WO2010054545A1 - 同步调度方法 - Google Patents
同步调度方法 Download PDFInfo
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- WO2010054545A1 WO2010054545A1 PCT/CN2009/071538 CN2009071538W WO2010054545A1 WO 2010054545 A1 WO2010054545 A1 WO 2010054545A1 CN 2009071538 W CN2009071538 W CN 2009071538W WO 2010054545 A1 WO2010054545 A1 WO 2010054545A1
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- division multiplexing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
- H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
- H04W56/007—Open loop measurement
- H04W56/0075—Open loop measurement based on arrival time vs. expected arrival time
- H04W56/0085—Open loop measurement based on arrival time vs. expected arrival time detecting a given structure in the signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/62—Establishing a time schedule for servicing the requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/28—Timers or timing mechanisms used in protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
Definitions
- the present invention relates to the field of communications, and in particular, to a synchronous scheduling method.
- BACKGROUND With the development of the Internet network, a large number of multimedia services have emerged, and the demand for mobile communication is no longer satisfied with the telephone and message services.
- the application service is introduced in the multimedia service, and the application service is characterized in that multiple users can receive the same data at the same time, for example, video on demand, television broadcast, video conference, online education, interactive game, and the like.
- MBMS Multimedia Broadcast Multicast Service
- MBMS is a point-to-multipoint service in which data is sent to multiple users by a data source.
- FIG. 1 is a flowchart of a method for synchronizing MBMS services of multiple network elements in the prior art, including the following processing.
- Step S102 The upper layer network element sends the MBMS data packet to each of the lower layer network elements, where the data packet carries the service data, and carries the timestamp information, the data packet sequence number information, the accumulated service data length information, and the like, and the upper layer network element pairs Or multiple consecutive data packets identify the same timestamp information, and the data packets marked with the same timestamp constitute a data burst or a synchronization sequence 'J ( synchronization sequence)
- the upper layer network element Each data packet is a data burst or a synchronization sequence. In this case, each data burst or synchronization sequence contains only one data packet.
- Step S104 the lower layer network element carries the data packet in the same data burst.
- the service data needs to be RLC (Radio Link Control) protocol layer concatenation processing, and data packets of different data bursts are not subjected to RLC concatenation processing, and RLC is performed on data packets of one data burst.
- RLC Radio Link Control
- the protocol layer processes the RLC sequence number of the RLC protocol layer is reset from the first data packet of each data burst. That is, the burst data from each of the first number Starting with the first RLC PDU (Protocol Data Unit) of the packet, the RLC sequence number is assigned starting from a fixed or configured fixed value.
- Step S106 The lower layer network element sends the data packet to the wireless interface in sequence for the service data carried in the data packet in the same data burst, and the upper layer network element sends the data packet to each lower layer network element.
- the timestamp information of each packet can be set in the following two ways.
- the upper network element identifies the timestamp according to the time of receiving the data packet, and identifies the same timestamp for the data packet received in a certain length time interval, where the specific length time The interval is called the synchronization sequence length, or the scheduling period.
- the length of the scheduling period is equal to the interval length of the time stamp of the adjacent data burst.
- the RLC ten-layer negotiation layer of the upper-layer network element virtual lower-layer network element processes the same timestamp for the data packet that needs to be subjected to the RLC concatenation process according to the result of the virtual RLC processing.
- the length of the scheduling period is the minimum of the adjacent data burst timestamp.
- the timestamp information depends on the time when the data packet reaches the upper layer network element, so the timestamp interval of the data packet is uncertain.
- the service data stream received by the upper layer network element is the data stream after the service QoS shaping, that is, the bandwidth of the service data stream does not exceed the maximum bandwidth defined by the service QoS parameter in any period of time, and the wireless interface is assumed to be
- the channel resources and QoS parameters in the above time period are matched.
- An MBMS service can be transmitted on the radio interface by using Time Division Multiplex (TDM).
