[go: up one dir, main page]

WO2006094455A1 - Procede pour la dispersion des frequences de couche de ue dans le service de diffusion/multidiffusion multimedia - Google Patents

Procede pour la dispersion des frequences de couche de ue dans le service de diffusion/multidiffusion multimedia Download PDF

Info

Publication number
WO2006094455A1
WO2006094455A1 PCT/CN2006/000340 CN2006000340W WO2006094455A1 WO 2006094455 A1 WO2006094455 A1 WO 2006094455A1 CN 2006000340 W CN2006000340 W CN 2006000340W WO 2006094455 A1 WO2006094455 A1 WO 2006094455A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency layer
algorithm
layer dispersion
indication
dispersion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2006/000340
Other languages
English (en)
Chinese (zh)
Inventor
Hao Hu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2006094455A1 publication Critical patent/WO2006094455A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

Definitions

  • the present invention relates to a multimedia broadcast/multicast service (MBMS) implementation technology, and more particularly to a method for frequency layer decentralization (FLD) of a user equipment (UE) in a multimedia broadcast/multicast service.
  • MBMS multimedia broadcast/multicast service
  • FLD frequency layer decentralization
  • CBS Cell Broadcast Service
  • MBMS Multimedia Broadcast/Multicast Service
  • Point services realize network resource sharing, and improve the utilization of network resources, especially the utilization of air interface resources.
  • MBMS defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service multicast and broadcast, which is undoubtedly compliant The trend of future mobile data development.
  • a mobile network function entity the Broadcast Multicast Service Center BM-SC
  • BM-SC Broadcast Multicast Service Center
  • UE User Equipment
  • UTRAN Terrestrial Radio Access Network
  • GERAN GE Radio Access Network
  • SGSN SGSN
  • GGSN GGSN
  • FIG. 1 is a schematic diagram of a wireless network structure supporting multicast/broadcast services.
  • the Broadcast/Multicast Service Center (BM-SC) is connected to the Gateway General Packet Radio Service (GPRS) Support Node (GGSN) via a Gmb interface or a Gi interface, and one BM-SC can be connected to multiple GGSNs.
  • GPRS General Packet Radio Service
  • the GGSN is connected to the Serving GPRS Support Node (SGSN) through the Gn/Gp interface, and one GGSN can be connected to multiple SGSNs; the SGSN can communicate with the Universal Mobile Telecommunications System (UMTS) terrestrial radio access network through the Iu interface ( UTRAN is connected, then UTRAN is connected to the communication terminal through the Uu interface, and the SGSN can also be connected to the Global System for Mobile Communications (GSM) Enhanced Radio Access Network (GERAN) through the Iu/Gb interface, and then the GERAN is connected to the communication terminal through the Um interface.
  • UMTS Universal Mobile Telecommunications System
  • GSM Global System for Mobile Communications
  • GERAN Enhanced Radio Access Network
  • MBMS includes multicast mode and broadcast mode.
  • the difference between the multicast service and the broadcast service is only that: The multicast service only sends corresponding information to users who subscribe to certain information, and the broadcast service sends information to all users in the wireless network.
  • the multicast mode requires the user to subscribe to the corresponding multicast group, perform service activation, and generate corresponding accounting information. Because the multicast and broadcast modes differ in business requirements, their business processes are different.
  • the MBMS service has two modes when transmitting between UTRAN and UE: point-to-multipoint (PTM) mode and point-to-point (PTP) mode.
  • PTM point-to-multipoint
  • PTP point-to-point
  • the PTM mode transmits the same data through the MBMS point-to-multipoint traffic channel (MTCH), and all UEs that join the multicast service or are interested in the broadcast service can receive;
  • MTCH point-to-multipoint traffic channel
  • DTCH dedicated transport channel
  • the process includes: Service announcement, Session Start, MBMS notification, Data transmission. Transfer ), Session End process.
  • the Service announcement process is used by the BM-SC to announce the services currently available.
  • the BM-SC prepares the data transmission and informs the network to establish the bearer resources of the corresponding core network (CN) and the universal terrestrial radio access network (UTRAN).
  • CN core network
  • UTRAN universal terrestrial radio access network
  • the MBMS notification procedure is used to inform the UE that the MBMS multicast session is about to begin.
  • the BM-SC transmits data to the UE through the bearer resources established during the start of the session.
  • the Session Stop procedure is used to release the bearer resources established by the Session Start process.
  • the bearer context of the MBMS service is saved in each MBMS service node, and the bearer context is activated during the Session Start process and is deactivated during the Session Stop process.
  • the process includes: Subscription, Service announcement, Joining, Session Start, MBMS. MBMS notification, Data transfer, Session Stop, and Leaving procedures.
  • the Subscription process is used to allow users to subscribe to the required MBMS service in advance.
  • the service announcement process is used by the BM-SC to announce the services currently available.
  • the Joining process is an MBMS multicast service activation process. In the Joining process, the UE notifies the network that it is willing to become a member of the current multicast group and receives multicast data of the corresponding service.
  • the Joining process creates a record of UE information in the network and the UE joining the multicast group.
  • the BM-SC prepares the data transmission and notifies the network to establish the corresponding
  • the MBMS notification procedure is used to inform the UE that the MBMS multicast session is about to begin.
