WO2010054541A1 - 同步调度方法和装置 - Google Patents
同步调度方法和装置 Download PDFInfo
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- WO2010054541A1 WO2010054541A1 PCT/CN2009/071114 CN2009071114W WO2010054541A1 WO 2010054541 A1 WO2010054541 A1 WO 2010054541A1 CN 2009071114 W CN2009071114 W CN 2009071114W WO 2010054541 A1 WO2010054541 A1 WO 2010054541A1
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- network element
- layer network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/29—Control channels or signalling for resource management between an access point and the access point controlling device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
Definitions
- the present invention relates to the field of communications, and in particular, to a synchronization scheduling method and apparatus.
- BACKGROUND With the development of the Internet network, a large number of multimedia services emerge, 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 by multiple users. Receive the same data at the same time, for example, video on demand, TV broadcast, video conferencing, online education, interactive games, etc.
- 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 processing MBMS service synchronization of multiple network elements in the prior art, including the following processing.
- Step S102 The upper layer network element sends the MBMS service data packet to each of the lower layer network elements, where the service 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 pair One or more consecutive service data packets identify the same timestamp information. These data packets marked with the same timestamp form a data burst or a synchronization sequence 'J&A'.
- upper layer The network element label i only has one data burst or synchronization sequence for each service data packet. At this time, each data burst or synchronization sequence only includes one service data packet.
- Step S104 the lower layer network element is in the same synchronization sequence.
- the service data carried by the service data packet needs to be subjected to RLC (Radio Link Control) protocol layer concatenation processing, and the service data packets of different synchronization sequences are not subjected to RLC concatenation processing.
- RLC Radio Link Control
- the service data packet is processed by the RLC protocol layer
- the first data packet of each synchronization sequence is opened.
- the RLC sequence number of the RLC protocol layer is reset. That is, starting with the first RLC PDU of the first packet of each synchronization sequence (the ten-party data unit), the RLC sequence number is assigned starting from a fixed or configured fixed value.
- the advantage of this is that in the process of transmission of the upper layer network element to the lower layer network element, when multiple consecutive data packets are lost, the lower layer network element cannot judge that the lost data packet is occupied by the RLC processing according to the prior art.
- the length of the RLC PDU is such that the network element that loses the packet cannot maintain the consistency of subsequent RLC processing with other network elements. Resetting the RLC sequence number at the beginning of each synchronization sequence avoids the above problem, ensuring that the RLC sequence number of each network element is consistent at the beginning of each synchronization sequence.
- Step S106 The lower layer network element sends the service data packet to the radio interface in sequence according to the transmission timing of the service data packet in the same synchronization sequence, and the upper layer network element sends the service data packet to each lower layer network.
- the above information of the element is completely consistent, and each lower layer network element can perform completely consistent processing, so that the MBMS service is synchronously transmitted between cells of each lower layer network element.
- the timestamp information of each packet can be set in the following two ways.
- Manner 1 The timestamp is identified by the upper-layer network element according to the time of the service data packet received by the upper-layer network element, and the service data packet received in a certain length of time interval is identified by the same timestamp, where the specific length of time The interval is called the synchronization sequence length, or the scheduling period.
- the RLC protocol layer of the upper-layer network element virtual lower-layer network element is processed, and the same timestamp is identified for the service data packet that needs to be subjected to the RLC concatenation process according to the result of the virtual RLC processing. Due to the above two setting methods, the timestamp information depends on the time when the service data packet arrives at the upper layer network element, so the timestamp interval of the service data packet is uncertain.
- the service data stream received by the upper layer network element is based on the service QoS shaping data stream, 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 JU interface is set in the wireless interface.
- the channel resources and QoS parameters in the above time period are matched.
- An MBMS service can be transmitted on a radio interface by using Time Division Multiplex (TDM).
- TDM configuration includes the following parameters: TDM period, TDM offset, and TDM repetition length.
- the TDM repetition period is up to 9, and the length of the TTI that can be used by the MBMS service is It is 40 or 80ms.
- a service can only be sent on the wireless interface during the available transmission time configured during the TDM cycle.
- FIG. 3 is a schematic diagram of resource allocation inconsistency corresponding to different synchronization sequence lengths. As shown in FIG.
