WO2010078808A1

WO2010078808A1 - Method and system for updating mbms control signaling based on base station

Info

Publication number: WO2010078808A1
Application number: PCT/CN2009/076080
Authority: WO
Inventors: 苟伟; 毕峰; 吴栓栓
Original assignee: 中兴通讯股份有限公司
Priority date: 2008-12-29
Filing date: 2009-12-25
Publication date: 2010-07-15
Also published as: CN101771946B; CN101771946A

Abstract

A method for updating the Multimedia Broadcast Multicast Service (MBMS) control signaling based on the base station is provided, which is used for solving the technical problem of the terminal power loss due to repeated reception of the control signaling in the terminal. According to the invention, the related base station sending MBMS judges whether the control signaling of MBMS is updated and generates the corresponding updating indication signaling, then the base station sends the control signaling of MBMS and the corresponding updating indication signaling are sent to the terminal. According to the technical solution of the invention, the base station can inform, according to the updating situation of the control signaling, the terminal in time through the updating indication signaling. The terminal does not have to repeatedly receive the control signaling which is not updated, thereby saving the power of the terminal.

Description

Base station-based MBMS control signaling update method and system

The present invention relates to an LTE (Long Term Evolution) system, and in particular, to a base station-based multimedia broadcast multicast service (MBMS) control signaling update method. Background technique

With the rapid development of the Internet and the popularity of large-screen multi-function mobile phones, there have been a large number of mobile data multimedia services and various high-bandwidth multimedia services, such as video conferencing, television broadcasting, video on demand, advertising, online education, interactive games, etc. These services on the one hand meet the rising business needs of mobile users, and on the other hand bring new business growth points for mobile operators. These mobile data multimedia services require multiple users to receive the same data at the same time. Compared with general data services, they have the characteristics of large data volume, long duration, and delay sensitivity.

In order to effectively utilize mobile network resources, the 3rd Generation Partnership Project (3GPP) proposed MBMS, which is a technology that transmits data from one data source to multiple targets, and implements the network (including the core). Network and access network) Sharing of resources increases the utilization of network resources (especially air interface resources). The 3GPP-defined MBMS not only enables plain text low-rate message-like multicast and broadcast, but also enables high-speed multimedia services to broadcast and multicast, providing a variety of rich video, audio and multimedia services, which undoubtedly conforms to future mobile The trend of data development provides a better business prospect for the development of 3G.

In LTE, MBMS is determined to be semi-static according to the characteristics of MBMS. The reason is mainly because the amount of MBMS is basically fixed. Secondly, the location and size of resources allocated to MBMS remain basically unchanged, and the MBMS area remains basically unchanged. The number of MBMS in the area is basically unchanged, and MBMS is on the Broadcast Control Channel (BCCH). The scheduling information changes slowly, and the MBMS control signaling update is slower. These are all determined by the characteristics of MBMS itself.

To receive the MBMS data of interest to the terminal, the terminal must receive a series of control signals to know the resource location of the MBMS data. The change of these control signaling is slow, that is, the data packet sent this time and the data sent last time use the same control signaling, so that the control signaling may not be updated for a long time, such as the terminal If you go to receive control signaling, you will definitely waste the power of the terminal. Summary of the invention

In view of this, one of the main purposes of the present invention is to provide a method for updating an MBMS control signaling based on a base station, which is used to solve a problem of how to reasonably select a node that determines whether an MBMS control signaling is updated, how to notify a terminal, and reduce terminal repetition. Technical problem of receiving the same MBMS control signaling.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A method for updating an MBMS control signaling based on a base station, the implementation steps are as follows: determining, by a base station that sends a multimedia broadcast multicast service (MBMS), whether the control signaling of the MBMS is updated and generating corresponding update indication signaling, where the base station Transmitting the control signaling of the MBMS and the corresponding update indication signaling to the terminal.

Further, for the single cell mode MBMS, before the base station determines whether the control signaling of the MBMS is updated, the MBMS control signaling is configured by the base station that transmits the MBMS.

Further, for the multi-cell mode MBMS, the multi-cell broadcast multicast coordination entity (MCE) is in the multimedia broadcast multicast single frequency network (MBSFN) area before the base station determines whether the MBMS control signaling is updated. The MBMS configuration control signaling in the multi-cell mode transmits the control signaling of the MBMS to the base station participating in the MBMS.

