Method of Transmitting MBMS Data in an E-UTRAN-System

• US 20100232340A1
• Filed: 12/18/2007
• Published: 09/16/2010
• Est. Priority Date: 10/25/2007
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Racz, Andras, Godor, Istvan, Kovacs, Akos
• Granted Patent: US 9,866,919 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04H 20/57 for mobile receivers
• CPC Class Codes: H04H 20/67 Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 67/61 taking into account QoS or priority requirements
• CPC Class Codes: H04N 21/234327 by decomposing into layers, e.g. base layer and one or more enhancement layers
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/631 Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

In an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system Multimedia Broadcast Multicast Service (MBMS) data is transmitted as layered data together with control information comprising information enabling a User Equipment to reconstruct the layered MBMS data.

Claims

1-49. -49. (canceled)

50. An Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system transmitting Multimedia Broadcast Multicast Service (MBMS) data, comprising a base station for transmitting the MBMS data as layered data comprising a lower layer and a number of higher enhancements layers, and including signaling circuitry for transmitting control information comprising signaling that binds together the transmission of the different layers belonging to the same MBMS service enabling a User Equipment (UE) to reconstruct the layered MBMS data.

51. The system according to claim 50, further comprising an entity for indicating to which layer data transmitted belongs.

52. The system according to claim 51, wherein the entity for indicating to which layer data transmitted belongs is configured to transmit the indication on the MBMS point-to-multipoint Control Channel (MCCH).

53. The system according to claim 51, wherein the entity for indicating to which layer data transmitted belongs is configured to transmit the indication via L1/L2 control signaling.

54. The system according to claim 51, wherein the entity for indicating to which layer data transmitted belongs is configured to transmit the indication in a Media Access Control (MAC) header.

55. The system according to claim 50, wherein the UE is configured to transmit feedback information relating to the channel quality.

56. The system according to claim 55, wherein the system is adapted to select transport format based on information relating to the channel quality received from the UE.

57. The system according to claim 56, wherein the system is adapted to use regular handover measurement reports as input information when selecting transport format.

58. The system according to claim 50, wherein the system is configured to employ different transport formats or transmit powers, for transmitting the different layers of the MBMS data.

59. The system according to claim 58, wherein the system is adapted to transmit the higher media layers with lower power than lower media layers.

60. The system according to claim 50, wherein, when the system is configured in a Multi Broadcast Single Frequency Network (MBSFN), transmission mode, the system is configured to transmit a base layer or lower layers of the MBMS data in MBSFN mode in a given MBSFN area.

61. The system according to claim 60, wherein the system is configured to transmit higher layer media components in single cell Point to Multipoint (PTM) mode with or without feedback.

62. The system according to claim 61, wherein the system is configured to transmit higher layer media components in single cell Point to Multipoint (PTM) mode based on any one or more of the traffic load in a given base station, UE feedback information, or the interference caused to neighbor cells.

63. The system according to claim 61, wherein the system is configured coordinate the PTM allocations in neighbor cells in order to avoid excessive interference either via base station to base station negotiation or via coordination from a central MBMS Control entity (MCE).

64. A method of transmitting Multimedia Broadcast Multicast Service (MBMS) data Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system, said method comprising the steps of:

transmitting the data as layered data comprising a lower layer and a number of higher enhancements layers; and

signaling control information, comprising signaling that binds together the transmission of the different layers belonging to the same MBMS service, from the system enabling a User Equipment (UE) to reconstruct the layered MBMS data.

65. The method according to claim 64, further comprising transmitting data indicating to which layer layered data belongs.

66. The method according to claim 65, further comprising transmitting the data indicating to which layer layered data belongs on the MBMS point-to-multipoint Control Channel (MCCH).

67. The method according to claim 65, further comprising transmitting the data indicating to which layer layered data belongs is transmitted via LI/L2 control signaling.

68. The method according to claim 65, further comprising transmitting the data indicating to which layer layered data belongs in a Media Access Control (MAC) header.

69. The method according to claim 64, further comprising receiving feedback information relating to the channel quality from the UE.

70. The method according to claim 69, further comprising selecting a transport format based on the feedback information from the UE.

71. The method according to claim 70, further comprising using regular handover measurement reports as input information when selecting transport format.

72. The method according to claim 64, wherein different transport formats or transmit powers are used for transmission of different layers of the MBMS data.

73. The method according to claim 72, wherein higher media layers are transmitted with lower power than lower media layers.