- TDM configuration includes the following parameters: TDM period, TDM offset, and TDM repetition length.
- a TDM resource available for a service can be used.
- an MBMS service During the TDM period of the TDM, the TDM repeats from the TTI, and the TDM repeats the transmission time interval (TTI).
- TTI transmission time interval
- the maximum TDM repetition period is 9.
- the length of the TTI that can be used by the MBMS service is 40. Or 80ms.
- a service can only be sent on the radio interface during the available transmission time configured during the TDM period.
- FIG. 3 is a schematic diagram of resource allocation inconsistency corresponding to different scheduling periods. As shown in FIG. 3, in the TDM configuration mode, since the wireless channel resources are discontinuous, they are available in the same time period of different locations.
- Wireless resources are not the same, in which case prior art scheduling algorithms can produce erroneous results.
- the prior art scheduling algorithm assumes that a data packet that can be sent in a certain period of time may not be transmitted on the wireless interface, and an overflow situation occurs, which may result in loss of service data and severely deteriorate the quality of service reception.
- SUMMARY OF THE INVENTION The present invention has been made in view of the problem that the current scheduling method existing in the related art causes loss of service data and severely damaged service reception quality. Therefore, the main object of the present invention is to provide a synchronization scheduling method to solve the above problem. problem. In order to achieve the above object, according to an aspect of the present invention, a synchronization scheduling method is provided.
- the synchronization scheduling method includes: the upper layer network element sends a plurality of data bursts of the specified service to the specified network element belonging to the network element, wherein the data packet of the data burst carries the timestamp information, so that the specified network element is configured according to the The timestamp information is sent to the data burst; wherein, the upper layer network element sets the difference between the timestamp information of the data bursts adjacent to each other to an integer multiple of the time division multiplexing period of the specified service, where the time division multiplexing period The length is one of the integer multiples of the frame number period of the wireless interface system.
- a synchronization scheduling method is provided.
- the synchronization scheduling method includes: the upper layer network element sends a plurality of data bursts of the specified service to the specified network element that belongs to the network element, wherein the data packet of the data burst carries the timestamp information.
- the specified network element sends multiple data bursts according to the timestamp information.
- the upper layer network element sets the difference between the timestamp information of the data bursts adjacent to each other to an integer multiple of the time division multiplexing period of the specified service. One-half, wherein the length of the time division multiplexing period is one of integer multiples of the frame number period of the wireless interface system.
- FIG. 1 is a flowchart of an MBMS service synchronization processing method according to a plurality of network elements in the prior art
- FIG. 2 is a schematic diagram showing an example of a scheduling period and a TDM period mismatch according to the prior art
- 3 is a schematic diagram of an example of resource allocation inconsistency corresponding to different scheduling periods according to the prior art
- FIG. 4 is a flowchart of a synchronization scheduling method according to Embodiment 1 of the method of the present invention
- FIG. 5 is an upper layer according to the present invention.
- FIG. 6 is a schematic diagram 1 of a timestamp mapping manner according to an embodiment of the present invention
- FIG. 7 is a schematic diagram 2 of a timestamp mapping manner according to an embodiment of the present invention
- FIG. 8 is a third schematic diagram of a timestamp mapping manner according to an embodiment of the present invention;
- FIG. 9 is a fourth schematic diagram of a timestamp mapping manner according to an embodiment of the present invention.
- the basic idea of the present invention is: In the current TDM configuration mode, since the wireless channel resources are discontinuous, due to jib, the available radio resources are not in the same time period of different locations. In the same way, in this case, the prior art scheduling algorithm produces erroneous results. Based on this, the present invention provides a synchronization scheduling method, which sets a scheduling period of a service to an integer multiple of a time division multiplexing period, and transmits a data burst according to timestamp information in a time division multiplexing period.
- FIG. 4 is a flowchart of a synchronization scheduling method according to an embodiment of the present invention. As shown in FIG.