Further, the terminal first receives the update indication signaling, and according to the received The new indication signaling determines whether the control signaling of the MBMS is updated, and if the update does not occur, uses the previously received control signaling of the MBMS that has been stored locally; if an update occurs, receives the new MBMS. Control signaling and stored locally.

Further, the control signaling of the MBMS includes at least a time-frequency resource, a modulation and an encoding mode used by the base station to transmit each MBMS data packet.

Further, in the single cell mode MBMS, the MBMS control signaling further includes a primary multicast mode primary multicast control channel (P-MCCH) and/or a single cell mode secondary multicast control channel (S- Signaling contained in MCCH).

Another object of the present invention is to provide a system for updating MBMS control signaling based on a base station. To achieve the above object, the technical solution of the present invention is implemented as follows:

A system for updating a base station based MBMS control signaling, comprising:

a base station, configured to determine whether the control signaling of the MBMS is updated, and generate corresponding update indication signaling; and send the control signaling of the MBMS and the corresponding update indication signaling to the terminal; and the terminal is configured to receive the MBMS The update of the control signaling indicates signaling, and the control signaling of the MBMS is received or not received according to the update indication signaling decision.

Further, for the single cell mode MBMS, the base station is further configured to configure the control signaling of the MBMS, and before the sending the control signaling of the MBMS, the base station further determines whether the current MBMS control signaling occurs. Update, and form the corresponding update indication signaling.

Further, for the multi-cell mode MBMS, the system further includes:

An MCE for configuring control signaling for MBMS in a multi-cell mode in an MBSFN area; the MCE is further configured to send the MBMS control signaling to a base station participating in the MBMS;

The base station participating in the MBMS in the MBSFN area is further configured to determine whether the control signaling of the MBMS is updated, and generate corresponding update indication signaling.

Further, the control signaling of the MBMS includes at least each MBMS sent by each base station. Time-frequency resources, modulation and coding methods used in data packets.

With the technical solution of the present invention, the base station can notify the terminal in time by updating the indication signaling according to the update condition of the control signaling, although for each MBMS, the base station needs to send the control signaling to the terminal regardless of whether the control signaling is updated or not. And updating the indication signaling, but the update indication signaling is first delivered to the terminal, and for the terminal that has established the link to receive the MBMS data, when it is determined that the control signaling has not changed, it is unnecessary to receive the control that has not been updated. Signaling, thus saving power to the terminal. DRAWINGS

1 is a flowchart of multi-cell mode MBMS control signaling and update indication signaling according to the present invention; FIG. 2A is a network architecture for implementing MBMS control signaling transmission separated from an MCE and a base station according to the system according to the present invention;

2B is a network architecture of an MBMS control signaling transmission in which an MCE and a base station are based on a system according to the present invention;

3 is a flow chart of control signaling and update indication signaling of MBMS in the single cell mode of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be further described in detail below with reference to the accompanying drawings.

In the existing network architecture of LTE, there are two control signaling transmission modes of the MBMS control plane, as shown in FIG. 2A and FIG. 2B respectively. In FIG. 2A, the control signaling of the core network is transmitted from the MBMS gateway to the MCE through the M3 interface. Then, the MCE is transmitted to the relevant base station through the M2 interface. In FIG. 2B, the MCE entity is located in the base station, and after the control signaling is transmitted from the MBMS gateway to the MCE entity through the M3 interface, the MCE directly transmits the control signaling to the base station through the internal interface. Process the entity accordingly. The difference between FIG. 2A and FIG. 2B is that the interface between the MCE and the base station is made in 2B. It is an internal interface that turns the M2 interface into an internal interface, thus eliminating the need to standardize the M2 interface. The two processes have their own advantages in different application scenarios, so LTE supports two MBMS control plane processes at the same time.

Example 1:

1 is a flowchart of processing of multi-cell mode MBMS control signaling and update indication signaling according to the present invention; it is assumed that in a multimedia broadcast multicast service single frequency network (MBSFN) service area i or The base stations in zone i or all participate in the transmission of MBMS in the multi-cell mode in the area. The multi-cell mode is defined in accordance with the currently published technology, with specific reference to the definition of section 15.3.3 of the LTE protocol 36.300 v870.