  • the BM-SC transmits data to the UE through the bearer resources established during the start of the session.
  • the Session Stop procedure is used to release the bearer resources established by the Session Start process.
  • the Leaving process causes subscribers in the group to leave the multicast group, ie the user no longer receives multicast data, and the process deletes the corresponding MBMS UE context.
  • the UTRAN requests the UE to reselect a frequency layer, and the MBMS service will be transmitted on this frequency layer.
  • the network transmits this information to the UE over the MCCH channel.
  • This process is called Frequency Layer Convergence (FLC).
  • FLC Frequency Layer Convergence
  • the MBMS system since the FLC process may be performed, many UEs that have received the MBMS service are re-selected to a certain frequency layer, but if so many UEs perform non-MBMS services, then This can cause significant congestion in the system, so the MBMS system has devised another process called the Frequency Layer Decentralization Process (FLD).
  • FLD Frequency Layer Decentralization Process
  • the network sends an indication to the UE whether to perform FLD on the MCCH channel.
  • the protocol only specifies whether the system needs to perform the FLD process.
  • the process is as follows:
  • the network side instructs the UE to perform an FLD process
  • the UE After receiving the FLD instruction, the UE performs a frequency layer dispersion process, and reselects a frequency to perform frequency layer dispersion.
  • the method of selection is to select one of the selectable frequencies by a pseudo-random function algorithm.
  • the UE stores an algorithm of a pseudo-random function, and after receiving the FLD instruction, the frequency layer dispersion process is performed.
  • the network side can distribute the UE to different frequency layers through the FLD process, but the method of how the UE can be effectively dispersed to different frequency layers through the FLD process is only a pseudo-random function algorithm.
  • the drawback of this method is that it does not take into account various network conditions such as the distribution of UEs in the network, the distribution of cells, the quality of cell channels, congestion, and the like. Since the network situation is complex and variable, it is obvious that there is only one algorithm, and it is impossible to achieve a good frequency layer dispersion effect for all cases. For example: It may cause the UE to perform two cell reselection procedures. Because the randomly selected cell may not be a good cell for some UEs, the UE may perform another cell selection process.
  • the UE does not immediately perform cell reselection based on the frequency determined by the pseudo-random function, the UE has to re-measure to select a suitable cell, causing the UE to perform a pseudo-random process in vain, resulting in a large delay.
  • the existing FLD solution is only that the UE itself decides to use a fixed frequency layer dispersion algorithm to perform frequency layer dispersion, which cannot be adapted to the complex changes of the network.
  • the main object of the present invention is to provide a method for user equipment to perform frequency layer dispersion in a multimedia broadcast/multicast service, in which the UE can flexibly select and use a frequency layer dispersion algorithm.
  • the process of dispersion includes the following steps:
  • the UE selects a frequency layer algorithm according to the indication sent by the network side to perform frequency layer dispersion.
  • the time required for the frequency layer decentralization operation may be: in the process of transmitting the multimedia broadcast/multicast service data on the network side; or in the end of the multimedia broadcast/multicast service session; or in the multimedia broadcast/multicast After the scheduled time for the end of the business session.
  • the network side may send an indication to the UE whether to perform frequency layer dispersion before or at the same time as the frequency layer decentralization algorithm is used to be sent to the UE.
  • the UE first performs according to whether An indication of frequency layer dispersion determines whether frequency layer dispersion is performed; if so, determining a frequency layer dispersion algorithm for performing frequency layer dispersion according to the indication, and finding a determined frequency layer dispersion algorithm from the stored frequency layer dispersion algorithm, using the frequency
  • the layer decentralization algorithm performs frequency layer dispersion; otherwise, the frequency layer decentralization operation is not performed according to the indication.
  • the method of transmitting to the user equipment UE whether to perform frequency dispersion and indicating which one or which frequency layer dispersion algorithms are used for the frequency layer dispersion may be: a control message through a point-to-multipoint control channel or a broadcast channel. Indicated in the middle or by two control messages.
  • a plurality of indication policies may be set and stored on the network side, and each indication policy includes: in which network case, which one or which frequency layer dispersion algorithms are used;
  • the network side Before the network side sends the indication, it determines whether the current network condition complies with the network condition indicating the policy. According to the policy, the UE is instructed to use the frequency layer dispersion algorithm in the policy to perform frequency layer dispersion.
  • the network situation may include, but is not limited to, one or more of the following: the number and distribution of the UE in the cell, the distribution of the cell, the channel quality of the cell, the congestion, the frequency usage of each cell, and the frequency planning. happening.
  • step A the network side indicates which frequency layer dispersion algorithm is used by the UE to perform the frequency layer.
  • the method for determining the frequency layer dispersion algorithm for performing frequency layer dispersion in step B may be:
