WO2010111925A1 - 多媒体广播多播业务控制信令的传输方法和系统 - Google Patents
多媒体广播多播业务控制信令的传输方法和系统 Download PDFInfo
- Publication number
- WO2010111925A1 WO2010111925A1 PCT/CN2010/071324 CN2010071324W WO2010111925A1 WO 2010111925 A1 WO2010111925 A1 WO 2010111925A1 CN 2010071324 W CN2010071324 W CN 2010071324W WO 2010111925 A1 WO2010111925 A1 WO 2010111925A1
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- Prior art keywords
- radio frame
- mbms control
- control channel
- subframe
- terminal
- Prior art date
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- 230000011664 signaling Effects 0.000 title claims abstract description 185
- 230000005540 biological transmission Effects 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000004048 modification Effects 0.000 claims description 60
- 238000012986 modification Methods 0.000 claims description 60
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 238000010586 diagram Methods 0.000 description 11
- 230000007774 longterm Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/58—Message adaptation for wireless communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
- H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
Definitions
- the present invention relates to a broadcast transmission technology in a Long Term Evolution (LTE) system, and more particularly to a method and system for transmitting Multimedia Broadcast Multicast Service (MBMS) control signaling.
- LTE Long Term Evolution
- MBMS Multimedia Broadcast Multicast Service
- MBMS Multimedia Broadcast Multicast Service
- 3GPP 3rd Generation Partnership Project
- 3rd Generation Partnership Project 3rd Generation Partnership Project
- MBMS Multimedia Broadcast Multicast Service
- the service is a technology for transmitting data from one data source to multiple targets, realizing the sharing of resources of the network (including the core network and the access network), and improving the utilization of network resources, especially air interface resources.
- MBMS defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize multicast and broadcast of high-speed multimedia services, and provide a variety of rich multimedia services such as video and audio.
- MBMS services can be transmitted using a hybrid carrier.
- the hybrid carrier means that the unicast service (Unicast) and the multicast service (MBMS) are transmitted on the same carrier in a time division multiplexing manner, and the minimum unit of time division multiplexing is a subframe.
- the radio frame used to carry the MBMS service in LTE satisfies the following relationship:
- radioFrameAllocationPeriod radioFrameAllocationOffset
- SFN System Frame Number
- the radioFrameAllocationPeriod indicates the multimedia broadcast multicast service single frequency network.
- the maximum system frame number in LTE that is, the system is the number of the radio frame) is 1023.
- radioFrameAllocationOffset indicates the offset of the MBSFN radio frame, which is greater than or equal to An integer of 0 and less than the value of the selected MBSFN radio frame period; mod indicates the modulo operation of the SFN on the radioFrameAllocationPeriod.
- SIB2 System Information Block Type 2
- the obtained MBSFN radio frame is as shown in FIG. 1, and the shaded part in the figure indicates the MBSFN radio frame configured by the system.
- the MBSFN radio frame is a radio frame used to carry MBMS services. Further, the system configures, on the MBSFN radio frame, those subframes that are 7-bit MBMS services, which are called MBSFN subframes. Both MBSFN frames and MBSFN subframes are referred to as MBSFN resources; these MBSFN resources constitute a Multicast Channel (MCH) transport channel.
- MCH Multicast Channel
- the MBMS multicast control channel MCCH Multicast Control Channel
- P-MCCH Primary multicast control channel
- S-MCCH Secondary multicast control channel
- MCCH Control Channel
- MCCH Control Channel
- the LTE disclosed technology also specifies that one or two P-MCCH scheduling information may be indicated on a System Broadcast Message (BCCH, Broadcast Control Channel), and one is transmitted in a single-cell mode on a downlink shared channel (DL-SCH, Downlink Shared Channel). On, one is transmitted on the MCH for multi-cell mode.
- the P-MCCH carries control signaling related to the MBSFN area service, and the signaling is used to indicate which valid MBMS and other messages are in the area. Interest. If necessary, the P-MCCH can also carry the S-MCCH indication information to help discover the S-MCCH.
- the MBMS service is divided into a single cell mode and a multi-cell mode
- the P-MCCH is also divided into a single cell mode and a multi-cell mode.
- One of the main features of the single cell mode is that multi-cell MBSFN combining is not supported, and the multi-cell mode must support multi-cell MBSFN combining.
- MCCH may no longer support MBSFN merging, regardless of the primary and secondary structure.
