WO2016074196A1 - 多媒体广播组播的通信方法、装置和系统 - Google Patents
多媒体广播组播的通信方法、装置和系统 Download PDFInfo
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- WO2016074196A1 WO2016074196A1 PCT/CN2014/091014 CN2014091014W WO2016074196A1 WO 2016074196 A1 WO2016074196 A1 WO 2016074196A1 CN 2014091014 W CN2014091014 W CN 2014091014W WO 2016074196 A1 WO2016074196 A1 WO 2016074196A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/22—Performing reselection for specific purposes for handling the traffic
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- 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
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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
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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
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a communication method, apparatus, and system for multimedia broadcast multicast.
- the multimedia broadcast multicast service is a communication technology that simultaneously transmits the same data to multiple user equipments (English: user equipment, abbreviated as: UE) through multiple base stations.
- the MBMS communication technology is mainly applied to a wireless communication network using long term evolution (LTE) technology.
- LTE long term evolution
- the MBMS service data is transmitted through a multimedia broadcast multicast service single frequency network (MBSFN) sub-frame.
- MMSFN multimedia broadcast multicast service single frequency network
- the data of the service is referred to as service data
- the data transmitted by the MBSFN is referred to as the service data of the MBMS
- the service to which the service data of the MBMS belongs is the service of the MBMS.
- the part of the service data may be transferred to other transmission methods, for example, unicast. To this end, it is necessary to notify the UE in advance to suspend transmission of the above part of the service data in the manner of MBSFN.
- the embodiment of the invention provides a multimedia broadcast multicast communication method, device and system for improving the timeliness of notifying the UE to suspend transmission of service data in the manner of MBSFN.
- an embodiment of the present invention provides a multimedia broadcast multicast communication method, including:
- the base station receives the first indication information at the first time, where the first indication information is used to indicate that the suspension is excessive
- the medium broadcasts the multicast service MBSFN to transmit the service data.
- the base station sends the second indication information to the user equipment UE according to the first indication information, so that the UE stops at the second time according to the second indication information.
- the MBSFN mode transmits the service data; wherein the first time is earlier than the second time, and the first time and the second time are less than one multicast control channel MCCH modification period.
- the sending, by the base station, the second indication information to the user equipment UE according to the first indication information including: the base station, according to the first indication information,
- the second access information is carried in the media access control MAC data packet sent to the UE, and the second indication information is sent to the UE.
- the carrying of the first indication information by the MAC data packet can avoid being restricted by the modification period of the MCCH, and can enable the network side to send the first indication information to the user equipment in time.
- the second indication information is carried in a MAC header MAC-header of the MAC data packet.
- the use of the existing MAC header to carry the first indication information can be compatible with the existing MAC protocol, and the modification to the existing system is small.
- the second indication information is carried in a MAC subheader corresponding to the service data in the MAC-header.
- the use of the MAC header corresponding to the service in the existing MAC header to carry the first indication information may be compatible with the existing MAC protocol, and the modification to the existing system is small.
- the first time includes: a first multicast transmission channel scheduling a periodic MSP; or, a first time point; or a first transmission time interval TTI; or, a first subframe.
- the second time includes: a second MSP; or, Two time points; or, a second TTI; or a second subframe.
- the different forms of the first time and the second time described above make the system more flexible for setting the time.
- the first indication information is further used to indicate the second time.
- Carrying the second time in the first indication information may enable the eNB to dynamically learn when to stop transmitting the service data in the MBSFN manner, so that the system is more flexible and can be applied to different scenarios and network environments.
- the first indication information includes a first index and a second index, where the second time is the first The MSP indicated by the second index in the MCCH modification period corresponding to the index.
- an MSP By specifying an MSP to terminate the transmission of service data in the MBSFN manner, it is compatible with the existing MBMS protocol and has less impact on the system.
- the first indication information is further used to indicate a notification time, where The notification time is earlier than the second time and later than the first time; the sending, by the base station, the second indication information to the user equipment UE according to the first indication information, The information sends the second indication information to the UE at the notification time.
- the second indication information includes the second time.
- Carrying the second time in the second indication information may enable the UE to dynamically learn when to stop transmitting the service data in the MBSFN manner, so that the system is more flexible and can be applied to different scenarios and network environments.
- the first indication information is sent by the multicast control entity MCE of.
- the MCE notifies the base station that the existing network element can be utilized to the maximum extent, and the impact on the live network is small.
- the embodiment of the present invention provides a multimedia broadcast multicast communication method, including: the multicast control entity MCE determines to terminate the transmission of the multimedia broadcast multicast service MBSFN in the MBSFN area of the multimedia broadcast multicast single frequency network. Data; the MCE sends indication information at the first time To the base station, to enable the base station to notify the user equipment that the UE transmits the service data in the MBSFN manner at a second time; wherein the first time is earlier than the second time, the first time is The second time is less than one multicast control channel MCCH modification period.
- the method further includes: the MCE receiving the base station
- the sent notification message is used to indicate that congestion occurs in the MBSFN area.
- the first time includes: a first multicast transmission channel scheduling period MSP; or, a first time point Or, the first transmission time interval TTI; or, the first subframe.
- the second time includes: a second MSP; or a second time point; Or, the second TTI; or, the second subframe.
- the indication information is further used to indicate the second time.
- the indication information includes a first index and a second index, where the second time is the first index corresponding to The MSP of the second index indicated during the MCCH modification period.
- the indication information is further used to indicate a notification time, so that the base station Notifying the UE to transmit the service data in the MBSFN manner at the second time in the notification time; wherein the notification time is earlier than the second time and later than the first time.
- the embodiment of the present invention provides a base station, including: a receiving unit, configured to receive first indication information at a first time, where the first indication information is used to indicate that the multimedia broadcast multicast service MBSFN is suspended. And a sending unit, configured to send the second indication information to the user equipment UE according to the first indication information, so that the UE stops transmitting in the MBSFN manner according to the second indication information at a second time Business data; wherein the first time is earlier than the second time Meanwhile, the first time and the second time are less than one multicast control channel MCCH modification period.
- the sending unit is specifically configured to: according to the first indication information, control a MAC data packet by using media access sent to the UE Carrying the second indication information, and sending the second indication information to the UE.
- the second indication information is carried in a MAC header MAC-header of the MAC data packet.
- the second indication information is carried in a MAC subheader corresponding to the service data in the MAC-header.
- the first time includes: a first multicast transmission channel scheduling period MSP Or, the first time point; or, the first transmission time interval TTI; or, the first subframe.
- the second time includes: a second MSP; or, a second time Point; or, the second TTI; or, the second subframe.
- the first indication information is further used to indicate the second time.
- the first indication information includes a first index and a second index, where the second time is the first The MSP indicated by the second index in the MCCH modification period corresponding to the index.
- the first indication information is further used to indicate a notification time, where The sending time is earlier than the second time and later than the first time; the sending unit is configured to send the second indication information to the UE at the notification time according to the first time information.
- the second indication information includes the second time.
- the first indication information is sent by a multicast control entity (MCE).
- MCE multicast control entity
- an embodiment of the present invention provides a multicast control entity (MCE), including: a determining unit, configured to determine to terminate service data in a manner of terminating a multimedia broadcast multicast service MBSFN in a MBSFN area of a multimedia broadcast multicast single frequency network; a sending unit, configured to send the indication information to the base station at the first time, to enable the base station to notify the user equipment that the UE transmits the service data in the manner of the MBSFN at a second time; wherein the first time is earlier than The second time is less than one multicast control channel MCCH modification period between the first time and the second time.
- MCE multicast control entity
- the method further includes: a receiving unit, configured to receive a notification message sent by the base station, where the notification message is used to indicate that congestion occurs in the MBSFN area.
- the first time includes: a first multicast transmission channel scheduling period MSP; or, a first time Point; or, the first transmission time interval TTI; or, the first subframe.
- the second time includes: a second MSP; or a second time point; Or, the second TTI; or, the second subframe.
- the indication information is further used to indicate the second time.
- the indication information includes a first index and a second index, where the second time is the first index corresponding to The MSP of the second index indicated during the MCCH modification period.
- the indication information is further used to indicate a notification time, so that the base station Notifying the UE to transmit the service data in the MBSFN manner at the second time in the notification time; wherein the notification time is earlier than the second time and later than the first time.
- an embodiment of the present invention provides a communication system, including: the base station as described above; and the MCE as described above.
- the method further includes: the UE, configured to receive the second indication information.
- an embodiment of the present invention provides a user equipment, including: a receiving unit, configured to receive a MAC data packet sent by a base station, and an acquiring unit, configured to acquire first indication information, where the first indication is obtained from a MAC data packet.
- the information is used to indicate that the service data is to be transmitted in the manner of MBSFN, and the execution unit is configured to stop receiving the service data in the manner of MBSFN according to the first indication information.
- the first indication information further includes a second time, where the first indication information is used to indicate that the MBSFN is terminated at the second time
- the method transmits the service data.
- the second time includes: a second MSP; or a second time point; or a second TTI; or a second Subframe.
- the executing unit is further configured to initiate a setup bearer, where the bearer is used for unicast The way to transmit the business data.
- the first indication information is carried in a MAC-header of the MAC data packet.
- the first indication information is sent to the base station at the first time, so that the base station notifies the user equipment to stop transmitting the service data in the MBSFN manner at the second time, because the first time and the second time are less than one multicast control channel.
- the modification period thus improving the timeliness of notifying the user equipment to suspend the transmission of service data in the manner of MBSFN.
- 3GPP Third Generation Partnership Project
- 3GPP Third Generation Partnership Project
- 3GPP related organization is referred to as a 3GPP organization.
- a wireless communication network is a network that provides wireless communication functions.
- the wireless communication network may use different communication technologies, such as, for example, code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (English) : frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (English: single carrier fDMA, referred to as: SC-FDMA) .
- CDMA code division multiple access
- TDMA time division multiple access
- FDMA frequency division multiple access
- OFDMA orthogonal frequency-division multiple access
- SC-FDMA single carrier frequency division multiple access
- a wireless communication network defined by a 3GPP organization is generally referred to as a 3GPP network
- a wireless communication network defined by a non-3GPP organization is referred to as a non-3GPP network.
- a typical non-3GPP network includes a global interoperability for microwave access (Wimax) network, a CDMA network, and a wireless fidelity (WiFi) network.