  • the frequency layer dispersion algorithm in the indication is determined as an algorithm for spreading the frequency layer.
  • step A when the network side indicates which frequency layer dispersion algorithm is used by the UE to perform frequency layer dispersion, the method for determining the frequency layer dispersion algorithm for performing frequency layer dispersion in step B may be:
  • a frequency layer dispersion algorithm is selected from several frequency layer dispersion algorithms in the indication, and is determined as an algorithm for performing frequency layer dispersion.
  • the method for selecting a frequency layer dispersion algorithm from the several frequency layer dispersion algorithms in the indication may be: randomly selected or selected in the order of reception or selected in a preset selection order.
  • a function algorithm that can be uniformly selected can be used for random selection. ..
  • the function algorithm capable of uniform selection may be a hash algorithm or a random function algorithm.
  • the network may further indicate the priority order of the UEs or the conditions or selection rules for the UE to select from the algorithms. Or which feature of the UE uses the frequency layer dispersion algorithm of each of the several frequency layer dispersion algorithms;
  • the UE selects a frequency layer dispersion algorithm according to the priority selection order in the indication, and determines an algorithm for performing frequency layer dispersion; or uses the frequency layer dispersion according to the selection condition in the indication or the selection rule or the characteristics of the UE respectively. Which frequency layer dispersion algorithm of the algorithm selects a frequency layer dispersion algorithm and determines an algorithm for performing frequency layer dispersion.
  • step A when the network side indicates which frequency layer decentralization algorithm is used by the UE to perform frequency layer dispersion, the UE may further indicate which characteristics have used the frequency layer respectively. Which frequency layer dispersion algorithm of the algorithm is used;
  • the UE determines, according to its own condition, which frequency layer decentralization algorithm should be used according to its own condition, and determines a frequency layer dispersion algorithm for performing frequency layer dispersion.
  • the method for indicating which of the characteristics of the UE respectively uses the frequency layer decentralization algorithm of the frequency layer decentralization algorithms may be: indicating different frequency layer dispersion algorithms for UEs of different cells;
  • the UE determines, according to the indication, a frequency layer dispersion algorithm corresponding to the cell in which the cell is located as a frequency layer dispersion algorithm for performing frequency layer dispersion.
  • step A when the network side indicates which frequency layer decentralization algorithm is used by the UE to perform frequency layer dispersion, the selection order of the UEs may be further indicated.
  • the UE determines all or part of the algorithms as the algorithm for performing frequency layer dispersion according to the indication, and performs multiple frequency layer dispersion according to the selection order in the indication.
  • the method of indicating which one or which frequency layer dispersion algorithms are used for frequency layer dispersion may be: using binary data to indicate various frequency layer dispersion algorithms;
  • the network side and the UE use protocol default values to determine which binary data indicates which frequency layer dispersion algorithm is used;
  • the network side further sends binary data indication meaning information to the UE, and the UE learns, according to the information, which binary data indicates which frequency layer dispersion algorithm.
  • the step B may further include: after receiving the indication, the UE performs a probability check on the one or more frequency layer dispersion algorithms in the indication respectively;
  • the method for determining the frequency layer dispersion algorithm for performing frequency layer dispersion is as follows: the frequency layer dispersion algorithm that passes the probability check in the indication is determined as the frequency layer dispersion algorithm for performing frequency layer dispersion;
  • the UE randomly selects a frequency layer dispersion algorithm according to its own situation or a predetermined selection method.
  • the method for the probability check may be: the network side sends a check probability factor to the UE for each frequency layer decentralization algorithm in the indication; after receiving the network side indication, the UE generates one for each frequency layer dispersion algorithm in the indication. The random number is compared with the corresponding check probability factor received from the network side, and if the random number is greater than the check probability factor, the check passes; otherwise, the calibration fails.
  • the network side may send different check probability factors to the UE according to a predetermined priority or selection order for different frequency layer dispersion algorithms in the indication.
  • the frequency layer dispersion algorithm may include, but is not limited to, the following algorithms: a pseudo random function algorithm, a hash function algorithm, an algorithm for spreading frequencies to frequencies before frequency layer aggregation, and a cell reselection algorithm.
  • the user equipment performs the frequency layer dispersion method, and the multiple frequency layer dispersion algorithms are stored in the UE, and the network side not only instructs the UE to perform frequency layer dispersion, but also Instructing the UE to use which one or more frequency layer dispersion algorithms to perform frequency layer dispersion; the UE selects a frequency layer dispersion algorithm according to the indication to perform frequency layer dispersion. Therefore, the UE can flexibly select and use the frequency layer dispersion algorithm to adapt to different network conditions.
