WO2005079021A1 - Multicast transmission method, system and communication station - Google Patents
Multicast transmission method, system and communication station Download PDFInfo
- Publication number
- WO2005079021A1 WO2005079021A1 PCT/IB2005/050491 IB2005050491W WO2005079021A1 WO 2005079021 A1 WO2005079021 A1 WO 2005079021A1 IB 2005050491 W IB2005050491 W IB 2005050491W WO 2005079021 A1 WO2005079021 A1 WO 2005079021A1
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- WO
- WIPO (PCT)
- Prior art keywords
- data
- stations
- station
- retransmission
- transmitting
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
- H04L12/1868—Measures taken after transmission, e.g. acknowledgments
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1874—Buffer management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
Definitions
- the invention relates to a method of multicast transmission, to a system for multicast transmission, and to communication stations for use in a multicast transmission system.
- a Multimedia Broadcast Multicast Service (MBMS) is being introduced to the Universal Mobile Telecommunication System (UMTS) which will enable the reliable transmission of shared data to a potentially very large number of recipients.
- UMTS Universal Mobile Telecommunication System
- Retransmission schemes for the reliable delivery of data in multicast systems also known as point-to-multipoint systems, are known.
- Such schemes usually imply the use of some form of feedback mechanism between the receivers, known in UMTS terminology as User Equipments (UEs), and the network, known in UMTS terminology as NodeB, enabling MBMS UEs to request retransmission of failed packets from an MBMS session.
- UEs User Equipments
- NodeB the network
- a UE could indicate that it needs a retransmission or wants to fetch some missing data following erroneous reception, using some form of feedback signalling in an uplink physical channel between the UE and the NodeB to carry "on-demand" retransmission requests, for example taking the form of a positive acknowledgment (ACK) when the UE receives a multicast packet correctly, indicating no need to retransmit, or a negative acknowledgement (NACK) when the UE detects some packet error or loss, indicating a need or a request to retransmit that piece of data.
- ACK positive acknowledgment
- NACK negative acknowledgement
- a large amount of feedback signalling can be generated when the number of recipients is large.
- Possible existing uplink channels in UMTS, that is in the direction UE to NodeB, which could be reused for the feedback include Dedicated Channels (DCH) and the Random Access Channel (RACH).
- DCH Dedicated Channels
- RACH Random Access Channel
- the existing RACH is divided in a time-division manner into sets of Access Slots.
- Each set of Access Slots can be assigned to transmissions of a given priority level, known as an Access Service Class (ASC).
- ASC Access Service Class
- the UE chooses a random access slot and transmits a preamble using a randomly-selected signature to minimise the probability of collisions occurring due to different UEs choosing the same access slot and signature.
- the DCH transport channel in UMTS could be used to carry feedback signalling in the uplink physical channel for implementing point- to-point retransmission through dedicated feedback signalling .
- this would give rise to a huge increase in uplink traffic due to feedback signalling when many individual UEs need retransmissions, some of the feedback signalling would be redundant when a number of UEs need and ask for retransmission of the same data, and significant delay may occur while a DCH is set up.
- An objective of the invention is to provide improved multicast transmission.
- a method of operating a multicast transmission system comprising a first station and a plurality of second stations, the method comprising at the first station, transmitting data; at each of the second stations: receiving the data; determining whether the received data is fully decodable; if the data is not fully decodable, transmitting a reply signal; and at the first station: receiving the reply signal from at least one of the second stations, and in response to receiving the reply signal, retransmitting at least a portion of the data; further comprising the reply signal being devoid of an indication of the identity of the transmitting second station; at the first station: selecting, for retransmitting the data, between a dedicated mode in which the data is addressed to one of the second stations and a broadcast mode in which the data is broadcast to a plurality of the second stations; in response to selecting the dedicated mode and prior to the retransmission, transmitting a further signal; at each of the second stations which transmitted the reply signal, in response to receiving the further signal,
- a communication station for use in a multicast transmission system comprising a plurality of second stations, the communication station comprising: means for transmitting data; means for receiving a reply signal from at least one of the second stations, and means responsive to receiving the reply signal for retransmitting at least a portion of the data; further comprising means for selecting, for retransmitting the data, between a dedicated mode in which the data is addressed to one of the second stations and a broadcast mode in which the data is broadcast to a plurality of the second stations; means responsive to selecting the dedicated mode for transmitting a further signal; means for receiving an indication of identity transmitted by a second station; and means for employing the indication of identity to address the retransmission to one of the second stations.
