CN101521848B - Sub-frame allocation method, allocation device and network system - Google Patents

Abstract

The embodiment of the present invention discloses a method for allocating subframes, including: determining the expected value of the data to be sent within the time deviation of the sending time of the data packet, and comparing the expected value of the data to be sent with the data capacity of the subframe, if the If the data capacity is greater than or equal to the expected value of the sending data, then allocate a subframe to carry the sending data. An embodiment of the present invention also provides a distribution device, including: an information unit, configured to determine the expected value of the transmitted data within the transmission time deviation of the data packet, and a comparison unit, configured to accommodate the expected value of the transmitted data and the data of the subframe The first processing unit is configured to allocate a subframe to carry the transmission data when the comparison result of the comparison unit is that the data capacity of the subframe is greater than or equal to the expected value of the transmission data. The embodiment of the present invention also provides a network system. The technical solution of the embodiment of the present invention can improve the utilization rate of subframes and save network resources.

Description

Subframe allocation method, allocation device and network system

technical field

The present invention relates to the technical field of communication, and in particular to a subframe allocation method, allocation device and network system.

Background technique

MBMS (Multimedia Broadcast and Multicast Service, Multimedia Multicast Multicast) service is one of the important contents of 3GPP (3rd Generation Partnership Project, Third Generation Partnership Project) business development, mainly refers to the network side simultaneously sends the same multimedia data to Multiple recipients. SFN (Single Frequency Network, single frequency network) is an important application scenario of MBMS in LTE (Long Term Evolution, long-term evolution plan). Multiple base stations simultaneously use the same physical resource to send the same data to the receiver, and the said same physical resource includes the same time resource and the same frequency resource.

In the MBMS architecture in LTE that 3GPP has determined, MBMS GW (MBMS gateway, multimedia multicast multicast gateway) is commonly referred to as aGW (access gateway, access gateway) and eNB (enhanced Node B, enhanced base station) Connected through M1 interface, connected with MCE (Multi-cell/multicast Coordination Entity, multicast control node) through M3 interface, MCE and eNB connected through M2 interface. The aGW adds a time stamp to the data packet to specify the sending time of the data packet on the air interface, and the eNB sends the data packet through the subframe within the specified time range according to the time stamp of the data packet. When the MCE decides to adopt the multicast Multi-cell mode, that is, the SFN mode in MBMS, the MCE needs to determine unified time-frequency domain resources for each cell in the SFA, including allocating subframes, and notify the eNB through the M2 interface. Based on the limitation of physical layer pilots, that is, there can only be one kind of pilot in a subframe, when MCE allocates subframes for each cell in an SFA, these subframes can only be used to transmit MBMS services in this SFA, and cannot be used To transmit MBMS services of other SFAs, it cannot be used to transmit unicast services. Therefore, in order to leave more subframes for other needs, it is required to meet the requirements of pilot frequency and Qos (Quality of Service, service quality requirements) , when the MCE allocates subframes for services in one SFA, the number of subframes allocated should be as small as possible, so as to improve the utilization rate of subframes and save network resources.

During the research and practice of the prior art, the inventor found the following problems in the prior art:

The prior art only proposes that the number of subframes allocated by the MCE for services in one SFA should be as small as possible, but no specific method is provided.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a subframe allocation method, allocation device and network system, which can improve the utilization rate of subframes and save network resources.

In order to solve the above technical problems, the embodiments provided by the present invention are achieved through the following technical solutions:

An embodiment of the present invention provides a method for allocating subframes, including: determining the expected value of the data to be sent within the time deviation of sending the data packet, and comparing the expected value of the data to be sent with the data capacity of the subframe, if the If the data capacity is greater than or equal to the expected value of the sending data, then allocate a subframe to bear the sending data.

