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WO2012019551A1 - Procédé, dispositif et système pour envoyer/recevoir des informations de facteur de probabilité d'accès - Google Patents

Procédé, dispositif et système pour envoyer/recevoir des informations de facteur de probabilité d'accès Download PDF

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Publication number
WO2012019551A1
WO2012019551A1 PCT/CN2011/078286 CN2011078286W WO2012019551A1 WO 2012019551 A1 WO2012019551 A1 WO 2012019551A1 CN 2011078286 W CN2011078286 W CN 2011078286W WO 2012019551 A1 WO2012019551 A1 WO 2012019551A1
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Prior art keywords
information
bits
dci format
mbms service
mbsfn area
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English (en)
Chinese (zh)
Inventor
苟伟
卢忱
马子江
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • the present invention relates to a Multimedia Broadcast Multicast Service (MBMS) statistical technique, and more particularly to a method, apparatus, and system for transmitting/receiving Access Probability Factor (PF) information.
  • MBMS Multimedia Broadcast Multicast Service
  • PF Access Probability Factor
  • the 3rd Generation Partnership Project (3GPP) proposes MBMS, which is a technology that transmits data from one data source to multiple targets, and implements the network (including the core).
  • Network and access network Sharing of resources increases the utilization of network resources (especially air interface resources).
  • the MBMS service defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service broadcast and multicast, and provide a variety of rich video, audio and multimedia services, which undoubtedly conforms to future mobile
  • 3G, 3rd Generation third-generation
  • the MBMS statistics process of the existing mechanism the MBMS statistics information is calculated by the MBMS service information and PF information, and other information. It is constructed (refer to the 3GPP 25.331 protocol), and the information is sent to the UE together in one information unit.
  • the counted MBMS service information and PF information and other information are simultaneously carried in an information unit such as MBMS Access Information, and the information unit passes through a multicast control channel (MCCH, Multicast Control Channel) is sent to the UE.
  • MCCH Multicast Control Channel
  • the setting of the PF information is mainly to prevent a large number of UEs from participating in the statistics of the MBMS service at the same time, which causes the uplink resources to be tight.
  • the PF information is a value, which can finally reflect a value between 0 and 1 (depending on the specific conversion method of the PF information value).
  • the integer specified in 3GPP 25.331 is from 0, and the interval is 32. , up to 960, plus a total of 32 values of 1000, one for each network side.
  • PF information For example, if the given integer is A, then a value between 0 and 1 is obtained by converting 2 - ( / ⁇ ) ; if the given integer is C, the UE that needs to participate in the feedback randomly generates a value between 0 and 1. The value is assumed to be ⁇ . If ⁇ is less than C, then the UE continues to complete the feedback, otherwise no feedback is performed during the access period.
  • the use of more detailed PF information can be described in the existing protocol 3GPP 25.331. It can be seen that the PF information is actually a threshold. When the value generated by the UE is less than the threshold, feedback is performed during the access period. Otherwise, no feedback is performed during the access period.
  • PF information needs to be sent multiple times, and each PF information may be different. Therefore, PF information belongs to information that changes faster.
  • the MCCH mechanism allows partial information to be updated during the MCCH modification period. For example, the MBMS Access Information in the MCCH is allowed to be updated. In practice, the PF information in the MBMS Access Information has changed. In this way, the existing mechanism can meet the requirement of fast update of PF information, so MBMS statistics and PF information can be placed together and sent in the MCCH.
  • a method for transmitting an access probability factor which uses a bit in a DCI format of a preset downlink control information to indicate an access probability factor PF information, where the DCI format is a fixed format, and the network side carries the PF information in the specified
  • the physical downlink control channel of the subframe is transmitted in the DCI format in the PDCCH.
  • the method further includes: setting an identifier for describing the current statistical process of the terminating network side, and setting the transmission in the bit of the DCI format.
  • the method further includes: setting the counted MBMS service information in a preset bit of the DCI format to transmit; and/or setting the multimedia broadcast multicast service single frequency network MBSFN area information in the DCI format in advance Set the bits to send.
