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WO2011020290A1 - Procédé de relais et appareil correspondant - Google Patents

Procédé de relais et appareil correspondant Download PDF

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Publication number
WO2011020290A1
WO2011020290A1 PCT/CN2010/001237 CN2010001237W WO2011020290A1 WO 2011020290 A1 WO2011020290 A1 WO 2011020290A1 CN 2010001237 W CN2010001237 W CN 2010001237W WO 2011020290 A1 WO2011020290 A1 WO 2011020290A1
Authority
WO
WIPO (PCT)
Prior art keywords
symbol vector
time interval
symbol
relay
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2010/001237
Other languages
English (en)
Chinese (zh)
Inventor
张碧军
王河
汪勇刚
胡中骥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Shanghai Bell Co Ltd
Alcatel Lucent SAS
Original Assignee
Alcatel Lucent Shanghai Bell Co Ltd
Alcatel Lucent SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Lucent Shanghai Bell Co Ltd, Alcatel Lucent SAS filed Critical Alcatel Lucent Shanghai Bell Co Ltd
Publication of WO2011020290A1 publication Critical patent/WO2011020290A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission

Definitions

  • Embodiments of the present invention generally relate to the field of wireless transmission and, more particularly, to a relay method and apparatus therefor. Background technique
  • Multimedia Broadcast Multicast Service that is, single cell (SC) and multi-cell MBMS Single Frequency Network (MBSFN) transmission, is typically deployed in two scenarios.
  • relays to expand coverage, improve capacity, and improve message edge performance has been proposed in related discussions.
  • the hot topic of discussion is the half-duplex relay.
  • e-NBs base stations
  • FD relay The TD relay shares the same frequency resource in a time division manner for reception and transmission
  • the FD relay shares the same time resource in a frequency division manner for reception and transmission.
  • the relay resource allocation method of time division (TD) and frequency division (FD) is shown in FIGS. 7 and 8.
  • the e-NB transmits the packet to the relay device and the UE in subframe 0 (other time intervals can also be configured), and the relay device forwards the packet in different subframes 1 ( According to the type of the relay, it is directly forwarded or decoded and then forwarded after receiving.
  • the e-NB sends the packet to the relay in radio bearer 0 (which can also be configured with other granularity).
  • the device and the UE, the relay device uses different frequency resources, such as RB-1, to send the packet to the UE.
  • the relay device receives and transmits packets on different frequency resources. Regardless of which method is used for the half-duplex relay, there is an inherent delay between the relay device and its service e-NB since the reception and transmission at the relay device cannot be performed simultaneously. This situation is illustrated in detail in Figure 9. As shown in Figure 9, in order to avoid interference from the serving e-NB, the relay device sends a packet on subframe 1, such as pl, the service e-NB usually remains silent or simply sends the same packet (such as pi) to It is also possible for those UEs that receive the packet from the serving e-NB. Therefore, a valid packet (e.g., pi) is transmitted to the UE on two slots (subframe 0 and subframe 1). In other words, for this half-duplex relay transmission system, up to half rate is obtained.
  • subframe 1 such as pl
  • the service e-NB usually remains silent or simply sends the same packet (such as pi) to It is also possible for those UEs that receive the packet from the serving e-NB. Therefore
  • Embodiments of the present invention propose a relay method and apparatus therefor.
  • a relay method for use in a half-duplex relay comprising: transmitting the same first symbol vector to a relay device and a receiving device at a first time interval; Sending a second symbol vector to the receiving device at a second time interval, such that the receiving device acquires the first symbol according to the third symbol vector received on the first time interval and the fourth symbol vector received on the second time interval And a second symbol vector, where the third symbol vector includes a first symbol vector sent by the transmitting device, where the fourth symbol vector includes a second symbol vector sent by the transmitting device and a first symbol vector forwarded by the relay device.
  • a transmitting device comprising a processing unit, configured to instruct to send the same first symbol vector to the relay device and the receiving device at the first time interval, in the second Sending a second symbol vector to the receiving device at a time interval, such that the receiving device acquires the first symbol vector according to the third symbol vector received at the first time interval and the fourth symbol vector received at the second time interval And a second symbol vector, where the third symbol vector includes a first symbol vector indicated by the processing unit, and the fourth symbol vector includes a second symbol vector indicated by the processing unit and the first symbol vector forwarded by the relay device; And a transceiver unit, configured to send the first symbol vector and the second symbol vector according to the indication of the processing unit.