- Step S402 an upper-layer network element sends a specified network element to the specified network element.
- Step S402 an upper-layer network element sends a specified network element to the specified network element.
- the data burst data packet carries the time stamp information of the data burst, the sequence number of the data packet, and the accumulated data length, so that the specified network element is time-based in the time division multiplexing period.
- the stamp information is sent to the data burst, wherein the data burst is a group of data packets having the same time stamp information;
- Step S404 the upper layer network element sets the scheduling period of the service data to an integer multiple of the time division multiplexing period, so that The difference between the timestamp information of the adjacent data bursts is set to an integral multiple of the time division multiplexing period, and the difference between the timestamp information of the adjacent data bursts is set to the frame number period of the wireless interface system.
- the timestamp information of each data packet can be set in the following two ways: In the first mode, the upper network element identifies the timestamp according to the time of the data packet it receives, and at a certain length of time.
- the data packets received within the interval identify the same timestamp, where the specific length time interval is called the synchronization sequence length, or the scheduling period.
- the length of the scheduling period is equal to the interval length of the timestamp of the adjacent data burst.
- the RLC ten-layer negotiation layer of the upper-layer network element virtual lower-layer network element is processed according to the result of the virtual RLC processing.
- the same timestamp is identified for the packets that need to be RLC concatenated.
- the length of the scheduling period is the minimum value of the adjacent data burst timestamp.
- TDM period time division multiplexing period
- Manner 1 The upper-layer NE configures the time division multiplexing period of the specified service, and notifies the specified time division multiplexing period to the specified network element.
- the second mode specifies the time division multiplexing period of the specified service, and configures the configuration. The time division multiplexing period is notified to the upper layer network element; or, the third method: the upper layer network element configures the time division multiplexing period of all services, and notifies the configured time division multiplexing period to the designated network element; or, manner 4: the upper layer network element and The specified network element is configured to obtain the time division multiplexing period of the service.
- mode 5 Configure a scheduling period for all upper-layer NEs for the services sent by the TDM in the wireless interface.
- the scheduling period meets the following conditions: An integer multiple of the TDM period.
- the lower layer network element maps the received data burst according to the timestamp information, and sends the received data burst from the mapping to the TDM period, and one data burst can continuously occupy multiple TDM periods, and the mapping method may include Any of the following four. 1. If the timestamp information corresponds to the start time of the current time division multiplexing period, the designated network element starts transmitting the data burst corresponding to the timestamp information from the start time of the available transmission time of the current time division multiplexing period. 2.
- the designated network element sends the timestamp information corresponding to the start time of the available transmission time of the next time division multiplexing period of the current time division multiplexing period.
- the data burst 3. If the timestamp information corresponds to the start time of the available transmission time of the current time division multiplexing period, the designated network element sends the data burst corresponding to the timestamp information from the start time of the available transmission time of the current time division multiplexing period. . 4.
- the data burst corresponding to the timestamp information is sent at the start time.
- the foregoing available transmission time is a time period of a radio interface resource used for sending a data packet.
- the TDM period length of the service needs to be set to the system frame number (SFN) period. One of the integer multiples.
- the current TDM period of the MBMS service takes a value from 2 to 9, that is, the length of 2 TTIs to 9 TTIs.
- the system frame number (SFN) of the wireless interface takes 4096 10 milliseconds.
- the length of the support TTI is 4 10 milliseconds, then the period of one SFN contains 1024 TTIs.
- the number of MIMO periods included in the TDM period is not one of the integer multiples of 1024, the number of TDM periods included in one SFN period is not an integer multiple, that is, it may appear in one SFN.
- the tail of the cycle has only a part of the TDM period, resulting in inconsistent resources and other periods of service during the period of this part of the cycle.