  • the network side can control the random selection of the UE, so that the distribution of the entire network user is more balanced.
  • Figure 1 is a schematic diagram of a wireless network structure supporting multicast/broadcast services
  • Figure 2 shows the complete process of receiving a MBMS broadcast service by the user
  • Figure 3 shows the complete process for a user to receive a certain MBMS multicast service
  • 4 is a schematic diagram of a MCCH channel scheduling period
  • FIG. 5 is a flowchart of processing a frequency layer dispersion process according to a first preferred embodiment of the present invention
  • FIG. 6 is a flowchart of a frequency layer dispersion process according to a second preferred embodiment of the present invention
  • FIG. 7 is a flowchart of a frequency layer dispersion process according to a third preferred embodiment of the present invention
  • FIG. 8 is a flowchart of a frequency layer dispersion process according to a fourth preferred embodiment of the present invention
  • the user equipment performs frequency layer dispersion.
  • the general inventive idea is: storing two or more frequency layer dispersion algorithms in the UE, and the network side needs to perform frequency layer dispersion.
  • the UE is sent an indication of which frequency layer spreading algorithm is used to perform frequency layer dispersion; after receiving the indication, the UE performs frequency layer dispersion according to the indication.
  • the network side may send an indication to the UE in which one or more frequency layer decentralization algorithms or/and whether to perform frequency layer dispersion in the process of transmitting the multimedia broadcast/multicast service data;
  • the UE is sent an indication of which one or which frequency layer decentralization algorithms are used or/and whether the frequency is dispersed; or may be sent to the UE after a predetermined time of ending the multimedia broadcast/multicast service session.
  • the UTRAN sends the above indication to the UE according to whether the frequency aggregation operation has been performed.
  • the network side indicates to the UE which one or which frequency layer decentralization algorithms are used for the frequency layer decentralization.
  • the specific method is as follows: Set and store multiple indication policies on the network side, in each indication policy. Including: in which network case, which kind of frequency layer decentralization algorithm is used; before the network side issues an indication, it is determined that the current network condition complies with the network condition indicating the policy, and according to the policy, the UE is instructed to adopt Frequency layer in the strategy
  • the decentralized algorithm performs frequency layer dispersion.
  • the UE stores a pseudo-random function algorithm, a hash function algorithm, an algorithm for spreading frequency to a frequency before frequency layer convergence, and a cell re-selection algorithm. In practical applications, it can be other various frequency layer dispersion algorithms.
  • a variety of indication policies are stored in the UTRAN on the network side. For example, according to the current number and distribution of the UE in the cell, the cell distribution condition of the cell, the channel quality, the congestion, the frequency usage of each cell, and the frequency planning situation, the UE is instructed to adopt the pseudo-random function in the above algorithm.
  • the algorithm, or the above algorithm for spreading the frequency to the frequency before the frequency layer is aggregated, or first adopting the pseudo-random function algorithm and then adopting the hash function algorithm and the like.
  • These indication policies can be set and stored by the developer according to different network conditions, and can be added or deleted during system maintenance.
  • the frequency layer dispersion process of this embodiment is a flowchart of the frequency layer dispersion process according to the first preferred embodiment of the present invention. The process includes the following steps:
  • Step 501 The UTRAN receives the session end request of the MBMS service sent by the CN, and determines that the frequency layer convergence operation is performed on the MBMS service, and sends an indication message for performing the frequency layer scatter operation to the UE. If it is not necessary to perform a frequency layer layering operation, an indication that the frequency layer is not dispersed may also be sent to the UE.
  • Step 502 The UTRAN determines, according to the network condition, the network condition indicating the policy, and sends the indication information of the one or more frequency layer dispersion algorithms to the UE according to the network policy. It is assumed that this embodiment instructs the UE to perform frequency layer dispersion using a hash function algorithm.
  • the instructing the UE to perform the frequency layer decentralization operation and indicating which one or more frequency layer decentralization algorithms are used are respectively sent to the UE one before and after the two control messages. In actual application, it can also be sent to the UE simultaneously in the same control message.
  • the indication control information can be sent over a Point-to-Multipoint Control Channel (MCCH) or a Broadcast Channel (BCH).
  • MCCH Point-to-Multipoint Control Channel
  • BCH Broadcast Channel
  • the binary data or other means may be used to indicate which one or which frequency layer dispersion algorithms are used by the UE for frequency layer dispersion. If binary data is used, the UTRAN may further send binary data indication meaning information to the UE, and the UE learns, according to the information, which binary data indicates which frequency layer dispersion algorithm, and the information may be sent separately or in the above control message; The UTRAN and the UE may also use the protocol default value to specify which binary data indicates which frequency layer is to be distributed. In this case, the network side does not need to retransmit the binary data indication meaning information.