  • the preset bits in the DCI format are:
  • the pre-set bits are used to represent the PF information
  • the first 5 bits in the DCI 1C are used to describe a PF information
  • the first 3 bits in the DCI 1C are used to describe one PF information, and the last 8 bits describe an MBMS service information; or, using the The first 5 bits in DCI 1C describe one PF information, and the next 6 bits describe an MBMS service information;
  • the pre-set bits are used to represent PF information and MBSFN area information
  • the first 5 bits in the DCI 1C are used to describe one PF information
  • the next 3 bits describe information in one MBSFN area.
  • the pre-set bits are used to represent PF information and statistical MBMS service information
  • the system bandwidth is greater than or equal to 5M
  • 5 bits are used to describe the PF information
  • 8 bits are used to describe the MBMS service information that is counted, and the remaining bits are reserved.
  • the value corresponding to the 3-bit corresponding to the MBSFN area information corresponds to the sequence index of the MBSFN area in the system information block 13 SIB13, and is used to indicate the PDCCH.
  • the PF information is used for the MBSFN area; or, when the PF information and the MBSFN area information are represented by using the preset bits, the value corresponding to the 3-bit corresponding to the MBSFN area information is equal to the MBSFN area in the SIB13.
  • the MCCH notification message indicates the value of the parameter, and is used to indicate that the PF information in the PDCCH is used for the MBSFN area corresponding to the MCCH notification message indication parameter.
  • the 8 bits information is a session ID of an MBMS service
  • the 6-bit information is an index of the MBMS service.
  • the network side transmits the information described in the bits of the fixed DCI format through the common retrieval space of the PDCCH.
  • a method for transmitting an access probability factor using bits in a DCI format of a preset downlink control information to indicate control information of an access probability factor PF information transmission, where the DCI format is a fixed format, and the network side will be a PF
  • the control information of the information transmission is transmitted in the DCI format in the PDCCH of the designated subframe.
  • the PF information bearer is transmitted in the physical downlink shared channel PDSCH.
  • the method further includes: transmitting the statistical MBMS service information and/or the control information transmitted by the MBSFN area information in the DCI format in the PDCCH of the designated subframe.
  • the statistical MBMS service information and/or MBSFN area information bearer is transmitted in the PDSCH.
  • the DCI format is DCI 1C;
  • the control information includes: an indication of the interval value, a resource block allocation, a modulation and coding mode, and a DVRB mapping of the distributed virtual resource block.
  • the control information includes: an indication of the interval value, resource block allocation , modulation coding mode and interval indication when the distributed virtual resource block DVRB is mapped.
  • the network side transmits the information described in the bits of the fixed DCI format through the common retrieval space of the PDCCH.
  • a method for receiving an access probability factor includes: receiving, by a user side, a PDCCH of a specified subframe; retrieving a fixed DCI format from the received PDCCH, and parsing the bits therein to obtain PF information.
  • the method further includes: the user side acquiring information of the designated subframe by receiving system broadcast information or a multicast control channel.
  • the acquiring the PF information specifically includes: the user side receiving the PDCCH of the specified subframe, retrieving the DCI format and parsing the bits therein, and directly acquiring the PF information; The user side uses the obtained PF information to complete its own statistical feedback.
  • the acquiring the PF information specifically includes: the user side receiving the PDCCH of the specified subframe, retrieving the DCI format from the network, and parsing the bits therein, and acquiring PF information and MBSFN area information; the PF information obtained by the user side application is the counted MBMS service of the MBSFN area identified by the obtained MBSFN area information.
  • the acquiring the PF information specifically includes: the user side receives the PDCCH of the specified subframe, and retrieves the DCI format from the network and parses the PDCCH.
  • the PF information obtained by the user-side application is the MBMS service corresponding to the obtained MBMS service information.
  • the bits in the DCI format are used on the network side to indicate PF information, MBSFN area information, and
  • the PDCCH information of the specified subframe is received by the user side, and the DCI format is retrieved and parsed therein.
  • the bit obtains control information, and receives one or more of corresponding PF information, MBSFN area information, and the counted MBMS service in the PDSCH according to the requirement of the control information; the user side uses the information to complete the statistical process, where the control information Including the indication of the interval value, resource block allocation, modulation coding mode and interval indication when DVRB mapping.