- the P-MCCH transmitted in the multi-cell mode must be carried on the multicast resource composed of the multicast frame, and the S-MCCH is also transmitted in the multi-cell mode, and also carries the multicast composed of the multicast frame. Resources. If the MCCH is no longer in the primary-sequence structure and the multi-cell mode transmission is not performed, the MCCH itself may be carried on the unicast resource, that is, on the DL-SCH, or may be carried on the multicast resource formed by the multicast frame, that is, On the MCH.
- the transmission on the system side is very random. That is to say, the terminal is required to receive the MBMS control channel (including: P-MCCH, S-MCCH, and MCCH) very frequently, so that the reception of the terminal also brings randomness, resulting in a large signaling overhead. It is not convenient for the terminal to save power. Summary of the invention
- the main purpose of the present invention is to provide a transmission method and system for MBMS control signaling, so as to eliminate the randomness of transmitting MBMS control signaling on the system side and receiving MBMS control signaling by the terminal, and reducing the signaling overhead of the terminal.
- the present invention provides a method for transmitting MBMS control signaling, the method comprising: transmitting, by a network side, indication information of a radio frame and/or a subframe carrying an MBMS control channel to a terminal by using high layer signaling, and transmitting the MBMS through the bearer Radio frame and/or subframe direction of the control channel
- the terminal sends MBMS control signaling;
- the MBMS control channel is: a multicast control channel (MCCH), or a primary multicast control channel (P-MCCH), or a secondary multicast control channel (S-MCCH), or a multicast indication channel (MICH) or multicast.
- Transport Channel MTCH
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel includes at least one of the following:
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel further includes: an MBSFN radio frame period and an MBSFN radio frame offset.
- radioFrameAllocationPeriod radioFrameAllocationOffset parses the radio frame carrying the MBMS control channel; where SFN indicates the system frame number, which is a positive integer; radioFrameAllocationPeriod indicates the MBSFN radio frame period; radioFrameAllocationOffset indicates the MBSFN radio frame offset, which is greater than or equal to An integer of 0 and less than the value of radioFrameAllocationPeriod; PmcchPeriod indicates the bearer The period information of the radio frame and/or sub-frame of the MBMS control channel is an integer greater than or equal to the radioFrameAllocationPeriod; PmcchOffset indicates the transmission offset information of the radio frame and/or subframe carrying the MBMS control channel, relative to the SFN.
- the method further includes at least one of the following steps:
- the network side implicitly notifies the terminal of the transmission offset by the MBSFN radio frame offset according to the preset correspondence between the transmission offset and the MBSFN radio frame offset;
- the network side implicitly notifies the terminal of the repetition period through the MBSFN radio frame period according to the preset correspondence between the repetition period and the MBSFN radio frame period;
- the network side implicitly notifies the terminal to the terminal by using a repetition period according to a preset correspondence between the repetition period and the modification period;
- the network side implicitly notifies the terminal of the repetition period through the modification period according to the preset correspondence between the repetition period and the modification period.
- the indication information that the network side sends the radio frame and/or the subframe that carries the MBMS control channel to the terminal by using the high layer signaling is:
- the network side is configured to notify the radio frame information of the MBMS control channel by using the high layer signaling, and further, in a manner of using a bitmap by the high layer signaling, or indicating the subframe number by using the high layer signaling, or fixed.
- the manner of the subframe indicates to the terminal the subframe information of the MBMS control channel carrying the MBMS control channel and specifically carrying the MBMS control channel.
- the high layer signaling is a system broadcast message, or a radio resource control (RRC) message, or dedicated signaling.
- RRC radio resource control
- the present invention also provides a method for transmitting MBMS control signaling, the method comprising: the network side carrying a radio frame and/or a subframe of the MBMS control channel by using high layer signaling
- the indication information is sent to the terminal, and the MBMS control signaling is sent to the terminal through the radio frame and/or subframe carrying the MBMS control channel.
- the MBMS control channel is: MCCH, or P-MCCH, or S-MCCH, or MICH, or MTCH.
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel includes at least one of the following:
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel further includes: an MBSFN radio frame period and an MBSFN radio frame offset.