An embodiment of the present invention provides a distributing device, including: an information unit, configured to determine the expected value of the data to be sent within the sending time deviation of the data packet, and a comparison unit, used to compare the expected value of the sent data with the data capacity of the subframe performing a comparison; the first processing unit is configured to allocate a subframe to carry the transmission data when the comparison result of the comparison unit is that the data capacity of the subframe is greater than or equal to the expected value of the transmission data.

An embodiment of the present invention provides a network system, including: an access gateway, configured to determine a sending time deviation of a data packet; a multicast control node, configured to determine an expected value of data sent within the sending time deviation of a data packet, and The expected value of the sent data is compared with the data capacity of the subframe, and if the data capacity of the subframe is greater than or equal to the expected value of the sent data, a subframe is allocated to carry the sent data.

It can be seen from the above technical solution that the technical solution of the embodiment of the present invention compares the expected value of the transmitted data with the data capacity of the subframe after determining the expected value of the transmitted data within the transmission time deviation of the data packet, and determines according to the comparison result The allocation of subframes is reasonable, so as to realize the allocation of as few subframes as possible under the premise of meeting pilot frequency and service quality requirements, improve the utilization rate of subframes, and save network resources.

Description of drawings

Fig. 1 is a flow chart of an example frame allocation method of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the maximum transmission time deviation T according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of an example frame allocation method of the embodiment of the present invention;

Fig. 4 is a schematic diagram of a frame allocation method 2 of an example embodiment of the present invention;

Fig. 5 is a schematic diagram of an example frame allocation method 3 of the embodiment of the present invention;

FIG. 6 is a schematic diagram of eNB processing methods in the case of interval time stamps according to an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a distributing device according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a network system according to an embodiment of the present invention.

Detailed ways

An embodiment of the present invention provides a method for allocating subframes, which is used to improve the utilization rate of subframes and save network resources.

Please refer to Fig. 1, which is a flowchart of an example frame allocation method of the present invention, including:

101. Determine the sending time deviation of the data packet;

Due to the real-time nature of MBMS services, data packets can only be sent within a specified time range. If this time range is exceeded, the eNB will no longer send this data packet over the air interface. Therefore, in the solution of the embodiment of the present invention, the aGW first determines the sending time deviation of the data packet, and the maximum value of the sending time deviation is called the maximum sending time deviation T. The sending time offset is determined according to the timestamp of the data packet and the time when the air interface actually sends data, and the maximum sending time offset is determined according to the timestamp of the data packet and the latest time when the air interface sends data.

FIG. 2 is a schematic diagram of a maximum transmission time deviation T according to an embodiment of the present invention. Figure 2 includes A and B, where B represents the latest time for air interface transmission, and A represents the transmission time specified by the time stamp of the data packet.

T=Max (latest time of air interface transmission - transmission time specified by timestamp) Formula 1

After aGW receives the MBMS session start (Multimedia Multicast Multicast Session Start) message from BM-SC (Broadcast Multicast Service Centre, multicast multicast service center), it determines the information to be used for the data packet according to the Qos parameters specified by BM-SC. Added timestamp, the timestamp specifies the sending time of the data packet at the air interface, and specifies the latest time for sending the data packet at the air interface, so as to obtain the maximum sending time deviation of the data packet, and send this parameter through the MBMS session start message to MCE. It should be noted that the aGW can also directly specify the maximum transmission time deviation of the data packet, so that the transmission time of the data packet on the air interface can be obtained according to the transmission time of the data packet specified by the timestamp and the specified maximum transmission time deviation of the data packet. latest time.

102. Determine the expected value of the sent data according to the sending time deviation of the data packet and the Qos parameter;

The MCE determines the expected value V of data sent within the maximum sending time deviation T according to the maximum sending time deviation and the average data rate specified in Qos.

V=average rate×maximum sending time deviation T×adjustment factor Formula 2

Considering that the rate of sending data is not constant, an adjustment factor is set. The adjustment factor takes a value in the vicinity of the value 1, which can be greater than, equal to, or less than 1. The value is determined by the MCE itself and can be determined according to the Qos of the service. The parameters are determined and can be adjusted as needed. If the aGW or eNB already knows the data rate variance of the MBMS service in the subsequent data transmission process, it can also inform the MCE of the data rate variance through control signaling, and the MCE further adjusts the adjustment factor in combination with this parameter.