- a communication station for use in a multicast transmission system, the communication station comprising: means for receiving data; means for determining whether the received data is fully decodable; and means responsive to the data not being fully decodable for transmitting a reply signal devoid of an indication of identity of the communication station; and means responsive to receiving a further signal for transmitting an indication of identity of the communication station; means for receiving a retransmission of at least a portion of the data whether addressed to the communication station or whether broadcast.
- the invention uses a random access channel for feedback signalling.
- a retransmission request message transmitted by a second station which may be a UE, consists of two parts, the first part specifying the unit of data to be retransmitted, and the second part comprising an identification (ID) of the second station. Other information may also be included in either part of the message.
- ID an identification
- An important aspect of the invention is that the transmission of the second, identification part is dependent on the type of response received from the first station, which may be a NodeB, to the first part of the retransmission request.
- the initial transmission of data is in a broadcast mode, also known as a multicast mode, and on receipt of a retransmission request the first station makes a decision as to whether the retransmitted data should be transmitted in broadcast mode or dedicated mode, and determines accordingly what type of acknowledgement signal, to transmit in response to the retransmission requests. If the first station decides to use a broadcast mode to retransmit the requested data unit, it may transmit a first signal to the second stations which requested retransmission of that data unit to prevent those second stations from transmitting their IDs. Alternatively, if the first station decides to retransmit using dedicated channels, it transmits a second signal instructing those second stations to continue with the second part of their transmission including their ID.
- a broadcast mode also known as a multicast mode
- the decision between broadcast and dedicated modes, and hence between the first and second signals, may be based on an estimate of the number of second stations requesting retransmission of a particular data unit.
- transmission of the first signal may be omitted, with the first station proceeding directly with the retransmission.
- Figure 1 is a flow chart of a method of operating a multicast system in accordance with the invention
- Figure 2 is a block schematic diagram of a multicast system comprising a first station 100 and a second station 200.
- the method steps on the left side of the drawing relate to steps performed by a first station 100, which in the context of UMTS would be a NodeB base station, and the method steps on the right side of the drawing relate to steps performed by each of a plurality of second stations
- the method commences at step 10 with the transmission of data from a first station 100. This initial transmission is in a broadcast mode in which individual recipients are not addressed in the transmission.
- the data is received by a number of second stations 200, and decoded at step 14.
- each second station 200 determines whether the data is fully decodable, according to a predetermined criterion. This decision may take account of portions of the data transmitted previously. In some applications, the data may be regarded as fully decodable despite some residual errors, if the residual errors are tolerable.
- a positive acknowledgement ACK is transmitted at step 18 to indicate that no retransmission is required by that second station 200.
- a negative acknowledgement NACK is transmitted at step 20 to indicate that retransmission is required by that second station 200.
- the NACK may indicate one or more portions of the data for which a retransmission is required. If all of the second stations 200 transmit an ACK, and these acknowledgements are received by the first station 100, no retransmission is required and so the first station 100 may proceed to transmit more data at step 10, or terminate the process if there is no more data to be transmitted. At step 22 any negative acknowledgements NACK are received by the first station 100.
- the first station 100 determines whether the retransmission should be transmitted in a broadcast mode, in which individual recipients are not addressed in the retransmission, or in a dedicated mode, in which an individual recipient is addressed in the retransmission.
- the decision between broadcast and dedicated modes may be based on an estimate of the number of second stations 200 requesting retransmission of a particular data unit.
- the estimate of the number of second stations 200 may be derived from an estimate of the amount of received signal energy corresponding to the received negative acknowledgements, or from the number of autocorrelation peaks detected for that signal.
- alternative actions are selected according to which mode was selected at step 24. If a broadcast mode is selected, then at step 30 the retransmission is made comprising a portion or the whole of the data.
- a signal referred to in Figure 1 as a first signal, may be transmitted which prevents the requesting second stations 200 from transmitting their identification.
- the first station may omit the transmission of the first signal and proceed with the retransmission.
- flow proceeds from step 12 again.
- the first station 100 transmits another signal, referred to in Figure 1 as a second signal, instructing the requesting second stations 200 to transmit their identifications (IDs).
- IDs identifications
- the first and second signals may be acknowledgements.
- the first signal may be a negative acknowledgement and the second signal may be a positive acknowledgement, or alternatively the first signal may be a positive acknowledgement and the second signal may be a negative acknowledgement.
- the requesting second stations 200 receive the second signal and at step 36 transmit their IDs.
- the IDs are received by the first station 100 and at step 40 the first station encodes the data for retransmission, using an ID to address the retransmission to an individual second station 200.