- the method further includes at least one of the following steps:
- the network side implicitly notifies the terminal of the transmission offset by the MBSFN radio frame offset according to the preset correspondence between the transmission offset and the MBSFN radio frame offset;
- the network side implicitly notifies the terminal of the repetition period through the MBSFN radio frame period according to the preset correspondence between the repetition period and the MBSFN radio frame period;
- the network side implicitly notifies the terminal to the terminal by using a repetition period according to a preset correspondence between the repetition period and the modification period;
- the network side implicitly notifies the terminal of the repetition period through the modification period according to the preset correspondence between the repetition period and the modification period.
- the network side notifies the terminal of the radio frame information of the MBMS control channel by using the high layer signaling, and further indicates the bearer to the terminal by means of a bitmap, a method of indicating a subframe number, or a fixed subframe.
- the subframe information of the MBMS control channel that specifically carries the MBMS control channel in the radio frame of the MBMS control channel.
- the high layer signaling is a system broadcast message, or an RRC message, or dedicated signaling.
- the present invention also provides a method for transmitting MBMS control signaling, the method includes: the terminal acquiring, by using the high layer signaling, indication information of a radio frame and/or a subframe that carries the MBMS control channel from the network side;
- the MBMS control channel is: MCCH, or P-MCCH, or S-MCCH, or MICH, or MTCH.
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel includes at least one of the following:
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel further includes: an MBSFN radio frame period and an MBSFN radio frame offset.
- radioFrameAllocationPeriod radioFrameAllocationOffset parses the radio frame carrying the MBMS control channel; where SFN indicates the system frame number, which is a positive integer; radioFrameAllocationPeriod indicates the MBSFN radio frame period; radioFrameAllocationOffset indicates the MBSFN radio frame offset, which is greater than or equal to An integer of 0, which is smaller than the value of radioFrameAllocationPeriod; PmcchPeriod indicates the period of occurrence of radio frames and/or subframes carrying the MBMS control channel, which is an integer greater than or equal to radioFrameAllocationPeriod; PmcchOffset indicates the radio frame of the MBMS control channel.
- the high layer signaling is a system broadcast message, or an RRC message, or dedicated signaling.
- the present invention also provides a transmission system for MBMS control signaling, where the system includes a connected network side and a terminal, where
- the network side is configured to send, by using the high layer signaling, indication information of the radio frame and/or the subframe that carries the MBMS control channel to the terminal, and to the radio frame and/or subframe that carries the MBMS control channel to the The terminal sends MBMS control signaling;
- the terminal is configured to parse a radio frame and/or a subframe that carries the MBMS control channel according to the obtained indication information of the radio frame and/or the subframe, and read from the radio frame and/or the subframe. Take MBMS control signaling.
- the MBMS control channel is: MCCH, or P-MCCH, or S-MCCH, or MICH, or MTCH.
- the indication information of the radio frame and/or subframe that carries the MBMS control channel includes at least one of the following: And including period information and transmission offset information of a radio frame and/or a subframe that carries an MBMS control channel;
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel further includes: an MBSFN radio frame period and an MBSFN radio frame offset.
- the method and system for transmitting MBMS control signaling provided by the present invention, the network side sends the indication information of the radio frame and/or the subframe carrying the MBMS control channel to the terminal through the high layer signaling; the terminal according to the acquired radio frame and/or The indication information of the subframe parses the radio frame and/or subframe carrying the MBMS control channel, and reads the MBMS control signaling from the radio frame and/or the subframe.
- the invention solves the problem that the MBMS control channel is configured on the system side, and provides a method for the MBMS control signaling transmission, which eliminates the randomness of the system side transmitting the MBMS control signaling and the terminal receiving the MBMS control signaling with a small signaling overhead.
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel in the present invention can be flexibly configured, which provides flexibility for the network side to send MBMS control signaling; the present invention carries the MBMS control channel.
- the sub-frames can be flexibly selected to facilitate scheduling on the network side.
- FIG. 1 is a schematic diagram of a configuration of an MBSFN radio frame in the prior art
- FIG. 2 is a flowchart of a method for transmitting MBMS control signaling according to the present invention
- FIG. 3 is a schematic diagram of a radio frame used to carry an MBMS according to an embodiment of the present invention.