- the upper layer network element assumes that the radio interface resources allocated by the lower layer network element are uniformly distributed. If the TDM period is not one of integer multiples of the SFN period length, the assumption is not established. Therefore, it is necessary to set the TDM period length to one of integer multiples of the SFN period. In order to avoid the uneven distribution of radio resources in the transmission scheduling period in the method due to the fact that the scheduling period length is not one of the integer multiple of the system frame number SFN period, the upper layer network element needs to set the scheduling period as the integer of the system frame number SFN period. One of the multiples. The reason and the TDM period need to be set to be the same as one of the integer multiples of the system frame number SFN period.
- the technical solution provided by the embodiment of the present invention can determine the scheduling period of the service according to the time division multiplexing period, and process the service data. Compared with the prior art, the discontinuous distribution of the radio interface resources due to the TDM configuration can be avoided. The resource allocation is uneven, so as to prevent the business data from overflowing and avoiding the loss of business data.
- the upper layer network element and the lower layer network element are first described.
- the upper layer network element is used to complete the scheduling of the received MBMS data packet. Specifically, the upper layer network element marks each data packet with timestamp information, and refers to the data packet marked with the same timestamp information as a data burst, or This is called a synchronization sequence.
- FIG. 5 is a logical structural diagram of an upper layer network element and a lower layer network element. As shown in FIG. 5, an upper layer network element is connected to multiple lower layer network elements for signaling interaction.
- an upper layer network element and one or more lower layer network elements belonging to the upper layer network element may be the same network element in physical function, or may be different network elements, and are divided into upper layer network elements.
- the lower layer network element is only a logical division, in order to cooperate to complete the business synchronization function. That is, a plurality of the same or different physical network elements are divided into an upper layer network element and a plurality of lower layer network elements according to logical functions, and the network elements cooperate to implement multi-cell merging among the cells of the lower layer network element. The way the MBMS service is sent.
- the upper layer network element and the lower layer network element may be a combination of the following network elements, but are not limited to the following combinations: Combination one, in the MBMS service synchronization network of the universal terrestrial radio access network (UTRAN) system, the upper layer network element
- the lower layer network element is the lower layer RNC
- the interface between the upper layer network element and the lower layer network element is an Iur interface.
- the upper layer network element and the lower layer are the lower layer network element and the lower layer network element controller (the radio network controller, the tube is called the RNC).
- the NEs are NEs with the same physical function.
- the upper-layer network element is a Gateway GPRS Support Node (Gateway GPRS Support Node, called GGSN), and the monthly GPRS support node (Serving) GPRS Support Node, called SGSN) or Broadcast Multicast Service Center (BMSC).
- the lower layer network element is the RNC or the node power port (NB+).
- the upper-layer network element is a multimedia broadcast multicast service gateway (MBMS Gateway, called MGW) or multi-cell/group.
- MGW multimedia broadcast multicast service gateway
- the multi-cell/multicast Coordination Entity (MCE), and the lower-layer network element is an E-UTRAN NodeB.
- the upper layer network element needs to obtain the TDM configuration information of the service, and must include the TDM period information.
- the TDM offset and the repetition length information may also be included, where the time division multiplexing period length configuration of the service is configured.
- the manner in which the upper-layer network element obtains the service TDM configuration information may include:
- the upper-layer network element notifies the TDM configuration parameter of a service of the lower-layer network element by using the signaling mode, and the lower-layer network element allocates the resource according to the TDM configuration parameter notified by the upper-layer network element;
- the lower layer network element notifies the TDM configuration parameter of a service of the upper layer network element by using a signaling manner
- the upper layer NEs are configured with a scheduling period.
- the scheduling period meets the conditions:
- the scheduling period is an integer multiple of the TDM period of all services.
- the upper network element marks the received data packet with a timestamp, and identifies the same timestamp for the data packet of the same data burst. And marking the data packet sequence number and the accumulated data length information for each data packet in the data burst, and scheduling the data packet according to the TDM configuration information, and the scheduling period is an integer multiple of the TDM period, so that the time of the adjacent timestamp is The interval is an integer multiple of the TDM period.