- the encoded data is retransmitted. Thereafter, a conventional retransmission protocol may be used to ensure delivery of the data to the individual second station 200. Subsequently steps 40 and 42 are repeated for the other second stations that have identified themselves.
- the first station 100 which in the case of UMTS may be a NodeB, comprises a processing means 120 for receiving data on an input 110.
- An encoder 130 is coupled to the processing means 120 for encoding the data, either the initial data or the retransmission of the whole data, or portion of the data.
- the encoder is also coupled to a transmitter 140 for transmitting the encoded data.
- the transmitter 140 is coupled to an antenna 150.
- a receiver 160 for receiving reply signals (ACK and NACK) transmitted by the second stations 200.
- a decoder 170 is coupled to the receiver 160 for decoding the received reply signals, and is coupled to the processor 120 for supplying the decoded reply signals to the processor 120.
- a mode selector 180 is coupled to the processor 120 for determining, based on the acknowledgements received in reply to the transmission of data, whether a retransmission of data should use a broadcast mode or dedicated mode. Coupled to the mode selector 180 is a signal source which generates either the first or second signal, depending on which mode is selected for the retransmission, as described above with reference to Figure 1. The signal source is coupled to the transmitter 140 for transmission of the first or second signal. If the second signal is transmitted in response to the acknowledgements received from the second stations 200, the IDs transmitted by the second stations are received by the receiver 160, decoded by the decoder 170, and transferred to the processor 120.
- the encoder 130 is adapted to encode retransmissions using an ID of a second station 200 to address the retransmission to that individual second station 200 in the case that the mode selector 180 has selected the dedicated mode, or to encode retransmissions without addressing an individual second station 200 in the case that the mode selector 180 has selected the broadcast mode.
- the second station 200 which in the case of UMTS may be a UE, comprises a receiver 260 coupled to an antenna 250 for receiving signals from the first station 100, and a decoder 270 coupled to the receiver 260 to decode the received signals.
- the processor 220 When data is received and decoded, if the data is fully decodable, the processor 220 delivers the data on an output 210 and generates a positive acknowledgement for transmission, and if the data is not fully decodable, the processor 220 generates a negative acknowledgement requesting retransmission of all, or a portion of, the data.
- An encoder 230 is coupled to the processor 120 for encoding the reply acknowledgement, and is coupled to a transmitter 240 for transmission of the reply via the antenna 250.
- the processor 220 determines whether to generate an identification signal for transmission, in the case that the second signal is received as a result of the first station 100 selecting the dedicated mode for a retransmission, or refrain from generating an identification signal in the case that the first signal is received as a result of the first station 100 selecting the broadcast mode.
- the UE may format the reply acknowledgement according to the following rules, which are designed to cause requests from different UEs for retransmission of the same data unit to collide, in contrast to the normal UMTS RACH procedure which uses random functions to minimise the risk of collision.
- RACH access slots are designated specifically for MBMS use. This can be done for example by: • defining a new Access Service Class specifically for MBMS feedback signalling, where the new Access Service Class would not be used by second stations 200 which are not MBMS-capable), or • defining a specific set of access slots as being reserved for MBMS feedback signalling; these access slots would not then be able to be allocated by the Radio Network Controller (RNC) for any of the non- MBMS ASCs.
- RNC Radio Network Controller
- the behaviour of a UE on receipt of the first or second signal, such as a positive or negative acknowledgement, from a NodeB may be modified compared to the normal UMTS RACH procedure.
- Two possibilities are: a) If the UE receives a positive acknowledgement, it transmits the message part containing its ID, thereby enabling the NodeB to transmit the retransmission in dedicated mode. If the UE receives a negative acknowledgement, or no acknowledgement, it shall not transmit the message part containing its ID, and expects the retransmission to be broadcast. b) If the UE receives a positive acknowledgement, it does not transmit the message part containing its ID, in contrast to the normal RACH procedure where receipt of a positive acknowledgement is the indication that the message part should be transmitted.
- the UE would expect the retransmission to be broadcast. If the UE receives a negative acknowledgement, it does not transmit the message part containing its ID and further it shall not transmit another RACH preamble using the access slot and signature corresponding to the same data unit, but should switch to a different
- specific RACH access slots or groups of access slots can be allocated for MBMS feedback signalling for specific MBMS services or sessions.