- Wimax global interoperability for microwave access
- CDMA compact code division multiple access
- WiFi wireless fidelity
- a typical 2G network includes a GSM/GPRS (Chinese: global system for mobile communications/general packet radio service) network.
- a typical 3G network includes wideband code division multiple access (English: wideband) Code division multiple access (WCDMA) network.
- a typical 4G network includes an LTE network.
- the technical solutions provided by the embodiments of the present invention are applicable to, but not limited to, an LTE network, and may also be used in a 2/3G network or a non-3GPP network.
- User equipment (English: user equipment, abbreviated as UE) is a terminal device, which can be a mobile terminal device or a non-mobile terminal device.
- the device is mainly used to receive or send business data. For example, it has the ability to receive service data transmitted in the form of MBSFN.
- User equipment can be distributed in the network.
- User equipments have different names in different networks, such as: terminals, mobile stations, subscriber units, stations, cellular phones, personal digital assistants, wireless modems, wireless communication devices, handheld devices, knees. Upper computer, cordless phone, wireless local loop station, etc.
- a base station (English: base station, abbreviated as UE) is an access network device that provides wireless communication functions.
- a device providing a base station function in a 2G network includes a base transceiver station (BTS) and a base station controller (English: base station controller, abbreviated as: BSC, providing a base station in a 3G network)
- Functional devices include Node B (English abbreviation: NodeB) and radio network controller (English: radio network controller, RNC for short), the device that provides the function of the base station in the 4G network includes the evolved Node B (English: evolved NodeB: eNB).
- the evolved Node B English: evolved NodeB: eNB
- eNB evolved NodeB
- a multimedia broadcast multicast service single frequency network is a wireless communication network that uses a technology in which a group of cells simultaneously transmit the same waveform in one physical area.
- the MBSFN area (English: MBSFN area) is an area composed of a group of cells that can cooperatively implement MBSFN transmission.
- Multimedia broadcast multicast service A service that simultaneously transmits the same data to multiple user equipments through multiple base stations.
- the transmission of the service data by means of the MBSFN means that the service data is transmitted by means of the MBSFN. Even if a plurality of base stations simultaneously transmit the service data to a plurality of user equipments, it can be understood as a multicast transmission mode.
- a multicast channel (English: multicast channel, MCH for short) is used to transmit the channel of MBMS service data.
- the multicast transmission channel scheduling information (MCH scheduling information, MSI for short) is used to indicate that the service data transmission of each MBMS of the user equipment ends in the first subframe in the MPS.
- Time can be understood based on a broad scope.
- the time in the embodiment of the present invention may include a time point, a transmission time interval (English: transmission time interval, TTI for short), a subframe (English: subframe), and a multicast channel scheduling period (English: multicast channel scheduling period, short for :MSP) and so on.
- the multicast transmission channel scheduling period is a period for scheduling the MCH.
- MBMS control channel (English: MBMS control channel, abbreviated as MCCH), a channel for transmitting control information of MBMS services.
- MCCH MBMS control channel
- the MCCH modification period is a period in which the control information in the MCCH is modified. For example, it can be 5.12 seconds or 10.24 seconds.
- the MBSFN subframe is a subframe for transmitting MBMS service data.
- the multi-cell/multicast coordination entity is used to configure the parameters used by multiple base stations in the MBSFN area to transmit MBMS service data to ensure that all base stations in the unified MBSFN area use the same
- the configuration is to send MBMS business data.
- Media access control (English: medium access control, MAC for short) is a MAC layer data packet.
- the MAC data packet includes a MAC header (English: MAC-header) and one or more MAC SDUs (English full name: service data unit, Chinese: service data unit), and one MAC SDU includes a MAC subheader.
- the M2 interface is an interface between the MCE and the eNB, and is used to transmit an M2 application protocol (M2AP, Chinese: M2 application protocol) message.
- M2AP M2 application protocol
- the mobile management network element (English: mobile management network element, MMNE for short) is a core network device for performing mobility management network on user equipment.
- the mobility management network element includes a GPRS service support node (English: serving GPRS support node, referred to as SGSN).
- the mobility management network element includes a mobility management entity (English: mobility management entity) , referred to as: MME).
- Gateway (English: gateway) is a core network device that transmits user plane data.
- Suspension (English: suspend) can be understood as termination, stop or pause.
- FIG. 1 is a schematic diagram of an MBMS networking structure according to an embodiment of the present invention
- 2-1 is a schematic structural diagram of a MAC data packet according to an embodiment of the present invention.
- FIG. 2-2 is a schematic structural diagram of another MAC data packet according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a MAC sub-head corresponding to a data packet A in a MAC-header according to an embodiment of the present disclosure
- FIG. 4 is a schematic structural diagram of a MAC sub-header corresponding to a new data packet A in a MAC-header according to an embodiment of the present disclosure
- FIG. 5 is a schematic structural diagram of still another MAC data packet according to an embodiment of the present disclosure.
- FIG. 6 is a schematic flowchart diagram of a multimedia broadcast multicast communication method according to an embodiment of the present disclosure
- FIG. 7 is a schematic structural diagram of an eNB according to an embodiment of the present disclosure.
- FIG. 8 is a schematic structural diagram of an MCE according to an embodiment of the present disclosure.
- FIG. 9 is a schematic structural diagram of a UE according to an embodiment of the present invention.
- the network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention.
- the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.
- FIG. 1 exemplarily shows a typical MBMS networking architecture.
- the networking architecture includes:
- Data source used to provide service data to be transmitted to the UE
- Gateway used to transmit service data provided by the data source to the eNB;
- the MME is configured to manage the mobility of the UE, and may also control the eNB and the gateway to create a bearer for transmitting data for the UE.
- MCE configured to configure parameters required for the eNB to transmit the foregoing service data by means of MBSFN.
- Multiple eNBs for transmitting service data provided by the gateway to the UE in an MBSFN manner, or Transmitting service data to the UE in a unicast manner;
- the UE is configured to receive service data sent in an MBSFN manner or receive service data sent in a unicast manner.
- multiple eNBs may be connected to one MCE, and the MCE may configure the multiple eNBs to enable the multiple eNBs to send at the same time.
- the same service data is transmitted in such a manner that MBSFN is implemented to transmit the above service data.
- the UE when the service data sent by the multiple eNBs in the MBSFN manner arrives at the UE, the UE does not need to distinguish which eNB sends the signal, and the signals sent by the multiple eNBs are superimposed at the UE, which can make the signal stronger and reduce.
- the packet error rate for transmitting the service data when the service data sent by the multiple eNBs in the MBSFN manner arrives at the UE, the UE does not need to distinguish which eNB sends the signal, and the signals sent by the multiple eNBs are superimposed at the UE, which can make the signal stronger and reduce.
- the packet error rate for transmitting the service data when the service data sent by the multiple eNBs in the MBSFN manner arrives at the UE, the UE does not need to distinguish which eNB sends the signal, and the signals sent by the multiple eNBs are superimposed at the UE, which can make the signal stronger and reduce.
- the packet error rate for transmitting the service data when the service data sent by the multiple
- the data source may sequentially send the characteristics of the service to be transmitted, the service data rate, the size of the service data volume, and the related information to be sent to the gateway;
- the gateway After receiving the information sent by the data source, the gateway allocates an IP multicast address to each eNB, and transmits the address to the MME and the MCE;
- the MCE allocates air interface resources for the service to be transmitted, and notifies each eNB, and notifies each eNB of the IP multicast address allocated by the gateway;
- Each eNB adds the IP multicast address assigned by the gateway to the corresponding IP multicast group, and updates the reserved subframe according to the air interface resource allocated by the MCE (the reserved subframes are called MBSFN subframes), and these reservations are performed.
- the subframe will be used to transmit the above service data. For example, subframes 2, 7, and 8 in each scheduling period are used as MBSFN subframes.
- the data source sends the service data to the gateway
- the gateway sends the foregoing service data to each eNB by means of IP multicast
- Each eNB sends service data to the UE on the air interface through the MBSFN subframe.
- the service data is sent on the MCH.
- the scheduling period can be divided into fixed durations, and the data source attaches a timestamp to each data packet, and the eNB can map the data packet to the corresponding scheduling period according to the timestamp of the data packet. Packets mapped to the scheduling period N are sent at period N+1.
- the scheduling period here can also be an MSP.
- the number of MBSFN subframes allocated by the MCE for the service data determines the transmission rate of the service data.
- the rate of the service data is high, more MBSFN subframes need to be allocated.
- the rate of the service data is low, fewer MBSFN subframes need to be allocated. Since MBSFN subframes are only used to transmit MBMS service data, considering the resource usage efficiency, allocating more MBSFN subframes will result in waste of resources when the rate of service data becomes lower, so usually not for MBMS service data.
- the MBSFN subframes required to exceed the average rate are allocated. However, when the rate of the MBMS service data becomes higher, the MBSFN subframe cannot accommodate more data, which may result in the discarding of the MBMS service data.
- a part of the MBMS service may be sent to the UE in other manners, for example, in a unicast manner, so that the rate of the service data transmitted by the MBSFN manner matches the number of allocated MBSFN subframes.
- the UE needs to be notified in advance that the service of a certain MBMS will be suspended to transmit its service data in the manner of MBSFN.
- the MCE notifies the eNB, and the eNB notifies the UE that the UE needs to go through at least one MCCH modification period to receive the service data in the MBSFN manner. That is, 5.12 seconds or 10.24 seconds, the situation that the UE cannot be notified in time may occur, and the UE may not be able to initiate the establishment of the unicast bearer in time, resulting in service interruption.
- the indication information may be carried by a MAC data packet carrying service data.
- the limitation of the MCCH modification period can be overcome, and the MCE is reduced.
- the eNB is notified to the UE to terminate the time between receiving the service data in the manner of MBSFN.
- the MCE allocates the subframe 2 and the subframe 7 as the MBSFN subframe in each MSP.
- the first MAC data packet sent by the eNB in the MSP in the subframe 2 includes:
- MAC-header The MAC header of the MAC packet, including the MAC sub-header corresponding to the MSI, MCCH, and packet A of the MAC packet.
- the first field R and the second field R are reserved fields, and the third field E indicates whether the subsequent MAC subheader is followed. If the value is 1, it indicates that the following is still The MAC sub-header, if the value is 0, indicates that the following is not the MAC sub-head.
