Classifications

• • 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
  • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
  • H04W52/02—Power saving arrangements
  • H04W52/0209—Power saving arrangements in terminal devices
  • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
  • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W72/00—Local resource management
  • H04W72/30—Resource management for broadcast services
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
  • Y02D30/00—Reducing energy consumption in communication networks
  • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

• the present invention relates to the field of communications, and in particular to a method and a user equipment for receiving a multicast control channel notification message.
• LTE Long Term Evolution
• 3GPP 3rd Generation Partnership Project
• MBMS Multimedia Broadcast Multicast Service
• MBMS Multimedia Broadcast Multicast Service
• the MBMS service is introduced in the LTE R9 system.
• the MBMS service is implemented in the system and requires the common transmission of control signaling and user data.
• the control signaling may inform the receiving end of the corresponding control parameter, where the receiving end may be a User Equipment (UE) or a terminal, and direct the UE to the corresponding location to receive the MBMS of interest.
• UE User Equipment
• Business ie corresponding user data.
• This control signaling is transmitted in the LTE R9 system through a Multicast Control Channel (MCCH).
• MCCH Multicast Control Channel
• the MBMS service is divided into a plurality of multimedia broadcast multicast service area (i.e., MBSFN Area), where the MBSFN Area is composed of a series of cells, in MBSFN.
• MBSFN Area multimedia broadcast multicast service area
• the cell in the Area will transmit the control signaling and the user data synchronously using the MBSFN technology, so that the UE can obtain the corresponding combining gain when receiving.
• a certain cell may be covered by multiple MBSFN Areas at the same time, which is commonly referred to as MBSFN Area overlap coverage.
• MBSFN Area overlap coverage Currently, the cell supports overlapping coverage of 1 to 8 MBSFN Areas.
• FIG. 1 is a schematic diagram of a logical relationship between MCCH MP and MCCP RP according to the related art. As shown in FIG.
• MCCH RP indicates the repeated transmission of MCCH content in MCCH MP.
• the UE can learn all the MCCHs in the cell and their corresponding configuration information by using a System Information Block (SIB) 13 of the Broadcast Control Channel (BCCH) (for example, the cell has How many MCCHs, corresponding parameters of each MCCH MP, RP, etc.)
• SIB13 in the BCCH has already obtained the mouth before preparing the MBMS service.
• the MBMS service is characterized by a large amount of data for the service, a long duration of reception by the terminal, and a relatively constant average data rate.
• the above characteristics determine the scheduling of the MBMS service.
• the control signaling configuration is semi-static, that is, the scheduling information of the MBMS service, and the control signaling information is kept unchanged for a long time, so that the periodic system side of each MCCH information is sent. A message that has not changed (always sent because new users may be connected at any time;). In this way, for the terminal that has obtained the MCCH information, if it receives an MCCH information that has not changed every time, the terminal will be charged, because the MCCH information is large, and the receiving and parsing process consumes power.
• an MBMS notification message (English may be referred to as MCCH change notification, or MBMS notification indicator, or MBMS notification information, or MBMS notification; may also be referred to as an MBMS port message, MBMS notification message, or MBMS indication information, etc.
• the MBMS notification information is used as an example.
• the MBMS notification message uses a small amount of information to describe whether the MCCH information to be sent by the next MP and the MCCH information sent in the MP are updated. It is necessary to listen to a small amount of MBMS notification message information, and then decide whether to receive the upcoming MCCH information according to the MBMS notification message terminal.
• the specific sending location of the MCCH notification message is notified by the SIB13 in the BCCH.
• all MCCHs in the cell will use a common MCCH notification to indicate multiple MCCH changes; specifically, the MCCH notification will indicate the specific by its payload.
• the one or the other MCCHs are changed.
• the payload of the MCCH notification is 8 bits.
• the downlink control information (Downlink Control Information, DCI for short) is used.
• the physical downlink control channel Physical Downlink Control Channel, PDCCH for short) is used.
• Send in ; MCCH notification supports up to 8 MCCH indications, of which specific MCCH Notification that a bit represents that MCCH will be notified by SIB 13 in the BCCH.
• the MCCH notification is repeatedly transmitted in the MCCH MP, and the number of transmissions is multiple (or one time).
• the main purpose of repeatedly transmitting the MCCH notification in the MCCH MP is to improve the reception reliability.
• the current problem when there are overlapping coverage in the cell, there will be multiple in the cell.
• the MPs corresponding to each MCCH may be different.