  • the binary data of the pseudo-random function algorithm is 01; the binary data of the hash function algorithm is 10, and 00 means that the frequency layer decentralization operation is not performed.
  • Step 503 The UTRAN sends a check probability factor of 0 to 1 to the UE.
  • Step 504 After receiving the foregoing indication by the UTRAN, the UE determines to perform frequency layer dispersion, and first performs a probability check on the frequency layer dispersion algorithm corresponding to the indication by using a check probability factor.
  • the UE If the UE receives an indication that frequency layer dispersion is not performed, the UE does not perform the rate check or perform the frequency layer dispersion operation according to the indication.
  • the UE After receiving the foregoing indication by the UTRAN, the UE generates a random number of 0 ⁇ 1, compares it with the check probability factor received from the network side, and if the random number is greater than the check probability factor, the check passes; Otherwise the verification does not pass.
  • Step 505 The UE determines whether the verification is passed. If yes, step 506 is performed; otherwise, step 507 is performed.
  • Probability checking is an optional process. In practice, probabilistic checking is also not possible.
  • the probability check is performed on the indication.
  • the probability check may be performed separately on one or more frequency layer decentralization algorithms in the indication; the decentralized algorithm is to be referred to; if the frequency layer decentralization algorithm in the indication fails to pass the probability check, the UE according to its own situation or predetermined
  • the selection method selects a frequency layer dispersion algorithm.
  • the method for probabilistic checking may be: the network side sends a check probability factor to the UE for each frequency layer decentralization algorithm in the indication; after receiving the network side indication, the UE generates one for each frequency layer decentralization algorithm in the indication. The random number is compared with the corresponding check probability factor received from the network side, and if the random number is greater than the check probability factor, the check passes; otherwise, the check fails.
  • the network side sends different check probability factors to the UE according to a predetermined priority or selection order for different frequency layer dispersion algorithms in the indication.
  • Step 506 The UE determines, according to the indication message that the frequency layer is dispersed by using the hash function algorithm received from the UTRAN, that the algorithm is a frequency layer dispersion algorithm for performing frequency layer dispersion, and finds a hash function algorithm from the stored frequency layer dispersion algorithm.
  • the hash function algorithm is used to determine the dispersed frequency, and the frequency layer is dispersed to end the process.
  • Step 507 The UE selects a frequency layer dispersion algorithm according to its own situation or a predetermined selection method, and performs frequency layer dispersion by using the frequency determined by the selected frequency layer dispersion algorithm.
  • the UE may determine according to the strength of the neighboring cell frequency signal, the MBMS service provided by the neighboring cell, and the like. For example, if the cell frequency signal before the current frequency convergence is the strongest, the frequency is dispersed to the frequency before the frequency layer is aggregated, and the frequency is dispersed to the original frequency. If a neighboring cell does not provide the MBMS service required by the UE, The UE is not dispersed to the frequency of the neighboring cell.
  • the UE and the UTRAN are the same as the preferred embodiment 1, and the related content is stored, and is not repeated here.
  • FIG. 6 is a second preferred embodiment of the present invention.
  • Step 602 The UTRAN determines, according to the network condition, the network condition that indicates the current policy, and sends the indication information of the one or more frequency layer dispersion algorithms to the UE according to the network policy. It is assumed that the present embodiment instructs the UE to perform frequency layer dispersion using both the pseudo-random function algorithm and the hash function algorithm.
  • Step 603 The UE receives the indication that the UE uses the pseudo-random function algorithm and the hash function algorithm to perform frequency layer dispersion, and selects one algorithm from the two algorithms. If the pseudo-random function algorithm is selected, the algorithm is determined to be The frequency layer dispersion algorithm for frequency layer dispersion is performed, the pseudo-random function algorithm is found from the stored frequency layer dispersion algorithm, the dispersed frequency is determined by the pseudo-random function algorithm, and the frequency layer is dispersed by the determined frequency.
  • the frequency layer dispersion algorithm can be selected by random selection or in the order of reception or by a preset selection order.
  • a frequency layer decentralization algorithm is selected by an algorithm that can be uniformly selected, such as a hash algorithm or a random function algorithm.
  • the UE and the UTRAN are the same as the preferred embodiment 1, and the related content is stored, and is not repeated here.
  • FIG. 7 is a flow chart of the frequency layer dispersion process according to the third preferred embodiment of the present invention. The process includes the following steps:
  • Step 701 The UTRAN receives the session end request of the MBMS service sent by the CN, and determines that the frequency layer convergence operation is performed on the MBMS service, and then sends an indication message for performing the frequency layer scatter operation to the UE.