103. Allocate subframes according to the relationship between the expected value of the data to be sent and the data capacity of the subframes.

After the MCE determines the modulation and coding format for data transmission, it allocates subframes according to the relationship between the estimated value V of the transmitted data and the data capacity of the subframe, which can be divided into three situations:

1) When the data capacity of a subframe is greater than the expected value V of the sent data:

The data capacity of the subframe is greater than the expected value V of the transmitted data, indicating that the bottleneck of transmission lies in the maximum transmission time deviation of the data packet. The subframe allocation method in this case is shown in Figure 3. . The shaded part in Fig. 3 represents the amount of data carried by the subframe. At this time, for the expected value V of the data to be sent, only one subframe needs to be allocated, and the amount of data carried by the subframe can be the expected value V of the sent data, or larger than the expected value V of the sent data, as long as it does not exceed the expected value V of the sent data. The data capacity of the frame is sufficient.

In this manner, after carrying data in each subframe, there is a part of capacity surplus or just fully utilized.

2) When the data capacity of a subframe is less than the expected value V of the sent data:

The data capacity of the subframe is less than or equal to the estimated value V of the sent data, indicating that the bottleneck of transmission lies in the data capacity of the subframe. Frames are used to carry data. At this time, two subframe allocation modes may be included, and how to allocate bearer capacity in a subframe is determined by the MCE according to actual conditions.

When the service rate is unstable, the subframe allocation mode that can be used is shown in FIG. 4 as a schematic diagram of the second frame allocation mode of the embodiment of the present invention. The shaded part in Fig. 4 represents the amount of data carried by the subframe. At this time, for the expected value V of the transmitted data, a subframe is first allocated for carrying, the data capacity of the subframe is fully utilized, and the remaining transmitted data is allocated for carrying in another subframe. If the expected value V of the sent data is an integer multiple of the data capacity of the subframe, then the data capacity of each subframe is fully utilized, that is, the amount of data carried by each subframe is the expected value V of the sent data, otherwise the last A part of the subframe has a surplus capacity, and the surplus capacity can be used to carry an increased amount of data due to a sudden increase in the service rate. As shown in FIG. 4, data 1+data 2=V.

When the service rate is relatively stable, the available subframe allocation mode is shown in FIG. 5 as a schematic diagram of frame allocation mode 3 of the embodiment of the present invention. The shaded part in Fig. 5 represents the amount of data carried by the subframe. At this time, for the expected value V of the data to be sent, multiple subframes are allocated, and each allocated subframe carries data, but there is a surplus capacity, which can be used for other purposes, and the data carried by each subframe can be equal, or May not be equal. As shown in FIG. 5, data 1+data 2=V.

3) When the data capacity of a subframe is equal to the estimated value V of the transmitted data:

The data capacity of the subframe is equal to the expected value V of the data to be sent, and at this time, just one subframe is allocated for carrying data.

After the MCE determines the subframe allocation mode, it informs the eNB of the allocation mode through the control signaling process, and at the same time informs the eNB of the maximum transmission time deviation T of the data packet, and the eNB sends the data packet through the subframe.

It should be noted that the above allocation of subframes can be adjusted. If in the subsequent data transmission process, the data actually transmitted within the maximum transmission time deviation T exceeds the transmission capacity allocated by the MCE in advance (that is, according to the estimated value of the transmitted data After the subframe is allocated in relation to the data capacity of the subframe, the excess data will be discarded by the eNB. At this time, the eNB can report to the MCE through the M2 interface. In addition, if the aGW finds that the data rate increases during subsequent data transmission, it can also report to the MCE through the M3 interface. According to the report message, the MCE can adjust the subframe allocation method in various ways, so that the shared transmission capacity of the allocated subframes becomes larger. The adjustment includes: increasing the "adjustment factor", reducing the time interval between two available subframes, increasing the available The physical resource block used to carry the service data in the subframe, modify the modulation and coding format so that more data can be accommodated in a subframe (if Qos allows), etc.