- the wireless channel resources are discontinuous, they are available in the same time period of different locations.
- the radio resources are different, in which case the prior art scheduling algorithm will produce erroneous results.
- the prior art scheduling algorithm assumes that a service 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 service reception quality.
- SUMMARY OF THE INVENTION The present invention has been made in view of the fact that the current scheduling method existing in the related art causes loss of service data and serious damage to the quality of service reception.
- the main object of the present invention is to provide an improved synchronization scheduling scheme, Solve the above problem.
- a synchronization scheduling method includes: the lower layer network element acquires a plurality of synchronization sequences of the specified service from the upper layer network element to which it belongs, wherein the upper layer network element processes the data packet of the specified service according to the length of the synchronization sequence, and sends multiple synchronizations.
- the lower layer network element determines the scheduling transmission time interval according to the length of the synchronization sequence and the time division multiplexing period of the specified service, where the scheduling transmission time interval A time-division multiplexing period and a common multiple of the synchronization sequence length, and the time division multiplexing period of the specified service is one of integer multiples of the frame period of the wireless interface connection; the synchronization sequence of the timestamp information located in the current scheduled transmission time interval, the lower layer network The element is sent within the available transmission time of the specified scheduled transmission interval.
- a synchronization scheduling apparatus configured to locate the timestamp
- FIG. 1 is a flowchart of an MBMS service synchronization processing method of multiple network elements according to the prior art
- FIG. 2 is a schematic diagram of an example of synchronization sequence length and TDM period mismatch according to the prior art
- 3 is a schematic diagram of an example of resource allocation inconsistency corresponding to different synchronization sequence lengths according to the prior art
- FIG. 4 is a flowchart of a synchronization scheduling method according to an embodiment of the method of the present invention
- FIG. 5 is an upper layer network according to the present invention.
- FIG. 6 is a schematic diagram 1 showing the relationship between the TDM period, the synchronization sequence length, and the scheduled transmission time interval according to the present invention
- Figure 2 is a schematic diagram showing the relationship between the TDM period, the synchronization sequence length, and the scheduled transmission time interval according to the present invention
- Figure 8 is a block diagram showing the structure of a synchronization scheduling apparatus according to an embodiment of the apparatus of the present invention.
- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The basic idea of the present invention is: Since the wireless channel resources are currently discontinuous in the TDM configuration mode, the available radio resources are different in the same time period at different locations. In this case, the prior art scheduling algorithm may generate an erroneous result.
- the present invention provides a synchronization scheduling method, by setting a scheduling transmission time interval, which is a time division multiplexing period and a synchronization sequence length.
- the common multiple, and the received synchronization sequence is transmitted within the specified scheduled transmission time interval to solve the above problem.
- Step S402 The lower layer network element acquires an upper layer network from its home network.
- Step S404 the lower layer network element determines the scheduling transmission time interval according to the length of the synchronization sequence and the time division multiplexing period of the designated service, where the scheduling transmission time interval is a time division multiplexing period and a synchronization sequence a common multiple of the length of the column, and the time division multiplexing period of the specified service is one of integer multiples of the frame period of the wireless interface connection;
- Step S406 the synchronization time sequence of the timestamp information is located in the current scheduled transmission time interval, and the lower layer network element is in the specified scheduling The transmission is performed within the available transmission time of the time division multiplexing period of the transmission time interval.
- the specified scheduling transmission time interval includes one of the following: a current scheduled transmission time interval, a next scheduled transmission time interval; an available transmission time is a time period of a wireless interface resource used for sending a data packet; and the lower layer network element may be acquired.
- the timestamp information corresponding to the first synchronization sequence is determined as the starting time of the first scheduled transmission time interval.
- the lower layer network element may perform RLC concatenation processing on the data packet of the synchronization sequence whose timestamp information is located within the synchronization sequence length of the current scheduled transmission time interval.
- the lower layer network element needs to obtain the synchronization sequence length of the upper layer network element in advance.