  • a system for transmitting/receiving an access probability factor mainly includes a transmitting unit and a receiving unit, where
  • a sending unit located on the network side, for indicating PF information by using a preset bit in a fixed DCI format, and transmitting the PF information in a DCI format in a PDCCH of a specified subframe;
  • the receiving unit is located at the user side, and is configured to receive a PDCCH of the specified subframe, retrieve a fixed DCI format from the received PDCCH, and parse the bits to obtain the PF information.
  • the sending unit is further configured to send an identifier for describing the current statistical process of terminating the network side to be set in a preset bit in the fixed DCI format; correspondingly,
  • the receiving unit is further configured to obtain an identifier used to describe the current statistical process of terminating the network side in the preset preset bits in the DCI format, and determine that the current statistical process ends.
  • the sending unit is further configured to send the counted MBMS service information in a preset bit in the fixed DCI format; accordingly,
  • the receiving unit is further configured to obtain the counted MBMS service information in the preset bits in the fixed DCI format, and use the obtained PF information to perform statistics on the obtained MBMS service corresponding to the collected MBMS service information. .
  • the sending unit is further configured to send the MBSFN area information in a preset bit in the fixed DCI format; accordingly,
  • the receiving unit is further configured to acquire the counted MBMS service information in the preset bits in the fixed DCI format; the obtained PF information is the obtained MBSFN area i or the MBSFN area i of the information identifier.
  • the statistics of the MBMS service are counted.
  • the network side is a base station, or a relay station, or a multi-cell multicast coordination entity MCE, or a multi-media
  • the broadcast multicast service center BMSC the user side is a user equipment or a relay station.
  • a system for transmitting/receiving an access probability factor mainly includes a transmitting unit and a receiving unit, where
  • control information for transmitting PF information, or control information for transmitting PF information and control information for transmitting MBMS service information and/or control information for MBSFN area information transmission at the fixed DCI Sent in the preset bits in the format; accordingly,
  • a receiving unit configured to receive a PDCCH of a specified subframe, retrieve a DCI format and parse the bit therein, and obtain control information; receive corresponding PF information, MBSFN area information, and MBMS to be counted in the PDSCH according to the requirement of the control information.
  • One or more of the services then use the information received from the PDSCH to complete the statistical process.
  • An apparatus for transmitting an access probability factor comprising: a sending unit at a network side, configured to use a preset bit in a fixed DCI format to represent PF information, and to carry PF information in a DCI format in a PDCCH of a specified subframe Sent in.
  • the sending unit is further configured to send an identifier for describing the current statistical process of terminating the network side to be set in a preset bit in the fixed DCI format.
  • the sending unit is further configured to send the counted MBMS service information in a preset bit in the fixed DCI format.
  • the sending unit is further configured to send the MBSFN area information in a preset bit in the fixed DCI format.
  • An apparatus for receiving an access probability factor comprising: a receiving unit at a user side, configured to receive a PDCCH of a specified subframe, retrieve a fixed DCI format from the received PDCCH, and parse the bits therein to obtain PF information.
  • the receiving unit is further configured to obtain an identifier used to describe the current statistical process of terminating the network side in the preset preset bits in the DCI format, and determine that the current statistical process ends.
  • the receiving unit is further configured to obtain the counted MBMS service information in the preset bits in the fixed DCI format, and use the obtained PF information to perform statistics on the obtained MBMS service corresponding to the collected MBMS service information. .
  • the receiving unit is further configured to acquire a preset bit in the fixed DCI format.
  • the statistics of the MBMS service information in the application; the PF information obtained by the application is used for statistics on the obtained MBSFN area i or the MBSFN area i of the information identifier or the statistical MBMS service.
  • the present invention includes the sending unit using the preset bits in the fixed DCI format to represent the PF information, and transmitting the PF information in the DCI format in the PDCCH of the specified subframe.
  • the receiving unit receives the PDCCH of the specified subframe, retrieves a fixed DCI format from the received PDCCH, and parses the bits therein to obtain PF information; and uses the PF information to perform statistics on the MBMS service of the MBSFN area indicated therein.
  • the PF information is not transmitted through the MCCH, and is applicable to the LTE system.