If in the subsequent data transmission process, the data actually transmitted within the maximum transmission time deviation T is less than the set threshold value of the transmission capacity allocated by the MCE in advance, at this time, the eNB can report to the MCE through the M2 interface. In addition, if the aGW finds that the data rate decreases during subsequent data transmission, it can also report to the MCE through the M3 interface. According to the report message, the MCE can adjust the subframe allocation method in various ways, so that the shared transmission capacity of the allocated subframes becomes smaller. The adjustment includes: reducing the "adjustment factor", increasing the time interval between two available subframes, reducing The physical resource blocks used to carry the service data in a small available subframe, modify the modulation and coding format so that the amount of data that can be accommodated in a subframe becomes smaller (if Qos allows), etc.

The above description is the subframe allocation method when the data of one SFN-mode MBMS service is transmitted in the same SFA. If the data of the second SFN-mode MBMS service is started to be transmitted in the same SFA, because the data of the two MBMS services They are sent in the same SFA, so their data can also be transmitted together in the same subframe, then the specific processing of subframe allocation is as follows:

First, similar to the process described in steps 101 and 102 above, the sending time deviation of the data packet is determined, and the expected value of the sending data is determined according to the sending time deviation of the data packet and the Qos parameter.

Then, the MCE checks the subframe allocated for the MBMS service in the first SFN mode. If there is still a certain amount of data capacity in the allocated subframe, and this margin can accommodate the MBMS service in the second SFN mode For the expected value of sending data, there is no need to allocate new subframes, and the originally allocated subframes are still used to bear the data of the MBMS service in the second SFN mode.

If the margin of the data capacity of the allocated subframe cannot accommodate the expected value of data sent under the MBMS service in the second SFN mode, the MCE can make some adjustments to make the original allocated subframe meet the requirements. The adjustment method includes: reducing the "adjustment factor" of the MBMS service in the first SFN mode, reducing the time interval between two available subframes, and adjusting the Qos of the MBMS service in the first SFN mode. The data of the business occupies capacity in the allocated subframe (for example: the capacity of the idle subframe in Figure 4 cannot meet the new business, it can be adjusted to the subframe allocation method shown in Figure 5 to meet the MBMS business of the second SFN mode demand), adjust the modulation and coding mode of the MBMS service in the first SFN mode to increase the data capacity of the subframe (if Qos allows).

If the MCE cannot adjust the original subframe to meet the transmission requirements of the MBMS service in the second SFN mode, it needs to allocate a new subframe at this time. The new subframes can be allocated according to the method described in step 103, which will not be described in detail here. In addition, the new subframe can only be used to transmit the MBMS service in the second SFN mode, or a part of the original MBMS data in the first SFN mode can be moved into the newly allocated subframe.

After the MCE adjusts the subframe allocation scheme, it needs to inform all eNBs in the SFA of the updated subframe allocation method, and specify a unified effective time point for all cells in the SFA. From this effective point, the new subframe allocation is adopted mode to transmit MBMS services.

After learning the subframe allocation method from the MCE, the eNB selects a subframe from the allocated subframes according to the timestamp carried by the data packet, and then sends the data packet through the subframe.

The eNB can directly infer the corresponding subframe according to the timestamp carried by the data packet, but this subframe is not necessarily allocated to the MBMS service by the MCE, so starting from this subframe, determine the next subframe allocated to the service by the MCE The available subframe is used as the subframe for actually sending the MBMS data packet.

If the aGW adds timestamps to data packets, it timestamps every few packets. For packets without timestamps, the eNB can infer the sending time of these packets based on the timestamps of other packets, the length of the data packet, and other information. , and determine the subframe to send the data packet out.