- the fourth LCID of MSI indicates that the MAC SDU corresponding to the MAC sub-header is an MSI, and the fifth field F indicates the length of the field Length of MSI.
- a value of 0 indicates that the length of the field Length of MSI is 7 bits, and the value is 1, indicating that the length of the field Length of MSI is 15 bits, and the sixth field Length of MSI indicates the length of the MSI part. among them,
- the MAC sub-header corresponding to the MCCH and the related content of the MAC sub-header corresponding to the data packet A may refer to the related content of the MAC sub-header corresponding to the MSI, and details are not described herein.
- MSI Data indicating that Service A and Service B are transmitted at the end of the first subframe within the MSP.
- the field LCID of A indicates that the record corresponds to the data packet A, and the field stop indicates which MBSFN subframe in the MSP ends the transmission of the data packet A; the second one in the MSI Please refer to the contents of the first record for the contents of the record, which will not be described here.
- MCCH Relevant control information for indicating that data of Service A and Service B is transmitted in the manner of MBSFN.
- Packet A used to carry part of the data of Service A.
- the MAC data packet sent by the eNB in the subframe 7 in the MSP includes:
- MAC-header The MAC header of the MAC packet, including the MAC sub-header corresponding to the data packet A and the data packet B included in the MAC data packet.
- the specific content of the MAC subheader can be seen in Figure 2-1. The content of MAC-header is not described here.
- Packet A Used to carry another part of the data of Service A.
- Packet B Used to carry part of the data of Service B.
- FIG. 2-1 and FIG. 2-2 exemplarily show the structure of the MAC data packet, and do not form a limitation on the structure of the MAC data packet.
- the structure of the MAC data packet may be different in different scenarios.
- the data of the service A is to be transmitted in the MBSFN manner.
- the following implementation manners may be used to carry the indication information in the MAC data packet to notify the UE to stop the transmission of the data of the service A in the MBSFN manner:
- Mode 1 The MAC-header of the MAC packet can be modified, and the MAC sub-header corresponding to the packet A is rewritten.
- the reserved field of the MAC subheader of the data packet A can be rewritten.
- the first reserved field R is set to 1, or the second reserved field is set to 1, indicating that the data of the service A carried by the UE data packet A will be terminated by the MBSFN after the next or the Mth MSP.
- the mode is transmitted, where M may be configured in the UE in advance, or may be notified by the eNB, which is not shown in this embodiment of the present invention.
- the first reserved field in the MAC subheader of packet A is set to 1.
- the first reserved field R and the second reserved field R may be combined to indicate which MSP will abort the data of the service A in the manner of MBSFN.
- the first reserved field is set to 1, and the second reserved field is set to 0, indicating that the second MSP after the MSP is suspended to transmit the data of the service A in the manner of MBSFN;
- the field is set to 0, and the second reserved field is set to 1, indicating that the first MSP after the MSP is suspended to transmit the data of the service A in the manner of MBSFN.
- the MAC data packet carrying the data of the service A is included in the MSP, and the MAC data packet of the data of the plurality of the foregoing five MAC data packets, including the service A, may be performed on the MSP.
- the above modifications are to ensure that the UE can correctly obtain the above indication information.
- the MAC-header of the MAC packet can be modified to add 1 packet.
- the corresponding MAC sub-header of the A carries the indication information to indicate that the UE will suspend the transmission of the data of the service A in the manner of MBSFN.
- the Length of A field in the newly added MAC sub-header may be set to 0, indicating that the data of the service A is transmitted in the MBSFN manner after the next MSP or the M-th MSP, where M can be implemented.
- the UE is also configured to notify the UE by the eNB.
- the setting of the reserved field in the mode 1) may be used to notify the UE that the data of the service A is to be transmitted in the MBSFN manner, and details are not described herein.
- the mode 2) of the MAC data packet carrying the data of the service A in the MSP may be modified to ensure that the UE can correctly obtain the foregoing indication information.
- a MAC CE (English: control element) may be added to the MAC packet to carry the foregoing indication information, and the UE is instructed to suspend the transmission of the data of the service A in the MBSFN manner.
- the indication information may be added after the MSI part of the MAC data packet, and the specific format of the indication information is not limited. It is understood by those skilled in the art that the indication information part may also be added after the MCCH part or after the data packet A part, and no limitation is made here. Since the indication information part is added to the MAC data packet, those skilled in the art understand that it is necessary to add a MAC sub-header corresponding to the indication information in the MAC-header.
- the UE Since the MAC data packet is transmitted in each MBSFN subframe in the MSP, and the modification of the MAC data packet is not restricted by the modification period of the MCCH, the UE is notified by the MCCH to suspend the transmission of the service data in the MBSFN manner.
- the MAC data packet is used to notify the UE to be more flexible and timely. For example, when the service data rate is to be suddenly increased in the next MSP, the foregoing indication information may be carried in the MAC packet of the current MSP, and the MBSFN may be suspended in the next MSP.
- the transmission of the service data makes the data transmission of the MBSFN mode more flexible and efficient, and can cope with the sudden increase of the service data rate, avoiding data discarding caused by the sudden increase of the service data rate, and ensuring the user experience.
- the above describes exemplarily by indicating that the UE will suspend transmission of the service data in the MBSFN manner by the MAC packet carrying indication information.
- the MCE may send a notification to the eNB, and then the eNB sends the indication information to the UE through the MAC data packet.
- the indication information that the MCE sends to the eNB may be used as the first indication information, and the indication information that is sent by the eNB to the UE by using the MAC data packet is used as the second indication information.
- FIG. 6 shows a communication method of multimedia broadcast multicast, which is used to implement indication information for carrying in the MBSFN to stop the transmission of service data to the UE by means of the MAC data packet.
- the MCE determines to suspend the data of the service A in the MBSFN manner in the MBSFN area.
- the MCE sends the first indication information to the eNB.
- the first indication information is used to indicate that the data of the service A is suspended in the manner of the multimedia broadcast multicast service MBSFN.
- the eNB sends the second indication information to the UE according to the first indication information.
- the second indication information is used to indicate that the data of the service A is to be transmitted in the manner of MBSFN.
- the UE interacts with the data source to establish a bearer, and transmits the data of the service A in a unicast manner.
- the MCE may decide to suspend the transmission of the data of the service A in the MBSFN manner according to the pre-configuration or the congestion status in the MBSFN area.
- the MCE may receive the notification sent by the eNB before the step 101, where the notification is used to indicate that congestion occurs in the MBSFN area, that is, the MBSFN subframe capacity allocated by the MCE for transmitting the MBMS cannot meet the MBMS service. Capacity requirements for transmission.
- the MCE may send the first indication information to all the eNBs in the MBSFN area to ensure that the eNB that transmits the data of the service A performs corresponding actions according to the first indication information.
- the MCE may carry the first indication information by using a message of the M2 interface, for example, an MBMS scheduling information message.
- the time at which the MCE sends the first indication information to the eNB may be referred to as the first time
- the time at which the data of the service A is transmitted in the MBSFN manner is referred to as the second time.
- the first time and the second time may be based on a broad understanding, for example, may be a certain time point, some MSP, a TTI, a subframe, etc.
- the first indication information is further used to indicate the second time, for example, carrying the cell indicating the second time.
- the first indication information may carry the first index and the second index.
- the first index is used to indicate the MCCH modification period
- the second index is used to indicate the MSP in the MCCH modification period, so that a certain MSP in a certain MCCH modification period can be determined by using the first index and the second index.
- the first indication information may further include a notification time, which is used to indicate when the eNB notifies the UE, to ensure that multiple eNBs can simultaneously send the second indication information to the UE.
- a notification time which is used to indicate when the eNB notifies the UE, to ensure that multiple eNBs can simultaneously send the second indication information to the UE.
- the eNB sends the second indication information to adopt the foregoing manner of carrying the indication information by using the MAC data packet.
- the indication information is carried in the MAC sub-head corresponding to the data packet A, as shown in FIG.
- the MAC sub-header corresponding to the added data packet A carries the indication information, and the indication information is added in the MAC data packet to carry the indication information, as shown in FIG. 5 , and details are not described herein.
- the second indication information may further include a second time.
- the UE may receive the data of the service A in the MBSFN manner at the second time according to the previous configuration or the notification of the eNB.
- the network can stop transmitting the data of the service A in the MBSFN manner on the second time, and on the other hand, the UE can stop receiving the data of the service A in the MBSFN manner in the second time, so that the network side and the UE can access the data of the service A.
- the transmission process is synchronized, so that the network side can successfully suspend the data of the service A in the MBMS mode.
- the second time and the first time may be less than one MCCH modification period, and the UE is notified by the MCCH to stop the transmission of the service A data in the MBSFN manner, which is more flexible and timely.
- the UE can establish a bearer with the network, so that the data of the service A can be continuously received in the unicast manner after the second time, and the service is guaranteed.
- the continuity of A is guaranteed.
- the eNB may include a receiving unit and a sending unit.
- the receiving of the first indication information in step 102 is implemented by the receiving unit
- the sending of the second indication information in step 103 is implemented by the transmitting unit.
- the functions of the receiving unit and the transmitting unit may be implemented by a transceiver.
- the eNB may include a processor and a memory.
- the memory is used to store code that implements the functions of the receiving unit and the transmitting unit, and the processor can execute the code stored in the memory to implement the functions of the receiving unit and the transmitting unit.
- the MCE may include a determining unit and a transmitting unit.
- the MCE may further include a receiving unit, configured to receive a notification message sent by the eNB to indicate that the MBSFN area sends congestion.
- the determining unit may be implemented by a processor, and the sending unit may be implemented by a transmitting circuit or a communication circuit such as a network card, and the receiving unit may be implemented by a receiving circuit or a communication circuit such as a network card.
- the MCE can include a processor and a memory.
- the memory is used to store code implementing the functions of the determining unit, the transmitting unit and the receiving unit, and the processor may execute the code stored in the memory to implement the functions of the determining unit, the transmitting unit and the receiving unit.
- the UE may include a receiving unit and a sending unit.
- the receiving of the second indication information in step 103 can be implemented by the receiving unit, and the request for sending the bearer setup is implemented by the sending unit.
- the receiving unit and the sending unit can be implemented by a transceiver.
- the UE may include a processor and a memory.
- the memory is used to store code that implements the functions of the receiving unit and the transmitting unit, and the processor can execute the code stored in the memory to implement the functions of the receiving unit and the transmitting unit.