  • a relay device includes a receiving unit, configured to receive a first symbol vector sent by the transmitting device at a first time interval, and a sending unit, configured to Transmitting, to the receiving device, the first symbol vector received by the receiving unit on the second time interval, so that the receiving device receives the third symbol vector received on the first time interval and the fourth symbol vector received on the second time interval Obtaining a first symbol vector and a second symbol vector, where the third symbol vector includes a first symbol vector sent by the sending device, where the fourth symbol vector includes a second symbol vector sent by the sending device and a first symbol vector sent by the sending unit.
  • a receiving device comprising: a receiving device transceiver unit, configured to receive a third symbol vector from a transmitting device at a first time interval and to relay from a second time interval The device receives the fourth symbol vector; the symbol regenerating unit is configured to acquire, according to the third symbol vector and the fourth symbol vector, the first symbol vector and the second symbol vector sent by the sending device, where the third symbol vector includes the sending by the sending device A symbol vector, the fourth symbol vector includes a second symbol vector transmitted by the transmitting device and a first symbol vector forwarded by the relay device.
  • a system including the above-described transmitting device, relay device, and receiving device is also proposed.
  • the symbol vector is directly transmitted to the mobile terminal in the second time interval (such as the second subframe) without passing through the relay device, and the signal passing through the relay device is not relayed at the mobile terminal.
  • the signal of the device is processed to restore the symbol vectors respectively transmitted in each time interval, thereby obtaining full rate transmission of the symbol vector in the half duplex relay transmission system.
  • FIG. 1 The invention will be better understood by the following detailed description of embodiments of the invention, wherein: FIG.
  • FIG. 2 shows a block diagram of a base station according to an embodiment of the present invention
  • FIG. 3 shows a block diagram of a relay device according to an embodiment of the present invention
  • FIG. 4 shows a block diagram of a mobile terminal in accordance with an embodiment of the present invention
  • FIG. 5 shows a flow chart of a relay method according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram showing subframe occupation of symbol vector transmission according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram showing resource allocation in the case of time division multiplexing in the prior art.
  • FIG. 8 is a schematic diagram of resource allocation in the case of frequency division multiplexing in the prior art.
  • FIG. 9 is a schematic diagram showing the occupation of a subframe by symbol vector transmission in the prior art. Specific embodiment
  • An embodiment of the present invention provides a system for half-duplex relay transmission. As shown in FIG. 1, the following includes a sending device, a relay device, and a receiving device, where the sending device and the receiving device are respectively a base station and a mobile device. terminal.
  • An embodiment of the present invention further provides a transmitting device.
  • the sending device includes a processing unit 210, configured to indicate that the same first symbol vector is sent to the relay device and the receiving device at the first time interval. Transmitting, to the receiving device, a second symbol vector on the second time interval, such that the receiving device obtains according to the third symbol vector received on the first time interval and the fourth symbol vector received on the second time interval Taking a first symbol vector and a second symbol vector, where the third symbol vector includes a first symbol vector indicated by the processing unit 210, and the fourth symbol vector includes a second symbol vector indicated by the processing unit 210 and transmitted by the relay device.
  • the first symbol vector; the transmitting device transceiver unit 220 is configured to send the first symbol vector and the second symbol vector according to the instruction of the processing unit 210.
  • the sending device transceiver unit 220 is further configured to receive information about the channel reported by the receiving device.
  • the sending device further includes an encoding unit 230, configured to perform encoding according to the information about the channel.
  • the transmitting device also includes an encoding information memory 240 for storing information about the channel received by the transmitting device transceiving unit 220 and other information required for encoding, such as code words corresponding to various encodings.
  • the transmitting device also includes a symbol generation unit 250 for generating an original symbol vector for encoding unit 230 to encode as needed.
  • An embodiment of the present invention further provides a relay device, as shown in FIG. 3, including a receiving unit 310, configured to receive a first symbol vector sent by a sending device at a first time interval, and a sending unit 320, configured to Transmitting, by the receiving device, a symbol vector received by the receiving unit 310 on the second time interval, such that the receiving device receives the third symbol vector received on the first time interval and the fourth symbol vector received on the second time interval.
  • the apparatus also includes a power control unit 330 for adjusting the received symbol vector over the first time interval to ensure that the average transmit power of the transmitting unit 320 is constant.