Please refer to FIG. 6 , which is a schematic diagram of an eNB processing manner in the case of interval time stamps according to an embodiment of the present invention.

Figure 6 shows three subframes and five data packets, of which the first data packet has a time stamp T1, the fifth packet has a time stamp T5, and the other three data packets do not have a time stamp. The condition deduces that the transmission times specified by the aGW for them are T2, T3, T4.

For the first data packet with time stamp T1, the first available subframe after T1 (the second subframe from the left in FIG. 6 ) is used to transmit the first data packet.

For the next few packets without timestamps, the processing is as follows:

When the eNB deduces that the sending time specified by the aGW for the second data packet is T2, and compares T2 with the sending time of the currently available subframe (the second subframe from the left in Figure 6), the time indicated by T2 is the first, And there is still free transmission space in the currently available subframe, then the data packet is transmitted in the currently available subframe.

When eNB deduces that the sending time specified by aGW for the third data packet is T3, and compares T3 with the sending time of the currently available subframe (the second subframe from the left in Figure 6), the time indicated by T3 is the first, However, if there is no free capacity in the currently available subframe, the data packet will not be transmitted in the currently available subframe.

At this point, the eNB compares the transmission time T3 with the transmission time of the next available subframe (the third subframe from the left in Figure 6), and if the difference between the two is smaller than the maximum transmission time deviation T determined by the aGW, then The eNB transmits the data packet in the next available subframe; if the difference between the two is greater than the maximum transmission time deviation T determined by the aGW, the eNB discards the data packet.

When the eNB sends data through a subframe (the second subframe from the left in Figure 6), it receives the fourth data packet shown in Figure 6, and infers that the sending time specified by the aGW for the fourth data packet is T4, And compare T4 with the sending time of the currently available subframe (the third subframe from the left in Figure 6), if the time represented by T4 is before the current available subframe, and there is still free capacity in the currently available subframe, then This packet is transmitted in the currently available subframe.

It can be found that the frame allocation method of the example embodiment of the present invention is to compare the expected value of the transmitted data with the data capacity of the subframe after determining the expected value of the transmitted data within the transmission time deviation of the data packet, and determine the subframe according to the comparison result allocation, if the data capacity of the subframe is greater than or equal to the expected value of the transmission data, then allocate one subframe to carry the transmission data, otherwise allocate multiple subframes to carry the transmission data, so the allocation is more reasonable, so as to realize Allocate as few subframes as possible under the premise of meeting the pilot frequency and service quality requirements, improve the utilization rate of subframes, and save network resources. In addition, the allocation of subframes can also be adjusted according to actual conditions, which is more flexible.

The above content introduces the subframe allocation method of the embodiment of the present invention in detail, and accordingly, the embodiment of the present invention provides an allocation device and a network system.

Please refer to Fig. 7, which is a schematic structural diagram of a dispensing device according to an embodiment of the present invention.

As shown in FIG. 7 , the allocation device includes: an information unit 701 , a comparison unit 702 and a first processing unit 703 . The allocation device refers to the multicast control node MCE in the embodiment of the present invention.

The information unit 701 is configured to determine the expected value of the data sent within the sending time deviation of the data packet. The information unit 701 determining the expected value of the data to be sent within the sending time deviation specifically includes: determining the expected value of the data to be sent within the sending time deviation according to the average data rate, the sending time deviation and an adjustment factor, the adjustment factor being greater than or equal to 1.

A comparing unit 702, configured to compare the expected value of the sent data with the data capacity of the subframe.

The first processing unit 703 is configured to allocate a subframe to carry the sending data when the comparison result of the comparing unit 702 is that the data capacity of the subframe is greater than or equal to the expected value of the sending data.

The allocating device further includes: a second processing unit 704 .

