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WO2009039755A1 - Procédé, dispositif et système de partage de ressources de liaison ascendante - Google Patents

Procédé, dispositif et système de partage de ressources de liaison ascendante Download PDF

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Publication number
WO2009039755A1
WO2009039755A1 PCT/CN2008/072284 CN2008072284W WO2009039755A1 WO 2009039755 A1 WO2009039755 A1 WO 2009039755A1 CN 2008072284 W CN2008072284 W CN 2008072284W WO 2009039755 A1 WO2009039755 A1 WO 2009039755A1
Authority
WO
WIPO (PCT)
Prior art keywords
user terminal
resource
allocated
resources
uplink
Prior art date
Application number
PCT/CN2008/072284
Other languages
English (en)
Chinese (zh)
Inventor
Juejun Liu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009039755A1 publication Critical patent/WO2009039755A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission

Definitions

  • the present invention relates to the field of communications, and in particular to a method, device and system for uplink resource sharing. Background technique
  • the uplink (UL) direction is: the direction in which the wireless access terminal transmits data to the base station (BS); and the downlink direction is: the direction in which the base station transmits data to the wireless access terminal.
  • the wireless access terminal may include a mobile terminal (MS) and a fixed terminal (SS).
  • MS mobile terminal
  • SS fixed terminal
  • OFDMA Orthogonal Frequency Division Multiple Access
  • the orthogonality is maintained between different frequency resources, so the uplink and downlink resources of the BS are uniformly scheduled.
  • the BS may notify the scheduled radio access terminal by the control signaling, and the radio access terminal performs data transmission on the uplink resource allocated by the BS.
  • VoIP Voice over Internet Protocol
  • the VoIP service is a delay-sensitive service in which the voice coder generates a voice packet every 20 ms, and the voice packet is transmitted through a wireless air interface to provide voice services. Due to the periodic nature of VoIP services, the BS can periodically allocate resources to users to transmit VoIP services. According to the direction of VoIP service transmission, VoIP services can be classified into uplink VoIP and downlink VoIP.
  • the current 802.16e protocol provides support for unsolicited bandwidth allocation services (UGS) and extended real-time polling services (ertPS).
  • UGS unsolicited bandwidth allocation services
  • ertPS extended real-time polling services
  • the BS periodically allocates fixed-bandwidth resources to the user, allowing the user to transmit uplink data on the allocated resources.
  • the VoIP silent period ie, when the user is in the "listening" state
  • the user may not need to send data on the uplink or simply Send a background noise packet at regular intervals to maintain the link, so if you still follow UGS
  • the characteristics of the service are to allocate resources for these VoIP, so the allocated resources will be wasted when the VoIP is in the silent period.
  • the ertPS service also periodically allocates resources to users, but the BS can change the size of allocated resources or allocate resources according to user feedback. If the user finds that the VoIP at the next moment will be in the silent period, the BS can be notified by means of in-band signaling, and the BS can no longer allocate resources to the user at the next moment, and allocate resources to the VoIP service allocated to the user. For other users, when the user's VoIP service returns to the call state from the silent period, the user will perform a bandwidth request through the ranging channel, and the BS re-allocates resources for the user's VoIP service according to the bandwidth request.
  • the inventors have found that in the above prior art, when the VoIP user returns to the call state from the silent period, the user will send a bandwidth request through the competitive ranging channel. Since the competition is adopted, conflict collisions may occur, so the bandwidth request returned by the user may not be correctly parsed by the BS. When the BS does not allocate the corresponding resource for the user, the user can only continue to send the bandwidth request at the next moment, requesting to allocate resources for it, and the occurrence of this situation will not satisfy the VoIP service sensitivity to delay, thereby increasing VoIP transmission delay. In addition, due to the limitation of the bandwidth allocation of the ranging sub-channel, the user can perform the ranging operation to apply for the bandwidth only when the current sub-channel is allocated to the user.
  • a main object of the embodiments of the present invention is to provide a method, an apparatus, and a system for uplink resource sharing, so as to implement uplink resource sharing and make full use of uplink resources.
  • a method for uplink resource sharing is provided in the embodiment of the present invention, where the method includes:
  • reserve resources are reserved from the uplink resources allocated to the user terminal, so that the user terminal can use the reserved resource to send Sending an indication message; allocating uplink resources other than reserved resources to user terminals outside the user terminal for use.
  • An embodiment of the present invention further provides an apparatus for uplink resource sharing, where the apparatus includes: a determination module, a resource allocation module, and a sending module;
  • the determining module is configured to receive an indication message sent by the user terminal, determine the current state of the user terminal according to the indication information sent by the user terminal, and send the determination result to the resource allocation module, where the resource allocation module is configured to The received judgment result, when the current state of the user terminal is about to enter the silent period or in the silent period, the resource is reserved in the uplink resource allocated to the user terminal, and is allocated to the uplink resource of the user terminal. Allocating an uplink resource other than the reserved resource to the user outside the user terminal in the silent period; outputting the resource allocation message including the resource allocation information to the sending module;
  • the sending module is configured to send the received resource allocation message.
  • the embodiment of the present invention further provides a user terminal, where the user terminal includes: a feedback module, a message receiving module, and a data sending module;
  • the feedback module is configured to send an indication message