  • Step 702 the UTRAN determines, according to which network condition the current network situation is in accordance with According to the network policy, the indication information of which one or more frequency layer dispersion algorithms are used is sent to the UE. It is assumed that the present embodiment is to perform frequency layer dispersion by instructing the UE to adopt a pseudo-random function algorithm, a hash function algorithm, and an algorithm for spreading frequencies to frequencies before frequency layer convergence.
  • Step 703 The UTRAN sends an indication message to the UE for the priority order of the algorithms or the conditions or selection rules for selecting from the algorithms.
  • Step 704 After receiving the indication message, the UE selects a frequency layer dispersion algorithm according to the priority selection order in the indication, and determines an algorithm for performing frequency layer dispersion; or selects a frequency layer according to the selection condition or the selection rule in the indication.
  • the decentralization algorithm is determined as an algorithm for performing frequency layer dispersion, and the algorithm is found from the stored frequency layer dispersion algorithm, and the dispersed frequency is determined by the algorithm, and the frequency layer is dispersed by the determined frequency.
  • the UTRAN notifies the UE to preferentially select the hash function algorithm; or informs the UE to select an algorithm for spreading the frequency to the frequency before the frequency layer is aggregated if the frequency of the previous UE is high. If the frequency signals of the connected cells are strong, the pseudo-random function algorithm and the like are selected.
  • the UE and the UTRAN are the same as the preferred embodiment 1, and the related content is stored, and is not repeated here.
  • FIG. 8 is a flow chart of the frequency layer dispersion process according to the fourth preferred embodiment of the present invention. The process includes the following steps:
  • Step 801 After receiving the session end request of the MBMS service sent by the CN, and determining that the frequency layer convergence operation is performed on the MBMS service, the UTRAN sends an indication message for performing a frequency layer decentralization operation to the UE.
  • Step 802 The UTRAN determines, according to the network condition that the current network condition is in accordance with the indication policy, according to the network policy, which one or more frequency layer dispersion algorithms are used to send to the UE. Instructions. It is assumed that the embodiment instructs the UE to perform frequency layer dispersion using two algorithms, a pseudo-random function algorithm and a hash function algorithm.
  • Step 803 the UTRAN indicates the order of selection of the two algorithms of the UE. It is assumed that the present embodiment first uses a pseudo-random function algorithm and then uses a hash function algorithm for frequency layer dispersion.
  • Step 804 After receiving the foregoing indication, the UE determines, according to the indication, that all the algorithms are performed as an algorithm for performing frequency layer dispersion, and according to the selection order in the indication, first adopts a pseudo-random function algorithm to determine the dispersed frequency, and uses the determined The frequency is dispersed by the frequency layer; the hash function algorithm is used to determine the dispersed frequency, and the frequency layer is dispersed with the determined frequency.
  • the UE may select some of the algorithms to perform frequency layer dispersion only according to the selection order, for example, one or two algorithms are selected to perform frequency layer dispersion.
  • the UE and the UTRAN are the same as the preferred embodiment 1, and the related content is stored, and is not repeated here.
  • FIG. 9 is a flow chart of the frequency layer dispersion process according to the fourth preferred embodiment of the present invention. The process includes the following steps:
  • Step 901 The UTRAN receives the session end request of the MBMS service sent by the CN, and determines that the frequency layer convergence operation is performed for the MBMS service, and then sends an indication message for performing the frequency layer scatter operation to the UE.
  • Step 902 The UTRAN determines, according to the network condition, the network condition indicating the current policy, and according to the network policy, the indication information of which one or more frequency layer dispersion algorithms are used is sent to the UE. It is assumed that the present embodiment instructs the UE to perform frequency layer dispersion using both the pseudo-random function algorithm and the hash function algorithm.
  • the UTRAN indicates that the UEs of the cells adopt the pseudo-random function algorithm, and the UEs of other cells adopt the hash function algorithm.
  • Step 904 After receiving the foregoing indication, the UE participates in the indication, and determines a frequency layer dispersion algorithm corresponding to the cell in which the UE is located as a frequency layer dispersion algorithm for performing frequency layer dispersion, and uses the algorithm to determine the dispersed frequency, and determine The frequency is dispersed by the frequency layer.
  • the network side indicates different frequency layer decentralization algorithms for different cells.
  • different frequency layer decentralization algorithms may also be indicated for UEs with different characteristics. For example: UEs of different states indicate different frequency layer dispersion algorithms.
  • the user equipment in the multimedia broadcast/multicast service of the present invention performs the frequency layer decentralization method, thereby realizing the flexible selection of the UE and the use of the frequency layer decentralization algorithm, thereby adapting to different network conditions.
  • the network side can control the direction of the UE's random selection, the distribution of the entire network user is more balanced.