  • the relay device further includes a power control policy library 340 for storing a pre-set power control policy for the power control unit 330 to use.
  • the power control strategy can include a plurality of power levels, and the power control unit 330 can select one of the power levels as the average transmit power of the signal transmitted by the transmitting unit 320.
  • the power level may be a plurality of actual power values, or may be in the form of half power, 1/4 power, or the like of a certain maximum power value.
  • the embodiment of the present invention further provides a receiving device, including a receiving device transceiver unit 410, configured to receive a third symbol vector on a first time interval and receive a fourth symbol vector on a second time interval; the symbol regeneration unit 420 And acquiring, by the third symbol vector and the fourth symbol vector received by the receiving device transceiver unit 410, the first symbol vector and the second symbol vector sent by the sending device, where the third symbol vector includes the first symbol sent by the sending device.
  • Vector, the fourth symbol vector contains the second symbol vector and the medium sent by the transmitting device The first symbol vector that is forwarded by the device.
  • the receiving device further includes an information collecting unit 440, configured to collect information of a channel between the receiving device and the transmitting device in real time or indirectly, and the channel feedback unit 430 is configured to report the data through the receiving device transceiver unit 410.
  • the information about the channel collected by the information collecting unit 440 is facilitated by the transmitting device to encode according to the information.
  • the receiving device further includes a decoding information memory 450 for storing decoding information corresponding to the encoding information stored by the encoding information memory of the transmitting device (eg, the decoding codeword and/or information collecting unit 440 collects Information about the channel).
  • the symbol reproducing unit 420 decodes the received symbol vectors (e.g., the third symbol vector and the fourth symbol vector) using the decoding information stored in the decoding information memory 450.
  • each of the components shown in FIGS. 2 to 4 can be implemented by a plurality of devices in practical applications.
  • the various components shown can also be integrated in a single chip or a device in practical applications.
  • the transmitting device, the relay device, and the receiving device may also include any unit and device for other purposes.
  • the relay device is located in the SFN area and the UE can receive signals from all serving e-NBs and relay them at the same time.
  • the signal power received from the relay device may be stronger than the signal power received from the serving e-NB.
  • the number of hops the maximum number of hops is 2, that is, the service e-NB ⁇ relay device-UE.
  • the service e-NB ⁇ relay device-UE For the sake of brevity, only the downlink for MBMS is considered.
  • Wireless link The link between the service e-NB and the relay device is wireless.
  • In-band relay transmission That is, the service e-NB ⁇ UE and the service relay device share the same downlink frequency band.
  • the aforementioned TD half-duplex relay and FD half-duplex relay are both in-band relays. For the sake of brevity, the following The TD half-duplex relay is used in the description.
  • LI AF Analog Forwarding Mode
  • L2 DF Decode Forwarding Mode
  • FIG. 5 is a relay method according to an embodiment of the present invention. As shown in FIG. 5, in step 510, a first symbol vector XI is transmitted to the relay device and the mobile terminal on the first subframe.
  • ⁇ 2, ⁇ and are column vectors of length ⁇ . Specifically, AND is the transmitted symbol vector of length ⁇ , that is, the first symbol vector and the second symbol vector described above. F is the symbol vector received by the relay device. And ⁇ 2 are the vectors of length ⁇ received, that is, the third symbol vector and the fourth symbol vector described above, respectively.
  • e-NBs Since SFN operation is performed for MBMS, it is first assumed that all e-NBs have a single transmit antenna. For simplicity, it is assumed that a single antenna is also used at the relay device and UEi, but in some embodiments of the invention it is not limited to using only one antenna. If it is a multi-antenna scenario, such as multiple input multiple output antenna (MIMO), in the embodiment of the present invention, as long as the relay device and the UE configure the required antenna, such as in 2x2 MIMO, the relay device and The UE configures two antennas, and 2x1 MIMO only needs to configure one antenna in the relay device and the UE.
  • MIMO multiple input multiple output antenna
  • the channel between the relay device and UEi is modeled as g.
  • the transmitting device transceiving unit 220 transmits the common symbol vector to the relay device and all UEs.
  • the signal vector received by the receiving unit 310 of the relay device is:
  • the signal vector received by the receiving device transceiver unit 410 of the UEi is:
  • N and P are independent and identically distributed additive white noise (AGWN), and P, i is the transmit power of the first e-NBi in the first subframe.
  • AGWN additive white noise
  • step 520 a second symbol vector 2 is transmitted to the mobile terminal on the second subframe.