  • the PF information or the MBMS statistical information is transmitted based on the single cell mode by using the solution of the present invention.
  • the specific statistical process can be configured by each base station to implement different PF information of each base station, which is very flexible and accurate. Moreover, since the PF information is continuously configured, the number of UEs that are relatively accurate under the base station is obtained.
  • FIG. 1 is a schematic flow chart of a method for transmitting MBMS statistical information according to the present invention
  • FIG. 2 is a schematic flowchart of a method for receiving MBMS statistical information according to the present invention
  • FIG. 3 is a schematic structural diagram of a system for transmitting/receiving MBMS statistical information according to the present invention
  • FIG. 4 is a schematic diagram showing the use of bits of DCI 1C format as PF information according to the present invention
  • FIG. 5 is a schematic diagram of the use of the bits of the DCI 1C format for the PF information and the MBSFN area information according to the present invention.
  • 1 is a schematic flowchart of a method for transmitting MBMS statistical information according to the present invention. As shown in FIG. 1, the method includes:
  • Step 100 Express PF information by using bits in a format of a downlink control information (DCI, Downlink control information), where the DCI format used is fixed.
  • the format is preferably 1C (DCI 1C ) in the DCI format.
  • bits in the DCI 1C may also be used to describe the identifier of the current statistical process of terminating the network side. For example, one bit is reserved to indicate that the status of the bit indicates whether to terminate the MBMS statistics.
  • the MBMS service information that is counted is also indicated (i.e., set) in the preset bits of the DCI format; or, the Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) area information.
  • MSSFN Multimedia Broadcast Multicast Service Single Frequency Network
  • control information of the PF information transmission is indicated in the preset bits of the DCI format.
  • the PF information can be carried in the Physical Downlink Shared Channel (PDSCH). Transmission; or,
  • the PF information, and control information of the MBMS service information or the MBSFN area information transmission may be carried in the PDSCH; or
  • the PF information, the MBMS service information to be counted, and the control information for MBSFN area information transmission can be carried in the PDSCH.
  • system broadcast information such as system information block 13 (SIB13) or MCCH
  • BCCH Broadcast Control Channel
  • the designated subframe is preferably an MBSFN subframe or a unicast subframe.
  • the preset bits in the DCI format may be:
  • the bit When the bit is used to represent the PF information, as shown in Fig. 4, the first 5 bits in the DCI 1C are used to describe one PF information, and the remaining bits are reserved. Each small square in Fig. 4 represents one bit. In use, the reserved bits are transmitted along with, wherein the number M of bits used to describe the PF information depends on the possible number N of PF information, and the number M of bits used in the DCI 1C to describe the PF information The relationship with the number N of PF information satisfies:
  • the first 3 bits in DCI 1C describe a PF information
  • the next 8 bits describe an MBMS service information (such as the session ID describing a MBMS service), and the remaining bits are reserved
  • the first 5 bits can also be used to describe a PF information
  • the next 6 bits describe an MBMS service information (such as an index describing the MBMS service)
  • the remaining bits are reserved.
  • the reserved bits are sent along with them.
  • the DCI 1C uses 5 bits to describe the PF information, and uses 8 bits to describe the MBMS service information that is counted.
  • the remaining bits are reserved; or,
  • the bit When the bit is used to represent the PF information and the MBSFN area information, as shown in FIG. 5, the first 5 bits in the DCI 1C are used to describe one PF information, and the next 3 bits describe the information of one MBSFN area, and the remaining bits are reserved (required description
  • the order of the PF information and the MBSFN area information in the DCI format is not limited.
  • Each small square in Fig. 5 represents one bit.
  • the value corresponding to the 3-bit of the MBSFN area information is the sequence index of the MBSFN area in the corresponding SIB13 or the value of the 3-bit corresponding to the MBSFN area information is equal to the MCCH notification message indication parameter in the MBSFN area of the SIB13.
  • the value of the notificationIndicator-r9 is used to indicate that the PF information in the Physical Downlink Control Channel (PDCCH) is used for the MBSFN area or is used to indicate that the PF information in the PDCCH is the notificationIndicator- R9 corresponds to the MBSFN area used.