The second processing unit 704 is configured to allocate multiple subframes to carry the sending data when the comparison result of the comparing unit 702 is that the data capacity of the subframe is smaller than the expected value of the sending data.

When the data capacity of the subframe is greater than the expected value of the sent data, the first processing unit 703 allocates the amount of sent data carried by the subframe to be greater than or equal to the expected value of the sent data and less than or equal to the The value of the data capacity of the subframe; when the data capacity of the subframe is equal to the expected value of the data to be sent, the amount of data to be sent carried by the allocated subframe is the expected value of the data to be sent.

The second processing unit 704 assigning a plurality of subframes to carry transmission data includes: allocating the data capacity of the first allocated subframe to bear transmission data, and allocating the remaining transmission data to another subframe for carrying; or, allocating all The data capacity of the allocated subframes reserves free capacity to carry and send data.

The distribution device further includes: an adjustment unit 705 .

The adjustment unit 705 is configured to adjust the subframe allocation process according to the received report message, the adjustment includes modifying the adjustment factor, adjusting the time interval between subframes, adjusting the physical resource blocks in the subframe, or adjusting the data modulation and coding Way.

The allocating device further includes: a third processing unit 706 .

The third processing unit 706 is configured to detect that the first processing unit 703 or the second processing unit 704 is assigned to the first single frequency network mode when data of multiple single frequency network modes is sent in the same single frequency network area Whether the remaining capacity of the subframe allocated by the first SFN mode is greater than or equal to the expected value of sending data within the transmission time deviation in other SFN modes; Sending data in the single frequency network mode; if not, adjust the subframe allocation in the first single frequency network mode or directly allocate a new subframe to bear the sending data in other single frequency network modes. The adjustment of the subframe allocation in the first single frequency network mode includes: reducing the adjustment factor in the first single frequency network mode, reducing the time interval between subframes, and adjusting the first single frequency network mode. The occupied capacity of the data in the allocated sub-frame, or adjusting the data modulation and coding mode in the first SFN mode makes the data capacity of the sub-frame larger.

Please refer to FIG. 8 , which is a schematic structural diagram of a network system according to an embodiment of the present invention.

As shown in FIG. 8 , the network system includes: an access gateway 801 and a multicast control node 802 .

The access gateway 801 is configured to determine the sending time offset of the data packet. The sending time offset of the data packet is determined according to the time stamp of the data packet and the time when the air interface actually sends data, or according to the time stamp of the data packet and the latest time for sending data by the air interface, or directly according to a set value.

The multicast control node 802 is configured to determine the expected value of the data to be sent within the time offset of the data packet, and compare the expected value of the data to be sent with the data capacity of the subframe, if the data capacity of the subframe is greater than or is equal to the expected value of the sending data, then allocate a subframe to carry the sending data.

Further, the multicast control node 802 allocates multiple subframes to carry the sending data when the data capacity of the subframe is smaller than the expected value of the sending data.

The network system further includes: an enhanced base station 803 .

The enhanced base station 803 is configured to select a subframe from the subframes allocated by the multicast control node according to the time stamp of the data packet, and then send the sending data through the subframe.

To sum up, the technical solution of the embodiment of the present invention determines the expected value of the transmitted data within the transmission time deviation, compares the expected value of the transmitted data with the data capacity of the subframe, and determines the allocation of the subframe according to the comparison result. In this way, there will be no waste in allocation, so as to realize the allocation of as few subframes as possible as soon as possible under the premise of meeting pilot frequency and service quality requirements, improve the utilization rate of subframes, and save network resources.

Furthermore, the technical solutions of the embodiments of the present invention propose specific processing methods for different comparison results, which can meet the needs of various situations.

Further, the technical solution of the embodiment of the present invention can adjust the allocation process according to the received report message, and the report message can be generated by the enhanced base station or the access gateway during the data transmission process, so the application is more flexible.