  • the transmitting device transceiving unit 220 transmits a new common symbol vector; to the bent UE. Since the half-duplex relay device is in the transmit mode at this time, the symbol vector H is not received.
  • step 510 and step 520 may be the original symbol vector generated by the symbol generating unit 250, or the encoding unit 230 may encode one or more original symbols according to the encoding information stored in the encoding information memory 240.
  • the resulting symbol vector may be the original symbol vector generated by the symbol generating unit 250, or the encoding unit 230 may encode one or more original symbols according to the encoding information stored in the encoding information memory 240. The resulting symbol vector.
  • step 530 the power adjustment unit 330 of the relay device node adjusts the received signal vector to
  • ⁇ ⁇ ⁇ ⁇ (3)
  • ⁇ denotes a power adjustment factor to ensure that the average transmit power of the relay device node is ⁇ 2 .
  • the average transmit power ⁇ 2 can be derived from the power control strategy extracted by the power adjustment unit 330 from the power control policy library 340.
  • the transmitting unit 320 of the relay device transmits the adjusted signal vector ⁇ to all UEs (including UEi) below it.
  • the signal vector received by the receiving device transceiver unit 410 of the UEi is:
  • step 540 the mobile terminal acquires the sum Ja based on the signals received from the first subframe and the second subframe.
  • the total signal received by the receiving device transceiver unit 410 of UEi during one PTI may be expressed as follows - The above equation can be simplified as:
  • Equation (7) can also be simplified as follows:
  • the parameter p in equation (8) can be selected according to the actual situation.
  • the parameter p is a common coefficient extracted by making the calculation process simple.
  • the processing of the terminal regeneration unit 420 has the following three cases - the first case: Full diversity is obtained for the two original symbol vector pairs.
  • the symbol regeneration unit 420 can decode 5 and 52 (e.g., perform sphere decoding) using the ML (Maximum Likelihood) algorithm or the simplified algorithm based on the decoded information stored in the decoding information memory 450.
  • Array, DPC dirty paper coding
  • e-NB is it transmitted directly on the first subframe? .
  • the encoding unit 230 can pre-empt the interference from the DPC. Therefore, the symbol reproducing unit 420 of the mobile terminal can use the signal pair received on the first subframe based on the decoded information stored in the decoding information memory 450. Decoding is performed to obtain J using DPC decoding on the second sub-frame without interference.
  • the third case full diversity is only obtained for one original symbol, and diversity gain is not implemented for another symbol.
  • multi-user precoding can be used in the second subframe in this case.
  • the coding unit 230 can effectively remove inter-stream interference by multi-user precoding, that is, on the second subframe. Interference between and J.
  • the symbol reproducing unit 420 of the mobile terminal can first decode H according to the decoding information stored in the decoding information memory 450 and then can use the MRC (maximum ratio combining) according to the expression of the received signal on the two subframes. Decoding. Thus / obtain full diversity without obtaining diversity gain.
  • all the serving e-NBs transmit the common data to the relay device and all the receiving UEs. Unlike previous half-duplex relay device transmissions, all serving e-NBs transmit new common data to all UEs except for the relay device to transfer the received data to the UE during the second subframe.
  • all serving e-NBs transmit independent data during one PTI (eg, a total of 2N symbols), in other words, since the e-NB is sent from the serving e-NB to the UE within 2N symbol intervals A total of 2N symbols, no loss rate.
  • interface signaling e.g, signaling that supports full rate operation
  • the base station is required to indicate the presence of the relay device from the serving e-NB to the UE through the downlink signaling, whereby the UE can decode during the PTI operating.
  • DPC or multi-user precoding operations for the base station may require the channel feedback unit 430 of the mobile terminal to feed back some information, such as channel information, and is therefore more suitable for single cell MBMS transmission or unicast, these
  • the information can be collected by the information collecting unit 440 and stored in the encoded information memory 240 of the base station and the decoded information memory 450 of the mobile terminal.
  • the same downlink signaling is required to indicate the presence of a relay device for the user.
  • the proposed solution of the present invention can also be applied to a half-duplex relay in the FD mode.
  • the only difference is that in the FD mode, the relay device uses different frequencies for transmission and reception.
  • some embodiments also include a program-readable or computer-readable program storage device (eg, a digital data storage medium) and encoding machine-executable or computer-executable program instructions, wherein the instructions perform some of the above methods or All steps.
  • the program storage device can be a digital memory, a magnetic storage medium (such as a magnetic disk and magnetic tape), hardware, or an optically readable digital data storage medium.
  • Embodiments also include a programming computer that performs the steps of the above method.