- the length of the synchronization sequence can be obtained in two ways: First, the lower layer network element obtains the length of the synchronization sequence by using the system configuration; second, the upper layer network element notifies the lower layer network element of the length of the synchronization sequence. In addition, when the first data packet of the first synchronization sequence is received in each scheduling transmission time interval, the lower layer network element needs to reset the RLC sequence number of the designated service. In order to avoid the uneven distribution of radio resources in the transmission scheduling period in the method, because the TDM period length is not one of the integer multiple of the system frame number CFN period, the lower layer network element needs to set the TDM period of the service to be an integer multiple of the CFN period. One of the points.
- the current time division multiplexing period (TDM period) of the MBMS service takes a value from 2 to 9, that is, the length of 2 TTIs to 9 TTIs.
- the wireless interface connection frame number (CFN) takes 256 10 milliseconds.
- the length of the TTI is 4 10 milliseconds, then the period of one CFN contains 64 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 CFN period is not an integer multiple, that is, it may occur in a CFN 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 assumes that the radio interface resources allocated by the lower layer network element are uniformly distributed. This assumption is not true if the TDM period is not one of integer multiples of the CFN period length.
- the service data is processed according to the scheduling sequence interval determined by the synchronization sequence length and the time division multiplexing period of the service, and the wireless device can be avoided because of the TDM configuration.
- the resource allocation is uneven due to the discontinuous distribution of interface resources, thus preventing the service synchronization sequence from overflowing and avoiding the loss of service data.
- the upper layer network element is configured to complete the scheduling of the received MBMS service data packet. Specifically, the upper layer network element marks the timestamp information of each service data packet, and refers to the service data packet marked with the same timestamp information as a synchronization sequence. , or a synchronization sequence, after which the timestamp information packet is sent to one or more lower layer network elements belonging to the upper layer network element.
- the lower layer network element is configured to receive each service data packet sent by the upper layer network element, and calculate a start time for starting to send a synchronization sequence according to timestamp information of each service data packet, and process the same synchronization sequence when processing by the RLC protocol layer.
- the data packet is subjected to RLC concatenation processing, and the service data packet processed by the radio network layer user plane protocol is sent on the radio interface.
- the lower layer network element performs an RLC reset at the beginning of each synchronization sequence, and the RLC ten-layer negotiation layer sequence is restarted.
- FIG. 5 is a logical structural diagram of an upper layer network element and a lower layer network element. As shown in FIG.
- 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 or different network elements.
- the upper layer network element and the lower layer network element are only logically divided, that is, several identical or different physical network elements are divided into an upper layer network element and several lower layers according to logical functions.
- the network element, these network elements cooperate to implement the MBMS service sent by the multi-cell combination mode between the cells of the lower layer network element.
- 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 networking of the universal terrestrial radio access network (UTRAN) system, the upper layer network element For the upper layer RNC, the lower layer network element is the lower layer RNC, and the interface between the upper layer network element and the lower layer network element is an Iur interface. In this combination, the upper layer network element and the lower layer network element are the same network element with the same physical function.
- Combination 2 MBMS Service Synchronization Group in Enhanced High Speed Packet Access System (HSPA+)
- the upper layer network element is a GGSN, an SGSN, or a BMSC.
- the lower-layer network element is the RNC or the node plus (NB+) doctrine combination 3.
- the upper-layer network element is a multimedia gateway (MBMS Gateway, referred to as MGW for short).
- MGW multimedia gateway
- MCE multi-cell/multicast Coordination Entity
- the lower-layer network element is E-UTRAN NodeB.loch
- the present invention provides a synchronization method. Synchronous transmission between multiple network elements for services that configure radio interface resources in a time division multiplexing (TDM) manner.
- TDM time division multiplexing
- the instance upper-layer network element can schedule the data packet by setting the timestamp information of each data packet in the following manner:
- the time-stamp information is identified by the upper-layer network element according to the time of the service data packet received by the upper-layer network element, and is in a certain
- the service data packet received within a specific length interval identifies the same timestamp, where the specific length time interval is called the synchronization sequence length, or the scheduling period.
- the synchronization sequence of the specified service sent by the lower-layer network element to the upper-layer network element can calculate a scheduled transmission time interval, and schedule the transmission time interval.
- the length is a common multiple of the length of the TDM period and the length of the synchronization sequence of the upper layer network element.