Step 101: Multi-cell broadcast multicast coordination entity (Multi-cell/multicast Coordination)

Entity, MCE) uniformly configures control signaling for each data packet of the MBMS, and sends control signaling configured for the data packet of the MBMS to be transmitted to all base stations participating in the transmission of the data packet;

The control signaling of the MBMS includes at least time-frequency resource information (transmission time and transmission frequency), modulation and coding scheme (MCS), and the like used by each base station to transmit each MBMS data packet. The MCE unified configuration control signaling can ensure that the physical signals transmitted by each MBMS data packet at every moment of the antenna of each base station are completely consistent in the MBMS area, so that each base station transmits every moment. The electromagnetic wave signals carrying the same MBMS data can be naturally superimposed in the air to increase the signal power.

Step 102: After parsing the control signaling of the received MBMS data packet to be transmitted, the base station reassembles the signaling according to the format agreed by the terminal;

The base station performs the following operations on the data packets of each MBMS to be sent: the control signaling of each MBMS data packet sent by the MCE is parsed, and the control signaling that is updated is re-according to the format that the terminal can recognize. Regrouping.

Step 103: The base station determines whether the control signaling of the MBMS data packet is updated, if the occurrence occurs. Update, proceed to step 104; if no update occurs, perform step 105;

The method for the base station to determine whether the control signaling is updated is: comparing the control signaling of the previously used MBMS stored by itself with the currently received control signaling, if not, indicating that new control signaling is generated. The base station stores the new control signaling locally; if it is the same, it indicates that no new control signaling is generated, and the base station can also use the previous control signaling, and can also use the MBMS control command received this time.

Step 104: The base station generates, according to the control signaling of the data packet to be transmitted by the MBMS, a corresponding update indication signaling when the control signaling is updated, and then performs step 106;

Step 105: The base station generates, for the control signaling of the data packet to be transmitted by the MBMS, the corresponding update indication signaling when the control signaling does not occur, and then performs step 106;

In one embodiment of the present invention, a 1-bit binary bit is used to form update indication signaling. If the control signaling does not occur, the binary location is 0; if the control signaling is updated, the binary location is 1; When the control signaling does not update, the base station can continue to use the last control signaling. Otherwise, the MCE configures new control signaling for the current data packet to be sent by the MBMS, and sends new control signaling to the relevant base station.

Step 106: The base station sends the control signaling and the corresponding update indication signaling generated by the base station to the terminal.

After the base station obtains the control signaling configured by the MCE for each MBMS packet to be transmitted, the base station performs the analysis, and then performs the control signaling of each MBMS packet to be sent in the format that the terminal can recognize. Reorganize.

The base station transmits the control signaling of the MBMS data packet to be transmitted that is finally formed to the specified resource according to the specified format, and the update indication signaling corresponding to the control signaling of the MBMS data packet to be transmitted generated by the base station is The specified format is sent on the specified resources.

The feature of this embodiment is that the MCE configures control signaling for each data packet of the MBMS, and sends the configured control signaling to each relevant base station, and the base station determines the control signal to be sent. The update is performed, and the control signaling of the MBMS is formed according to the specified format, and the update indication signaling corresponding to the MBMS control signaling is generated according to the specified format, and is sent to the terminal on the specified resource.

Example 2:

FIG. 3 is a flowchart of processing of MBMS control signaling and update indication signaling in a single cell mode according to the present invention. The feature of the embodiment is that the base station configures control signaling for the MBMS, determines whether the control signaling to be sent is updated, and forms the control signaling of the MBMS according to the specified format, and forms the MBMS control signaling according to the specified format. The indication signaling is updated and sent to the terminal on the specified resources. The single cell mode is based on the currently disclosed technology, with reference to the definition of section 15.3.2 of the LTE protocol 36.300 v870.

Step 301: The base station determines whether the control signaling is configured for the MBMS for the first time; if yes, step 302 is performed; otherwise, step 303 is performed;

Step 302: The base station configures a control signal for the data packet to be transmitted by the MBMS in the single cell mode.

Step 303: The base station determines whether it is necessary to update the control signaling, if yes, step 304 is performed; otherwise, step 305 is performed;

Step 304: The base station generates new control signaling for the data packet to be transmitted by the MBMS, and generates corresponding update indication signaling when the control signaling is updated.