• the UE it is impossible to determine how many MCCH notifications are received in the interval. Therefore, the UE may frequently try to receive the MCCH notification, resulting in power consumption. Big. SUMMARY OF THE INVENTION
• the present invention has been made in view of the problem in the related art that the UE cannot determine how many times MCCH notification is received within a long time interval.
• the main object of the present invention is to provide a receiving scheme of MCCH notification to solve the above problem.
• a method of receiving a multicast control channel notification message is provided.
• the method for receiving a multicast control channel notification message includes: when the user equipment learns that the MBMS service of the multimedia broadcast multicast service of interest corresponds to a certain multicast control channel MCCH, the user equipment indicates on the broadcast control channel BCCH Receiving one or more MCCH notification messages within the duration of the MP of the MCCH; when the user equipment cannot know that the MBMS service of the multimedia broadcast multicast service of interest is corresponding to a certain multicast control channel MCCH, the user equipment broadcast control One or more MCCH notification messages are received within the duration of the MP with the shortest duration in the MCCH MP indicated by the channel BCCH.
• the receiving, by the user equipment, the one or more MCCH notification messages in the duration interval of the MP includes: receiving, by the user equipment, at least the number of repeated transmissions, the number of the repeated transmissions, the number of the re-received times, the MCCH notification message, wherein the notificationRepetitionCoff is the pre-configured shortest The number of times the MCCH notification message is repeatedly sent in the MP period.
• the receiving, by the user equipment, the MCCH notification message in the duration interval of the MP includes: When the user equipment receives the MCCH notification message corresponding to the MCCH, the user equipment stops receiving the MCCH notification message in the time interval of the MP.
• the user equipment receives the MCCH notification message one or more times in the duration interval of the MP with the shortest duration: the user equipment receives at least the MCCH notification message of the number of repeated transmissions notificationRepetitionCof within the duration interval of the MP with the shortest duration, wherein notificationRepetitionCoff The number of times the MCCH notification message is repeatedly sent in the shortest MP period for the pre-configured.
• the one or more MCCH notification messages received by the user equipment in the duration interval of the MP with the shortest duration include: the duration of the MP with the shortest duration of the user equipment in the case that the user equipment receives the MCCH notification message corresponding to the correct MCCH.
• the MCCH notification message is stopped to be received within the interval.
• a user equipment is also provided.
• the user equipment according to the present invention includes: an obtaining module, configured to acquire a desired content of the user equipment
• the MP of the MCCH in which the MBMS service is located or the MPCH of the MCCH MP indicated by the BCCH is the shortest MCCH of the MCCH; and the receiving module is configured to receive one or more MCCH notification messages within the time interval of the MP.
• the user equipment further includes: a determining module, configured to determine whether a multimedia broadcast multicast service MBMS service desired by the user equipment is configured on the multicast control channel MCCH; and the receiving module is configured to: when the determining result of the determining module is yes Next, one or more MCCH notification messages are received within the duration interval of the MP of the MCCH.
• the receiving module module is configured to receive one or more MCCH notification messages within the duration interval of the MP of the MCCH with the shortest MP duration indicated by the BCCH.
• the receiving module receives at least the MCCH notification message of the number of repeated transmissions of the notificationRepetitionCoff times in the duration interval of the MP, where the notificationRepetitionCoff is a pre-configured number of times of repeatedly transmitting the MCCH notification message in the shortest MP period.
• the receiving module is further configured to stop receiving the MCCH notification message within the time interval of the MP if the correct or expected MCCH notification message is received.
• the receiving module is further configured to stop receiving the MCCH notification message within the time interval of the MP if the correct or expected MCCH notification message is received.
• the user equipment is used to obtain the MCCH letter where the desired MBMS service is located.
• the MP or the BCCH indicates the MP of the MCCH with the shortest MP duration, and receives one or more MCCH notification messages within the time interval of the MP, which solves the problem in the related art that the UE cannot determine how many times the MCCH is received within the interval.
• the problem of notification reduces the number of times the UE receives the MCCH notification, thereby reducing the UE power consumption. It also avoids situations where the MCCH changes but is not discovered by the UE.
• FIG. 1 is a schematic diagram showing a logical relationship between MCCH MP and MCCP RP according to the related art
• FIG. 2 is a schematic diagram of a network side transmitting MCCH notification position according to an embodiment of the present invention
• FIG. 4 is a structural block diagram of a user equipment according to an embodiment of the present invention
• FIG. 5 is a block diagram showing a preferred structure of a user equipment according to an embodiment of the present invention
• FIG. 6 is a schematic diagram of a user equipment according to an embodiment of the present invention
• FIG. 7 is a schematic diagram of a UE receiving a MCCH notification according to a preferred embodiment 2 of the embodiment of the present invention
• FIG. 8 is a schematic diagram of a preferred embodiment 3 according to an embodiment of the present invention.