- the method for obtaining the scheduling information of the upper layer network element by the lower layer network element may be as follows: Mode 1: Through the management configuration, the lower layer network element obtains the upper layer network element for the specified service configuration. Synchronization sequence length; mode 2: The upper layer network element sends a signaling message to the lower layer network element to notify the lower layer network element of the synchronization sequence length of the specified service.
- the lower layer network element starts from the start time of the next or current scheduled transmission time interval, and sequentially in the next or current scheduled transmission time.
- a packet of one or more synchronization sequences is transmitted among the available radio resources corresponding to the interval.
- the lower layer network element starts transmitting the first data packet of the service in the radio resource corresponding to the scheduled transmission time interval, first resets the next RLC sequence number of the service, and then sends one of the next RLC sequence time intervals.
- the TDM period of the service is set to be an integer multiple of the CFN period, so that the number of TDM periods allocated by the service is an integer value in one CFN period.
- FIG. 6 is a schematic diagram of a relationship between a TDM period, a synchronization sequence length, and a scheduled transmission time interval according to the present invention.
- the TDM period of the service is 2 TTIs
- the synchronization sequence length of the service is 3 TTIs, according to The TDM period and the length of the synchronization sequence can be calculated that the scheduled transmission time interval of the service can be a common multiple of 2 and 3.
- the least common multiple 6 of the two may be taken, and the scheduled transmission time interval of the service is 6 TTIs.
- the service data packets received in the current 6 frames can be sent in the available transmission time of the current 6 TDM cycles, or the available transmission time in the next 6 TDM cycles. Send within.
- FIG. 7 is a schematic diagram of a relationship between a TDM period, a synchronization sequence length, and a scheduled transmission time interval according to the present invention. As shown in FIG. 2, the TDM period of the service is 4, and the synchronization sequence length of the service is 2, according to The TDM period and the length of the synchronization sequence can be calculated.
- the scheduled transmission interval of the service can be a common multiple of 4 and 2, and the least common multiple of the two can be taken, and the scheduled transmission interval of the service is 8 ⁇ .
- the service data packets received in the current 8 ⁇ can be sent in the available transmission time of the current 8 T TDM periods, or the available transmission time in the next 8 T TDM periods. Send within.
- a synchronization scheduling apparatus is provided, which is preferably used to implement the method provided in the foregoing method embodiments.
- FIG. 8 is a structural block diagram of a synchronization scheduling apparatus according to an embodiment of the present invention. The apparatus is located on a lower layer network element side. As shown in FIG.
- the apparatus includes an ear module 10, a determining module 20, and a transmitting module 30.
- Each module is described in detail below.
- the obtaining module 10 is configured to acquire a plurality of synchronization sequences of the specified service from the upper-layer network element to which the home network belongs, wherein the upper-layer network element processes the data packet of the specified service according to the length of the synchronization sequence, and sends multiple synchronization sequences to the lower-layer network element.
- the synchronization sequence here is a group of data packets having the same timestamp information;
- the determining module 20 is connected to the obtaining module 10, and configured to determine a scheduling transmission time interval according to the synchronization sequence length and the time division multiplexing period of the specified service, where the scheduling The transmission time interval is a common multiple of the time division multiplexing period and the synchronization sequence length, and the time division multiplexing period of the designated service is a wireless interface connection.
- the sending module 30 is connected to the obtaining module 10 and the determining module 20, and is configured to synchronize the timestamp information in the current scheduled transmission time interval, and divide the time interval in the specified scheduling transmission time interval.
- the transmission is performed in a period of available transmission time, where the specified scheduling transmission time interval includes one of the following: a current scheduled transmission time interval, and a next scheduled transmission time interval.
- the service data is processed by the scheduling transmission time interval determined according to the synchronization sequence length of the service and the time division multiplexing period, and the radio interface resource in the TDM configuration situation can be avoided compared to the prior art.
- the resource allocation unevenness caused by the discontinuous distribution prevents the service synchronization sequence from overflowing and avoids the loss of service data.
- the service data is processed by the scheduling transmission time interval determined according to the synchronization sequence length of the service and the time division multiplexing period, compared to the prior art.