- FIG. 4 is a schematic diagram 1 of a radio frame carrying an MBMS control channel according to an embodiment of the present invention
- FIG. 5 is a schematic diagram 2 of a radio frame carrying an MBMS control channel according to an embodiment of the present invention
- FIG. 6 is a schematic diagram of a radio bearer carrying an MBMS control channel according to an embodiment of the present invention
- Frame diagram three is a schematic diagram of a radio frame carrying an MBMS control channel according to an embodiment of the present invention
- FIG. 8 is a schematic diagram of a radio frame carrying an MBM S control channel according to an embodiment of the present invention
- FIG. 9 is a schematic diagram of a radio bearer carrying an MBMS control channel according to an embodiment of the present invention
- FIG. 10 is a schematic structural diagram of a transmission system of an MBMS control signaling according to the present invention. detailed description
- a method for transmitting MBMS control signaling provided by the present invention mainly includes the following steps:
- Step 201 The network side sends the indication information of the radio frame and/or the subframe that carries the MBMS control channel to the terminal by using the high layer signaling, and sends the MBMS control signaling to the terminal by using the radio frame and/or the subframe that carries the MBMS control channel.
- the network side of the present invention may be a base station (eNB), or a Mobility Management Entity (MME), or a gateway (Get-way), or an Evolved Packet System (EPS), or a multi-point collaboration entity ( MCE, Multi-cell/Multicast Coordination Entity), etc.
- eNB base station
- MME Mobility Management Entity
- EPS Evolved Packet System
- MCE multi-point collaboration entity
- MCE Multi-cell/Multicast Coordination Entity
- the MBMS control channel referred to in the present invention may be either the P-MCCH and the S-MCCH described in the LTE disclosed technology, the MCCH described in the LTE disclosed technology, or the MICH (Multicast Indicator). Channel ), can also be other channels, such as: Multicast Transport Channel (MTCH, Multicast Traffic Channel) and so on.
- MTCH Multicast Transport Channel
- MBMS control channel in the present invention is not limited to the above, and may be extended according to actual needs.
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel that the eNB sends to the terminal through the high layer signaling is specifically: the radio frame carrying the MBMS control channel can be indicated only to the terminal, and those in the radio frame are If the frame carries the MBMS control channel, the fixed subframe that the eNB and the terminal have previously negotiated may be selected, or the terminal blindly detects the wireless carrying the MBMS control channel.
- the eNB only needs to send the indication information of the radio frame carrying the MBMS control channel to the terminal; the eNB may also only indicate the subframe carrying the MBMS control channel to the terminal, and the radio frame carrying the MBMS control channel may Selecting a fixed radio frame that is pre-negotiated by the eNB and the terminal, or the terminal blindly detecting the fixed subframe on each radio frame, so the eNB only needs to send the indication information of the subframe that carries the MBMS control channel to the terminal; the eNB can also simultaneously send the terminal to the terminal.
- the radio frame and the subframe carrying the MBMS control channel are indicated, so that the indication information of the radio frame and the subframe carrying the MBMS control channel needs to be transmitted to the terminal.
- the bitmap when the eNB notifies the indication information of the subframe, the bitmap may be in the form of a bitmap, or the manner of indicating the subframe number, or the manner of the fixed subframe, to indicate to the terminal that the radio bearer carrying the MBMS control channel carries the MBMS. Subframe information of the control channel.
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel includes at least one of the following:
- transmission offset information including control signaling carried on radio frames and/or subframes of the MBMS control channel; Repetition period information and modification period information of control signaling carried on radio frames and/or subframes of the MBMS control channel;
- the indication information of the radio frame and/or subframe carrying the MBMS control channel further includes: an MBSFN radio frame period and an MBSFN radio frame offset.
- the eNB transmits the radio frame and/or the subframe carrying the MBMS control channel to the terminal through the high layer signaling, which may be an MBSFN radio frame or a subframe resource, or may be a unicast frame or a subframe resource.
- the high layer signaling which may be an MBSFN radio frame or a subframe resource, or may be a unicast frame or a subframe resource.
- the sending of the indication information specifically includes two cases:
- the MBMS control channel of one MBSFN area is carried on the MCH, that is, the actual MBSFN resource.
- the radio frame used to carry the MBMS control channel needs to satisfy the following conversion relationship:
- radioFrameAllocationPeriod radioFrameAllocationOffset
- SFN represents the system frame number
- the value is 0 or a positive integer.
- SFN can take an integer from 0 to 1023
- radioFrameAllocationPeriod represents MBSFN wireless.
- radioFrameAllocationOffset indicates the MBSFN radio frame offset, which is an integer greater than or equal to 0, and is smaller than the value of radioFrameAllocationPeriod
- PmcchPeriod indicates the period information of the radio frame and/or subframe that carries the MBMS control channel, and the value is An integer greater than or equal to radioFrameAllocationPeriod
- mod represents the modulo operation.