- the process shown in FIG. 6 can be implemented by modifying the MCE, the eNB, and the UE, that is, the service data can be suspended in the MBSFN manner within a duration of the modification period of less than one MCCH, thereby improving the flexibility of data transmission. Can successfully cope with the network impact caused by the sudden increase in business data rate.
- information and signals can use any technical method (technology Techniques) to indicate, for example, data, instructions, commands, information, signals, bits, symbols, and chips can pass voltage, Current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination of the above.
- a general purpose processor may be a microprocessor.
- the general purpose processor may be any conventional processor, controller, microcontroller, or state machine.
- the processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration. achieve.
- the steps of the method or algorithm described in the embodiments of the present invention may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
- the software unit can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art.
- the storage medium can be coupled to the processor such that the processor can read information from the storage medium and can write information to the storage medium.
- the storage medium can also be integrated into the processor.
- the processor and the storage medium can be disposed in the ASIC, and the ASIC can be disposed in the user equipment. Alternatively, the processor and the storage medium may also be disposed in different components in the user device.
- the above-described functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions may be stored on a computer readable medium or transmitted as one or more instructions or code to a computer readable medium.
- Computer readable media includes computer storage media and communication media that facilitates the transfer of computer programs from one place to another.
- the storage medium can be any available media that any general purpose or special computer can access.
- Such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other device or data structure that can be used for carrying or storing Other media that can be read by a general purpose or special computer, or a general purpose or special processor.
- any connection can be appropriately defined as a computer readable medium, for example, if the software is from a website site, server or other remote source through a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or wirelessly transmitted in, for example, infrared, wireless, and microwave, is also included in the defined computer readable medium.
- DSL digital subscriber line
- the disks and discs include compact disks, laser disks, optical disks, DVDs, floppy disks, and Blu-ray disks. Disks typically replicate data magnetically, while disks typically optically replicate data with a laser. Combinations of the above may also be included in a computer readable medium.
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Abstract
本发明涉及一种多媒体广播组播的通信方法、装置和系统。该方法包括:基站在第一时间接收第一指示信息,该第一指示信息用于指示中止以多媒体广播组播业务MBSFN的方式传输业务数据;该基站根据第一指示信息发送第二指示信息至用户设备UE,以使该UE根据第二指示信息在第二时间中止以MBSFN的方式传输业务数据;其中,第一时间早于第二时间,第一时间与第二时间之间小于一个多播控制信道MCCH修改周期。由于第一时间与第二时间之间小于一个多播控制信道的修改周期,因此提高了通知用户设备中止以MBSFN的方式传输业务数据的及时性。
Description
本发明涉及通信技术领域,特别是涉及一种多媒体广播组播的通信方法、装置和系统。
多媒体广播组播业务(英文:multimedia broadcast multicast service,简称:MBMS)是一种通过多个基站同时向多个用户设备(英文:user equipment,简称:UE)发送相同数据的通信技术。该MBMS的通信技术主要应用于应用长期演进(英文:long term evolution,简称LTE)技术的无线通信网络。MBMS的业务数据通过多媒体广播多播单频网(英文:multimedia broadcast multicast service single frequency network,简称:MBSFN)子帧进行传输
一般,将业务的数据称为业务数据,将以MBSFN的方式传输的数据称为MBMS的业务数据,将以MBMS的业务数据所属的业务成为MBMS的业务。当MBMS的业务数据的流量大于MBSFN子帧所能承载的流量时,会将部分的MBMS的业务数据丢弃。
为了避免发生MBMS的业务数据被丢弃的情况,可以通过将部分业务数据转移至其他传输方式,例如单播的方式,进行传输。为此,需要提前通知UE将中止以MBSFN的方式传输上述部分业务数据。
目前,提前通知UE的方案无法及时通知UE。
发明内容
本发明实施例提供一种多媒体广播组播的通信方法,装置和系统,用以提高通知UE将中止以MBSFN的方式传输业务数据的及时性。
第一方面,本发明实施例提供一种多媒体广播组播的通信方法,包括:
基站在第一时间接收第一指示信息,所述第一指示信息用于指示中止以多
媒体广播组播业务MBSFN的方式传输业务数据;所述基站根据所述第一指示信息发送第二指示信息至用户设备UE,以使所述UE根据所述第二指示信息在第二时间中止以所述MBSFN的方式传输所述业务数据;其中,所述第一时间早于所述第二时间,所述第一时间与所述第二时间之间小于一个多播控制信道MCCH修改周期。
结合第一方面,在第一种可能的实现方式中,所述基站根据所述第一指示信息发送第二指示信息至用户设备UE,包括:所述基站根据所述第一指示信息,通过在发送至所述UE的媒体接入控制MAC数据包中携带所述第二指示信息,发送所述第二指示信息至所述UE。
通过MAC数据包携带第一指示信息可以避免受到MCCH的修改周期的限制,可以使得网络侧能够及时将第一指示信息发送至用户设备。
结合第一方面的第一种可能的实现方式,在第二种可能的实现方式中,所述第二指示信息被携带在所述MAC数据包的MAC头MAC-header中。
利用现有的MAC头携带第一指示信息可以兼容现有的MAC协议,对现有系统的改动较小。
结合第一方面的第二种可能的实现方式,在第三种可能的实现方式中,所述第二指示信息被携带在所述MAC-header中与所述业务数据对应的MAC子头中。
利用现有的MAC头中与所述业务对应的MAC子头携带第一指示信息可以兼容现有的MAC协议,对现有系统的改动较小。
结合第一方面、或者第一方面的第一种至第三种可能的实现方式中的一种,在第四种可能的实现方式中,所述第一时间包括:第一组播传输信道调度周期MSP;或者,第一时间点;或者,第一发送时间间隔TTI;或者,第一子帧。
结合第一方面、或者第一方面的第一种至第四种可能的实现方式中的一种,在第五种可能的实现方式中,所述第二时间包括:第二MSP;或者,第二时间点;或者,第二TTI;或者,第二子帧。
上述第一时间和第二时间的不同形式,使得系统对于时间的设置更为灵活。
结合第一方面的第四种可能的实现方式,在第六种可能的实现方式中,所述第一指示信息还用于指示所述第二时间。
在第一指示信息中携带第二时间可以使得eNB动态获知何时中止以MBSFN的方式传输业务数据,使得系统更加灵活,能适用于不同的场景和网络环境。
结合第一方面的第六种可能的实现方式,在第七种可能的实现方式中,所述第一指示信息包括第一索引和第二索引;其中,所述第二时间为所述第一索引对应的MCCH修改周期内的所述第二索引指示的MSP。