• the UE receives a schematic diagram of the MCCH notification.
• DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
• the sender sends an MCCH notification.
• the specific location ( occasion ) of the MCCH notification sent by the network side is implemented by two-level system (radio frame level and subframe level), which will be described in detail below.
• the wireless frame level follows the formula below:
• the SFN is the system frame number
• the MCCHn MP is the length of the 4th Modification Period of each corresponding MCCH in the cell.
• the notificationRepetitionCof is 4 ⁇ ?
• the number of times the MCCH notification information (ie, MCCH notification) is repeatedly sent, and the notificationOffset is the offset of the radio frame in which the MCCH notification information is sent.
• the subframe level sends the MCCH notification information to the specific subframe in the radio frame through the notification subframe.
• the network side notifies the above parameters to the UE through the system message or the MCCH message.
• FIG. 2 is a network side sending MCCH according to an embodiment of the present invention. The schematic diagram of the location of the notification is shown in Figure 2.
• the network side sends the MCCH notification according to the above formula. Similarly, the network side also informs the UE through the SIB13 of the BCCH.
• the UE can learn the corresponding parameters (for example, MCCH MP, notificationRepetitionCof, notificationOffset, and notification subframe of each MCCH) through the SIB 13. Through these parameters, the UE can calculate the specific MCCH notification sending position of the network side (for example, the base station) by using a formula.
• the UE may acquire the MP of the MCCH with the shortest duration of the MCCH MP indicated by the MP or BCCH of the MCCH channel in which the MBMS service is interested (or referred to as expected), and receive one or more MCCH notifications within the time interval of the MP. Message.
• FIG. 4 is a structural block diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 4, the user equipment includes: an obtaining module 42 and a receiving module 44. The jt ⁇ structure is explained.
• the obtaining module 42 is configured to obtain the MP of the MCCH of the MCCH channel where the desired MBMS service is located, or the MP of the MCCH that is the shortest MP duration indicated by the BCCH; the receiving module 44 is connected to the obtaining module 42 for receiving once during the time interval of the MP or Multiple MCCH notification messages.
• FIG. 5 is a block diagram of a preferred configuration of a user equipment according to an embodiment of the present invention. As shown in FIG. 5, the user equipment further includes a determining module 52, where the module is configured to determine whether a multimedia desired by the user equipment is configured on the multicast control channel MCCH. The broadcast multicast service MBMS service is used.
• the receiving module 44 is configured to receive one or more MCCH notifications in a time interval in which the MP of the MCCH of the MBMS service desired by the user equipment is configured, in the case that the determination result of the determination module 52 is YES.
• the message otherwise, the receiving module 44 receives one or more MCCH notification messages within the time interval of the MP of the MCCH with the shortest MP duration indicated by the BCCH.
• the receiving module 44 receives at least the MCCH notification message of the number of repeated transmissions NotificationRepetitionCof times within the duration interval of the MP; preferably, the receiving module 44 is further configured to: in the case of receiving the correct or expected MCCH notification message, in the MP The MCCH notification message is stopped during the time interval.
• FIG. 3 is a flowchart of a method for receiving an MCCH notification according to an embodiment of the present invention.
• the process includes the following steps S302 to S306: Step S302, the user equipment determines that it is interested (or Expected) MBMS business is Whether it is configured on a certain MCCH (that is, the user equipment determines that the multimedia broadcast multicast service MBMS service desired by the user equipment is configured on the multicast control channel MCCH).
• Step S304 If the user equipment determines that the MBMS service desired by the user equipment is configured on a certain MCCH, the user equipment receives one or more MCCH notification messages within a duration interval of the repair period MP of the MCCH indicated by the BCCH. Step S306, otherwise (ie, the user equipment determines that the multimedia broadcast multicast service MBMS service desired by the user equipment is not configured on the multicast control channel MCCH), and the user equipment is in the MCCH MP indicated by the BCCH, and the duration of the MP is the shortest. Receive one or more MCCH notification messages.
• the UE when implemented, when the UE knows that the MBMS service of interest is configured on a certain MCCH, the UE receives one or more MCCH notifications within the time interval of the MP of the MCCH, preferably, as long as the UE receives correctly
• the UE can stop receiving the MCCH notification in the MP of the MCCH.
• the UE may receive at least the notificationRepetitionCof MCCH notification in the MP of the MCCH. For example, when the UE does not correctly receive the MCCH notification corresponding to the MCCH that is of interest to the UE within a certain number of times, the UE may receive at least 4 notificationRepetitionCof times.