- the specific scheduling method may be the following method, but is not limited thereto, and the requirement that the adjacent time stamp interval is an integer multiple of the TDM period meets the requirements of the present invention.
- the scheduling method may be that the upper layer network element performs scheduling according to the time of the received data packet, and the data packet received in the integer multiple time interval of the TDM period of the service is identified as a data burst (or referred to as a synchronization).
- the scheduling method may also be that the upper layer network element sets a scheduling period according to the TDM period, the scheduling period is an integer multiple of the TDM period, and performs virtual RLC concatenation on the received data packet, and marks the data packet satisfying the virtual concatenation as The same data burst or synchronization sequence.
- the upper layer network element can accurately obtain the size of the corresponding radio resource according to the number of TDM periods occupied by one data burst.
- the upper layer network element sends the data packet marked with the timestamp information to the lower layer network element according to the scheduling period, and the lower layer network element maps to the radio interface resource according to the timestamp information indicated by the data packet, where the specific timestamp mapping manner may include the following Four ways.
- the lower layer network element starts from the resource allocated for the service in the TDM period. , send the data burst of the data packet.
- the timestamp mapping method shown in Figure 7 if the timestamp information of the data burst is not positive.
- the start time of a certain TDM period of the service is good, and the lower layer network element starts sending the data packet of the data burst from the resource allocated for the service in the next TDM period.
- the timestamp mapping mode shown in Figure 8 if the timestamp information of the data burst corresponds to the start time of the resource allocated in a TDM of the service, that is, the timestamp is exactly the same as the TDM period of the service.
- the internal offset corresponds to the lower layer network element transmitting the data packet of the data burst starting from the resource allocated by the service in the TDM period.
- the timestamp mapping mode as shown in FIG. 9, if the timestamp information of the data burst is not exactly the start time of the resource allocated within a certain TDM period of the service, that is, the timestamp is not equal to the If the service is offset within one TDM period, the lower layer network element starts transmitting the data packet of the data burst from the resource allocated by the service in the next TDM period. Because the interval between adjacent timestamps is an integer multiple of the TDM period, the timestamp and TDM period can be implemented by the above mapping.
- Method Embodiment 2 According to an embodiment of the present invention, a synchronization scheduling method is provided.
- the synchronization scheduling method includes: the upper layer network element sends a plurality of data bursts of the specified service to the specified network element that belongs to the network element, where each data burst carries the timestamp information in the data packet. So that the specified network element sends multiple data bursts according to the timestamp information in the time division multiplexing period; wherein, the upper layer network element sets the difference between the timestamp information of the data bursts adjacent to each other as the time division multiplexing period.
- the TDM period length of the service is set to one of the integer multiples of the SFN period.
- the upper layer network element can obtain the scheduling period in the following manner: 1.
- the GGSN obtains the TDM configuration parameter of each MBMS service, and the upper layer network element selects the scheduling whose service length is one of the integer multiple of the service TDM period.
- the second layer network element sends the TDM configuration of each service to the upper layer network element by means of signaling, and the upper layer network element selects a scheduling period in which the service length is one of integer multiples of the service TDM period;
- the network element allocates each service TDM parameter and sends it to the lower layer network element by means of signaling.
- the lower layer network element allocates the upper layer network element of the radio interface resource to the service selection length of the service as the integer multiple of the service TDM period.
- the upper layer network element configures a scheduling period for all services, and the scheduling period is one of integer multiples of all possible TDM periods.
- the upper-layer network element schedules the received service data packet according to the scheduling period, identifies the timestamp information of the data packet, and sends the data burst to the lower-layer network element, where the lower-layer network element maps the timestamp of the data burst, and multiple The complete data burst is mapped to the same TDM period.
- the lower layer NEs are sequentially sent in the TDM period according to their timestamp order. Said. 1.