通过索引指定某个MSP中止以MBSFN的方式传输业务数据,能够兼容现有的MBMS的协议,对系统影响较小。
结合第一方面、或者第一方面的第一种至第七种可能的实现方式中的一种,在第八种可能的实现方式中,所述第一指示信息还用于指示通知时间,其中所述通知时间早于所述第二时间且晚于所述第一时间;所述基站根据所述第一指示信息发送第二指示信息至用户设备UE包括:所述基站根据所述第一时间信息在所述通知时间发送所述第二指示信息至所述UE。
通过下发通知时间给到基站,可能使MBSFN区域内的基站能够同步实现通知UE中止以MBSFN的方式传输业务数据,有利于系统的稳定。
结合第一方面、或者第一方面的第一种至第八种可能的实现方式中的一种,在第九种可能的实现方式中,所述第二指示信息包括所述第二时间。
在第二指示信息中携带第二时间可以使得UE动态获知何时中止以MBSFN的方式传输业务数据,使得系统更加灵活,能适用于不同的场景和网络环境。
结合第一方面、或者第一方面的第一种至第九种可能的实现方式中的一种,在第十种可能的实现方式中,所述第一指示信息是由多播控制实体MCE发送的。
由MCE来通知基站能够最大限度的利用现有的网元,对现网影响较小。
第二方面,本发明实施例提供一种多媒体广播组播的通信方法,包括:多播控制实体MCE确定在多媒体广播多播单频网MBSFN区域内终止以多媒体广播组播业务MBSFN的方式传输业务数据;所述MCE在第一时间发送指示信息
至基站,以使所述基站通知用户设备UE在第二时间中止以所述MBSFN的方式传输所述业务数据;其中,所述第一时间早于所述第二时间,所述第一时间与所述第二时间之间小于一个多播控制信道MCCH修改周期。
结合第二方面,在第二方面的第一种可能的实现方式中,在所述多播控制实体MCE确定终止以多媒体广播组播MBSFN的方式传输业务数据之前,还包括:所述MCE接收基站发送的通知消息,所述通知消息用于指示所述MBSFN区域内发生拥塞。
结合第二方面或者第二方面的第一种可能的实现方式,在第二种可能的实现方式中,所述第一时间包括:第一组播传输信道调度周期MSP;或者,第一时间点;或者,第一发送时间间隔TTI;或者,第一子帧。
结合第二方面,或者第二方面的第一种或者第二种可能的实现方式,在第三种可能的实现方式中,所述第二时间包括:第二MSP;或者,第二时间点;或者,第二TTI;或者,第二子帧。
结合第二方面,或者第二方面的第一种至第三种可能的实现方式之一,在第四种可能的实现方式中,所述指示信息还用于指示所述第二时间。
结合第二方面的第四种可能的实现方式,在第五种可能的实现方式中,所述指示信息包括第一索引和第二索引;其中,所述第二时间为所述第一索引对应的MCCH修改周期内的所述第二索引指示的MSP。
结合第二方面,或者第二方面的第一种至第五种可能的实现方式之一,在第六种可能的实现方式中,所述指示信息还用于指示通知时间,以使所述基站在所述通知时间通知所述UE在所述第二时间中止以所述MBSFN的方式传输所述业务数据;其中所述通知时间早于所述第二时间且晚于所述第一时间。
第三方面,本发明实施例提供一种基站,包括:接收单元,用于在第一时间接收第一指示信息,所述第一指示信息用于指示中止以多媒体广播组播业务MBSFN的方式传输业务数据;发送单元,用于根据所述第一指示信息发送第二指示信息至用户设备UE,以使所述UE根据所述第二指示信息在第二时间中止以所述MBSFN的方式传输所述业务数据;其中,所述第一时间早于所述第二时
间,所述第一时间与所述第二时间之间小于一个多播控制信道MCCH修改周期。
结合第三方面,在第三方面的第一种可能的实现方式中,所述发送单元具体用于:根据所述第一指示信息,通过在发送至所述UE的媒体接入控制MAC数据包中携带所述第二指示信息,发送所述第二指示信息至所述UE。
结合第三方面的第一种可能的实现方式,在第二种可能的实现方式中,所述第二指示信息被携带在所述MAC数据包的MAC头MAC-header中。
结合第三方面的第二种可能的实现方式,在第三种可能的实现方式中,所述第二指示信息被携带在所述MAC-header中与所述业务数据对应的MAC子头中。
结合第三方面,或者第三方面的第一种至第三种可能的实现方式之一,在第四种可能的实现方式中,所述第一时间包括:第一组播传输信道调度周期MSP;或者,第一时间点;或者,第一发送时间间隔TTI;或者,第一子帧。
结合第三方面,或者第三方面的第一种至第四种可能的实现方式之一,在第五种可能的实现方式中,所述第二时间包括:第二MSP;或者,第二时间点;或者,第二TTI;或者,第二子帧。
结合第三方面的第四种可能的实现方式,在第六种可能的实现方式中,所述第一指示信息还用于指示所述第二时间。
结合第三方面的第六种可能的实现方式,在第七种可能的实现方式中,所述第一指示信息包括第一索引和第二索引;其中,所述第二时间为所述第一索引对应的MCCH修改周期内的所述第二索引指示的MSP。
结合第三方面,或者第三方面的第一种至第七种可能的实现方式之一,在第八种可能的实现方式中,所述第一指示信息还用于指示通知时间,其中所述通知时间早于所述第二时间且晚于所述第一时间;所述发送单元,具体用于根据所述第一时间信息在所述通知时间发送所述第二指示信息至所述UE。
结合第三方面,或者第三方面的第一种至第八种可能的实现方式之一,在第九种可能的实现方式中,所述第二指示信息包括所述第二时间。
结合第三方面,或者第三方面的第一种至第九种可能的实现方式之一,在
第十种可能的实现方式中,所述第一指示信息是由多播控制实体MCE发送的。
第四方面,本发明实施例提供一种多播控制实体MCE,包括:确定单元,用于确定在多媒体广播多播单频网MBSFN区域内终止以多媒体广播组播业务MBSFN的方式传输业务数据;发送单元,用于在第一时间发送指示信息至基站,以使所述基站通知用户设备UE在第二时间中止以所述MBSFN的方式传输所述业务数据;其中,所述第一时间早于所述第二时间,所述第一时间与所述第二时间之间小于一个多播控制信道MCCH修改周期。
结合第四方面,在第四方面的第一种可能的实现方式中,还包括:接收单元,用于接收基站发送的通知消息,所述通知消息用于指示所述MBSFN区域内发生拥塞。
结合第四方面,或者第四方面的第一种可能的实现方式,在第二种可能的实现方式中,所述第一时间包括:第一组播传输信道调度周期MSP;或者,第一时间点;或者,第一发送时间间隔TTI;或者,第一子帧。
结合第四方面,或者第四方面的第一种或者第二种可能的实现方式,在第三种可能的实现方式中,所述第二时间包括:第二MSP;或者,第二时间点;或者,第二TTI;或者,第二子帧。
结合第四方面,或者第四方面的第一种至第三种可能的实现方式之一,在第四种可能的实现方式中,所述指示信息还用于指示所述第二时间。
结合第四方面的第四种可能的实现方式,在第五种可能的实现方式中,所述指示信息包括第一索引和第二索引;其中,所述第二时间为所述第一索引对应的MCCH修改周期内的所述第二索引指示的MSP。
结合第四方面,或者第四方面的第一种至第五种可能的实现方式之一,在第六种可能的实现方式中,所述指示信息还用于指示通知时间,以使所述基站在所述通知时间通知所述UE在所述第二时间中止以所述MBSFN的方式传输所述业务数据;其中所述通知时间早于所述第二时间且晚于所述第一时间。
第五方面,本发明实施例提供一种通信系统,包括:如上所述的基站;和如上所述的MCE。
结合第五方面,在第五方面的第一种可能的实现方式中,还包括:所述UE,用于接收所述第二指示信息。
第六方面,本发明实施例提供一种用户设备,包括:接收单元,用于接收基站发送的MAC数据包;获取单元,用于从MAC数据包中获取第一指示信息,所述第一指示信息用于指示将中止以MBSFN的方式传输业务数据;执行单元,用于根据所述第一指示信息中止以MBSFN的方式接收所述业务数据。
结合第六方面,在第六方面的第一种可能的实现方式中,所述第一指示信息还包括第二时间,所述第一指示信息用于指示在所述第二时间中止以MBSFN的方式传输所述业务数据。
结合第六方面的第一种可能的实现方式,在第二种可能的实现方式中,所述第二时间包括:第二MSP;或者,第二时间点;或者,第二TTI;或者第二子帧。
结合第六方面或者第六方面的第一种或者第二种可能的实现方式,在第三种可能的实现方式中,所述执行单元还用于发起建立承载,所述承载用于以单播的方式传输所述业务数据。
结合第六方面或者第六方面的第一种至第三种可能的实现方式,在第四种可能的实现方式中,所述第一指示信息被携带在所述MAC数据包的MAC-header中。
本发明实施例在第一时间发送第一指示信息至基站,使得基站通知用户设备在第二时间中止以MBSFN的方式传输业务数据,由于第一时间与第二时间之间小于一个多播控制信道的修改周期,因此提高了通知用户设备中止以MBSFN的方式传输业务数据的及时性。
为了便于理解,示例性的给出了与部分与本发明相关概念的说明以供参考。如下所示:
第三代合作伙伴计划(英文:3rd generation partnership project,简称3GPP)是一个致力于发展无线通信网络的项目。通常,将3GPP相关的机构称为3GPP机构。
无线通信网络,是一种提供无线通信功能的网络。无线通信网络可以采用不同的通信技术,例如例如码分多址(英文:code division multiple access,简称CDMA)、时分多址(英文:time division multiple access,简称:TDMA)、频分多址(英文:frequency division multiple access,简称FDMA)、正交频分多址(英文:orthogonal frequency-division multiple access,简称:OFDMA)、单载波频分多址(英文:single Carrier fDMA,简称:SC-FDMA)。一般将由3GPP机构所定义的无线通信网络称为3GPP网络,非3GPP组织所定义的无线通信网络称为非3GPP网络。典型的非3GPP网络包括全球微波接入互操作性(英文:worldwide interoperability for microwave access,简称Wimax)网络,CDMA网络,无线保真(英文:wireless fidelity,简称:WiFi)网络等。在3GPP网络中,根据不同网络的容量、速率等因素可以将网络分为2G网络、3G网络或者4G网络。典型的2G网络包括GSM/GPRS(中文:全球移动通信系统/通用分组无线业务,英文:global system for mobile communications/general packet radio service)网络,典型的3G网络包括宽带码分多址(英文:wideband code division multiple access,简称:WCDMA)网络,典型的4G网络包括LTE网络。本发明实施例所提供的技术方案应用于包括但不限于LTE网络,也可以用于2/3G网络或者非3GPP网络。
用户设备(英文:user equipment,简称:UE)是一种终端设备,可以是可移动的终端设备,也可以是不可移动的终端设备。该设备主要用于接收或者发送业务数据。例如,具备接收以MBSFN的方式传输的业务数据的能力。用户设备可分布于网络中,在不同的网络中用户设备有不同的名称,例如:终端,移动台,用户单元,站台,蜂窝电话,个人数字助理,无线调制解调器,无线通信设备,手持设备,膝上型电脑,无绳电话,无线本地环路台等。
基站(英文:base station,简称:UE)是一种提供无线通信功能的接入网装置。例如在3GPP网络中,2G网络中提供基站功能的设备包括基地无线收发站(英文:base transceiver station,简称:BTS)和基站控制器(英文:base station controller,简称:BSC,3G网络中提供基站功能的设备包括节点B(英文简称:
NodeB)和无线网络控制器(英文:radio network controller,简称:RNC),在4G网络中提供基站功能的设备包括演进的节点B(英文:evolved NodeB简称:eNB)。通常一个基站管理多个小区(英文:cell)。
多媒体广播多播单频网(英文:multimedia broadcast multicast service single frequency network,简称MBSFN)是采用在一个物理区域内一组小区同时传输相同波形的技术的无线通信网络。
MBSFN区域(英文:MBSFN area),是由一组可以协同实现MBSFN方式的传输的小区所组成的区域。
多媒体广播组播业务(英文:multimedia broadcast multicast service,简称:MBMS):是一种通过多个基站同时向多个用户设备发送相同数据的业务。通过MBSFN的方式发送传输业务数据,是指采用MBSFN的方式传输业务数据,即使多个基站同时向多个用户设备发送该业务数据,可以理解为是一种多播的传输方式。
组播传输信道(英文:multicast channel,简称:MCH),用于传输MBMS的业务数据的信道。
组播传输信道调度信息(英文:MCH scheduling information,简称:MSI),用于指示用户设备每个MBMS的业务数据传输在MPS内的第几个子帧结束。
时间,可以基于一个广义的范围进行理解。本发明实施例中的时间可以包括时间点,发送时间间隔(英文:transmission time interval,简称:TTI),子帧(英文:subframe),组播传输信道调度周期(英文:multicast channel scheduling period,简称:MSP)等。
组播传输信道调度周期,是一种调度MCH的周期。
MBMS控制信道(英文:MBMS control channel,简称:MCCH),用于传输MBMS的业务的控制信息的信道。
MCCH修改周期,是一种对MCCH中的控制信息进行修改的周期。例如可以是5.12秒或者10.24秒。
MBSFN子帧,是一种用于传输MBMS的业务数据的子帧。
多播控制实体(英文:multi-cell/multicast coordination entity,简称:MCE),用于配置MBSFN区域内的多个基站发送MBMS的业务数据所使用的参数,以确保统一MBSFN区域内所有基站使用相同的配置来发送MBMS的业务数据。
媒体接入控制(英文:medium access control,简称:MAC)数据包,是一种MAC层的数据包。MAC数据包包括MAC头(英文:MAC-header)和一个或多个MAC SDU(英文全称:service data unit,中文:业务数据单元),一个MAC SDU包括一个MAC子头。
M2接口,是一种MCE与eNB之间的接口,用于传输M2 application protocol(简称:M2AP,中文:M2应用协议)消息。
移动管理网元(英文:mobile management network element,简称:MMNE),是一种用于对用户设备进行移动性管理网的核心网设备。例如在2/3G网络中,移动管理网元包括GPRS业务支持节点(英文:serving GPRS support node,简称:SGSN),在4G网络中,移动性管理网元包括移动管理实体(英文:mobility management entity,简称:MME)。
网关(英文:gateway),是一种传输用户面数据的核心网设备。
中止(英文:suspend),可以理解为终止、停止或者暂停。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种MBMS组网架构示意图;
图2-1为本发明实施例提供的一种MAC数据包的结构示意图;
图2-2为本发明实施例提供的另一种MAC数据包的结构示意图;
图3为本发明实施例提供的一种MAC-header中数据包A对应的MAC子头的结构示意图;
图4为本发明实施例提供的一种MAC-header中新增的数据包A对应的MAC子头的结构示意图;
图5为本发明实施例提供的再一种MAC数据包的结构示意图;
图6为本发明实施例提供的一种多媒体广播组播的通信方法的流程示意图;
图7为本发明实施例提供的一种eNB的结构示意图;
图8为本发明实施例提供的一种MCE的结构示意图;
图9为本发明实施例提供的一种UE的结构示意图。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有付出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明实施例描述的网络架构以及业务场景是为了更加清楚的说明本发明实施例的技术方案,并不构成对于本发明实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本发明实施例提供的技术方案对于类似的技术问题,同样适用。
下面以LTE网络为例进行说明。需要说明的是,本发明实施例所提供的技术方案和技术思想也可以使用在以其他无线接入方式接入的宽带网络中。
图1示例性的示出了典型的MBMS的组网架构。
如图1所示,该组网架构包括:
数据源:用于提供需传输至UE的业务数据;
网关:用于将数据源提供的业务数据传输至eNB;
MME:用于对UE的移动性进行管理,还可以控制eNB和网关为UE创建传输数据的承载;
MCE:用于对eNB通过MBSFN的方式发送上述业务数据所需的参数进行配置。
多个eNB:用于以MBSFN的方式将网关提供的业务数据发送至UE,或者
以单播的方式将业务数据发送至UE;
UE:用于接收以MBSFN的方式发送的业务数据,或者接收以单播的方式发送的业务数据。
为了便于叙述,图中仅示出了2个eNB,在实际部署中,一个MCE中可以连接多个eNB,该MCE可以对该多个eNB进行配置,以使该多个eNB在相同的时间发送相同的业务数据,从而实现MBSFN的方式发送上述业务数据。
对于UE而言,当多个eNB以MBSFN的方式发送的业务数据到达UE后,UE不用区分是哪个eNB发出的信号,多个eNB发出的信号在UE处进行叠加,可以使得信号更强,减少了传输该业务数据的误包率。
通常,以MBSFN的方式发送业务数据的流程如下:
1、数据源可依次将待传输的业务的特性,业务数据速率,业务数据量的大小,和待发送的区域等相关信息发送至网关;
2、网关收到上述数据源发送的信息后,为各个eNB分配IP多播地址,并将该地址传输至MME和MCE;
3、MCE为待传输的业务分配空口资源,并通知各个eNB,且将网关分配的IP多播地址通知给各个eNB;
4、各个eNB将网关分配的IP多播地址加入对应的IP多播组,并根据MCE分配的空口资源更新预留的子帧(这些预留的子帧称为MBSFN子帧),这些预留的子帧将用于传输上述业务数据。例如将每个调度周期内的2号,7号和8号子帧作为MBSFN子帧。
至此,以MBSFN的方式发送业务数据的准备工作完成。
当需要以MBSFN的方式传输业务数据时,
5、数据源将业务数据发送至网关;
6、网关将上述业务数据通过IP多播的方式发送至各个eNB;
7、各个eNB通过MBSFN子帧在空口发送业务数据至UE。
例如在MCH上发送业务数据。
至此,实现了通过MBSFN的方式传输业务数据的功能。
其中,为了让各个eNB在同一子帧发送相同的数据,需采用同步措施。在时间维度上可以划分为固定时长的调度周期,数据源会为每个数据包附上一个时间戳,eNB根据数据包的时间戳可以将数据包映射到相应的调度周期。映射到调度周期N的数据包,会在周期N+1发送。这里的调度周期也可以成为MSP。
可见,MCE为业务数据分配的MBSFN子帧的数量决定了业务数据的传输速率。当业务数据的速率较高的情况下,需要分配较多的MBSFN子帧,当业务数据的速率较低的情况下,需要分配较少的MBSFN子帧。由于MBSFN子帧只用于传输MBMS的业务数据,考虑到资源使用效率,分配较多的MBSFN子帧会在业务数据的速率变得较低时产生资源浪费,因此通常不会为MBMS的业务数据分配超过平均速率所需的MBSFN子帧。但是当MBMS的业务数据的速率变得较高时,由于MBSFN子帧无法容纳更多的数据,会导致部分MBMS的业务数据的丢弃。
鉴于此,可以将部分MBMS的业务通过其他方式,例如单播方式发送至UE,从而使得通过MBSFN的方式发送的业务数据的速率与分配的MBSFN子帧的数量匹配。为了实现这一目的,需要提前通知UE,某个MBMS的业务将要中止以MBSFN的方式传输其业务数据。
由于MBMS相关的控制信息是由MCCH传输的,因此可以考虑通过MCCH通知UE,即在MCCH中携带指示信息,告知UE某个MBMS的业务将要停止以MBSFN的方式传输其业务数据。但是由于MCCH的修改受限于MCCH的修改周期,不是任何时刻都能修改,因此从MCE通知eNB,到eNB通知UE,到UE中止以MBSFN的方式接收该业务数据至少需要经历一个MCCH修改周期,即5.12秒或者10.24秒,会造成无法及时通知UE的情况发生,可能会造成UE无法及时发起单播承载的建立,从而导致业务中断。
为了能够及时通知UE某个MBMS的业务将要停止以MBSFN的方式传输其业务数据,可以考虑在通过MCH发送的业务数据的数据包中携带相应的指示信息来通知UE。例如可以通过承载业务数据的MAC数据包来携带指示信息。通过MAC数据包来携带指示信息,可以克服MCCH修改周期的限制,减少MCE
通知eNB到UE终止以MBSFN的方式接收该业务数据之间的时间。
假设需要以MBSFN的方式传输业务A和业务B的数据至UE,MCE在每个MSP中分配子帧2和子帧7作为MBSFN子帧。
如图2-1所示,示例性的,eNB在子帧2发送MSP内的首个MAC数据包包括:
MAC-header:该MAC数据包的MAC头,包括该MAC数据包包括的MSI,MCCH和数据包A三部分对应的MAC子头。
例如,在MSI对应的MAC子头中,第一个字段R和第二个字段R为保留字段,第三个字段E表示后续是否是下一个MAC子头,如果该值为1,表示下面还是MAC子头,如果该值为0,表示下面不是MAC子头第四个LCID of MSI表示该MAC子头对应的MAC SDU是一个MSI,,第五个字段F表示字段Length of MSI的长度,取值为0,表示字段Length of MSI的长度为7比特,取值为1,表示字段Length of MSI的长度为15比特,第六个字段Length of MSI表示MSI部分的长度。其中,
MCCH对应的MAC子头,和数据包A对应的MAC子头的相关内容可以参考MSI对应的MAC子头的相关内容,此处不作赘述。
MSI:用于指示业务A和业务B的数据在该MSP内的第几个子帧结束传输。
例如,在MSI中的第一条记录中,字段LCID of A表示该条记录对应的是数据包A,字段stop表示数据包A在MSP中的哪个MBSFN子帧结束传输;MSI中的第二条记录的内容请参考第一条记录的内容,此处不作赘述。
MCCH:用于指示业务A和业务B的数据以MBSFN的方式进行传输的相关的控制信息。
数据包A:用于承载业务A的一部分数据。
如图2-2所示,示例性的,eNB在该MSP内子帧7发送的MAC数据包包括:
MAC-header:该MAC数据包的MAC头,包括该MAC数据包包括的数据包A和数据包B对应的MAC子头。MAC子头的具体内容可参见图2-1的
MAC-header的相关内容,此处不做赘述。
数据包A:用于承载业务A的另一部分数据。
数据包B:用于承载业务B的一部分数据。