  • the message receiving module is configured to learn the allocated resource according to the received resource allocation message, and send the information of the allocated resource to the data sending module;
  • the data sending module is configured to send data by using the allocated resources according to the received information of the allocated resources.
  • An embodiment of the present invention further provides a system for uplink resource sharing, the system comprising: a device for sharing a user terminal and an uplink resource;
  • the user terminal is configured to send an indication message to the device for sharing the uplink resource, and receive a resource allocation message sent by the device that is shared by the uplink resource, and learn the allocated resource according to the received resource allocation message.
  • the uplink resource sharing device is configured to receive an indication message sent by the user terminal, and determine, according to the received indication information sent by the user terminal, a current state of the user terminal; when the current state of the user terminal is When entering the silent period or in the silent period, it is assigned to the user terminal. Allocating resources in the uplink resource, and allocating uplink resources other than reserved resources in the uplink resources allocated to the user terminal to users outside the user terminal; and transmitting resources including the information of the resource allocation Assign a message.
  • the embodiment of the present invention can be used to reserve a resource for the user terminal after the user terminal enters the silent period, so that when the user terminal is in the silent period, the resource originally allocated to the user terminal can be shared. Used by other user terminals, thereby improving the utilization of resources.
  • 1 is a schematic diagram of slot time-frequency resources in the prior art
  • FIG. 2 is a schematic diagram of slot time-frequency resources after being set according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for uplink resource sharing in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an apparatus for uplink resource sharing according to an embodiment of the present invention.
  • each slot is a continuous time frequency resource block (ie, a frequency sub-block).
  • the carrier ⁇ 0 0FDMA symbol can be mapped to physical resources through certain mapping rules. Different mapping rules can obtain different effects. For example, the effect of frequency diversity can be obtained by breaking up the time-frequency resources to the entire frequency band, and the frequency selective scheduling gain can be obtained by continuously mapping the time-frequency resources.
  • a certain subcarrier is reserved in each slot as a pilot subcarrier.
  • FIG. 1 is a schematic diagram of logical time-frequency resource allocation in the prior art. As shown in Figure 1, the black dot portion represents the pilot subcarrier, and the white dot portion represents the data subcarrier. Wave.
  • the logical time-frequency resource of the UL Slot is set, and a resource is reserved for the user terminal by reserving a certain time-frequency resource for each Slot resource block, so that the user terminal (for example, , VoIP user) can quickly return from the silent period to the call state through the reserved resources.
  • FIG. 3 is a flowchart of a method for uplink resource sharing in an embodiment of the present invention. As shown in FIG. 3, the method for uplink resource sharing in the embodiment of the present invention includes the following steps:
  • Step 301 The BS allocates all one UL slot to one VoIP user.
  • Step 302 The VoIP user transmits the UL VoIP packet on the physical resource corresponding to the UL slot.
  • the above steps 301 and 302 can form a cycle, and by the cycle as described above, the VoIP user can transmit data through the slot allocated by the BS.
  • the BS allocates a certain slot to the VoIP user in a certain period, if the VoIP is about to transition to the silent period, the following step 303 can be performed.
  • Step 303 When the VoIP user is about to transition to the silent period, the VoIP user carries an indication message in a last sent VoIP packet (the indication message may be in-band signaling mode), and notifies the BS that the message enters the silent period. .
  • Step 304 After receiving the foregoing indication message, the BS allocates the UL slot resource originally allocated to the VoIP user to other users by using control signaling, for example, to be used by a data service user, and The data service user is informed that the UL slot resource can be used, but the resource reserved in the UL slot resource cannot be used, that is, the frequency resource reserved for the part of the VoIP user marked "X" cannot be used.
  • Step 305 The other user, for example, the data service user, transmits data through the foregoing UL slot resource.
  • Step 307 The BS allocates all resources in the VoIP slot resource to the VoIP user for use according to the received indication information.
  • the VoIP user can send an indication information to the BS through the foregoing reserved resources at regular intervals during the silent period to notify the BS that the VoIP user also needs to maintain the uplink. Therefore, the meaning of the indication information sent by VoIP on the reserved resources can be pre-defined. For example, if the indication information is 1, it indicates that the VoIP user needs to return from the silent period to the call state; if the indication information is 0, it indicates that the VoIP user needs to maintain the uplink, but does not need to switch to the call state.
  • the above indication information can be transmitted by Binary Phase Shift Key (BPSK) modulation, and 1 of the above indication information can be mapped to symbol + 1 and information 0 can be mapped to symbol - 1; The symbol is repeated 16 times and then mapped to the corresponding physical subcarrier resource for transmission.
  • BPSK Binary Phase Shift Key
  • the number and location of the reserved resources mentioned above may be determined in advance by a protocol, or may be determined according to a certain algorithm. For example, in order to randomize interference, the reserved resources may be in different positions in each frame. The original VoIP user, the data user sharing the VoIP slot resource, and the BS can accurately calculate the location of the reserved resource in each frame according to the above protocols and algorithms. In addition, since the VoIP slot resource needs to be allocated to other users for sharing, in order not to affect the channel estimation of these users, the reserved resources may not occupy the resources occupied by the pilot subcarriers.
  • the shared user may be a data service user or another VoIP user. The scheduling of the resources of the original VoIP user during the silent period is completely determined by the BS.
