KR101423765B1 - Apparatus and method for transmitting paging information to offer multicast and broadcast service in a communication system - Google Patents

Abstract

In a communication system, when a multicast content (MBS) content to be transmitted to a mobile station in an idle mode occurs, the base station transmits a mobile paging advertisement for transitioning from the idle mode to the active mode MOB_PAG-ADV: Mobile_Paging-Advertisement) message, and transmits the generated mobile paging advertisement message to the mobile station. The mobile paging advertisement message includes a TLV (Type Length Value field.

Paging, MOB_PAG-ADV message.

Description

TECHNICAL FIELD [0001] The present invention relates to a paging information transmitting apparatus and method for providing a multicast broadcast service in a communication system,

The present invention relates to a communication system, and more particularly, to a paging information transmitting apparatus and method for providing a multicast broadcasting service in a communication system.

The next generation communication system has been developed to ensure high-speed data transmission and reception while ensuring mobility of a mobile station (MS). A typical example of the next generation communication system is IEEE (Institute of Electrical and Electronics Engineers) 802.16e communication system.

In order to guarantee the mobility of the MSs in the IEEE 802.16e communication system, power consumption of the MS is an important factor for the entire system. Accordingly, in order to minimize the power consumption of the MS, an idle mode operation between the MS and a base station (BS) and an active mode corresponding to the idle mode operation Mode operation is proposed.

In the communication system, when there is no data to be transmitted / received between the BSs, the MS transitions from an active mode to an idle mode. If there is data to be transmitted to the MS in the idle mode, the BS transmits a paging message, for example, Mobile_Paging-Advertisement (MOB_PAG-ADV) Message to the MS. The MOB_PAG-ADV message is a message broadcasted to all MSs capable of communicating with the BS. Upon receipt of the MOB_PAG-ADV message, the MS checks the parameters included in the MOB_PAG-ADV message, and when the MS itself is included, transitions from the idle mode to the active mode.

Hereinafter, the MOB_PAG-ADV message format in a general IEEE 802.16e communication system will be described with reference to Table 1.

In Table 1, the MOB_PAG-ADV message includes a paging group list in which a BS provides a service, a media access control (MAC) control message of the MS to transition to an active mode in an idle mode, Address hash field is included. The MAC address hash field value is obtained by calculating 24 bits of CRC (Cyclic Redundancy Check) from the MAC address of the MS.

The MOB_PAG-ADV message includes two bits of an action code. The MS receives the MOB_PAG-ADV message, checks whether the MS itself belongs to the paging group, and confirms the MAC address hash field. Then, an action corresponding to an action code included in the MOB_PAG-ADV message is performed.

As described above, in the IEEE 802.16e communication system, the MS receives the MOB_PAG-ADV message from the BS and confirms that it is included in the paging group list included in the MOB_PAG-ADV message. Next, the MAC address hash field included in the MOB_PAG-ADV message is checked.

That is, the MOB_PAG-ADV message includes a list of MSs that must transition from an idle mode to an active mode, and a hash field of each of the MSs. At this time, as the number of MSs increases, the value of the MAC address hash field increases. As a result, the size of the MOB_PAG-ADV message increases.

In addition, in the IEEE 802.16e communication system, when a multicast and broadcast service is provided, a plurality of MSs are provided with the same content service, and a plurality of MSs receiving the same content service are simultaneously A method for paging has not been proposed.

The present invention proposes an apparatus and method for transmitting paging information for providing a multicast broadcast service in a communication system.

An apparatus according to an embodiment of the present invention is a base station that transmits paging information in a communication system. When a multicast and broadcast service (MBS) content to be transmitted to a mobile station in an idle mode is generated, A control unit for generating a Mobile_Paging-Advertisement (MOB_PAG-ADV) message for transition from an idle mode to an active mode; and a transmitter for transmitting the generated mobile paging advertisement message to the mobile station, Message includes a Type Length Value (TLV) field that the mobile station must confirm in order to receive the MBS content.

A method according to an embodiment of the present invention is a method for a base station to transmit paging information in a communication system. When multicast and broadcast service (MBS) content to be transmitted to a mobile station in an idle mode is generated, Generating a Mobile_Paging-Advertisement (MOB_PAG-ADV) message for transition from the idle mode to the active mode, and transmitting the generated mobile paging advertisement message to the mobile station, The paging advertisement message includes a Type Length Value (TLV) field that the mobile station must confirm in order to receive the MBS content.