上述图2-1和图2-2示例性的给出了MAC数据包的结构示意图,并不对MAC数据包的结构形成限制,不同场景下MAC数据包的结构可以不同。
假设将中止以MBSFN的方式传输业务A的数据,可以考虑以下几种实现方式在MAC数据包中携带指示信息,用以通知UE将中止以MBSFN的方式传输业务A的数据:
方式1):可以对MAC数据包的MAC-header进行修改,将其中数据包A对应的MAC子头进行改写。
具体的,可以通过对数据包A的MAC子头的保留字段进行改写。例如,将第一个保留字段R设置为1,或者将第二个保留字段设置为1,用于指示UE数据包A所承载的业务A的数据将在下一个或者第M个MSP后止以MBSFN的方式进行传输,其中M可以事先配置在UE,也可以由eNB通知UE,本发明实施例对此不作显示。如图3所示,对数据包A的MAC子头中的第一个保留字段设置为1。
再例如,可以将第一个保留字段R和第二个保留字段R组合来表示将在哪个MSP中止以MBSFN的方式传输业务A的数据。示例性的,将第一个保留字段设置为1,第二个保留字段设置为0,表示将在该MSP之后的第二个MSP中止以MBSFN的方式传输业务A的数据;将第一个保留字段设置为0,将第二个保留字段设置为1,表示将在MSP之后的第一个MSP中止以MBSFN的方式传输业务A的数据。本领域技术人员可以理解还可以有其他的组合方式来表示MSP的个数,此处不做赘述。
可选的,假设在该MSP内包括5个承载业务A的数据的MAC数据包,可以对该MSP中上述5个MAC数据包中的多个或者所有包括业务A的数据的MAC数据包都进行上述的修改,以确保UE可以正确获取上述指示信息。
方式2):可以对MAC数据包的MAC-header进行修改,新增1条数据包
A对应的MAC子头,携带指示信息,用以指示UE将中止以MBSFN的方式传输业务A的数据。
如图4所示,可以将新增的MAC子头中的Length of A字段设置为0,表示将在下一个MSP或者第M个MSP后中止以MBSFN的方式传输业务A的数据,其中M可以实现配置在UE,也可以由eNB通知UE。
可选的,还可以利用方式1)中对保留字段的设置来实现通知UE将中止以MBSFN的方式传输业务A的数据,具体不作赘述。
可选的,可以对MSP内多个承载业务A的数据的MAC数据包进行方式2)的修改,用以确保UE可以正确获取上述指示信息。
方式3):可以在MAC数据包中新增一个MAC CE(英文:control element,中文:控制元素),用以携带上述指示信息,指示UE将中止以MBSFN的方式传输业务A的数据。
如图5所示,可以在该MAC数据包的MSI部分后增加上述指示信息,指示信息的具体格式不限。本领域技术人员理解,该指示信息部分,也可以增加在MCCH部分之后,或者数据包A部分之后,此处不做限制。由于在MAC数据包中新增了指示信息部分,本领域技术人员理解,需要在MAC-header中增加指示信息对应的MAC子头。
由于在MSP内的每个MBSFN子帧内都会传输MAC数据包,而且对于MAC数据包的修改不受MCCH的修改周期的限制,较通过MCCH来通知UE将中止以MBSFN的方式传输业务数据,通过MAC数据包来通知UE更加灵活和及时,例如,在业务数据速率在下一个MSP将要突增时,可以在当前MSP的MAC数据包中携带上述指示信息,在下一个MSP即可实现中止以MBSFN的方式传输该业务数据,使得MBSFN的方式的数据传输更加灵活和高效,能够应对业务数据速率突增的情况,避免由于业务数据的速率突增导致的数据丢弃,确保的用户的体验。
上面示例性的介绍了通过MAC数据包携带指示信息来指示UE将中止以MBSFN的方式传输业务数据。
从流程上考虑,可以由MCE下发通知至eNB,再由eNB通过MAC数据包下发指示信息至UE。为了便于理解,可以将MCE下发给eNB的指示信息作为第一指示信息,将eNB通过MAC数据包下发至UE的指示信息作为第二指示信息。
示例性的,图6示出了一种多媒体广播组播的通信方法,用以实现通过MAC数据包携带指示中止以MBSFN的方式传输业务数据的指示信息至UE。
如图6所示:
101、MCE确定在MBSFN区域内中止以MBSFN的方式传输业务A的数据。
102、MCE发送第一指示信息至eNB。
其中,第一指示信息用于指示中止以多媒体广播组播业务MBSFN的方式传输业务A的数据。
103、eNB根据第一指示信息发送第二指示信息至UE。
其中,第二指示信息用于指示将中止以MBSFN的方式传输业务A的数据。
104、UE与数据源之间交互以建立承载,以单播的方式传输业务A的数据。
示例性的,MCE可以根据预先的配置或者MBSFN区域内的拥塞状况决定中止以MBSFN的方式传输业务A的数据。
可选的,MCE在步骤101之前可以接收eNB发送的通知,该通知用于指示该MBSFN区域内发生了拥塞,即MCE所分配的用于传输MBMS的业务的MBSFN子帧容量无法满足MBMS业务的传输的容量需求。
示例性的,MCE可以发送第一指示信息至该MBSFN区域内的所有eNB,以确保传输业务A的数据的eNB都会根据第一指示信息进行相应的动作。
示例性的,MCE可以通过M2接口的消息,例如MBMS scheduling information消息,携带第一指示信息。
为了便于理解,可以将MCE发送第一指示信息至eNB的时间称为第一时间,将中止以MBSFN的方式传输业务A的数据的时间称为第二时间。其中,对于第一时间和第二时间可以基于广义的理解,例如可以是某个时间点,某个
MSP,某个TTI,某个子帧等
可选的,第一指示信息还可用于指示第二时间,例如携带指示第二时间的信元。
示例性的,该第二时间为某个MSP时,第一指示信息中可以携带第一索引和第二索引。第一索引用于指示MCCH修改周期,第二索引用于指示MCCH修改周期内的MSP,因此通过第一索引和第二索引可以确定某个MCCH修改周期中的某个MSP。
可选的,第一指示信息还可以包括通知时间,用于指示eNB何时通知UE,用以确保多个eNB可以同时下发第二指示信息至UE。
示例性的,eNB发送第二指示信息可以采用上述通过MAC数据包携带指示信息的方式,例如如图3所示在数据包A对应的MAC子头中携带指示信息,如图4所示在新增的数据包A对应的MAC子头中携带指示信息,如图5所示在MAC数据包新增指示信息部分来携带指示信息,此处不做赘述。
可选的,该第二指示信息还可以包括第二时间。
示例性的,UE在接收到第二指示信息后,可以根据预先的配置,或者eNB的通知,在第二时间中止以MBSFN的方式接收业务A的数据。一方面网络可以在第二时间中止以MBSFN的方式传输业务A的数据,另一方面UE可以在第二时间中止以MBSFN的方式接收业务A的数据,使得网络侧和UE对于业务A的数据的传输处理达到同步,便于网络侧能够成功中止以MBMS方式传输业务A的数据。由于通过MAC数据包来携带第二指示信息,因此第二时间和第一时间之间可以小于一个MCCH的修改周期,较通过MCCH来通知UE中止以MBSFN的方式传输业务A的数据,更加灵活和及时。
另外,UE在步骤103获知网络将中止以MBSFN的方式传输业务A的数据后,可以建立与网络的承载,以便于在第二时间后能够用单播的方式继续接收业务A的数据,保证业务A的连续性。
为了能够实现图6所示的流程,需要对现有的MCE,eNB和UE进行修改。
示例性的,如图7所示,eNB可以包括接收单元和发送单元。其中,可以
通过接收单元实现步骤102中对于第一指示信息的接收,通过发送单元实现步骤103中对于第二指示信息的发送。其中,接收单元和发送单元的功能可以由收发机实现。
作为另一种可选的实施方式,eNB可以包括处理器和存储器。其中,存储器用于存储实现接收单元和发送单元功能的代码,处理器可以执行存储器中存储的代码,以实现上述接收单元和发送单元的功能。
示例性的,如图8所示,MCE可以包括确定单元和发送单元。其中可以通过确定单元实现步骤101中确定在MBSFN区域内中止以MBSFN的方式传输业务A的数据,通过发送单元实现步骤102中发送第一指示信息至eNB。可选的,MCE还可以包括接收单元,用于接收eNB发送的用于指示MBSFN区域发送拥塞的通知消息。其中,确定单元可以通过处理器实现,发送单元可以通过发送电路或者网卡等通信电路实现,接收单元可以通过接收电路或者网卡等通信电路实现。
作为另一种可选的实施方式,MCE可以包括处理器和存储器。其中,存储器用于存储实现确定单元、发送单元和接收单元功能的代码,处理器可以执行存储器中存储的代码,以实现上述确定单元、发送单元的和接收单元的功能。
示例性的,如图9所示,UE可以包括接收单元和发送单元。其中,可以通过接收单元来实现步骤103中对于第二指示信息的接收,通过发送单元实现发送承载建立的请求。其中,接收单元和发送单元可以通过收发机来实现。
作为另一种可选的实施方式,UE可以包括处理器和存储器。其中,存储器用于存储实现接收单元和发送单元功能的代码,处理器可以执行存储器中存储的代码,以实现上述接收单元的和发送单元的功能。
通过对于MCE,eNB和UE的修改,可以实现图6所示的流程,即可以在小于一个MCCH的修改周期的时长内,实现中止以MBSFN的方式传输业务数据,提高了数据传输的灵活性,能够成功应对由于业务数据速率突增所带来的网络冲击。
本领域技术人员能够理解,信息和信号可以使用任何技术方法(technology
techniques)来表示,例如,数据(data),指令(instructions),命令(command),信息(information),信号(signal),比特(bit),符号(symbol)和芯片(chip)可以通过电压、电流、电磁波、磁场或磁粒(magnetic particles),光场或光粒(optical particles),或以上的任意组合。
本领域技术任何还可以了解到本发明实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件,或两者的结合进行实现。为清楚展示硬件和软件的可替换性(interchangeability),上述的各种说明性部件(illustrative components)和步骤已经通用地描述了它们的功能。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用,可以使用各种方法实现所述的功能,但这种实现不应被理解为超出本发明实施例保护的范围。
本发明实施例中所描述的各种说明性的逻辑块,单元和电路可以通过通用处理器,数字信号处理器,专用集成电路(ASIC),现场可编程门阵列(FPGA)或其它可编程逻辑装置,离散门或晶体管逻辑,离散硬件部件,或上述任何组合的设计来实现或操作所描述的功能。通用处理器可以为微处理器,可选地,该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现,例如数字信号处理器和微处理器,多个微处理器,一个或多个微处理器联合一个数字信号处理器核,或任何其它类似的配置来实现。
本发明实施例中所描述的方法或算法的步骤可以直接嵌入硬件、处理器执行的软件单元、或者这两者的结合。软件单元可以存储于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、可移动磁盘、CD-ROM或本领域中其它任意形式的存储媒介中。示例性地,存储媒介可以与处理器连接,以使得处理器可以从存储媒介中读取信息,并可以向存储媒介存写信息。可选地,存储媒介还可以集成到处理器中。处理器和存储媒介可以设置于ASIC中,ASIC可以设置于用户设备中。可选地,处理器和存储媒介也可以设置于用户设备中的不同的部件中。