- the resource allocation unevenness caused by the discontinuous distribution of the radio interface resources in the case of the TDM configuration can be avoided, thereby preventing the service synchronization sequence from overflowing, and the synchronization sequence of the upper layer network element scheduling is inconsistent in the corresponding radio interface time, thereby transmitting data. Discarded situation.
- the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
- 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 |
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JP2011535858A JP5212956B2 (ja) | 2008-11-12 | 2009-03-31 | 同期スケジューリング方法および装置 |
EP09825716.5A EP2348778B1 (en) | 2008-11-12 | 2009-03-31 | Method and device of synchronization scheduling |
RU2011118128/07A RU2508613C2 (ru) | 2008-11-12 | 2009-03-31 | Способ и устройство для планирования синхронизации |
BRPI0915254-7A BRPI0915254B1 (pt) | 2008-11-12 | 2009-03-31 | Método e aparelho para agendamento de sincronização |
US13/128,918 US8654757B2 (en) | 2008-11-12 | 2009-03-31 | Method and apparatus of synchronization scheduling |
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CN2008101777267A CN101741701B (zh) | 2008-11-12 | 2008-11-12 | 同步调度方法和装置 |
CN200810177726.7 | 2008-11-12 |
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CN (1) | CN101741701B (zh) |
BR (1) | BRPI0915254B1 (zh) |
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WO (1) | WO2010054541A1 (zh) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101658204B1 (ko) * | 2010-12-17 | 2016-09-30 | 한국전자통신연구원 | 타임스탬프 예측 장치 및 방법 |
JP5257466B2 (ja) * | 2011-01-26 | 2013-08-07 | ブラザー工業株式会社 | 通信装置、通信システム、通信方法、及び通信プログラム |
CN102130954A (zh) * | 2011-03-17 | 2011-07-20 | 华为技术有限公司 | 数据资源传输的方法和设备 |
US9516524B2 (en) | 2011-10-25 | 2016-12-06 | Mediatek, Inc. | Transmitter assisted quality of service measurement |
JP5685313B2 (ja) * | 2012-06-08 | 2015-03-18 | ▲華▼▲為▼終端有限公司Huawei Device Co., Ltd. | ハートビート動作を同期させる方法及び装置 |
CN104158755B (zh) * | 2014-07-30 | 2017-12-05 | 华为技术有限公司 | 传输报文的方法、装置和系统 |
EP3229390B1 (en) * | 2014-12-31 | 2020-09-09 | Huawei Technologies Co., Ltd. | Device, system, and method for signal transmission and detection |
CN105101446B (zh) * | 2015-06-30 | 2017-12-15 | 宇龙计算机通信科技(深圳)有限公司 | 一种用于非授权频段的冲突避免方法及装置 |
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 |
CN107592668B (zh) * | 2016-07-07 | 2021-01-12 | 华为技术有限公司 | 传输信号的方法和装置 |
CN110337679B (zh) * | 2017-02-17 | 2021-12-31 | 日本电信电话株式会社 | 感测系统及时间戳校正方法 |
CN107888315B (zh) * | 2017-12-04 | 2019-06-18 | 清华大学 | 一种时间同步方法 |
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 |
CN112752227B (zh) * | 2019-10-30 | 2023-06-27 | 华为技术有限公司 | 一种通信方法及装置 |
US11580396B2 (en) | 2020-10-13 | 2023-02-14 | Aira Technologies, Inc. | Systems and methods for artificial intelligence discovered codes |
US11088784B1 (en) | 2020-12-24 | 2021-08-10 | Aira Technologies, Inc. | Systems and methods for utilizing dynamic codes with neural networks |
US11368251B1 (en) | 2020-12-28 | 2022-06-21 | Aira Technologies, Inc. | Convergent multi-bit feedback system |
US11477308B2 (en) | 2020-12-28 | 2022-10-18 | Aira Technologies, Inc. | Adaptive payload extraction in wireless communications involving multi-access address packets |
US11575469B2 (en) | 2020-12-28 | 2023-02-07 | Aira Technologies, Inc. | Multi-bit feedback protocol systems and methods |
