WO2004077853A1 - Procede d'affectation de ressources dans un systeme de communication - Google Patents

Procede d'affectation de ressources dans un systeme de communication Download PDF

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Publication number
WO2004077853A1
WO2004077853A1 PCT/CN2004/000103 CN2004000103W WO2004077853A1 WO 2004077853 A1 WO2004077853 A1 WO 2004077853A1 CN 2004000103 W CN2004000103 W CN 2004000103W WO 2004077853 A1 WO2004077853 A1 WO 2004077853A1
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WO
WIPO (PCT)
Prior art keywords
communication
resources
link
control unit
resource
Prior art date
Application number
PCT/CN2004/000103
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English (en)
Chinese (zh)
Inventor
Hao Hu
Sha Ma
De Chen
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 WO2004077853A1 publication Critical patent/WO2004077853A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a resource allocation method in a communication system. Background of the invention
  • the wireless communication system has developed from the initial analog communication era of frequency division multiple access (FDMA) to the current third generation (3G) mobile communication era.
  • the service type of the communication service has also developed from the original pure voice service to the current high-speed data transmission service.
  • multiple users generally share limited shared resources in the communication system.
  • users can share different resources.
  • multiple users can share a frequency band, a time period, or a code channel.
  • FIG. 1 in FDMA, the entire system bandwidth is divided into frequency channels and allocated to each user, and each user uses their own frequency channels to complete communication.
  • FIG. 1 the entire system bandwidth is divided into frequency channels and allocated to each user, and each user uses their own frequency channels to complete communication.
  • each Frequency channels are divided into time slots, and each user is arranged in a respective time slot, and each time slot is used as a bearer resource of communication information to transmit information to complete communication.
  • CDMA code division multiple access
  • each user is assigned a unique coding sequence, that is, a spreading code, which is used to encode the information signal of the bearer. After the receiver obtains the user's spreading code, the receiver can decode the received signal and restore the original signal. The data is used to complete the communication.
  • the spreading code is used as the information bearing resource.
  • each communication system needs to complete the allocation of information bearer resources to each user, and this problem is even more important with the current increasing number of communication users. If this problem is solved well, the use efficiency of the communication system can be greatly improved. On the contrary, it will have a negative impact on the use of the communication system.
  • non-interactive communication the two communicating parties only perform one-way communication. Therefore, it is only necessary to allocate the unidirectional links required by the two communicating parties respectively.
  • Resources For interactive communication, the communicating parties need to complete both the sending and receiving functions, and the communicating parties send and receive each other to complete the interactive communication.
  • the communication needs to be completed with the help of the sending direction link and the receiving direction link, and the uplink and downlink are generally used as the sending direction link and the receiving direction link, respectively.
  • the current technology is generally based on Two irrelevant instructions to complete the allocation of uplink and downlink information bearer resources for each user respectively. For example in the second generation
  • (2G) In the global mobile communication system (GSM) of the mobile communication standard, the shared resource is a time period, and the base station controller (BSC) uses two unrelated instructions to specify the timeslots required by the user during the call.
  • GSM global mobile communication system
  • BSC base station controller
  • WCDMA the shared resource is a codeword
  • RNC radio network controller
  • the main object of the present invention is to provide a resource allocation method in a communication system, which can implement the allocation of shared resources in a communication system with less signaling, thereby simplifying the resource allocation process, thereby increasing the system's stability.
  • the present invention is a resource allocation method in a communication system.
  • a control unit in the system allocates resources for communication to two communicating parties through signaling.
  • the communication is a non-interactive type, two unrelated signalings are used for each Resources for communication links of two communicating parties, when communication is interactive
  • the type is characterized in that the method includes the following steps:
  • step A allocates the current use resource for a link in the sending direction and the receiving direction of the communication link of the communicating party through a signaling according to the current use of system resources;
  • C. Determine the currently used resources of another link according to the preset correspondence between the sending direction and the receiving direction of the communication link using resources, and make both parties of the communication aware of the resources to be used for the current communication.
  • the resource is a codeword, or a time slot, or a frequency, or a combination of any two of them.
  • the control unit in the communication system is a radio resource controller.
  • the allocation determining resource is a number for identifying the resource.
  • the method further includes: presetting a correspondence relationship between the resources used by the communication link in the sending direction and the receiving direction, and storing the correspondence between the communication parties.
  • 'Step B is that the control unit allocates the currently used resources of any one communication link to the two communicating parties through the same signaling according to the current system resource usage situation;
  • Step C is that the two communication parties determine the currently used resources of the other link corresponding to the allocated link according to the corresponding relationship between the transmission direction and reception direction communication link use resources that are stored in advance.
  • Step B is that the control unit allocates a current communication resource of any one communication link to one of the two communication parties through a signal according to the current use of system resources;
  • Step C The communication party communicates according to the sending direction and receiving direction stored in advance by itself.
  • the corresponding relationship between the link resources determines the currently used resources of another link corresponding to the allocated link, and the communicating party then notifies the other communicating party of the determined sending direction and receiving direction of the currently used resources of the communication link. .
  • the method further includes: after the control unit in the communication system sets the corresponding relationship, the control unit transmits the corresponding relationship to both communication parties through a notification message.
  • the method further includes: when the control unit in the system adjusts the correspondence between the transmission direction and the reception direction communication link use resources, the control unit adjusts the adjusted relationship between the transmission direction and the reception direction communication link use resources.
  • the correspondence relationship is notified to both communication parties.
  • the method further includes: presetting and storing in a control unit a correspondence relationship between the sending direction and the receiving direction communication resource used by the communication link.
  • Step B is that the control unit allocates the currently used resources for any one communication link according to the current situation of the use of system resources;
  • Step C is that the control unit determines the currently used resource of another link corresponding to the allocated link according to the correspondence relationship between the transmission direction and the reception direction communication link usage resources that are stored in advance; the control unit then sends the determined transmission The current usage resources of the communication link in the direction and the receiving direction are notified to both communication parties through the same signaling.
  • step B when more than one unit resource is required for the communication link in the sending direction and the receiving direction, the method includes: the control unit in the system groups more than one unit resource into the sending direction and The receiver assigns the group number of a resource group to one of the communication links.
  • the present invention allocates the currently used resources for one of the communication links in the sending direction and the receiving direction through one signaling, and then determines the current of another link according to the correspondence between the resources used in the sending direction and the receiving direction communication link.
  • Use resources After both communication parties have learned the use resources of the two communication links, they can perform interactive communication.
  • This method uses only one instruction i.e. The resources used by the communication link in the sending and receiving directions can be determined, reducing the consumption of signaling resources, and making the resource allocation process relatively simple, ensuring the stability of the system.
  • FIG. 1 is a schematic diagram of an FDMA access method in the prior art.
  • FIG. 2 is a schematic diagram of a TDMA access method in the prior art.
  • FIG. 3 is a schematic diagram of a CDMA access method in the prior art.
  • FIG. 4 is a flowchart of frequency resource allocation according to the present invention.
  • FIG. 5 is a flowchart of implementing spreading codes and frequency resource allocation according to the present invention. Mode of Carrying Out the Invention
  • control unit of the communication system uses one signaling to allocate the currently used resources for one of the communication links in the transmitting direction and the receiving direction, and then determines another chain according to the correspondence between the resources used in the transmitting direction and the receiving direction communication link.
  • the current used resources of the communication channel after both parties of communication know the current used resources of the two communication links, use the used resources for interactive communication.
  • the following embodiments are for interactive communication, that is, in the following embodiments, the communicating party must complete both the sending function and the receiving function.
  • the communication is completed by means of a transmission direction link and a reception direction link.
  • resource allocation and determination are implemented by obtaining corresponding resource identification numbers.
  • Embodiment 1 In a system using a frequency as an information bearing resource, data communication between a user and a base station is taken as an example.