在一个或多个示例性的设计中,本发明实施例所描述的上述功能可以在硬件、软件、固件或这三者的任意组合来实现。如果在软件中实现,这些功能可以存储与电脑可读的媒介上,或以一个或多个指令或代码形式传输于电脑可读的媒介上。电脑可读媒介包括电脑存储媒介和便于使得让电脑程序从一个地方转移到其它地方的通信媒介。存储媒介可以是任何通用或特殊电脑可以接入访问的可用媒体。例如,这样的电脑可读媒体可以包括但不限于RAM、ROM、EEPROM、CD-ROM或其它光盘存储、磁盘存储或其它磁性存储装置,或其它任何可以用于承载或存储以指令或数据结构和其它可被通用或特殊电脑、或通用或特殊处理器读取形式的程序代码的媒介。此外,任何连接都可以被适当地定义为电脑可读媒介,例如,如果软件是从一个网站站点、服务器或其它远程资源通过一个同轴电缆、光纤电脑、双绞线、数字用户线(DSL)或以例如红外、无线和微波等无线方式传输的也被包含在所定义的电脑可读媒介中。所述的碟片(disk)和磁盘(disc)包括压缩磁盘、镭射盘、光盘、DVD、软盘和蓝光光盘,磁盘通常以磁性复制数据,而碟片通常以激光进行光学复制数据。上述的组合也可以包含在电脑可读媒介中。
本发明说明书的上述描述可以使得本领域技术任何可以利用或实现本发明的内容,任何基于所公开内容的修改都应该被认为是本领域显而易见的,本发明所描述的基本原则可以应用到其它变形中而不偏离本发明的发明本质和范围。因此,本发明所公开的内容不仅仅局限于所描述的实施例和设计,还可以扩展到与本发明原则和所公开的新特征一致的最大范围。
Claims (38)
- 一种多媒体广播组播的通信方法,其特征在于,包括:基站在第一时间接收第一指示信息,所述第一指示信息用于指示中止以多媒体广播组播业务MBSFN的方式传输业务数据;所述基站根据所述第一指示信息发送第二指示信息至用户设备UE,以使所述UE根据所述第二指示信息在第二时间中止以所述MBSFN的方式传输所述业务数据;其中,所述第一时间早于所述第二时间,所述第一时间与所述第二时间之间小于一个多播控制信道MCCH修改周期。
- 根据权利要求1所述的方法,其特征在于,所述基站根据所述第一指示信息发送第二指示信息至用户设备UE,包括:所述基站根据所述第一指示信息,通过在发送至所述UE的媒体接入控制MAC数据包中携带所述第二指示信息,发送所述第二指示信息至所述UE。
- 根据权利要求2所述的方法,其特征在于,所述第二指示信息被携带在所述MAC数据包的MAC头MAC-header中。
- 根据权利要求3所述的方法,其特征在于,所述第二指示信息被携带在所述MAC-header中与所述业务数据对应的MAC子头中。
- 根据权利要求1-4任一项所述的方法,其特征在于,所述第一时间包括:第一组播传输信道调度周期MSP;或者,第一时间点;或者,第一发送时间间隔TTI;或者,第一子帧。
- 根据权利要求1-5任一项所述的方法,其特征在于,所述第二时间包括:第二MSP;或者,第二时间点;或者,第二TTI;或者,第二子帧。
- 根据权利要求5所述的方法,其特征在于,所述第一指示信息还用于指示所述第二时间。
- 根据权利要求7所述的方法,其特征在于,所述第一指示信息包括第一索引和第二索引;其中,所述第二时间为所述第一索引对应的MCCH修改周期内的所述第二索引指示的MSP。
- 根据权利要求1-8任一项所述的方法,其特征在于,所述第一指示信息还用于指示通知时间,其中所述通知时间早于所述第二时间且晚于所述第一时间;所述基站根据所述第一指示信息发送第二指示信息至用户设备UE包括:所述基站根据所述第一时间信息在所述通知时间发送所述第二指示信息至所述UE。
- 根据权利要求1-9任一项所述的方法,其特征在于,所述第二指示信息包括所述第二时间。
- 根据权利要求1-10任一项所述的方法,其特征在于,所述第一指示信息是由多播控制实体MCE发送的。
- 一种多媒体广播组播的通信方法,其特征在于,包括:多播控制实体MCE确定在多媒体广播多播单频网MBSFN区域内终止以多媒体广播组播业务MBSFN的方式传输业务数据;所述MCE在第一时间发送指示信息至基站,以使所述基站通知用户设备UE在第二时间中止以所述MBSFN的方式传输所述业务数据;其中,所述第一时间早于所述第二时间,所述第一时间与所述第二时间之间小于一个多播控制信道MCCH修改周期。
- 根据权利要求12所述的方法,其特征在于,在所述多播控制实体MCE确定终止以多媒体广播组播MBSFN的方式传输业务数据之前,还包括:所述MCE接收基站发送的通知消息,所述通知消息用于指示所述MBSFN区域内发生拥塞。
- 根据权利要求12或13所述的方法,其特征在于,所述第一时间包括:第一组播传输信道调度周期MSP;或者,第一时间点;或者,第一发送时间间隔TTI;或者,第一子帧。
- 根据权利要求12-14任一项所述的方法,其特征在于,所述第二时间包括:第二MSP;或者,第二时间点;或者,第二TTI;或者,第二子帧。
- 根据权利要求12-15任一项所述的方法,其特征在于,所述指示信息还用于指示所述第二时间。
- 根据权利要求16所述的方法,其特征在于,所述指示信息包括第一索引和第二索引;其中,所述第二时间为所述第一索引对应的MCCH修改周期内的所述第二索引指示的MSP。
- 根据权利要求12-17任一项所述的方法,其特征在于,所述指示信息还用于指示通知时间,以使所述基站在所述通知时间通知所述UE在所述第二时间中止以所述MBSFN的方式传输所述业务数据;其中所述通知时间早于所述第二时间且晚于所述第一时间。
- 一种基站,其特征在于,包括:接收单元,用于在第一时间接收第一指示信息,所述第一指示信息用于指示中止以多媒体广播组播业务MBSFN的方式传输业务数据;发送单元,用于根据所述第一指示信息发送第二指示信息至用户设备UE,以使所述UE根据所述第二指示信息在第二时间中止以所述MBSFN的方式传输所述业务数据;其中,所述第一时间早于所述第二时间,所述第一时间与所述第二时间之间小于一个多播控制信道MCCH修改周期。
- 根据权利要求19所述的基站,其特征在于,所述发送单元具体用于:根据所述第一指示信息,通过在发送至所述UE的媒体接入控制MAC数据包中携带所述第二指示信息,发送所述第二指示信息至所述UE。
- 根据权利要求20所述的基站,其特征在于,所述第二指示信息被携带在所述MAC数据包的MAC头MAC-header中。
- 根据权利要求21所述的基站,其特征在于,所述第二指示信息被携带在所述MAC-header中与所述业务数据对应的MAC子头中。
- 根据权利要求19-22任一项所述的基站,其特征在于,所述第一时间包括:第一组播传输信道调度周期MSP;或者,第一时间点;或者,第一发送时间间隔TTI;或者,第一子帧。
- 根据权利要求19-23任一项所述的基站,其特征在于,所述第二时间包括:第二MSP;或者,第二时间点;或者,第二TTI;或者,第二子帧。
- 根据权利要求23所述的基站,其特征在于,所述第一指示信息还用于指示所述第二时间。
- 根据权利要求25所述的基站,其特征在于,所述第一指示信息包括第一索引和第二索引;其中,所述第二时间为所述第一索引对应的MCCH修改周期内的所述第二索引指示的MSP。
- 根据权利要求19-26任一项所述的基站,其特征在于,所述第一指示信息还用于指示通知时间,其中所述通知时间早于所述第二时间且晚于所述第一 时间;所述发送单元,具体用于根据所述第一时间信息在所述通知时间发送所述第二指示信息至所述UE。
- 根据权利要求19-27任一项所述的基站,其特征在于,所述第二指示信息包括所述第二时间。
- 根据权利要求19-28任一项所述的基站,其特征在于,所述第一指示信息是由多播控制实体MCE发送的。
- 一种多播控制实体MCE,其特征在于,包括:确定单元,用于确定在多媒体广播多播单频网MBSFN区域内终止以多媒体广播组播业务MBSFN的方式传输业务数据;发送单元,用于在第一时间发送指示信息至基站,以使所述基站通知用户设备UE在第二时间中止以所述MBSFN的方式传输所述业务数据;其中,所述第一时间早于所述第二时间,所述第一时间与所述第二时间之间小于一个多播控制信道MCCH修改周期。
- 根据权利要求30所述的MCE,其特征在于,还包括:接收单元,用于接收基站发送的通知消息,所述通知消息用于指示所述MBSFN区域内发生拥塞。
- 根据权利要求30或31所述的MCE,其特征在于,所述第一时间包括:第一组播传输信道调度周期MSP;或者,第一时间点;或者,第一发送时间间隔TTI;或者,第一子帧。
- 根据权利要求30-32任一项所述的MCE,其特征在于,所述第二时间包括:第二MSP;或者,第二时间点;或者,第二TTI;或者,第二子帧。
- 根据权利要求30-33任一项所述的MCE,其特征在于,所述指示信息还用于指示所述第二时间。
- 根据权利要求34所述的MCE,其特征在于,所述指示信息包括第一索引和第二索引;其中,所述第二时间为所述第一索引对应的MCCH修改周期内的所述第二索引指示的MSP。
- 根据权利要求30-35任一项所述的MCE,其特征在于,所述指示信息还用于指示通知时间,以使所述基站在所述通知时间通知所述UE在所述第二时间中止以所述MBSFN的方式传输所述业务数据;其中所述通知时间早于所述第二时间且晚于所述第一时间。
- 一种通信系统,其特征在于,包括:如权利要求19-29任一项所述的基站;和如权利要求30-36任一项所述的MCE。
- 根据权利要求37所述的系统,其特征在于,还包括:所述UE,用于接收所述第二指示信息。
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US20220345853A1 (en) * | 2020-01-14 | 2022-10-27 | Huawei Technologies Co., Ltd. | Multicast service transmission method and apparatus |
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EP3342196B1 (en) * | 2015-08-27 | 2022-04-06 | Qualcomm Incorporated | Mbms architecture with cdn caching in enb |
WO2018027817A1 (zh) * | 2016-08-11 | 2018-02-15 | 华为技术有限公司 | 一种传输组播数据的方法和装置 |
CN110913349B (zh) * | 2019-11-19 | 2021-07-27 | 成都亿佰特电子科技有限公司 | 一种基于ble广播技术的数据采集方法及系统 |
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EP3217723B1 (en) | 2019-04-10 |
EP3217723A1 (en) | 2017-09-13 |
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CN105794267A (zh) | 2016-07-20 |
CN105794267B (zh) | 2019-06-21 |
US20170251453A1 (en) | 2017-08-31 |
EP3217723A4 (en) | 2017-12-06 |
CN110337068A (zh) | 2019-10-15 |
CN110337068B (zh) | 2021-12-14 |
US10362560B2 (en) | 2019-07-23 |
US10887866B2 (en) | 2021-01-05 |
EP3547722B1 (en) | 2022-03-16 |
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