TRANSMISSION AND RECEPTION OF BROADCAST SYSTEM INFORMATION IN A MOBILE COMUNICATION SYSTEM

• US 20090221293A1
• Filed: 10/20/2006
• Published: 09/03/2009
• Est. Priority Date: 12/13/2005
• Status: Active Grant

• Current Assignee: Optis Wireless Technology, LLC (Brevet Capital)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Petrovic, Dragan, Suzuki, Hidetoshi, Aoyama, Takahisa
• Granted Patent: US 8,412,211 B2
• Time in Patent Office: Days
• US Class Current: 455/450
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

The present invention relates to a method and transmission apparatus for transmitting broadcast system information in a mobile communication system. Further, the invention relates to a method and mobile terminal receiving the broadcast system information. To provide an improved method for broadcasting broadcast system information the invention suggests mapping different partitions of broadcast system information to a shared transport channel or a broadcast transport channel for transmission. The mapping may take into account parameters inherent to the mobile terminals to which the broadcast system information is to be transmitted and/or parameters inherent to the different partitions of broadcast system information.

Claims

1-24. -24. (canceled)

25. A method for transmitting broadcast system information in a radio access network, the method comprising the steps of:

mapping first system information including a master information block of a broadcast control logical channel to a broadcast transport channel,

mapping second system information of a broadcast control logical channel to a shared transport channel,

transmitting the first system information via the broadcast transport channel, and

transmitting the second system information via the shared transport channel.

26. A method for transmitting broadcast system information in a radio access network of a mobile communication system, the method comprising the following steps performed by a transmission apparatus:

mapping system information blocks of a broadcast control logical channel to a shared transport channel or a broadcast transport channel depending on a property of a respective system information block or the mobile terminals to receive the broadcast system information, and

transmitting the system information blocks via the shared transport channel and the broadcast transport channel, respectively.

27. The method according to claim 26 wherein the property of a system information block is at least one of the temporal variability of the information contained in the system information block, the size of the system information block, the necessity of the information comprised in the system information block for system access, and the necessity of the information comprised in the system information block for tracking user location within the mobile communication system.

28. The method according to claim 26, wherein the property of the mobile terminals is at least one of the capability to support an optional feature within the mobile communication system.

29. The method according to claim 26, further comprising the step of transmitting a master information block of a broadcast control logical channel periodically via the broadcast transport channel, wherein the master information block comprises control information associated to a respective one of the system information blocks, wherein the associated control information indicates whether a respective system information block is mapped to the broadcast transport channel or the shared transport channel.

30. The method according to claim 29, wherein in case a system information block is mapped to the shared transport channel, the associated control information comprises transmission format and timing of a respective system information block transmitted via the shared transport channel.

31. The method according to claim 29, wherein in case a system information block is mapped to the broadcast transport channel, the associated control information specifies at least the position of the respective system information block on the broadcast transport channel, the time interval at which the respective system information block is transmitted and a timer value- or value tag-based update mechanism to be utilized to update the information of the respective system information block.

32. The method according to claim 26, further comprising the step of transmitting control information on a control channel associated to the shared data channel, wherein the control information indicates to the transmission format and timing of a respective system information block transmitted via the shared transport channel.

33. The method according to the claim 32, wherein the control information further comprises identification of the logical channel to transport channel mapping.

34. The method according to claim 26, further comprising the step of transmitting control information via the shared transport channel, wherein the control information comprises an identification of the logical channel to transport channel mapping.

35. The method according to claim 33, wherein the identification of the logical channel to transport channel mapping is one of a plurality of configured or default identifiers.

36. The method according to claim 29, wherein the associated control information specifies at least the position of the respective system information block on the broadcast transport channel, the time interval at which the respective system information block is transmitted and a value- or value tag-based update mechanism to be utilized to update the information of the respective system information block.

37. The method according to claim 26, wherein the broadcast system information comprises information on the configuration of at least one shared transport channel of a neighboring radio cell.

38. A method for receiving broadcast system information in a radio access network, the method comprising the steps of:

receiving a first system information including a master information block of a broadcast control logical channel via a broadcast transport channel,

obtaining control information from the master information block,

receiving a second system information block via a shared transport channel at the time indicated by the control information.

39. A method for receiving broadcast system information in a radio access network of a mobile communication system, the method comprising the following steps performed by a mobile terminal:

receiving a master information block of a broadcast control logical channel via a broadcast transport channel, wherein the master information block comprises control information associated to a respective one of a plurality of system information blocks used to convey the broadcast system information, wherein the associated control information indicates whether a respective system information block is mapped to the broadcast transport channel or a shared transport channel, and

receiving system information blocks of a broadcast control logical channel on a shared transport channel and a broadcast transport channel according to the indication in the master information block.