- specific UEs are allocated to specific RACH access slots or groups of access slots according to the quality of reception of UEs, separating UEs into groups according to quality metrics such as: • E b No over a predetermined time period • the number or proportion of packets previously received successfully in a predetermined time window.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05702916A EP1714444A1 (en) | 2004-02-12 | 2005-02-08 | Multicast transmission method, system and communication station |
JP2006552747A JP2007523542A (en) | 2004-02-12 | 2005-02-08 | Multicast transmission method, system, and communication station |
US10/589,108 US20070174885A1 (en) | 2004-02-12 | 2005-02-08 | Multicast transmission method, system and communication station |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0403128.2 | 2004-02-12 | ||
GBGB0403128.2A GB0403128D0 (en) | 2004-02-12 | 2004-02-12 | Multicast transmission |
Publications (1)
Publication Number | Publication Date |
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WO2005079021A1 true WO2005079021A1 (en) | 2005-08-25 |
Family
ID=32011797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2005/050491 WO2005079021A1 (en) | 2004-02-12 | 2005-02-08 | Multicast transmission method, system and communication station |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070174885A1 (en) |
EP (1) | EP1714444A1 (en) |
JP (1) | JP2007523542A (en) |
KR (1) | KR20060111693A (en) |
CN (1) | CN1918862A (en) |
GB (1) | GB0403128D0 (en) |
WO (1) | WO2005079021A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006031562A2 (en) * | 2004-09-09 | 2006-03-23 | Telcom Ventures, L.L.C. | Millimeter microwave point-to-multipoint broadcasting systems, components and methods that monitor and rebroadcast data packets |
WO2008021573A2 (en) * | 2006-08-18 | 2008-02-21 | Interdigital Technology Corporation | Sending and reducing uplink feedback signaling for transmission of mbms data |
WO2008136463A1 (en) * | 2007-05-01 | 2008-11-13 | Ntt Docomo, Inc. | Base station device and communication control method |
EP2033340A1 (en) * | 2006-06-21 | 2009-03-11 | LG Electronics Inc. | Method for supporting quality of multimedia broadcast multicast service (mbms) in mobile communications system and terminal thereof |
WO2010025360A2 (en) * | 2008-08-29 | 2010-03-04 | Interdigital Patent Holdings, Inc. | Method and apparatus for sending feedback for a downlink shared service and estimating a number of wireless transmit/receive units |
WO2011040792A3 (en) * | 2009-10-01 | 2011-08-25 | Samsung Electronics Co., Ltd. | Lte-a system and uplink power control method thereof |
US8509076B2 (en) | 2006-10-10 | 2013-08-13 | Interdigital Technology Corporation | Method and apparatus for sending feedback for a downlink shared service transmitted to a plurality of wireless transmit/receive units |
US8570956B2 (en) | 2006-06-21 | 2013-10-29 | Lg Electronics Inc. | Method of communicating data in a wireless mobile communications system using message separation and mobile terminal for use with the same |
US8644250B2 (en) | 2006-01-05 | 2014-02-04 | Lg Electronics Inc. | Maintaining communication between mobile terminal and network in mobile communication system |
US8971288B2 (en) | 2006-03-22 | 2015-03-03 | Lg Electronics Inc. | Method of supporting handover in a wireless communication system |
US8995365B2 (en) | 2009-08-25 | 2015-03-31 | Interdigital Patent Holdings, Inc. | Method and apparatus for managing group communications |
WO2017153628A1 (en) * | 2016-03-11 | 2017-09-14 | Nokia Technologies Oy | Feedback signaling management |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070047124A (en) * | 2005-11-01 | 2007-05-04 | 엘지전자 주식회사 | Method for transmitting and receiving wireless resource information |
JP4482587B2 (en) * | 2006-01-31 | 2010-06-16 | パナソニック株式会社 | Radio communication system, radio transmission apparatus, and RACH transmission method |
CN101291193B (en) * | 2007-04-19 | 2013-04-24 | 华为技术有限公司 | Method and base station for retransmitting packets |
EP2168385B1 (en) * | 2007-06-20 | 2018-11-14 | Nokia Solutions and Networks Oy | Avoiding collisions between semi-persistent allocation and dynamic allocation in radio access networks |
CN101119220B (en) * | 2007-09-24 | 2010-06-09 | 中兴通讯股份有限公司 | Gb passive optical network based multicast service implementing method and apparatus |