US11483109B2 (en) | 2020-12-28 | 2022-10-25 | Aira Technologies, Inc. | Systems and methods for multi-device communication |
US11191049B1 (en) * | 2020-12-28 | 2021-11-30 | Aira Technologies, Inc. | Systems and methods for improving wireless performance |
US11489624B2 (en) | 2021-03-09 | 2022-11-01 | Aira Technologies, Inc. | Error correction in network packets using lookup tables |
US11496242B2 (en) | 2021-03-15 | 2022-11-08 | Aira Technologies, Inc. | Fast cyclic redundancy check: utilizing linearity of cyclic redundancy check for accelerating correction of corrupted network packets |
US11489623B2 (en) | 2021-03-15 | 2022-11-01 | Aira Technologies, Inc. | Error correction in network packets |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1852265A (zh) * | 2006-05-30 | 2006-10-25 | 杭州华为三康技术有限公司 | 一种同步帧在ip网络上传输的方法及用于传输的网络设备 |
CN101039175A (zh) * | 2007-03-27 | 2007-09-19 | 中兴通讯股份有限公司 | Rlc在无线网络控制器间同步的方法及系统 |
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 |
CN101123611A (zh) * | 2007-09-25 | 2008-02-13 | 中兴通讯股份有限公司 | 一种流媒体数据的发送方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US6654375B1 (en) * | 1998-12-24 | 2003-11-25 | At&T Corp. | Method and apparatus for time-profiling T-carrier framed service |
US7173899B1 (en) * | 2000-08-28 | 2007-02-06 | Lucent Technologies Inc. | Training and synchronization sequences for wireless systems with multiple transmit and receive antennas used in CDMA or TDMA systems |
EP1468580A1 (en) * | 2002-01-21 | 2004-10-20 | Siemens Mobile Communications S.p.A. | Method and mobile station to perform the initial cell search in time slotted systems |
KR100917042B1 (ko) * | 2002-08-14 | 2009-09-10 | 엘지전자 주식회사 | 무선 이동통신 시스템의 방송 및 멀티캐스트 데이터의전송 방법 |
US20060146745A1 (en) * | 2005-01-05 | 2006-07-06 | Zhijun Cai | Method and apparatus for scheduling and synchronizing a multimedia broadcast/multicast service |
EP1919235B1 (en) * | 2006-10-31 | 2020-04-15 | Alcatel Lucent | A base station, a mobile communication network and a method for synchronising the delivery of broadcast data in a single frequency mobile communication network |
US8144589B2 (en) * | 2007-05-07 | 2012-03-27 | Qualcomm Incorporated | Learning-based semi-persistent scheduling in wireless communications |
CN101321368B (zh) * | 2007-06-08 | 2012-05-09 | 中兴通讯股份有限公司 | 一种多媒体广播组播业务中时分复用机制的实现方法 |
CN101198096A (zh) * | 2007-12-29 | 2008-06-11 | 中国移动通信集团湖北有限公司 | 用于移动网络的多进程同步调度方法及其系统 |
-
2008
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1852265A (zh) * | 2006-05-30 | 2006-10-25 | 杭州华为三康技术有限公司 | 一种同步帧在ip网络上传输的方法及用于传输的网络设备 |
CN101039175A (zh) * | 2007-03-27 | 2007-09-19 | 中兴通讯股份有限公司 | Rlc在无线网络控制器间同步的方法及系统 |
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 |
CN101123611A (zh) * | 2007-09-25 | 2008-02-13 | 中兴通讯股份有限公司 | 一种流媒体数据的发送方法 |
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Also Published As
Publication number | Publication date |
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EP2348778B1 (en) | 2018-04-25 |
CN101741701B (zh) | 2012-01-11 |
US20110216787A1 (en) | 2011-09-08 |
US8654757B2 (en) | 2014-02-18 |
JP5212956B2 (ja) | 2013-06-19 |
BRPI0915254A2 (pt) | 2016-02-16 |
RU2508613C2 (ru) | 2014-02-27 |
EP2348778A1 (en) | 2011-07-27 |
CN101741701A (zh) | 2010-06-16 |
EP2348778A4 (en) | 2014-11-19 |
RU2011118128A (ru) | 2012-12-20 |
JP2012508534A (ja) | 2012-04-05 |
BRPI0915254B1 (pt) | 2020-12-15 |
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