74. The method according to claim 64, wherein, when the system is configured in a Multi Broadcast Single Frequency Network (MBSFN), transmitting a base layer or lower layers of the MBMS data in MBSFN mode in a given MBSFN area.

75. The method according to claim 74, wherein higher layer media components are transmitted in single cell Point to Multipoint (PTM) mode with or without feedback.

76. The method according to claim 75, wherein higher layer media components are transmitted in single cell Point to Multipoint (PTM) mode based on at least one of a current traffic load for a base station, UE feedback information, or the interference caused to neighbor cells.

77. The method according to claim 75, wherein the PTM allocations in neighbor cells is coordinated via base station to base station negotiation or via coordination from a central MBMS Control entity (MCE) in order to avoid excessive interference.

78. A base station for use in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system transmitting Multimedia Broadcast Multicast Service (MBMS) data, said base station comprising:

a transmitter for transmitting the MBMS data as layered data comprising a lower layer and a number of higher enhancements layers; and

signaling circuitry associated with the transmitter, for transmitting control information comprising signaling that binds together the transmission of the different layers belonging to the same MBMS service enabling a User Equipment to reconstruct the layered MBMS data.

79. The base station according to claim 78, further comprising an entity for indicating to which layer data transmitted belongs.

80. The base station according to claim 79, wherein the entity for indicating to which layer layered data belongs is configured to transmit the indication on the MBMS point-to-multipoint Control Channel (MCCH).

81. The base station according to claim 79, wherein the entity for indicating to which layer layered data belongs is configured to transmit the indication via L1/L2 control signaling.

82. The base station according to claim 79, wherein the entity for indicating to which layer layered data belongs is configured to transmit the indication in a Media Access Control (MAC) header.

83. The base station according to claim 78, wherein the base station is configured to receive feedback information relating to the channel quality from a UE in the E-UTRAN system.

84. The base station according to claim 83, wherein the base station is adapted to select a transport format based on information relating to the channel quality received from the UE.

85. The base station according to claim 84, wherein the base station is adapted to use regular handover measurement reports as input information when selecting transport format.

86. The base station according to claim 78, wherein the base station is configured to employ different transport formats or transmit powers, for transmitting the different layers of the MBMS data.

87. The base station according to claim 86, wherein the base station is adapted to transmit the higher media layers with lower power than lower media layers.

88. The base station according to claim 78, wherein, when the system is configured in a Multi Broadcast Single Frequency Network (MBSFN) transmission mode, the base station is configured to transmit a base layer or lower layers of the MBMS data in MBSFN mode in a given MBSFN area.

89. The base station according to claim 88, wherein the base station is configured to transmit higher layer media components in single cell Point to Multipoint (PTM) mode with or without feedback.

90. The base station according to claim 89, wherein the base station is configured to transmit higher layer media components in single cell Point to Multipoint (PTM) mode based on one or more of the traffic load in a given base station, UE feedback information, or the interference caused to neighbor cells.

91. The base station according to claim 89, wherein the base station is configured coordinate the PTM allocations in neighbor cells in order to avoid excessive interference either via base station to base station negotiation or via coordination from a central MBMS Control (MCE) entity.

92. A User Equipment (UE) for use in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system transmitting Multimedia Broadcast Multicast Service (MBMS) data, said UE comprising:

a receiver for receiving the MBMS data as layered data a lower layer and a number of higher enhancements layers; and

processing circuitry for receiving control information via said receiver, said control information comprising signaling that binds together the transmission of the different layers belonging to the same MBMS service, thereby enabling the UE to reconstruct the layered MBMS data.

93. The UE according to claim 92, wherein the UE is configured to receive an indication on a MBMS point-to-multipoint Control Channel (MCCH), indicating to which layer layered data belongs.

94. The UE according to claim 92, wherein the UE is configured to receive an indication via L1/L2 control signaling, indicating to which layer layered data belongs.

95. The UE according to claim 92, wherein the UE is configured to receive an indication in a Media Access Control (MAC) header, indicating to which layer layered data belongs.

96. The UE according of claim 92, wherein the UE includes a transmitter and is configured to transmit, via said transmitter, feedback information relating to the channel quality.

97. The UE according to claim 92, wherein, when the system is configured in a Multi Broadcast Single Frequency Network (MBSFN), transmission mode, the UE is configured to receive a base layer or lower layers of the MBMS data in MBSFN mode in a given MBSFN area.

98. The UE according to claim 97, wherein the UE is configured to receive higher layer media components in single cell Point to Multipoint (PTM) mode with or without feedback.