  • the reserved bits are transmitted along with; or, when one or more PF information is described using pre-set bits in the DCI 1C, or one or more PF information and the statistical MBMS service information are transmitted in the PDSCH
  • the control information includes an indication of the gap value, a resource block assignment, a modulation and coding scheme, and a distributed virtual resource block (DVRB, Distributed Virtual Resource Block).
  • the interval indication (for gap indication ) at the time of mapping. Or,
  • the control information includes an indication of the interval value, a resource block allocation, a modulation and coding scheme, and a distribution. Interval indication when virtual resource block mapping.
  • Step 101 The DCI format in which the network side carries the PF information in the PDCCH of the specified subframe. Sent in.
  • the network side transmits the information described in the fixed DCI format bits in step 100 through the common retrieval space of the PDCCH.
  • the network side is a base station, or a relay (relay) or a multi-cell/multicast coordination entity (MCE) or a Broadcast-Multicast-Service Centre (BMSC).
  • relay relay
  • MCE multi-cell/multicast coordination entity
  • BMSC Broadcast-Multicast-Service Centre
  • the step further includes: when transmitting the PF information, using the agreed Radio Network Temporary Identifier (RNTI) to scramble the fixed DCI format before sending.
  • RNTI Radio Network Temporary Identifier
  • the PF information is not transmitted through the MCCH and is applicable to the LTE system.
  • the PF information or the MBMS statistical information is transmitted based on the single cell mode by using the solution of the present invention.
  • the specific statistical process can be configured by each base station, and the PF information of each base station is configured differently, which is very flexible and Accurate; and because of the constant configuration of different PF information, the number of UEs that are more accurate under the base station is obtained.
  • the present invention provides a mechanism for transmitting PF information when supporting multiple MBSFN areas while performing MBMS statistics. Further, the present invention provides a way to terminate the MBMS statistics, which is more flexible and simpler than the prior art.
  • FIG. 2 is a flowchart of a method for receiving MBMS statistical information according to the present invention. As shown in FIG. 2, the method includes:
  • Step 200 The user side receives the PDCCH of the specified subframe.
  • the user side can be a User Equipment (UE) or a relay station.
  • UE User Equipment
  • the user side acquires information of the specified subframe by receiving system broadcast information or a multicast control channel, such as system information block 13 (SIB13) or MCCH.
  • SIB13 system information block 13
  • MCCH multicast control channel
  • Step 201 retrieve a fixed DCI format from the received PDCCH, and parse the bits therein to obtain PF information. In this way, the UE can use the PF information to perform statistics on the MBMS service of the MBSFN area indicated.
  • the PF information is sent by the network side, it is possible to further include the MBMS service information, or the MBSFN area information, and the like.
  • the network side uses the bits in the DCI format to represent the PF information
  • the user side receives the PDCCH of the specified subframe, retrieves the DCI format and parses the bits therein, and directly obtains the PF information; then the user side uses the obtained PF information to complete Its own statistical feedback;
  • the user side When the network side uses the bits in the DCI format to represent the PF information and the MBSFN area information, the user side receives the PDCCH of the specified subframe, retrieves the DCI format from the UE and parses the bits therein, and obtains the PF information and the MBSFN area information;
  • the PF information obtained by the application is used for statistics on the counted MBMS services of the MBSFN area identified by the obtained MBSFN area information;
  • the network side uses the bits in the DCI format to indicate the PF information and the statistical MBMS service information (the statistical MBMS service information is the session ID or index of the MBMS service that is counted)
  • the user side receives the PDCCH of the specified subframe,
  • the DCI format is retrieved and the bits are parsed, and the PF information and the MBMS service information that is collected are obtained.
  • the PF information obtained by the user side is used for statistics on the MBMS service corresponding to the obtained MBMS service information.
  • the user side When a bit in the DCI format indicates one or more control information in the PDSCH of one or more of the PF information, the MBSFN area information, and the counted MBMS service information, the user side receives the PDCCH of the designated subframe, and retrieves the DCI format therefrom. And parsing the bits therein, obtaining control information, and receiving one or more of the corresponding PF information, the MBSFN area information, and the counted MBMS service in the PDSCH according to the requirement of the control information; then the user side uses the information to complete the statistical process.
