |
0 369 535 A3 |
May 1990 |
EPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
301340 |
Sep 1994 |
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