• the UE may receive one or more MCCH notifications at the time interval of the shortest MP in the MCCH indicated by the BCCH; Preferably, as long as the UE correctly receives the MCCH notification, the UE may stop receiving the MCCH notification within the MP (shortest MP) of the MCCH; preferably, at least the notificationRepetitionCoff times MCCH notification is received in the shortest MCCH MP. It should be noted that those MCCH notifications in the specific receiving modification period are determined by the UE. Description will be made below in conjunction with the preferred embodiments.
• Preferred Embodiment 1 an application in which one cell is overlapped by multiple MBSFN areas at the same time is described.
• There are two MCCHs in the cell that is, the cell is an overlapping coverage area of two MBSFN areas.
• the sender side network will meet the formula:
• a schematic diagram of a UE receiving a MCCH notification according to a preferred embodiment of the present invention the present embodiment will be described in detail below with reference to FIG.
• the UE calculates the MCCH notification location sent by the network side according to different MCCH MP, notificationRepetitionCoff, notificationOffset, and notification subframe.
• MCCH MP notificationRepetitionCoff
• notificationOffset notification subframe
• the timings of receiving MCCH notifications by UEs in different states are different, and the following describes them separately.
• UE1 has no selection range.
• the UE knows that the UE is interested in the service on the MCCH2, and receives one or more MCCH notifications in the 4 tampering period according to the MP length of the MCCH2 of 10.24s.
• the UE can be repaired.
• MCCH notifications are determined by the UE implementation. Considering that all MCCH notifications will be received in the UE3 of this embodiment, UE3 has no selection range.
• the sender side network will meet the formula according to the prior art. . ⁇ , min(MCCHl MP, MCCH2 MP, MCCH3 MP . MCCHn MP)
• the receiving end sends a MCCH notification information.
• FIG. 7 is a schematic diagram of the UE receiving the MCCH notification according to the preferred embodiment 2 of the embodiment of the present invention. The present example will be described in detail below with reference to FIG. 7.
• the UE calculates the network 1 j to send the MCCH notification location according to different MCCH MP, notificationRepetitionCoff, notificationOffset, and notification subframe.
• the timings of receiving MCCH notifications by UEs in different states are different, and the following describes each.
• MCCH notification Preferably, those MCCH notifications in the specific reception modification period are determined by the UE implementation. Considering that UE1 will receive all MCCH notifications in this example, UE1 has no selection range.
• MCCH notification preferably, specifically receiving the modification week Those MCCH notifications in the period are determined by the UE implementation. Considering that UE2 will receive all MCCH notifications in this example, UE2 has no selection range.
• the UE3 will receive all the transmitted MCCH notifications, preferably, specifically receive those in the tampering period.
• the MCCH notification is determined by the UE implementation.
• MCCH modification period is 5.12s
• the level parameter notification subframe #l sub- ⁇ .
• the sender side will meet the formula according to the prior art.
• Figure 8 is based on this A schematic diagram of a UE receiving a MCCH notification according to a preferred embodiment of the third embodiment of the present invention is described in detail below with reference to FIG. 8. It was Gen UE MCCH MP, notificationRepetitionCof, notificationOf set, notification subframe 1 j is calculated network transmitting MCCH notification position. In this example, the timings of receiving MCCH notifications by UEs in different states are different, and the following describes each.
• the UE does not know that the service it is interested in is on that MCCH: according to the smallest of the cells
• the UE2 will receive the transmitted MCCH notification in all, preferably, specifically receiving the ⁇ ⁇ tampering period.
• Those MCCH notifications are determined by the UE implementation. Considering that UE2 will receive all MCCH notifications in this example, UE2 has no choice range.
• the foregoing embodiments can implement different behaviors of different UEs to receive MBMS notification by distinguishing different UE states, so as to reduce the role of some UEs in receiving MCCH notification, and reduce the power consumption of the UE.
• the UE that does not receive the MBMS service and does not know the service of interest is based on the smallest MCCH 4 tampering period in the cell, at least equal to or receiving the notificationRepetitionCoff MCCH notification information; thus preventing the MCCH from being changed but Not discovered by the UE Health.
• modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
• the invention is not limited to any specific combination of hardware and software.
• the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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• 2009
  • 2009-12-09 CN CN200910211970.5A patent/CN102098621B/zh active Active
• 2010
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  • 2010-11-18 WO PCT/CN2010/078897 patent/WO2011069407A1/zh active Application Filing
  • 2010-11-18 US US13/258,882 patent/US8774078B2/en active Active

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