  • the control information includes an indication of the interval value, a resource block allocation, a modulation and coding mode, and an interval indication when the DVRB is mapped.
  • the user side before the user-required fixed DCI format, the user side further includes: performing a search (that is, a process of descrambling) using the agreed RNTI, and the specific implementation thereof belongs to a technology known to those skilled in the art, and details are not described herein again. Moreover, the method of its implementation is not intended to limit the scope of the invention.
  • a search that is, a process of descrambling
  • FIG. 3 is a schematic structural diagram of a system for transmitting/receiving MBMS statistical information according to the present invention. As shown in FIG. 3, the method mainly includes a sending unit and a receiving unit, where
  • the sending unit is located at the network side, and is configured to use the preset bits in the fixed DCI format to represent the PF information, and send the PF information in a DCI format in the PDCCH of the specified subframe.
  • a receiving unit located at the user side, for receiving a PDCCH of a specified subframe, retrieving a fixed DCI format from the received PDCCH, and parsing the bits therein to obtain PF information; using the PF information, the MBSFN area indicated by the SF information
  • the MBMS business is statistic.
  • the sending unit is further configured to send the identifier for describing the current statistical process of the terminating network side to be sent in a preset bit in the fixed DCI format; correspondingly, the receiving unit is further configured to acquire the The identifier of the pre-set bit in the fixed DCI format used to describe the current statistical process of terminating the network side determines that the current statistical process ends.
  • the sending unit is further configured to send the counted MBMS service information representation in a preset bit in the fixed DCI format; accordingly,
  • the receiving unit is further configured to obtain the counted MBMS service information in the preset bits in the fixed DCI format, and use the obtained PF information to perform statistics on the MBMS service corresponding to the obtained MBMS service information.
  • the sending unit is further configured to send the MBSFN area information representation in a preset bit in the fixed DCI format; correspondingly,
  • the receiving unit is further configured to obtain the counted MBMS service information in the preset bits in the fixed DCI format; the obtained PF information is the MBSFN area i or the counted MBMS of the obtained MBSFN area information identifier. Business statistics.
  • Another implementation manner of the sending unit may be: control information for transmitting PF information, or control information for transmitting PF information, and control information of MBMS service information transmission and/or control of MBSFN area information transmission.
  • Information representation is sent in pre-set bits in the fixed DCI format; accordingly,
  • a receiving unit configured to receive a PDCCH of a specified subframe, retrieve a DCI format and parse the bit therein, and obtain control information; receive corresponding PF information, MBSFN area information, and MBMS to be counted in the PDSCH according to the requirement of the control information.
  • One or more of the services then use the information received from the PDSCH to complete the statistical process.
  • the present invention also provides an apparatus for transmitting PF information, including the transmitting unit of FIG. 3, the apparatus for transmitting PF information being located at a network side, such as a base station or a relay station.
  • the present invention also provides an apparatus for receiving PF information, including the receiving unit of FIG. 3, the apparatus for receiving PF information is located at a user side, such as a UE or a relay station.
  • a user side such as a UE or a relay station.
  • the PF information is represented by a preset bit in the DCI 1C format, and assuming that 32 values of the PF information are available for selection, the corresponding use of 5 bits respectively represents 32 bits of the value representation.
  • Table 1 The situation is shown in Table 1:
  • the data in Table 1 When the data in Table 1 is specifically used, it can be expanded by 10000 times at the same time, and then the UE randomly generates one of 1 to 10000 (including 10000), and then if the value generated by the UE is smaller than the value indicated by the PF information, then The UE performs MBMS feedback, otherwise MBMS feedback is not performed. Continue with the above process on the next PF message.
  • the specific position of the 5 bits in the DCI 1C in Table 1 is preferably the first 5 bits. Of course, other positions may be selected, and the remaining bits in the DCI 1C are reserved, and are transmitted along with the transmission.
  • the network side specifies the subframe of the PF information (that is, the designated subframe) by using the SIB13 or the MCCH information in the system broadcast information.
  • the UE uses the PDCCH in the public search area of the PDCCH of the specified subframe.