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

Abstract

La présente invention porte sur un procédé de relais et un appareil correspondant. Le procédé de relais est utilisé dans un relais semi-duplex, et comprend les opérations suivantes : on adresse le même premier vecteur de symbole à un appareil de relais et un appareil de réception dans un premier intervalle, on adresse un deuxième vecteur de symbole à l'appareil de réception dans un deuxième intervalle afin de permettre à l'appareil de réception d'obtenir le premier vecteur de symbole et le deuxième vecteur de symbole conformément à un troisième vecteur de symbole reçu dans le premier intervalle et un quatrième vecteur de symbole reçu dans le deuxième intervalle, le troisième vecteur de symbole contenant le premier vecteur de symbole adressé par un appareil d'émission, et le quatrième vecteur de symbole contenant le deuxième vecteur de symbole adressé par l'appareil d'émission et le premier vecteur de symbole transmis par un appareil de relais. Au moyen de la présente invention, on peut réaliser une transmission à débit maximal des vecteurs de symbole dans un système de transmission à relais semi-duplex.
PCT/CN2010/001237 2009-08-17 2010-08-16 Procédé de relais et appareil correspondant Ceased WO2011020290A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910194455.0 2009-08-17
CN200910194455.0A CN101997599B (zh) 2009-08-17 2009-08-17 中继方法及其设备

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WO2011020290A1 true WO2011020290A1 (fr) 2011-02-24

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US10531411B2 (en) * 2014-05-09 2020-01-07 Deutsche Telekom Ag Improving or enabling radio coverage for a user equipment with respect to a mobile communication network

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7349665B1 (en) * 2003-12-17 2008-03-25 Nortel Networks Limited Method and apparatus for relaying a wireless signal
CN101197796A (zh) * 2007-10-23 2008-06-11 中科院嘉兴中心微系统所分中心 基于sc-fde和虚拟多天线的无线传感器网络信道估计方法
CN101414953A (zh) * 2007-10-19 2009-04-22 上海华为技术有限公司 中继系统中的数据发送方法、基站、中继站和终端

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007180597A (ja) * 2004-09-01 2007-07-12 Nokia Corp 中継器及び中継方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7349665B1 (en) * 2003-12-17 2008-03-25 Nortel Networks Limited Method and apparatus for relaying a wireless signal
CN101414953A (zh) * 2007-10-19 2009-04-22 上海华为技术有限公司 中继系统中的数据发送方法、基站、中继站和终端
CN101197796A (zh) * 2007-10-23 2008-06-11 中科院嘉兴中心微系统所分中心 基于sc-fde和虚拟多天线的无线传感器网络信道估计方法

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CN101997599A (zh) 2011-03-30

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