As described above, the present invention proposes a TLV format including information for receiving a multicast broadcast service (MBS) in an MOB_PAG-ADV message broadcasted from a base station (BS) to a mobile station (MS) There is an advantage that specific MSs receiving broadcast services can receive the MBS contents automatically by checking the TLV format.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The present invention proposes a system and method for transmitting paging information in a communication system. In particular, the present invention relates to a method and apparatus for providing a plurality of mobile stations (MSs) to receive MBS contents in a communication system providing a Multicast and Broadcast Service (MBS) (Hereinafter referred to as " MS ").

The TLV (Type Length Value) format included in the MOB_PAG-ADV message in the communication system according to the embodiment of the present invention will now be described with reference to Table 2 below.

Table 2 shows a mobile paging-advertisement (MOB_PAG-ADV) message broadcast by a base station (BS) to an MS in a communication system. Is a new TLV field defined in the message. Each field includes a 12 LSBs (Least Significant Bits) field of a Multicast Connection Identifier (MCID) field, a Logical Channel IDentifier pair An Offset Indicator field, an Offset Value field, and a logical channel identifier field corresponding to the number of logical channel identifiers paired with the MCID.

Here, the offset value may represent the 12 LSBs field of the MCID or the MBS contents provision time information indicated by the 12 LSBs field and the logical channel identifier field of the MCID as a frame offset or a timing offset.

The frame offset is represented by a 12-bit LSB frame number in which the MBS contents are provided, and the timing offset is a time from when the TLV is delivered through the MOB_PAG-ADV message to when the MBS contents are provided Is expressed in units of a predetermined time, for example, 10 seconds.

Next, a new TLV configuration defined in the MOB_PAG-ADV message in the communication system according to the embodiment of the present invention will be described with reference to FIG.

1 is a diagram illustrating a new TLV format defined in an MOB_PAG-ADV message in a communication system according to an embodiment of the present invention.

Referring to FIG. 1, the TLV format includes a Type field 101, a Length field 103, and a Value field 105. The value field 105 includes an MCID field 111, a logical channel identifier number field 113 paired with the previous MCID field, an offset indicator field 115 and an offset value field 115 117, and a logical channel identifier (ID) field 119 are included.

The type field 101 has a size of 8 bits. The length field 103 has a variable value corresponding to the number of MCIDs and the number of logical channel identifiers. The value field 105 has a size of 24 bits. In addition, the MCID field 111 includes identifiers of MSs receiving MBS contents. Bit numbers # 0 to # 11, i.e., MCID is represented by 12 LSBs, and a logical channel identifier number field 113 Includes the number of logical channel identifiers paired with the previous MCID, and is expressed in bit numbers # 12 to # 15 (113). Also, the offset indicator field 115 is represented by bit number # 16 115, the frame offset is represented by '0', and the timing offset is indicated by '1'. The offset value field 117 is expressed in bit numbers # 17 to # 23. If the bit number # 16 is '0', the frame number in which the MBS contents are provided is displayed. If the bit number # The time until the content is provided is displayed. Also, the logical channel identifier field 119 is generated corresponding to the number of logical channel identifiers included in the bit numbers # 12 to # 15. If the number of logical channel identifiers is three, three logical channel identifier fields 119 are also generated.

All MSs receiving MBS content from the MS receiving the MOB_PAG-ADV message should check the TLV format. Also, the MS included in the MAC address hash field should also check the TLV format. That is, the MS receiving the MOB_PAG-ADV message in which the MAC address hash value is expressed as 0X000000 or 0XFFFFFF, for example, should check the TLV format.

Next, a new TLV configuration defined in the MOB_PAG-ADV message in the communication system according to another embodiment of the present invention will be described with reference to FIG.

2 is a diagram illustrating a new TLV format defined in an MOB_PAG-ADV message in a communication system according to another embodiment of the present invention.

Referring to FIG. 2, the TLV format includes a type field 201, a length field 203, and a value field 205. The value field includes a multicast broadcast service group identifier (MBS Group ID) field 211, an offset indicator field 213, and an offset value field 215.