  • the pre-agreed RNTI performs the search, retrieves the DCI 1C, and then parses the bit information.
  • the UE can obtain the size of the PF information, and obtain the PF information value by looking up the table; the UE completes its own information through the PF information. Feedback statistics.
  • the network side may also add a CRC check bit on the DCI 1C bit content, then scramble the check bit using the agreed RNTI, and then send it to the UE.
  • the PF information is used in a few bits. Depending on the number of PF information, for example, the number of PF information is N, then the number of bits of the PF information should be equal to 1. g Rounded up value.
  • the PF information and the MBSFN area information are represented by using preset bits in the DCI 1C format, and it is assumed that the PF information has 32 values to be selected, and the corresponding 5 bits respectively represent 32 values of the bits. The situation shown is shown in Table 1.
  • the data in Table 1 When the data in Table 1 is specifically used, it can be expanded by 10000 times at the same time, and then the UE randomly generates one of 1 to 10000 (including 10000), and then if the value generated by the UE is smaller than the value indicated by the PF information, then The UE performs MBMS feedback, otherwise MBMS feedback is not performed. Continue with the above process on the next PF message.
  • the specific position of the 5 bits in Table 1 in the DCI 1C is preferably the first 5 bits, and of course other positions can be selected.
  • the ACL information is used to describe which MBSFN area is configured, that is, the 3-bit information is used to represent the MBSFN area information, and the 3-bit corresponding value may be used to indicate the index of the sequence list in the MBSFN area in the SIB13.
  • the value of the 3-bit corresponding to the MBSFN area information is equal to the value of the notificationIndicator-r9 in the MBSFN area in the SIB13; since the MBSFN area and the MCCH in the LTE are corresponding, the index of the occurrence of the MCCH may also be indicated.
  • the 5 bit PF information and the 3 bit MBSFN area information are not distinguished in the DCI 1C.
  • the remaining bits in DCI 1C are reserved and are sent along with the transmission.
  • the network side specifies the subframe of the PF information (that is, the designated subframe) by using the SIB13 or the MCCH information in the system broadcast information.
  • the UE obtains the network side to initiate the statistical signaling, the UE is in the public search area of the PDCCH of the specified subframe.
  • the RNTI is used to perform the retrieval to retrieve the DCI 1C, and then the bit information is parsed, and the PF information and the MBSFN area information are obtained through the agreed bits.
  • the UE completes its own feedback statistics through the PF information and the MBSFN area information.
  • the network side may also add a CRC check bit on the DCI 1C bit content, and then scramble the check bit using the agreed RNTI, and then send it to the UE.
  • the PF information uses several bits, depending on the number of possible final PF information, for example, the number of PF information is N, then the number of bits of the PF information should be This is equal to l. g Rounded up value.
  • the third embodiment uses the bits in the DCI 1C format to represent the PF information, the MBSFN area information, and the control information transmitted in the PDSCH of the MBMS service information being counted.
  • the control information transmitted by the DCI 1C in the PDCCH at this time includes the following contents: an indication of the interval value, a resource block allocation, a modulation and coding mode, and an interval indication when the DVRB is mapped, and the control information may completely describe a data packet in the
  • the network side can use the PF information, the MBSFN area information, and the counted MBMS service information as one data packet, and use the configuration of the parameters in the control information.
  • the data packet including the PF information, the MBSFN area information, and the counted MBMS service information is scheduled to be transmitted in the PDSCH.
  • the data in Table 1 When the data in Table 1 is specifically used, it can be expanded by 10000 times at the same time, and then the UE randomly generates one of 1 to 10000 (including 10000), and then if the value generated by the UE is smaller than the value indicated by the PF information, then The UE performs MBMS feedback, otherwise MBMS feedback is not performed. Continue with the above process on the next PF message.
  • the network side specifies the subframe of the PF information (that is, the designated subframe) by using the SIB13 or the MCCH information in the system broadcast information. After the UE obtains the network side to initiate the statistical signaling, the UE is in the public search area of the PDCCH of the specified subframe.
  • the UE can obtain the PF information, the MBSFN area information, and the MBMS service information that is counted; The MBSFN area information and the counted MBMS service information complete their own feedback statistics.