Landscapes

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

Abstract

La présente invention décrit un procédé pour la dispersion de fréquence de couche de UE dans le service de diffusion/multidiffusion multimédia, dans lequel au moins deux sortes d'algorithmes de dispersion de fréquence de couches sont enregistrés dans UE, ledit procédé comprenant : A. Un côté réseau transmettant l'indication a UE, qui choisit d'adopter le ou les types d'algorithmes de dispersion de fréquence de couche pour exécuter la dispersion fréquence de couche ; B. Selon les indications transmises par le côté réseau, la sélection des algorithmes de dispersion de fréquence de couche correspondants pour exécuter la dispersion fréquence de couche. A l'aide du procédé fourni par l'invention, UE peut sélectionner et utiliser de manière flexible les algorithmes de dispersion de fréquence de couche afin de s'adapter aux différentes situations du réseau. En simultané et puisque le côté réseau peut contrôler la sélection aléatoire de UE, la distribution utilisateur est mieux égalisée partout sur le réseau.
PCT/CN2006/000340 2005-03-07 2006-03-07 Procede pour la dispersion des frequences de couche de ue dans le service de diffusion/multidiffusion multimedia Ceased WO2006094455A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200510051573.8 2005-03-07
CNB2005100515738A CN100389615C (zh) 2005-03-07 2005-03-07 多媒体广播/组播业务中用户设备进行频率层分散的方法

Publications (1)

Publication Number Publication Date
WO2006094455A1 true WO2006094455A1 (fr) 2006-09-14

Family

ID=36952951

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/000340 Ceased WO2006094455A1 (fr) 2005-03-07 2006-03-07 Procede pour la dispersion des frequences de couche de ue dans le service de diffusion/multidiffusion multimedia

Country Status (2)

Country Link
CN (1) CN100389615C (fr)
WO (1) WO2006094455A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101296400B (zh) * 2007-04-29 2012-05-23 中兴通讯股份有限公司 多媒体广播/组播业务优选频率层选择方法及装置
CN101299831B (zh) * 2007-04-30 2011-06-22 中兴通讯股份有限公司 Mbms优选频率层选择方法及装置
CN106060832A (zh) * 2016-06-17 2016-10-26 华南理工大学 Lte异构网络下基于部分频率复用的灵活频谱分配方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1571531A (zh) * 2003-07-15 2005-01-26 北京三星通信技术研究有限公司 多媒体广播与组播业务中公用控制信息可靠传输的方法
US20050030966A1 (en) * 2003-08-06 2005-02-10 Zhijun Cai Method and apparatus for providing session data to a subscriber to a multimedia broadcast multicast service
WO2005018269A1 (fr) * 2003-08-19 2005-02-24 Lg Electronics Inc. Dispositif et procede permettant de partager des entites de protocole radio dans un systeme de communication sans fil