The type field 201 has a size of 8 bits. The length field 203 has a variable value corresponding to the MBS Group ID. The value field 205 has a size of 24 bits. Also, the MBS Group ID field 211 includes a group identifier for the MBS managed by the network, and is expressed in bit numbers # 0 to # 15. Also, the offset indicator field 213 is represented by bit number # 16, the frame offset is indicated by '0', and the timing offset is indicated by '1'. If the bit number # 16 is '0', the frame number in which the MBS contents are provided is displayed. If the bit number # 16 is '1', the MBS contents are displayed in the offset value field 215. The time until the content is provided is displayed.

1 is a diagram illustrating a new TLV format defined in an MOB_PAG-ADV message in a communication system according to an embodiment of the present invention;

2 is a diagram illustrating a new TLV format defined in a MOB_PAG-ADV message in a communication system according to another embodiment of the present invention.

Claims (26)

A method for a base station to transmit paging information in a communication system, When a Multicast and Broadcast Service (MBS) content to be transmitted to an idle mode mobile station occurs, a Mobile_Paging-Advertisement (MOB_PAG-ADV) message for the mobile station to transition from the idle mode to the active mode , And transmitting the generated mobile paging advertisement message to the mobile station, Wherein the mobile paging advertisement message includes a TLV (Type Length Value) field including time information on which the MBS contents are provided. 2. The method of claim 1, A Multicast Connection Identifier (MCID) field, a logical channel identifier number field, and an offset field. 3. The method of claim 2, Wherein the MCID field includes an identifier of a mobile station, the logical channel identifier number field includes a number of logical channel identifiers corresponding to a previous MCID, the offset field includes a frame number indicating time information on which the MBS content is provided, The method comprising the steps of: 4. The method of claim 3, An offset indicator field, and an offset value field. 5. The method of claim 4, wherein the offset indicator field comprises: A frame offset, and a timing offset. 6. The method of claim 5, And the MBS data is represented by a frame number to which the MBS data is provided. 6. The method of claim 5, Wherein the MBMS data is expressed as a time until MBS data is provided. 2. The method of claim 1, An MBS group identifier field, and an offset field. 9. The method of claim 8, Wherein the MBS group identifier field includes a group identifier for an MBS managed in a network, and the offset field includes one of a frame number and time information indicating time information on which the MBS contents are provided. Way. 10. The method of claim 9, An offset indicator field, and an offset value field. 11. The method of claim 10, wherein the offset indicator field comprises: A frame offset, and a timing offset. 12. The method of claim 11, And the MBS data is represented by a frame number to which the MBS data is provided. 12. The method of claim 11, Wherein the MBMS data is expressed as a time until MBS data is provided. A base station for transmitting paging information in a communication system, When a Multicast and Broadcast Service (MBS) content to be transmitted to an idle mode mobile station occurs, a Mobile_Paging-Advertisement (MOB_PAG-ADV) message for the mobile station to transition from the idle mode to the active mode And a control unit And a transmitter for transmitting the generated mobile paging advertisement message to the mobile station, Wherein the mobile phasing advertisement message includes a Type Length Value (TLV) field including time information on which the MBS content is provided. 15. The method of claim 14, A Multicast Connection Identifier (MCID) field, a logical channel identifier number field, and an offset field. 16. The method of claim 15, Wherein the MCID field includes an identifier of a mobile station, the logical channel identifier number field includes a number of logical channel identifiers corresponding to a previous MCID, the offset field includes a frame number indicating time information on which the MBS content is provided, Wherein the base station comprises one of the base station and the base station. 17. The method of claim 16, An offset indicator field, and an offset value field. 18. The method of claim 17, wherein the offset indicator field comprises: A frame offset and a timing offset. 19. The method of claim 18, Wherein the MBS data is represented by a frame number to which the MBS data is provided. 19. The method of claim 18, Wherein the MBS data is expressed as a time until the MBS data is provided. 15. The method of claim 14, An MBS group identifier field, and an offset field. 16. The method of claim 15, Wherein the MBS group identifier field includes a group identifier for an MBS managed in a network, and the offset field includes one of a frame number and time information indicating time information on which the MBS contents are provided. 23. The method of claim 22, An offset indicator field, and an offset value field. 24. The method of claim 23, wherein the offset indicator field comprises: A frame offset and a timing offset. 25. The method of claim 24, Wherein the MBS data is represented by a frame number to which the MBS data is provided. 25. The method of claim 24, Wherein the MBS data is expressed as a time until the MBS data is provided.

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