- the terminal obtains the radio frame carrying the MBMS control channel according to the indication information, that is, the radio frame corresponding to the SFN that satisfies the above conversion relationship.
- the period PmcchPeriod of the radio frame and/or subframe carrying the MBMS control channel is the repetition period of the control signaling carried on the radio frame and/or subframe of the MBMS control channel; the radio carrying the MBMS control channel
- the transmission offset PmcchOffset of the frame and/or subframe is the transmission offset of the control signaling carried on the radio frame and/or subframe of the MBMS control channel.
- the eNB can inform the terminal of the period in which the radio frame and/or the subframe of the MBMS control channel is present through the PmcchPeriod, and the repetition period of the control signaling carried on the radio frame and/or the subframe of the MBMS control channel; by PmcchOffset
- the transmission offset of the radio frame and/or subframe carrying the MBMS control channel and the transmission offset of the control signaling carried on the radio frame and/or subframe of the MBMS control channel may be informed.
- PmcchPeriod can be used to describe The repetition period of the control signaling carried on the radio frames and/or subframes of the MBMS control channel, or may also be used to describe the modification period of the control signaling carried over the radio frames and/or subframes of the MBMS control channel.
- the PmcchPeriod parameter can only represent one of the above meanings, as follows:
- the modification period can be indirectly notified by a repeating period.
- the indirect notification can use a multiple relationship, which can be fixed by the protocol, configured, and notified to the terminal.
- the agreed modification period is 4 times of the repetition period, and the start position of the repetition period and the start position of the modification period may be kept aligned or not.
- the start position of the modification period is not required to be notified; It is necessary to notify the start position of the modification period when it is not aligned.
- the transmission offset indicated by PmcchOffset at this time is both the transmission offset of the modification period and the transmission offset of the repetition period.
- the repetition period can be indirectly notified by the modification period.
- the indirect notification can use a multiple relationship, which can be fixed by the protocol, configured, and notified to the terminal.
- the agreed repetition period is 0.25 times the ⁇ ⁇ tampering period, and the start of the repeat period and the start position of the modification period may or may not be aligned.
- Start position need to notify the start position of the modification period when it is not aligned.
- the transmission offset represented by PmcchOffset at this time is both the transmission offset of the modification period and the transmission offset of the repetition period.
- the PmcchPeriod in the indication information can simultaneously inform the terminal of the period information of the occurrence of the radio frame and/or the subframe carrying the MBMS control channel, and the repetition period of the control signaling carried on the radio frame and/or the subframe of the MBMS control channel.
- Information and modification period information; PmcchOffset in the indication information may simultaneously inform the terminal of the transmission offset information of the radio frame and/or subframe carrying the MBMS control channel and the control signal carried on the radio frame and/or subframe of the MBMS control channel Send offset information.
- the network side may implicitly notify the terminal of the PmcchPeriod by the radioFrameAllocationPeriod according to the multiple relationship between the preset PmcchPeriod and the radioFrameAllocationPeriod, so that the notification of the PmcchPeriod may be omitted, and the multiple relationship may be notified instead.
- Choose the agreed multiple relationship so that you don't have to notice the multiple relationship.
- the network side can implicitly notify the terminal of the PmcchOffset through the radioFrameAllocationOffset according to the multiple relationship between the preset PmcchOffset and the radioFrameAllocationOffset, so that the notification of the PmcchOffset can be omitted.
- the notification of the PmcchOffset can be omitted.
- the subframe information of the MBMS control channel carrying the MBMS control channel in the radio frame carrying the MBMS control channel may be indicated to the terminal by means of a bitmap, or a manner indicating a subframe number, or a fixed subframe.
- the radio frame carrying the MBMS control channel may be a non-MBSFN radio frame, and the radio frame used to carry the MBMS control channel only needs to satisfy the following conversion relationship:
- the SFN indicates the system frame number, and the value is 0 or a positive integer. However, since the largest system frame number in LTE is specified as 1023, the SFN can take an integer from 0 to 1023.
- PmcchPeriod represents the radio frame carrying the MBMS control channel and/or Or the period information of the subframe;
- the terminal obtains the radio frame carrying the MBMS control channel according to the indication information, that is, the radio frame corresponding to the SFN that satisfies the above conversion relationship.
- the period PmcchPeriod of the radio frame and/or subframe carrying the MBMS control channel is the control signaling carried on the radio frame and/or subframe of the MBMS control channel.
