Mobile station capable of being corresponding to broadcast communication or multicast communication
A technology of multicast communication and broadcast communication, which is applied in the field of mobile stations and can solve the problems of no control information and inability to set dedicated channels, etc.
Active Publication Date: 2010-02-03
NTT DOCOMO INC
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Problems solved by technology
[0013] However, in broadcast communication or multicast communication in a conventional mobile communication system, since a mobile station UE in an idle mode cannot set a dedicated channel (DCCH (Dedicated Common Control Channel) or DTCH (Dedicated Transport Channel) etc.), There is a problem that the radio control apparatus RNC does not have means capable of identifying which type of control information is broadcast communication or multicast communication, which is transmitted from the mobile station UE via a common channel.
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[0026] (Structure of mobile station according to one embodiment of the present invention)
[0027] Figure 5 An overall configuration diagram showing a mobile communication system according to an embodiment of the present invention. The mobile communication system of this embodiment, such as Figure 5 As shown, there are two base stations BTS1 and BTS2 under the control of the radio control device RNC. In addition, it is assumed that the mobile station UE is in the idle mode and is communicating with the base station BTS1.
[0028] Image 6 A functional block diagram of the mobile station UE according to the present embodiment is shown. The mobile station UE is a mobile station that can handle broadcast communication or multicast communication, such as Image 6 As shown, it includes a method management unit 11 , a channel control unit 12 , a control information generation unit 14 , a MAC header addition unit 15 , a channel type insertion unit 16 , and a control informatio...
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A mobile station capable of transmitting control information, which is related to broadcast or multicast communication, to a radio control apparatus without establishing any separate channel in the broadcast or multicast communication. The mobile station comprises a control information generating part (14) for generating control information related to broadcast or multicast communication; a control information identifier adding part (15, 16, 17) for adding, to the control information, a control information identifier for identifying the type of the control information; and a transmitting part(12) for transmitting the control information to a radio control apparatus (RNC) via a common channel.
Description
technical field [0001] The present invention relates to a mobile station capable of broadcast communication or multicast communication. Background technique [0002] In existing mobile communication systems, such as figure 1 As shown, broadcast communication in which one or more base stations BS simultaneously transmit the same information to an unspecified plurality of mobile stations UE (User Equipment) within a predetermined area is known (for example, refer to Non-Patent Document 1). [0003] Furthermore, in existing mobile communication systems, such as figure 2 As shown, multicast (Multicast) communication in which the same information is transmitted to a plurality of mobile stations UE belonging to a specific group is known (for example, refer to Non-Patent Document 2). [0004] Additionally, if image 3 As shown, there are two states (modes) of the mobile station UE used in the conventional mobile communication system: "Idle (idle) mode" and "Connected (connected...
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IPC IPC(8): H04B7/26H04L12/70H04W4/06H04W28/06H04W88/02
CPCH04W88/02H04W4/06H04W74/002
Inventor 文盛郁石井美波中村武宏
Owner NTT DOCOMO INC