  • the radio resource controller is responsible for allocating the available information between the user and the base station.
  • the information resource bearing resource is the control unit of the system.
  • the information bearing resource is the frequency.
  • the link sent by the user to the base station is the uplink, and the link received by the user from the base station is the downlink. Referring to FIG. 4, the following steps are required to complete the present invention:
  • Step 401 When a user needs to communicate with a base station, the user terminal sends a service request message to the base station; after receiving the request message, the base station notifies the radio resource controller through the message, assuming that the current transmission service type in this embodiment is a voice service. Then, the radio resource controller determines that the service to be currently transmitted needs to use uplink and downlink to complete the communication according to the service type in the notification message. Therefore, the radio resource controller determines that uplink and downlink bearer resource allocations need to be performed separately. That is, the frequency is allocated.
  • Step 402 The radio resource controller allocates an uplink or downlink usable frequency number to the user terminal and the base station through two message signalings according to the current system frequency resource usage.
  • the radio terminal is allocated to the user terminal and the base station.
  • the base station's downlink frequency number is 1.
  • Step 403 The user terminal and the base station respectively obtain the uplink frequency number 1 according to the corresponding relationship between the uplink frequency number and the downlink frequency number preset on the user terminal, where the corresponding relationship in the embodiment of the present invention is the uplink frequency number. It is equal to the downstream frequency number.
  • the correspondence relationship is preset and stored in the base station and the user terminal at the same time.
  • the relationship between the preset uplink frequency and the downlink frequency may also be a correspondence relationship with other mathematical equations, such as the uplink frequency number and the downlink
  • the difference between the frequency numbers is 1, or the difference between the uplink and downlink frequency numbers is a constant; this correspondence can be notified to the base station and the user terminal through the radio resource controller.
  • Step 404 After both communication parties have obtained the frequency number used for communication, they can use the allocated frequency for information exchange to complete the communication.
  • the radio resource controller when the radio resource controller adjusts the uplink frequency or the downlink frequency to cause a frequency change, the radio resource controller notifies the base station and the user terminal of the frequency change. In this embodiment, when the radio resource controller adjusts the correspondence between the uplink frequency and the downlink frequency, the radio resource controller notifies the user terminal and the base station of the changed correspondence.
  • Embodiment 2 In a TDMA system, communication between a user and a base station is taken as an example.
  • the radio resource controller is still used to allocate communication resources to the communicating parties, the allocated resources are time periods, and time slots are used as resource allocation units.
  • the process by which the radio resource controller allocates time slots to users and base stations is the same as the above-mentioned process of assigning frequencies. The only difference is that the object allocated by the radio resource controller is changed to a time slot. In the case of changing the relationship between the time slot numbers, the rest of the process is exactly the same as the frequency allocation process.
  • Embodiment 3 In a CDMA system, communication between a user and a base station is taken as an example.
  • the radio resource controller is still used to allocate communication resources to the communicating parties, the allocated resources are code words, and the spreading code is used as a resource allocation unit.
  • the process of the radio resource controller assigning the spreading code to the user and the base station is the same as the process of assigning the frequency described above, except that the object allocated by the radio resource controller is changed to the spreading code.
  • the correspondence between the frequency numbers is here. In this case, the relationship between the spreading code numbers is changed, and the rest of the process is exactly the same as the frequency allocation process.
  • Embodiment 4 In a communication system capable of using a frequency and a spreading code at the same time, communication between a user and a base station is taken as an example.
  • the radio resource controller is still used to allocate communication resources to both parties of communication, and the allocated resources are frequency and codeword, and the frequency and The spreading code is used as a resource allocation unit. Then, the following steps are required to complete this embodiment:
  • Step 501 When the user needs to communicate with the base station, the user terminal sends the service to the base station. Service request message; after receiving the request message, the base station notifies the radio resource controller through a notification message. Assuming that the current transmission service type in this embodiment is a voice service, the radio resource controller obtains the current value based on the service type in the notification message.
  • the services to be transmitted need to use the uplink and downlink to complete the communication, so the radio resource controller determines that the uplink and downlink bearer resource allocations need to be performed separately;
  • Step 502 The radio resource controller allocates an uplink or downlink usable spreading code number to the user terminal and the base station through a message signaling according to the use of the spreading code resources of the current system.
  • the uplink uses a frequency. Resources, the downlink uses a spreading code resource, and first allocates a spreading code number to the downlink of the user terminal and the base station as 1;
  • Step 503 The user terminal and the base station respectively obtain the uplink frequency number according to the corresponding relationship between the preset frequency number and the spreading code number.
  • the preset frequency number and the spreading code number are preset.
  • the corresponding relationship between the uplink frequency number and the downlink spreading code number is equal; wherein the corresponding relationship is preset and stored in the base station and the user terminal at the same time, and the preset spreading code number and the frequency number are
  • the relationship may also be a correspondence relationship of other mathematical equations, for example, the difference between the uplink spreading code number and the downlink frequency number is 1 or the difference between the spreading code number and the frequency number is a constant; this kind of correspondence relationship can be wirelessly
  • the resource controller notifies the base station and the user terminal;
  • Step 504 Both communicating parties obtain the frequency number and the spreading code number used for communication, and the spreading code and frequency can be used for information exchange to complete the communication.
  • the uplink may use spreading code resources, and the downlink may use frequency resources, and a relationship between the uplink spreading code number and the downlink frequency number may be set in advance.
  • the radio resource controller may allocate downlink resources, and then determine uplink resources according to the corresponding relationship; it may also allocate uplink resources, and then determine downlink resources according to the corresponding relationship.
  • the radio resource controller when the radio resource controller adjusts uplink or downlink allocation resources, When the use resource is changed, the radio resource controller notifies the base station or the user terminal of the change of the allocated resource.
  • the radio resource controller when the radio resource controller adjusts the corresponding relationship between the uplink and downlink resources, the radio resource controller notifies the user terminal and the base station of the changed correspondence relationship.
  • the process is similar to the above process.
  • the resource allocation process is consistent with the allocation process of the fourth embodiment.
  • the present invention can also be applied to other communication systems, and its allocated resources can be different types according to different communication systems.
  • its allocation method is consistent with the process described in Embodiment 1.
  • its allocation method is consistent with the allocation process described in Embodiment 4.
  • each of the uplink and downlink needs to allocate multiple unit resources according to the service type, for example, a set of spreading codes is required, and several time slots are required at the same time.
  • Multiple unit resources form a group, and the corresponding relationship between the uplink and downlink resource groups is set in advance, and the resource group number is allocated to the uplink or the downlink during allocation.
  • the process of allocating uplink and downlink resources to both communication parties may also be performed in the following manner:
  • the control unit allocates corresponding resources that can be used by the uplink or downlink to the terminal of the communication party through a message signaling, and then the communication One party obtains the resource of the other link corresponding to the link of the allocated resource according to the corresponding relationship between the preset uplink resource and the corresponding downlink resource, and the communication party will obtain the obtained uplink and downlink. Of the resource is notified to the other party through the message.
  • the present invention can also save the correspondence relationship between the uplink and the downlink in the control unit.
  • the control unit first determines the uplink or downlink use resource of the communicating party in itself, and then determines another chain according to the correspondence relationship stored in itself. Way to use resources, the control unit will determine The uplink and downlink resources are notified to the communicating party by a signaling, and the communicating parties then communicate after obtaining the uplink and downlink resources through interaction.
  • the present invention uses a single signaling to allocate the currently used resources for one of the communication links in the sending direction and the receiving direction, and determines the current of another link according to the correspondence between the resources used in the sending direction and the receiving direction communication link. Use resources. After both parties of the communication are informed of the currently used resources, they can communicate using the determined resources. In this method, only a single instruction is used to complete the designation of the communication link in the sending direction and the receiving direction, which saves signaling resources, and makes the resource allocation process relatively cylindrical, thereby ensuring the stability of the system.