Step 305: The base station does not generate new control signaling for the data packet to be transmitted by the MBMS, and continues to use the previous control signaling, but needs to generate corresponding update indication signaling when the control signaling does not occur.

Step 306: The base station sends the control signaling and its corresponding update indication signaling to the terminal. In this step, the base station needs to package the control signaling and its corresponding update indication signaling into a format that the terminal can identify, and the base station The control signaling of the MBMS data packet to be transmitted that is finally formed is sent on the specified resource according to the specified format, and the MBMS data packet to be transmitted this time is The update indication signaling corresponding to the control signaling is sent on the specified resource according to a prescribed format.

In this embodiment, the control signaling includes at least the time-frequency resource information (transmission time and transmission frequency) used by the base station to transmit each MBMS data packet, and the MCS.

In this embodiment, information related to the single cell MBMS may also be generated and transmitted, for example, information included in the P-MCCH of the single cell mode (eg, scheduling information of the S-MCCH, effective service information, etc.), single cell mode Information contained in the S-MCCH (eg, MBMS radio bearer configuration information, etc.). The base station may also use the same processing as the control information of the MBMS data packet in the above information, and include the information in the control signaling of the MBMS or form a separate signaling, and form corresponding update indication signaling. The information and its update indication signaling are then sent on the specified resources in a prescribed format.

Based on the MBMS control signaling update method of the present invention, the terminal first receives the update indication signaling, and determines whether the control signaling of the corresponding MBMS is updated according to the received update indication signaling, and if the update does not occur, the last received is used. The control signaling of the MBMS that has been stored locally; if an update occurs, the control signaling of the new MBMS is received and stored locally. Since the control signaling with a large amount of data is not frequently received, and the amount of update indication signaling data is very small, the terminal can save power consumption and delay the use time of the mobile phone.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A method for updating a base station based MBMS control signaling, characterized in that: a base station transmitting a multimedia broadcast multicast service (MBMS) determines whether an MBMS control signaling is updated and generates a corresponding update indication signaling. The base station sends the control signaling of the MBMS and the corresponding update indication signaling to the terminal.

The method according to claim 1, wherein, for the single cell mode MBMS, before the base station determines whether the control signaling of the MBMS is updated, the base station that sends the MBMS configures the control of the MBMS. Signaling.

The method according to claim 1, wherein, for the multi-cell mode MBMS, before the base station determines whether the control signaling of the MBMS is updated, the multi-cell broadcast multicast coordination entity (MCE) is MBMS configuration control signaling in a multi-cell mode in a multimedia broadcast multicast single frequency network (MBSFN), and transmitting control signaling of the MBMS to a base station participating in the MBMS.

The method according to claim 1, wherein the terminal first receives the update indication signaling, and determines, according to the received update indication signaling, whether the control signaling of the MBMS is updated, if not The update is performed using the previously received control signaling of the MBMS stored locally; if an update occurs, the new control signaling of the MBMS is received and stored locally.

The method according to claim 1, wherein the MBMS control signal includes at least a time-frequency resource, a modulation and an encoding method used by the base station to transmit each MBMS data packet.

The method according to claim 1 or 2, wherein in the MBMS of the single cell mode, the MBMS control signaling further comprises a primary multicast control channel in a single cell mode.

(P-MCCH) and/or single-cell mode secondary multicast control channel (S-MCCH) Signaling.

A base station-based MBMS control signaling update system, comprising: a base station, configured to determine whether an MBMS control signaling is updated and generate corresponding update indication signaling; and control the MBMS The signaling and the corresponding update indication signaling are sent to the terminal; the terminal is configured to receive the update indication signaling of the control signaling of the MBMS, and decide to receive or not receive the control message of the MBMS according to the update indication signaling make.

The system according to claim 7, wherein, for the single cell mode MBMS, the base station is further configured to configure control signaling of the MBMS, before transmitting the control signaling of the MBMS, the base station It is also used to judge whether the current MBMS control signaling is updated, and form corresponding update indication signaling.

The system of claim 7, wherein for the multi-cell mode MBMS, the system further comprises:

10. The system according to claim 7, wherein the control signal of the MBMS includes at least a time-frequency resource, a modulation and a coding mode used by each base station to transmit each MBMS data packet.