- the repetition period of the radio frame and/or subframe carrying the MBMS control channel, PmcchOffset is the transmission offset of the control signaling carried on the radio frame and/or subframe of the MBMS control channel.
- the eNB can inform the terminal of the period in which the radio frame and/or the subframe of the MBMS control channel occurs by using the PmcchPeriod, and the repetition period of the control signaling carried on the radio frame and/or the subframe of the MBMS control channel; by PmcchOffset
- the transmission offset of the radio frame and/or subframe carrying the MBMS control channel and the transmission offset of the control signaling carried on the radio frame and/or subframe of the MBMS control channel may be informed.
- PmcchPeriod can be used to describe the repetition period of the control signaling carried on the radio frame and/or the subframe of the MBMS control channel, or can also be used to describe the bearer in the MBMS control channel.
- the PmcchPeriod parameter can only represent one of the above meanings, as follows:
- the modification period can be indirectly notified by a repeating period.
- the indirect notification can use a multiple relationship, which can be fixed by the protocol, configured, and notified to the terminal.
- the agreed modification period is 4 times of the repetition period, and the start position of the repetition period and the start position of the modification period may be kept aligned or not.
- the start position of the modification period is not required to be notified; It is necessary to notify the start position of the modification period when it is not aligned.
- the transmission offset indicated by PmcchOffset at this time is both the transmission offset of the modification period and the transmission offset of the repetition period.
- the repetition period can be indirectly notified by the tampering period.
- the indirect notification can use a multiple relationship, which can be fixed by the protocol, or configured, and notified to the terminal.
- the agreed repetition period is 0.25 times the ⁇ ⁇ tampering period, and the start of the repeat period and the start position of the modification period may or may not be aligned.
- Start position need to notify the start position of the modification period when it is not aligned.
- the transmission offset represented by PmcchOffset at this time is both the transmission of the modification period. Offset, which is also the transmit offset of the repeat period.
- the PmcchPeriod in the indication information can simultaneously inform the terminal of the period information of the occurrence of the radio frame and/or the subframe carrying the MBMS control channel, and the repetition period of the control signaling carried on the radio frame and/or the subframe of the MBMS control channel.
- Information and modification period information; PmcchOffset in the indication information may simultaneously inform the terminal of the transmission offset information of the radio frame and/or subframe carrying the MBMS control channel and the control signal carried on the radio frame and/or subframe of the MBMS control channel Send offset information.
- the subframe information of the MBMS control channel carrying the MBMS control channel in the radio frame carrying the MBMS control channel may be indicated to the terminal by means of a bitmap, or a manner indicating a subframe number, or a fixed subframe.
- the above high layer signaling may be a system broadcast message, or a radio resource control RRC (Radio Resource Control) message, or dedicated signaling.
- RRC Radio Resource Control
- Step 202 The terminal parses the radio frame and/or the subframe that carries the MBMS control channel according to the obtained indication information of the radio frame and/or the subframe, and reads the MBMS control signaling from the radio frame and/or the subframe.
- the terminal receives and parses the indication information according to the agreement with the sender, and then receives the radio frame and/or subframe that carries the MBMS control channel according to the indication information.
- control signaling 7 is carried on the MCH
- H does not have a radio frame for 10 ms, and each radio frame contains 10 subframes, and one subframe has a duration of 1 ms.
- the network side configures a corresponding radio frame carrying the MBMS for the MBMS service in the MBSFN area according to the information such as the MBMS service volume in the MBSFN area.
- the MBMS radio frame carried by a certain MBSFN area satisfies:
- SIB System Information Block
- the offset information is 40ms (4 radio frames).
- the eNB may further indicate, to the terminal, subframe information that carries the MBMS control channel, and the terminal reads the MBMS control signaling from the corresponding subframe in the radio frame that carries the MBMS control channel.
- the MBMS control signaling can be in any subframe within the MBSFN radio frame, but there are some agreed conditions in the actual application, for example, the agreed condition is: When the MBMS control channel is agreed to be carried only in the system configured MBSFN wireless In-frame for carrying When the MBMS service is on a subframe, then the MBMS control channel can only be carried on the MBMS subframe that the system has allocated.
- the agreed condition is: When the MBMS control channel is agreed to be carried only in the system configured MBSFN wireless In-frame for carrying When the MBMS service is on a subframe, then the MBMS control channel can only be carried on the MBMS subframe that the system has allocated.