  • the BS must ensure that the VoIP slot resource can be reassigned to the original VoIP user.
  • the shared user may still need data transmission, and the BS may All other idle resources continue to be assigned to shared users.
  • the case of allocating a slot for a VoIP user is introduced. If multiple slot resources need to be allocated for a VoIP user, the reservation may be reserved in each slot resource according to the foregoing reservation method. Certain resources. When the VoIP user is in the silent period, the BS can Multiple slot resources are allocated to one or more users. If the original VoIP user needs to return to the call state, the original VoIP user can send indication information to the BS on the resources reserved in each slot. Since there are more resources reserved, the original VoIP user can reduce the power of transmitting the indication information, thereby reducing interference to other users.
  • the BS may allocate resources to the user by using the resource assignment message. Therefore, in the foregoing method provided in the embodiment of the present invention, the resource assignment message of the BS needs to be modified accordingly, thereby The BS can be notified by the modified resource assignment message whether the user completely occupies resources or partially occupies resources.
  • the BS in the foregoing method allocates resources to the original VoIP user to completely occupy resources. At this time, the original VoIP user can use all the allocated resources to send data; and for the data service user in the above method, the BS The resource assignment of the data service user is partially occupied by resources, and the reserved resources cannot be used. Therefore, the data service user can only use other resources than the reserved resources to send data. This is also in line with the different requirements for different service QoS, that is, the VoIP service has higher delay requirements, so the VoIP user has higher priority than the data service user, and the performance of the Volp user should be prioritized.
  • the user terminal 400 is configured to send an indication message to the base station 401, and receive a resource allocation message sent by the base station 401, learn the allocated resource according to the received resource allocation message, and send the data by using the allocated resource;
  • the base station 401 is configured to receive an indication message sent by the user terminal 400, and determine, according to the received indication information sent by the user terminal 400, a current state of the user terminal 400; when the current state of the user terminal 400 is about to enter In the silent period or in the silent period, the resources are reserved in the uplink resources allocated to the user terminal 400, and the uplink resources other than the reserved resources in the uplink resources allocated to the user terminal 400 are allocated. At least one other user terminal other than the user terminal 400 is used; when the current state of the user terminal 400 is returned to the call state from the silent period, all the uplink resources allocated to the user terminal 400 are allocated to the user terminal 400 for use; Transmitting a resource allocation message including the information of the resource allocation described above to the user terminal 400 or His user terminal.
  • base station 401 can also receive data transmitted by user terminal 400 over the allocated resources.
  • the user terminal 400 further includes: a feedback module 402, a message receiving module 403, and a data sending module 404.
  • the feedback module 402 is configured to send an indication message to the base station 401.
  • the message receiving module 403 is configured to receive the resource allocation message sent by the base station 401, learn the allocated resource according to the received resource allocation message, and send the information of the allocated resource to the data sending module 404;
  • the data sending module 404 is configured to send data to the base station 401 by using the allocated resources according to the received information of the allocated resources.
  • the base station 401 includes: a determining module 405, a resource allocating module 406, and a sending module 407.
  • the determining module 405 is configured to receive the indication message sent by the user terminal 400, determine the current state of the user terminal 400 according to the received indication information sent by the user terminal 400, and send the determination result to the resource allocation module 406;
  • the resource allocation module 406 is configured to allocate resources to the user terminal 400 according to the received determination result, that is, when the current state of the user terminal 400 is about to enter a silent period or is in a silent period, then the user is allocated to the user terminal. Allocating resources in the uplink resources of 400, and allocating uplink resources other than the reserved resources in the uplink resources allocated to the user terminal 400 to at least one other user terminal except the user terminal 400; When the current state of the user terminal 400 is that the call state is returned from the silent period, all the uplink resources allocated to the user terminal 400 are allocated to the user terminal 400 for use; and the resource allocation message including the resource allocation information is output to the sending module. 407;
  • the sending module 407 is configured to send the received resource allocation message to the user terminal 400 and other user terminals;
  • the base station 401 can further include a data receiving module 408 for receiving data sent by the user terminal 400 through the allocated resources.
  • the above method and apparatus provided according to an embodiment of the present invention can be reserved for VoIP users
  • the method of less resources enables the VoIP user to send indication information to the BS through the reserved resource, and informs that the call will be returned to the call state, and the BS can immediately assign the corresponding resource to the VoIP user, thereby ensuring the transmission requirement of the VoIP service.
  • the foregoing reserved resource is not based on a contention manner, the performance of the indication information can be ensured by the VoIP user, that is, the BS can obtain the indication information sent by the VoIP user accurately and timely, and thus the VoIP user can be made. You can quickly return to the call state from the silent period.
  • the BS shares the resources originally allocated to the VoIP user to other users when the VoIP user is in the silent period the utilization of resources is improved.