A subframe allocation method, an allocation device, and a network system provided by the embodiments of the present invention have been described above in detail. For those skilled in the art, based on the ideas of the embodiments of the present invention, they will understand both the specific implementation and the scope of application. There are changes, and in summary, the contents of this specification should not be construed as limiting the present invention.

Claims (21)

1. A subframe allocation method, characterized in that, comprising: According to the data average rate specified in the sending time deviation and the quality of service requirement Qos of the data packet, determine the expected value of sending data in the sending time deviation of the data packet, Comparing the expected value of the sending data with the data capacity of the subframe, if the data capacity of the subframe is greater than or equal to the expected value of the sending data, allocating a subframe to carry the sending data, the The subframe is the subframe allocated by the multicast control node MCE for the MBMS service in a single frequency network area SFA. 2. The subframe allocation method according to claim 1, wherein the method further comprises: If the data capacity of the subframe is smaller than the expected value of the data to be sent, multiple subframes are allocated to carry the data to be sent. 3. The subframe allocation method according to claim 2, wherein the allocation of multiple subframes to carry and send data comprises: All the data capacity of the first allocated subframe is used to carry the transmission data, and the remaining transmission data is allocated to another subframe for transmission; or, The data capacity of all allocated subframes is reserved as free capacity to carry and send data. 4. The method for allocating subframes according to claim 1, wherein the estimated value of the transmission data within the determined transmission time deviation is specifically: According to the average data rate of the sent data, the sending time deviation and the adjustment factor, the expected value of the data sent within the sending time deviation is determined. 5. The subframe allocation method according to claim 1 or 4, characterized in that: The sending time offset is determined according to the time stamp of the data packet and the time when the air interface actually sends data, or according to the time stamp of the data packet and the latest time when the air interface sends data, or directly according to a set value. 6. The subframe allocation method according to claim 4, wherein the method further comprises: The subframe allocation process is adjusted according to the received report message, and the adjustment includes: modifying an adjustment factor, adjusting a time interval between subframes, adjusting physical resource blocks in a subframe, or adjusting a data modulation and coding method. 7. The subframe allocation method according to claim 6, characterized in that: The report message is generated and sent by the enhanced base station or the access gateway during the data sending process. 8. The subframe allocation method according to claim 6 or 7, characterized in that: If the report content in the report message is that the data actually sent within the sending time offset exceeds the shared transmission capacity of the allocated subframes, or the sending rate of the sent data becomes larger, then the adjustment specifically includes: increasing the adjustment factor, decreasing The time interval between subframes, increasing the physical resource blocks in the subframe, or adjusting the data modulation and coding method to increase the data capacity of the subframe; If the report content in the report message is that the data actually sent within the sending time offset is less than the set threshold value of the transmission capacity shared by the allocated subframes, or the sending rate of the sent data becomes smaller, then the adjustment is specifically: Small adjustment factors, increasing the time interval between subframes, reducing physical resource blocks in subframes, or adjusting data modulation and coding methods reduce the data capacity of subframes. 9. The subframe allocation method according to any one of claims 1 to 4, wherein the method further comprises: If the data of multiple single frequency network modes is sent in the same single frequency network area, it is detected whether the remaining capacity of the subframe allocated by the first single frequency network mode is greater than or equal to the transmission time deviation in other single frequency network modes The expected value of the data sent within, If yes, the remaining capacity of the subframe allocated by the first single frequency network mode carries the transmission data in other single frequency network modes; If not, the subframe allocation in the first single frequency network mode is adjusted or a new subframe is directly allocated to carry the transmission data in other single frequency network modes. 10. The subframe allocation method according to claim 9, wherein said adjusting the subframe allocation in the first single frequency network mode comprises: Reduce the adjustment factor in the first SFN mode, reduce the time interval between subframes, adjust the occupied capacity of the data in the allocated subframe in the first SFN mode, or adjust the first SFN mode The data modulation and encoding method in the network mode increases the data capacity of the subframe. 