- the lower layer network element maps the data burst to the TDM period. 2. If the timestamp information of the data burst does not exactly correspond to the start time of a TDM period of the service, the lower layer network element maps the data burst to the TDM period. 3. If the timestamp information of the data burst corresponds to the beginning of the resource allocated in the TDM of the service, that is, the timestamp corresponds to the offset in a TDM period of the service, the lower layer network element uses the data. The burst is mapped to the TDM cycle. 4.
- the TDM period length of the service needs to be set to the system frame number (SFN) period.
- SFN system frame number
- the system frame number (SFN) of the wireless interface takes 4096 10 milliseconds.
- the length of the support TTI is 4 10 milliseconds, then the period of one SFN contains 1024 TTIs.
- the number of MIMO periods included in the TDM period is not one of the integer multiples of 1024, the number of TDM periods included in one SFN period is not an integer multiple, that is, it may occur in one SFN period.
- the tail has only a part of the TDM period, which leads to the inconsistency of resources and other periods that the service can use during this part of the cycle time.
- the upper layer network element supports that the radio interface resources allocated by the lower layer network element are uniformly distributed.
- the TDM cycle length needs to be set to one of the integer multiples of the SFN cycle. Since the interval between the scheduling period, or the time stamp of the adjacent data burst, is one of integer multiples of the length of the time division multiplexing period according to the method of the present invention, the time division multiplexing period is satisfied as the SFN system frame number period. Under the condition of one of the integer multiples, the length of the scheduling period must be one of the integer multiples of the frame number period of the SFN system.
- the technical solution provided by the embodiment of the present invention can process the service data by determining the scheduling period of the service according to the time division multiplexing period.
- the discontinuous distribution of the radio interface resources due to the TDM configuration can be avoided.
- the resource allocation is uneven, thus preventing the overflow of business data bursts and avoiding the loss of business data.
- the upper layer network element performs scheduling time stamping on the data packet of the service according to the TDM period of one service, and can ensure that the time stamp distance of the adjacent data burst is
- the TDM period is an integer multiple.
- the TDM period of the service is set to be an integer multiple of the SFN period. This ensures that the number of TDM cycles allocated by the service is an integer value in one SFN period, which avoids scheduling.
- the time stamp caused by the inconsistency of the periodic or adjacent timestamp interval and the TDM period cannot be compared with the radio interface time-map, and multiple data bursts need to be mapped into the same TDM period.
- the resources configured on the radio interface are the same in each scheduling period, so that the data bursts scheduled by the upper layer NEs are inconsistent in the corresponding radio interface time, and the data is discarded.
- 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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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09825720.7A EP2337411B1 (en) | 2008-11-11 | 2009-04-28 | Synchronization schedule method |
| BRPI0921484-4A BRPI0921484B1 (pt) | 2008-11-11 | 2009-04-28 | método de agendamento de sincronização para transmissão multimídia e serviços de multicast (mbms) |