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

Abstract

La présente invention concerne un procédé et un dispositif permettant le partage de ressources de liaison montante. Le procédé comprend : la réception d'un message d'indication envoyé par un terminal utilisateur en fonction du message d'indication envoyé par le terminal utilisateur décidant de l'état actuel du terminal utilisateur ; quand l'état du terminal utilisateur est sur le point d'entrer dans une période de silence ou est dans une période de silence, la réservation de ressources de réserve depuis les ressources de liaison montante attribuées au terminal utilisateur et le terminal utilisateur peut utiliser les ressources de réserve pour envoyer le message d'indication ; l'attribution de ressources de liaison montante autres que les ressources de réserve aux terminaux utilisateurs autres que ce terminal utilisateur.
PCT/CN2008/072284 2007-09-20 2008-09-06 Procédé, dispositif et système de partage de ressources de liaison ascendante WO2009039755A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007101519260A CN101394586B (zh) 2007-09-20 2007-09-20 一种上行链路资源共享的方法、装置及系统
CN200710151926.0 2007-09-20

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WO2009039755A1 true WO2009039755A1 (fr) 2009-04-02

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BR112012022206A2 (pt) 2010-03-01 2017-10-03 Interdigital Patent Holdings Inc Método e aparelho para realizar alocações de uplink híbridas por estação e por fluxo
CN101883414B (zh) * 2010-06-17 2014-04-09 中兴通讯股份有限公司 集群系统中减少前向发送功率的方法及基站
CN101990082B (zh) * 2010-11-03 2014-07-16 中兴通讯股份有限公司 一种实现可视电话的方法及装置
US9596698B2 (en) * 2012-02-09 2017-03-14 Telefonaktiebolaget L M Ericsson (Publ) Full and partial resource access in RAN sharing
CN103581868B (zh) * 2012-07-19 2017-09-29 华为技术有限公司 一种感知静默期配置方法、装置及系统
CN103167629B (zh) * 2013-03-22 2015-06-24 哈尔滨工业大学 公网td-lte下基于群组的脱网直通通信方法
US10091789B2 (en) * 2015-08-19 2018-10-02 Qualcomm, Incorporated Re-contention-based co-existence on a shared communication medium
CN106941725B (zh) * 2016-01-04 2020-04-21 中国移动通信集团公司 一种上行数据的发送方法、装置、用户设备及基站

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CN1842197A (zh) * 1997-03-27 2006-10-04 诺基亚电信公司 在分组无线网络中为移动站分配无线电资源的方法
WO2006115391A1 (fr) * 2005-04-28 2006-11-02 Samsung Electronics Co., Ltd. .procede de demande d'allocation de ressources de liaison montante pour un service de centralisation en temps reel etendu dans un systeme de communication sans fil

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CN1842197A (zh) * 1997-03-27 2006-10-04 诺基亚电信公司 在分组无线网络中为移动站分配无线电资源的方法
CN1290460A (zh) * 1998-02-13 2001-04-04 艾利森电话股份有限公司 分组数据通信系统中用上行线路状态标志指示可变块调度的方法
WO2006115391A1 (fr) * 2005-04-28 2006-11-02 Samsung Electronics Co., Ltd. .procede de demande d'allocation de ressources de liaison montante pour un service de centralisation en temps reel etendu dans un systeme de communication sans fil

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CN101394586B (zh) 2012-11-21

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