11. The subframe allocation method according to claim 1, characterized in that: When the data capacity of the subframe is greater than the expected value of the sent data, the amount of sent data carried by the allocated subframe is greater than or equal to the expected value of the sent data and less than or equal to the data of the subframe the value of the holding capacity; When the data capacity of the subframe is equal to the expected value of the sent data, the amount of sent data carried by the allocated subframe is the expected value of the sent data. 12. The subframe allocation method according to claim 1, wherein the method further comprises: After selecting a subframe from the allocated subframes according to the time stamp of the data packet, the sending data is sent through the selected subframe. 13. A dispensing device, characterized in that it comprises: The information unit is used to determine the expected value of the data sent within the sending time deviation of the data packet according to the sending time deviation of the data packet and the average data rate specified in the quality of service requirement Qos, A comparison unit, configured to compare the expected value of the transmitted data with the data capacity of the subframe; The first processing unit is configured to allocate a subframe to carry the transmission data when the comparison result of the comparison unit is that the data capacity of the subframe is greater than or equal to the expected value of the transmission data, and the subframe It is a subframe allocated by the multicast control node MCE for the MBMS service in a single frequency network area SFA. 14. The dispensing device of claim 13, further comprising: The second processing unit is configured to allocate a plurality of subframes to carry the sending data when the comparison result of the comparing unit is that the data capacity of the subframe is smaller than the expected value of the sending data. 15. Dispensing device according to claim 13 or 14, characterized in that: When the data capacity of the subframe is greater than the expected value of the transmitted data, the first processing unit allocates the amount of transmitted data carried by the subframe to be greater than or equal to the expected value of the transmitted data and less than or equal to the expected value of the transmitted data. The value of the data capacity of the subframe; When the data capacity of the subframe is equal to the expected value of the sent data, the first processing unit allocates the amount of sent data carried by the subframe as the expected value of the sent data. 16. Dispensing device according to claim 13 or 14, characterized in that: The second processing unit allocating multiple subframes to carry transmission data includes: allocating the data capacity of the first allocated subframe for carrying transmission data, and allocating the remaining transmission data to another subframe for carrying; or, The data capacity of all allocated subframes is reserved as free capacity to carry and send data. 17. The dispensing device of claim 14, further comprising: An adjustment unit, configured to adjust the subframe allocation process according to the received report message, the adjustment includes modifying the adjustment factor, adjusting the time interval between subframes, adjusting the physical resource blocks in the subframe, or adjusting the data modulation and coding method . 18. The dispensing device of claim 14, further comprising: The third processing unit is configured to detect the subframe allocated for the first single frequency network mode by the first processing unit or the second processing unit when sending data of multiple single frequency network modes in the same single frequency network area Whether the remaining capacity is greater than or equal to the expected value of sending data within the sending time deviation in other SFN modes, If yes, the remaining capacity of the subframe allocated in the first SFN mode is used to carry the transmission data in other SFN modes; if not, the subframe allocation in the first SFN mode is adjusted Or directly allocate a new subframe to bear the sending data in other single frequency network modes. 19. A network system, characterized in that it comprises: access gateway, used to determine the sending time deviation of the data packet; The multicast control node is used to determine the expected value of sending data within the sending time deviation of the data packet according to the sending time deviation of the data packet and the data average rate specified in the quality of service requirement Qos, and send the data to the The expected value is compared with the data capacity of the subframe. If the data capacity of the subframe is greater than or equal to the expected value of the transmitted data, a subframe is allocated to carry the transmitted data. The subframe is multicast control The node MCE allocates subframes for MBMS services in a single frequency network area SFA. 20. The network system according to claim 19, characterized in that: The multicast control node allocates multiple subframes to carry the sending data when the data capacity of the subframe is smaller than the expected value of the sending data. 21. The network system according to claim 19 or 20, wherein the network system further comprises: The enhanced base station is configured to select a subframe from the subframes allocated by the multicast control node according to the time stamp of the data packet, and then send the sending data through the subframe.

Images