| RU2011117103/07A RU2479949C2 (ru) | 2008-11-11 | 2009-04-28 | Способ расписания синхронизации |
| JP2011533514A JP5357973B2 (ja) | 2008-11-11 | 2009-04-28 | 同期スケジュール方法 |
| US13/127,291 US8199741B2 (en) | 2008-11-11 | 2009-04-28 | Synchronization scheduling method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101821274A CN101741499B (zh) | 2008-11-11 | 2008-11-11 | 同步调度方法 |
| CN200810182127.4 | 2008-11-11 |
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| WO2010054545A1 true WO2010054545A1 (zh) | 2010-05-20 |
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| PCT/CN2009/071538 Ceased WO2010054545A1 (zh) | 2008-11-11 | 2009-04-28 | 同步调度方法 |
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| US (1) | US8199741B2 (zh) |
| EP (1) | EP2337411B1 (zh) |
| JP (1) | JP5357973B2 (zh) |
| CN (1) | CN101741499B (zh) |
| BR (1) | BRPI0921484B1 (zh) |
| RU (1) | RU2479949C2 (zh) |
| WO (1) | WO2010054545A1 (zh) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101938697A (zh) * | 2009-06-29 | 2011-01-05 | 大唐移动通信设备有限公司 | 一种同步调度方法、装置和系统 |
| CN105451302B (zh) * | 2012-03-07 | 2018-11-09 | 北京新岸线移动多媒体技术有限公司 | 无线网络中实现同步的方法及装置 |
| US9286620B2 (en) | 2012-11-05 | 2016-03-15 | Broadcom Corporation | Annotated tracing for data networks |
| US10015640B2 (en) | 2015-08-12 | 2018-07-03 | At&T Intellectual Property I, L.P. | Network device selection for broadcast content |
| US9979604B2 (en) | 2015-08-12 | 2018-05-22 | At&T Intellectual Property I, L.P. | Network management for content broadcast |
| JP2022047551A (ja) | 2019-01-24 | 2022-03-25 | ソニーグループ株式会社 | 無線通信装置および方法 |
| CN112448896B (zh) * | 2019-08-30 | 2024-04-30 | 华为技术有限公司 | 确定性网络中的发送周期的确定方法和装置 |
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| CN101043265A (zh) * | 2007-04-27 | 2007-09-26 | 华为技术有限公司 | 一种实现多媒体广播和组播业务数据同步发送的方法 |
| KR20080069112A (ko) * | 2007-01-22 | 2008-07-25 | 엘지전자 주식회사 | 이동 통신망에서의 라디오 프레임 스케줄링 방법 |
| CN101282230A (zh) * | 2007-04-05 | 2008-10-08 | 中兴通讯股份有限公司 | 广播数据全网同步的实现方法 |
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| US5909447A (en) * | 1996-10-29 | 1999-06-01 | Stanford Telecommunications, Inc. | Class of low cross correlation palindromic synchronization sequences for time tracking in synchronous multiple access communication systems |
| RU2156025C2 (ru) * | 1996-11-26 | 2000-09-10 | Валерий Григорьевич Боровик | Пьезоэлектрический двигатель (варианты) |
| US6654375B1 (en) * | 1998-12-24 | 2003-11-25 | At&T Corp. | Method and apparatus for time-profiling T-carrier framed service |
| US7412053B1 (en) * | 2002-10-10 | 2008-08-12 | Silicon Image, Inc. | Cryptographic device with stored key data and method for using stored key data to perform an authentication exchange or self test |
| GB2436421B (en) * | 2006-03-21 | 2011-09-07 | Zarlink Semiconductor Ltd | Timing source |
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| KR20080069112A (ko) * | 2007-01-22 | 2008-07-25 | 엘지전자 주식회사 | 이동 통신망에서의 라디오 프레임 스케줄링 방법 |
| CN101282230A (zh) * | 2007-04-05 | 2008-10-08 | 中兴通讯股份有限公司 | 广播数据全网同步的实现方法 |
| CN101043265A (zh) * | 2007-04-27 | 2007-09-26 | 华为技术有限公司 | 一种实现多媒体广播和组播业务数据同步发送的方法 |
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|---|---|
| EP2337411A4 (en) | 2017-05-03 |
| BRPI0921484B1 (pt) | 2020-11-03 |
| RU2011117103A (ru) | 2012-11-10 |
| JP2012507218A (ja) | 2012-03-22 |
| CN101741499A (zh) | 2010-06-16 |
| EP2337411A1 (en) | 2011-06-22 |
| RU2479949C2 (ru) | 2013-04-20 |
| CN101741499B (zh) | 2013-12-04 |
| US20110216756A1 (en) | 2011-09-08 |
| EP2337411B1 (en) | 2019-06-12 |
| JP5357973B2 (ja) | 2013-12-04 |
| US8199741B2 (en) | 2012-06-12 |
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