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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 d'affectation de ressources dans un système de communication et comprend les étapes suivantes: A pour les deux côtés de communication, après qu'une demande de communication a pu être envoyée d'un côté vers l'autre côté, une unité de commande dans le système de communication courant est informée qu'elle doit procéder à une affectation des ressources; B selon la condition des ressource du système courant, l'unité de commande décrite dans l'étape A affecte les ressources utilisées en cours par une signalisation pour une liaison des liaisons de communication de transmission et de réception du côté de communication; C selon la relation prédéterminée correspondante des ressources utilisées par les liaisons de communication dans le sens de transmission et le sens de réception, les ressources d'utilisation courantes de l'autre liaison peuvent être déterminées, et les deux côtés de communication sont informés des ressources utilisées par la communication courante. Sur la base de la relation correspondante entre les nombres de ressources des liaisons de communication définies dans le sens de transmission et le sens de réception, ledit procédé peut exécuter une affectation des ressources, économisant ainsi les ressources de signalisation, ce qui simplifie le processus d'affectation des ressources et permet d'assurer une stabilité du système.
PCT/CN2004/000103 2003-02-28 2004-02-09 Procede d'affectation de ressources dans un systeme de communication WO2004077853A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN03104913.3 2003-02-28
CNB031049133A CN1283114C (zh) 2003-02-28 2003-02-28 一种通信***中的资源分配方法