- a control information including a Radio Network Temporary Identifier (RNTI) for identifying an MBMS control channel is carried in a control domain of the subframe, and the MBMS control signaling is carried.
- the control information of the MBMS control channel further indicates information such as the specific location of the MBMS control channel in the data domain.
- the terminal detects the control information of the RNTI for identifying the MBMS control channel by detecting the control domain information of the subframe in the radio frame that carries the MBMS control channel, and then parses the control information of the MBMS control channel, and further determines the MBMS control according to the control information.
- the specific location of the channel where it receives MBMS control signaling and resolves MBMS control signaling.
- the eNB indicates the subframe information carrying the MBMS control channel to the terminal in a manner of a bitmap, a manner indicating a subframe number, or a fixed subframe.
- bitmap method such as: 1 Obit is used to describe the subframe used to carry the MBMS control channel in the radio frame specified in FIG. 3, and assumed to be carried on subframe #1 and subframe #2 shown in FIG.
- the signaling of the bitmap is "0110000000", and each bit in the signaling corresponds to each subframe from #0 to #9, and the corresponding bit is set to "1", indicating that the subframe carries the MBMS control channel.
- the method of indicating the subframe number that is, considering that each radio frame includes 10 subframes, 4 bits are required to distinguish that each subframe carries an MBMS control channel, for example: "0001" indicates that the subframe #1 carries the MBMS control channel, " 0010” indicates that the MBMS control channel is carried on subframe #2.
- the command is "0001, 0010" to inform the terminal.
- the so-called fixed subframe mode that is, in the radio frame that has been indicated to carry the MCCH, the MCCH is fixedly carried by one or more subframes, which is the default for both the eNB and the terminal. For example: carried by fixed subframe #1, then on subframe #1 within the radio frame indicated to carry the MCCH Host the MCCH. This eliminates the signaling overhead of indicating the location of the subframe.
- the configurations of PmcchPeriod and PmcchOffset are relatively flexible, which provides flexibility for the eNB to send MBMS control channels, and can flexibly select radio frames to facilitate scheduling by the eNB.
- the problem of signaling overhead needs to be considered, which imposes certain restrictions on the radio frame selection of the MBMS control channel.
- PmcchOffset in the embodiment of the present invention, generally, any positive integer smaller than PmcchPeriod can be taken.
- the values of the PmcchOffset and the radioFrameAllocationOffset may be agreed to be the same, so that the value of the PmcchOffset is not notified to the terminal, and the terminal according to the agreement According to the value of radioFrameAllocationOffset, the value of PmcchOffset can be directly known.
- the signaling overhead can be reduced, and only the PmcchPeriod is notified to the terminal in the system broadcast message, and the PmcchOffset implicitly notifies the notification through the radioFrameAllocationOffset.
- PmcchPeriod can also specify a fixed value through the protocol, which can also reduce the signaling overhead.
- PmcchPeriod can also establish a correspondence with radioFrameAllocationPeriod, implicit notification via radioFrameAllocationPeriod.
- PmcchPeriod and radioFrameAllocationPeriod are in multiples (PmcchPeriod is 4 times that of radioFrameAllocationPeriod), so that only radioFrameAllocationPeriod and multiples relationship "4" are required, and the terminal can know the value of PmcchPeriod indirectly through radioFrameAllocationPeriod.
- the MBMS control signaling may be set to be updated in each PmcchPeriod, or may be updated after several consecutive PmcchPeriods are set.
- the MBMS control signaling is set to a fixed period, preferably 320 ms, 640 ms, 160 ms, and the like. If the MBMS control signaling is set to send the same content in consecutive repeating cycles, the update is not allowed, Several consecutive repetition periods are defined as one modification period, and updates can only occur when the modification period arrives.
- the repetition period of MBMS control signaling is 320ms, and the period of ⁇ ' tampering is 1280ms, so that MBMS control signaling is not allowed to be updated in four consecutive repetition periods. Since the repetition period information of the MBMS control signaling is carried on the system broadcast message, it is preferable to set the repetition period and the modification period of the control signaling on the radio frame and/or the subframe that carries the MBMS control channel and the system broadcast respectively. The repetition period of the message and the modification period are consistent; or the modification period of the control signaling on the radio frame and/or the subframe that carries the MBMS control channel is consistent with the modification period of the system broadcast message.
- the information on the system broadcast message is used to indicate the repetition period or the modification period of the bearer MBMS control channel. Change in time.