  • the network side may also add a CRC check bit to the DCI 1C bit content, and then scramble the check bit using the agreed RNTI, and then send it to the UE.
  • the PF information uses several bits, depending on the number of possible final PF information, for example, the number of PF information is N, then the number of bits of the PF information should be This is equal to l. g Rounded up value.
  • the fourth embodiment uses bits in the DCI 1C format to represent PF information and statistical MBMS service information; or uses bits in the DCI 1C format to represent PF information, MBSFN area information, and statistical MBMS service information.
  • bits in the DCI 1C format are used to represent the PF information and the MBMS service information to be counted is taken as an example.
  • the number of bits in the DCI 1C format is related to the bandwidth of the system, that is, the larger the bandwidth, the more bits in the DCI 1C format.
  • the data in Table 1 When the data in Table 1 is specifically used, it can be expanded by 10000 times at the same time, and then the UE randomly generates one of 1 to 10000 (including 10000), and then if the value generated by the UE is smaller than the value indicated by the PF information, then The UE performs MBMS feedback, otherwise MBMS feedback is not performed. Continue with the above process on the next PF message.
  • the specific position of the 5 bits in Table 1 in the DCI 1C is preferably the first 5 bits, and of course other positions can be selected.
  • the agreed-up 3 bits (which may be other bit numbers, determined according to the maximum value of the maximum number of MBMS services that can be accommodated in one statistical message) is used to describe the MBMS service information that is counted, that is, the 3-bit information is used to represent the statistics.
  • the value corresponding to the 3 bit can be used to represent the index of the MBMS service sequence list in the statistics message.
  • a PF information can be configured for one MBMS service.
  • the remaining bits in DCI 1C are reserved and are sent along with the transmission.
  • the network side specifies the subframe of the PF information (that is, the designated subframe) by using the SIB13 or the MCCH information in the system broadcast information.
  • the UE After the UE obtains the network side to initiate the statistical signaling, the UE is in the public search area of the PDCCH of the specified subframe. Searching using the pre-agreed RNTI to retrieve the DCI 1C, and then parsing the bit information therein, and learning the PF information and the statistical MBMS service information through the agreed bits; the UE completes its own feedback through the PF information and the statistical MBMS service information. statistics.
  • the network side adds a CRC check bit to the DCI 1C bit content, and then scrambles the check bit of the agreed RNTI pair, and then sends the check bit to the UE.
  • the network side may further add a CRC check bit to the DCI 1C bit content, and then scramble the check bit using the agreed RNTI, and then send it to the UE.
  • the PF information uses several bits, and the number of bits of the PF information should be equal to l, for example, if the number of PF information is N, the number of bits of the PF information should be equal to 1. g Rounded up value.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un dispositif et un système permettant d'envoyer/recevoir des informations de facteur de probabilité d'accès. Le procédé d'envoi consiste à : utiliser un bit dans un format d'Informations de Commande de Liaison Descendante (DCI, Downlink Control Information) prédéfini pour représenter des informations de Facteur de Probabilité (PF, Probability Factor) d'Accès, le format DCI étant un format fixe, et un côté réseau acheminant les informations PF au format DCI d'un Canal Physique de Commande Descendant (PDCCH, Physical Downlink Control Channel) d'une sous-trame spécifiée pour l'envoi. Selon la solution proposée par la présente invention, les informations PF ne sont pas envoyées par l'intermédiaire d'un canal MCCH, comme cela est le cas pour un système LTE (Evolution à Long Terme). De plus, du fait de l'utilisation de la solution de la présente invention, les informations PF ou des informations statistiques MBMS sont envoyées sur la base d'un mode à cellule unique. Dans un traitement statistique spécifique, chaque station de base peut configurer des paramètres afin que chaque station de base configure de manière très souple et précise des informations PF différentes. De plus, en configurant en continu différentes informations PF, le nombre obtenu d'UE (Equipements d'Utilisateurs) rattachés à la station de base est plus précis.
PCT/CN2011/078286 2010-08-13 2011-08-11 Procédé, dispositif et système pour envoyer/recevoir des informations de facteur de probabilité d'accès Ceased WO2012019551A1 (fr)

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