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WO2008010676A1 (fr) * 2006-07-19 2008-01-24 Samsung Electronics Co., Ltd. Procédé d'attribution rémanente efficace de ressources dans des systèmes de communication

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CN1770671B (zh) * 2004-11-05 2010-04-28 上海华为技术有限公司 Wcdma通信***中的资源管理方法及其***
US8917673B2 (en) 2006-07-14 2014-12-23 Qualcomm Incorporation Configurable downlink and uplink channels for improving transmission of data by switching duplex nominal frequency spacing according to conditions
CN101132610B (zh) * 2006-08-25 2010-05-12 华为技术有限公司 持续资源去指配实现方法、设备及包交换无线***
CN101132597B (zh) * 2006-08-25 2010-11-10 华为技术有限公司 资源分配方法、资源分配***、资源分配实体以及移动台
CN101779507B (zh) * 2007-08-17 2014-07-16 Lm爱立信电话有限公司 射频信道的编号
CN107454674B (zh) * 2017-08-25 2018-10-12 深圳市华讯方舟空间信息产业科技有限公司 卫星通信信道资源分配方法

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WO1998044755A2 (fr) * 1997-03-27 1998-10-08 Nokia Telecommunications Oy Mecanisme d'attribution de ressources dans un reseau de radiocommunication a commutation de paquets
WO1998059441A2 (fr) * 1997-06-24 1998-12-30 Nokia Mobile Phones Limited Systemes radio a mode d'acces multiple par repartition dans le temps
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KR101355771B1 (ko) 2006-07-19 2014-01-24 삼성전자주식회사 통신 시스템에서 효율적인 고정적 자원 할당 방법 및 장치

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CN1283114C (zh) 2006-11-01

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