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60303837T2 (de) * 2003-05-12 2006-08-17 Matsushita Electric Industrial Co., Ltd., Kadoma Verfahren und Vorrichtung zur Übertragung von Schichten für skalierbare Datendienste
JP4317221B2 (ja) * 2003-08-22 2009-08-19 サムスン エレクトロニクス カンパニー リミテッド マルチメディアブロードキャスト／マルチキャストサービス（ｍｂｍｓ）を提供する移動通信システムにおけるパケットデータを受信するためのセル再選択方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1571531A (zh) * 2003-07-15 2005-01-26 北京三星通信技术研究有限公司 多媒体广播与组播业务中公用控制信息可靠传输的方法
US20050030966A1 (en) * 2003-08-06 2005-02-10 Zhijun Cai Method and apparatus for providing session data to a subscriber to a multimedia broadcast multicast service
WO2005018269A1 (fr) * 2003-08-19 2005-02-24 Lg Electronics Inc. Dispositif et procede permettant de partager des entites de protocole radio dans un systeme de communication sans fil

Also Published As

Publication number Publication date
CN1832589A (zh) 2006-09-13
CN100389615C (zh) 2008-05-21

Similar Documents

Publication Publication Date Title
JP4813479B2 (ja) マルチメディアブロードキャスト／マルチキャストサービスシステムにおけるサービスセッションの終了時のセル選択を指示する方法及び装置
KR100947741B1 (ko) 이동통신 시스템에서의 ｒｒｃ연결설정 방법
US7623869B2 (en) Radio communication system and method
JP4634389B2 (ja) 無線通信システムにおけるブロードキャストアプリケーションのための方法および装置
US8619745B2 (en) Method and apparatus of selecting operating frequency for user equipment in a wireless communications system
US7970002B2 (en) Service transmission method for multimedia broadcast/multicast service
CN100534217C (zh) 为连接模式用户设备选择频率层的方法和装置
CN100442701C (zh) 网络侧获知用户接收多媒体广播/组播业务情况的方法
JP2018507605A (ja) サービングセル情報を用いる、ポイントツーマルチポイント（ｐｔｍ）互換サービスのための送信メカニズム選択
CN100450004C (zh) 多媒体广播/组播服务业务发送方法和接收方法
JP2007535248A (ja) マルチメディアブロードキャスト／マルチキャストサービスにおけるセル情報の変化の通知方法
CN1323568C (zh) 无线通信系统中控制用户终端选择小区的方法
CN100415038C (zh) 无线通信系统中控制用户终端选择小区的方法
CN100421507C (zh) 一种多媒体广播/组播业务中业务控制信息的传输方法
US20070133565A1 (en) Content packet transmission control method in mobile communication network supporting multimedia broadcast/multicast service
CN101039454A (zh) 无线通讯系统中停止一点对多点多媒体广播的方法及装置
WO2006102853A1 (fr) Procede de realisation d’operations au niveau de la frequence dans les services de diffusion/multiplexage multimedia
CN101114921B (zh) 一种发送多媒体广播/组播服务业务的方法及装置
WO2006094455A1 (fr) Procede pour la dispersion des frequences de couche de ue dans le service de diffusion/multidiffusion multimedia
CN100502280C (zh) 一种保证网络侧接收用户设备消息的方法
US20070230380A1 (en) System And Method For Selecting A Point-To-Point Or Point-To-Multipoint Transmission Mode
CN100450296C (zh) 一种广播/组播业务控制信息的传输方法
CN100466762C (zh) 实现广播组播业务通知的方法
CN1953603B (zh) 广播/组播业务中用户接收寻呼信息的方法
CN100428749C (zh) 一种多媒体广播/组播业务组播激活的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

WWW Wipo information: withdrawn in national office

Country of ref document: RU

122 Ep: pct application non-entry in european phase

Ref document number: 06705728

Country of ref document: EP

Kind code of ref document: A1

WWW Wipo information: withdrawn in national office

Ref document number: 6705728

Country of ref document: EP