CN101184050B (en) * | 2007-12-24 | 2011-04-13 | 杭州华三通信技术有限公司 | Distributed node multicast method, distributed node multicast component and distributed system |
KR20090088771A (en) * | 2008-02-15 | 2009-08-20 | 삼성전자주식회사 | Apparatus and method for transmitting notification message via the interactive channel in digital video broadcasting system |
CN102106163B (en) * | 2008-08-07 | 2014-07-02 | 上海贝尔股份有限公司 | Method, base station and mobile terminal for implementing multicast retransmission by using network coding |
KR20100083271A (en) * | 2009-01-13 | 2010-07-22 | 삼성전자주식회사 | Method and apparatus for sharing mobile broadcasting service |
JP6032756B2 (en) * | 2010-12-22 | 2016-11-30 | フィリップス ライティング ホールディング ビー ヴィ | Lighting device |
GB2491834B (en) * | 2011-06-13 | 2017-03-01 | Neul Ltd | Acknowledgment mechanism |
GB201114079D0 (en) | 2011-06-13 | 2011-09-28 | Neul Ltd | Mobile base station |
US20140162687A1 (en) | 2012-12-10 | 2014-06-12 | Qualcomm Incorporated | Techniques for determining a state of proximity between mobile devices |
US9479961B2 (en) | 2013-09-09 | 2016-10-25 | At&T Intellectual Property I, L.P. | Facilitating multicast traffic collision reduction |
ES2926488T3 (en) * | 2017-02-17 | 2022-10-26 | Tdf | Redundancy data transmission in a hybrid network system |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3133347A1 (en) * | 1981-08-22 | 1983-03-10 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | METHOD FOR ACCESSING TRANSMISSION CHANNELS OF A MESSAGE TRANSMISSION SYSTEM |
US5550809A (en) * | 1992-04-10 | 1996-08-27 | Ericsson Ge Mobile Communications, Inc. | Multiple access coding using bent sequences for mobile radio communications |
JPH09270790A (en) * | 1996-04-01 | 1997-10-14 | N T T Data Tsushin Kk | File distribution method and communication controller |
JP3605029B2 (en) * | 1999-11-10 | 2004-12-22 | 日本電信電話株式会社 | Packet arrival confirmation method and center station |
RU2262202C2 (en) * | 1999-11-29 | 2005-10-10 | Самсунг Электроникс Ко., Лтд. | Device and method for assigning common packet channel in mobile communications system |
WO2001078324A1 (en) * | 2000-04-06 | 2001-10-18 | Ntt Docomo, Inc. | Multicasting method, multicasting system, mobile station and base station |
US6771632B2 (en) * | 2000-12-19 | 2004-08-03 | Interdigital Technology Corporation | Sub-channels for the random access channel in time division duplex |
FI20011392A (en) * | 2001-06-28 | 2002-12-29 | Nokia Corp | Procedure for multicast distribution in a telecommunications system |
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2004
- 2004-02-12 GB GBGB0403128.2A patent/GB0403128D0/en not_active Ceased
-
2005
- 2005-02-08 CN CNA2005800045815A patent/CN1918862A/en active Pending
- 2005-02-08 WO PCT/IB2005/050491 patent/WO2005079021A1/en not_active Application Discontinuation
- 2005-02-08 EP EP05702916A patent/EP1714444A1/en not_active Withdrawn
- 2005-02-08 KR KR1020067016114A patent/KR20060111693A/en not_active Application Discontinuation
- 2005-02-08 US US10/589,108 patent/US20070174885A1/en not_active Abandoned
- 2005-02-08 JP JP2006552747A patent/JP2007523542A/en active Pending
Non-Patent Citations (3)
Title |
---|
3GPP: "Technical Specification Group Services and System Aspects; Multimedia Broadcast/Multicast Service (MBMS) user services; Stage 1 (Release 6)", 3GPP TS22.246 V6.0.0, January 2004 (2004-01-01), pages 1 - 16, XP002328288, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/Specs/archive/22_series/22.246/22246-600.zip> [retrieved on 20050513] * |
PHILIPS: "Fetch of missing packets for MBMS", 3GPP TSG RAN WG2#41, R2-040542, 16 February 2005 (2005-02-16), pages 1 - 4, XP002328290, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_36/Docs_RAN2_for%20_Joint/R2-040542.zip> [retrieved on 20050513] * |
PHILIPS: "Some considerations on the L2 design of the RB carrying MBMS (update)", TSG-RAN WG2, TSGR2#37(03)2146, 25 August 2003 (2003-08-25), pages 1 - 5, XP002328289, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_38/Docs/R2-032146.zip> [retrieved on 20050513] * |
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Also Published As
Publication number | Publication date |
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US20070174885A1 (en) | 2007-07-26 |
GB0403128D0 (en) | 2004-03-17 |
KR20060111693A (en) | 2006-10-27 |
JP2007523542A (en) | 2007-08-16 |
EP1714444A1 (en) | 2006-10-25 |
CN1918862A (en) | 2007-02-21 |
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