- the embodiment in which the control signaling is carried on the DL-SCH is substantially similar to the embodiment in which the control signaling is carried on the MCH, and details are not described herein again. The difference is that the control signaling is carried on the DL-SCH.
- the present invention also provides a transmission system for MBMS control signaling.
- the system is composed of a connected network side 10 and a terminal 20.
- the network side 10 is configured to send, by using the high layer signaling, the indication information of the radio frame and/or the subframe that carries the MBMS control channel to the terminal 20, and send the MBMS to the terminal 20 by using the radio frame and/or the subframe that carries the MBMS control channel. Control signaling.
- the terminal 20 is configured to parse a radio frame and/or a subframe that carries an MBMS control channel according to the obtained indication information of the radio frame and/or the subframe, and read the MBMS control signaling from the radio frame and/or the subframe.
- the MBMS control channel referred to in the present invention may be: MCCH, or P-MCCH, or S-MCCH, or MICH, or MTCH.
- the indication information of the radio frame and/or the subframe that carries the MBMS control channel includes at least one of the following: including the period information and the transmission offset information of the radio frame and/or the subframe that carries the MBMS control channel; including the bearer in the MBMS control. Transmission offset information of control signaling on radio frames and/or subframes of the channel; further comprising repetition period information and modification period information of control signaling carried on radio frames and/or subframes of the MBMS control channel;
- the indication information of the radio frame and/or subframe carrying the MBMS control channel further includes: an MBSFN radio frame period and an MBSFN radio frame offset.
- the present invention eliminates the randomness of sending MBMS control signaling on the system side and receiving MBMS control signaling by the terminal, reduces signaling overhead of the terminal, and facilitates power saving of the terminal.
- the indication information of the radio frame and/or the subframe of the MBMS control channel can be flexibly configured, which provides flexibility for the network side to transmit the MBMS control signaling.
- the subframes carrying the MBMS control channel can be flexibly selected in the present invention, which facilitates the scheduling on the network side. .
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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KR1020117019780A KR101350962B1 (ko) | 2009-04-03 | 2010-03-25 | 멀티미디어 브로드캐스트 멀티캐스트 서비스 제어 신호의 전송 방법 및 시스템 |
JP2012501124A JP5461681B2 (ja) | 2009-04-03 | 2010-03-25 | マルチメディアブロードキャスト/マルチキャストサービス制御シグナリングの伝送方法および伝送システム |
EP10758027.6A EP2416536B1 (en) | 2009-04-03 | 2010-03-25 | Transmission method and system for multimedia broadcast multicast service control signaling |
MX2011010028A MX2011010028A (es) | 2009-04-03 | 2010-03-25 | Metodo y sistema para transmitir una señalizacion de control de servicio de difusion multiple de transmision multimedia. |
US13/202,745 US8582487B2 (en) | 2009-04-03 | 2010-03-25 | Method and system for transmitting a multimedia broadcast multicast service control signaling |
HK12104408.4A HK1163972A1 (en) | 2009-04-03 | 2012-05-07 | Transmission method and system for multimedia broadcast multicast service control signaling |
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CN2009100811655A CN101854589B (zh) | 2009-04-03 | 2009-04-03 | 多媒体广播多播业务控制信令的传输方法和系统 |
CN200910081165.5 | 2009-04-03 |
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EP (1) | EP2416536B1 (zh) |
JP (1) | JP5461681B2 (zh) |
KR (1) | KR101350962B1 (zh) |
CN (1) | CN101854589B (zh) |
HK (1) | HK1163972A1 (zh) |
MX (1) | MX2011010028A (zh) |
WO (1) | WO2010111925A1 (zh) |
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CN101854589A (zh) | 2010-10-06 |
US20110305186A1 (en) | 2011-12-15 |
EP2416536A1 (en) | 2012-02-08 |
CN101854589B (zh) | 2013-12-04 |
US8582487B2 (en) | 2013-11-12 |
JP2012522413A (ja) | 2012-09-20 |
JP5461681B2 (ja) | 2014-04-02 |
KR20110118695A (ko) | 2011-10-31 |
HK1163972A1 (en) | 2012-09-14 |
EP2416536B1 (en) | 2013-10-23 |
MX2011010028A (es) | 2011-10-11 |
KR101350962B1 (ko) | 2014-01-23 |
EP2416536A4 (en) | 2012-07-11 |
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