40. The method according to claim 39, wherein in case a system information block is to be received via the shared transport channel, the associated control information in the master information block comprises a configuration of the shared transport channel to which the system information block is mapped, and

the method further comprises the step of identifying the shared transport channel on which the system information block is mapped among a plurality of shared transport channels based on the indication in the associated control information of the master information block to receive the system information block via the identified shared channel.

41. The method according to claim 39, further comprising the step of receiving control information on a control channel associated to the shared data channel, wherein the control information indicates the transmission format and timing of a respective system information block transmitted via the shared transport channel,

wherein the mobile terminal utilizes the indicated transmission format and timing for receiving the respective system information block on the shared transport channel.

42. The method according to claim 39, wherein the broadcast system information received by the mobile terminal comprises information on the configuration of at least one shared transport channel of a neighboring radio cell and

the method further comprises the step of utilizing the information on the configuration of at least one shared transport channel of a neighboring radio cell for receiving broadcast system information in the neighboring radio cell, in case the mobile terminal is handed over to the neighboring radio cell.

43. A transmission apparatus in a radio access network for transmitting broadcast system information in the radio access network, the method comprising:

a mapping means for mapping first system information including a master information block of a broadcast control logical channel to a broadcast transport channel and for mapping second system information of a broadcast control logical channel to a shared transport channel, and

a transmitter for transmitting the transmitting the first system information via the broadcast transport channel and for transmitting the second system information via the shared transport channel.

44. A transmission apparatus in a radio access network for transmitting broadcast system information in the radio access network of a mobile communication system, the apparatus comprising:

a processor for mapping system information blocks of a broadcast control logical channel to a shared transport channel and a broadcast transport channel depending on a property of a respective system information block or the mobile terminals to receive the broadcast system information, and

a transmitter for transmitting the system information blocks via the shared transport channel and the broadcast transport channel, respectively.

45. A receiving apparatus in a radio access network for receiving broadcast system information in the radio access network, the method comprising:

a receiver for receiving a first system information including a master information block of a broadcast control logical channel via a broadcast transport channel, and

an obtaining means for obtaining control information from the master information block,

wherein the receiver receives a second system information block via a shared transport channel at the time indicated by the control information.

46. A mobile terminal for receiving broadcast system information in a radio access network of a mobile communication system, the mobile terminal comprising:

a receiver for receiving a master information block of a broadcast control logical channel via a broadcast transport channel,

a processor for obtaining control information from the master information block, the control information being associated to a respective one of a plurality of system information blocks used to convey the broadcast system information, wherein the associated control information indicates whether a respective system information block is mapped to the broadcast transport channel or a shared transport channel, and

wherein the receiver is further adapted to receive system information blocks of a broadcast control logical channel on a shared transport channel and a broadcast transport channel according to the indication in the master information block.

47. A computer-readable medium storing instructions that, when executed by a processor of a transmission apparatus, causes the transmission apparatus to transmit broadcast system information in a radio access network of a mobile communication system, by:

mapping first system information including a master information block of a broadcast control logical channel to a broadcast transport channel,

mapping second system information of a broadcast control logical channel to a shared transport channel,

transmitting the first system information via the broadcast transport channel, and

transmitting the second system information via the shared transport channel.

48. A computer-readable medium storing instructions that, when executed by a processor of a transmission apparatus, causes the transmission apparatus to transmit broadcast system information in a radio access network of a mobile communication system, by:

mapping system information blocks of a broadcast control logical channel to a shared transport channel or a broadcast transport channel depending on a property of a respective system information block or the mobile terminals to receive the broadcast system information, and

transmitting the system information blocks via the shared transport channel and the broadcast transport channel, respectively.

49. A computer-readable medium storing instructions that, when executed by a processor of a receiving apparatus, causes the receiving apparatus to receive broadcast system information in a radio access network of a mobile communication system, by:

receiving a first system information including a master information block of a broadcast control logical channel via a broadcast channel,

obtaining control information from the master information block,

receiving a second system information block via a shared transport channel at the time indicated by the control information.

50. A computer-readable medium storing instructions that, when executed by a processor of a mobile terminal, causes the mobile terminal to receive broadcast system information in a radio access network of a mobile communication system, by:

receiving a master information block of a broadcast control logical channel via a broadcast transport channel, wherein the master information block comprises control information associated to a respective one of a plurality of system information blocks used to convey the broadcast system information, wherein the associated control information indicates whether a respective system information block is mapped to the broadcast transport channel or a shared transport channel, and

receiving system information blocks of a broadcast control logical channel on a shared transport channel or a broadcast transport channel according to the indication in the master information block.