WO2008066431A1 - Variation du décalage de puissance entre différentes voies de transmission - Google Patents

Variation du décalage de puissance entre différentes voies de transmission Download PDF

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Publication number
WO2008066431A1
WO2008066431A1 PCT/SE2006/050523 SE2006050523W WO2008066431A1 WO 2008066431 A1 WO2008066431 A1 WO 2008066431A1 SE 2006050523 W SE2006050523 W SE 2006050523W WO 2008066431 A1 WO2008066431 A1 WO 2008066431A1
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WO
WIPO (PCT)
Prior art keywords
offset
cell
channel
power
group
Prior art date
Application number
PCT/SE2006/050523
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English (en)
Inventor
Mårten ERICSON
Kjell Larsson
Hans Hannu
Peter ÖKVIST
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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.)
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Publication date
Application filed by Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to PCT/SE2006/050523 priority Critical patent/WO2008066431A1/fr
Publication of WO2008066431A1 publication Critical patent/WO2008066431A1/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
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • 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
    • H04W52/283—Power depending on the position of the mobile
    • 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
    • H04W52/286—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 during data packet transmission, e.g. high speed packet access [HSPA]
    • 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
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level

Definitions

  • the present invention relates to the field of mobile station power control and resource management in wireless networks.
  • the invention more particularly relates to a method of adjusting the power offset of at least one transmission channel in relation to another transmission channel in uplink communications between at least one first group of mobile stations including at least one mobile station and a cell in a wireless network as well as a channel offset determining device for a cell in a wireless network.
  • UEs mobile user equipment units
  • RAN radio access network
  • UEs can be mobile stations such as mobile telephones ("cellular" telephones) and laptops with mobile termination, and thus can be, for example, portable, pocket, handheld, computer-included, or car-mounted mobile devices which communicate voice and/or data with radio access network.
  • cellular mobile telephones
  • car-mounted mobile devices which communicate voice and/or data with radio access network.
  • the radio access network covers a geographical area which is divided into cell areas, with each cell area being served by a base station.
  • a cell is a geographical area where radio coverage is provided by the radio base station equipment at a base station site. Each cell is identified by a unique identity, which is broadcast in the cell.
  • the base stations communicate over the air interface (e.g., radio frequencies) with the mobile user equipment units (UE) within range of the base stations.
  • UE mobile user equipment units
  • RNC radio network controller
  • the radio network controller also sometimes termed a base station controller (BSC), supervises and coordinates various activities of the plural base stations connected thereto.
  • Radio access network is the Universal Mobile Telecommunications
  • UMTS Terrestrial Radio Access Network
  • GSM Global System for Mobile communications
  • UTRAN is essentially a radio access network providing wideband code division multiple access (WCDMA) to user equipment units (UEs).
  • WCDMA wideband code division multiple access
  • UEs user equipment units
  • 3GPP Third Generation Partnership Project
  • OLPC outer-loop power control
  • DCH Dedicated Channel
  • E-DCH Enhanced Data Channel
  • HARQ Hybrid Automatic Repeat Request
  • EUL Enhanced Uplink
  • EUL will eventually replace ordinary so-called R99 uplink solutions, at least in hot spots.
  • VoIP Voice over IP
  • CS Circuit- Switched
  • services requiring higher bit rates are/will be deployed on E- DCH instead of R99 DCHs.
  • the capacity and coverage for e.g. a VoIP solution must be equally efficient as CS speech, and higher bit rate services deployed on EUL must outperform their R99 counterparts.
  • DPCCH Dedicated Physical Control Channel
  • DPDCH Dedicated Physical Data Channel
  • E-DPCCH E-DCH Dedicated Physical Control Channel
  • E-DPDCH E-DCH Dedicated Physical Data Channel
  • E-DCH E-DCH Dedicated Physical Data Channel
  • the power consumptions of these are related to each other by power offsets, i.e. ⁇ - values. These ⁇ -values are set so that the quality for all channels is fulfilled when the targeted number of transmissions attempts is used.
  • Default E-DPDCH power offset is typically designed to give best throughput with lowest signal-to-interference ratio (SIR) for a given delay. It is typically fixed for each radio bearer and not designed for 'lowest delay' or 'best coverage', or sometimes not even 'best capacity'.
  • the present invention is therefore directed towards providing an improved and flexible determination of the offsets provided between different transmission channels, which allows a network to adapt the power offsets to various network and mobile station conditions.
  • One object of the present invention is thus to provide a method of adjusting the power offset of at least one transmission channel in relation to another transmission channel in uplink communications between at least one first group of mobile stations including at least one mobile station and a cell in a wireless network, which method allows the network to adapt the power offsets to various network and mobile station conditions.
  • This object is according to a first aspect of the present invention achieved through a method of adjusting the power offset of at least one transmission channel in relation to another transmission channel in uplink communications between at least one first group of mobile stations including at least one mobile station and a cell in a wireless network.
  • the method includes the steps: obtaining measurement data of the radio conditions of the uplinks between the mobile stations of the group and the cell and determining, based on the obtained data, whether the offset should be adjusted or not. In case the determination indicates that an adjustment should be made, the change in offset is then determined based on the obtained data followed by adjustment of the offset according to the determined change.
  • Another object of the present invention is to provide a channel offset determining device for a cell in a wireless network, which allows the network to adapt the power offsets to various network and mobile station conditions.
  • This object is according to a second aspect of the present invention achieved through a channel offset determining device for a cell in a wireless network, where at least one first group of mobile stations, including at least one mobile station, is communicating with the cell.
  • the device comprises a radio condition measurement obtaining unit configured to obtain measurement data of the radio conditions of the uplinks between the mobile stations of the group and the cell and an offset determining unit.
  • the offset determining unit is here configured to determine, based on the obtained data, whether the offset should be adjusted or not. In case the determination indicates that an adjustment should be made it furthermore determines, based on the obtained data, the change in offset and supplies a control signal indicative of the determined offset.
  • the present invention has many advantages.
  • One benefit is that it adaptively increases uplink coverage when necessary, and at the same time maintains the maximum capacity. It also provides a good throughput. It may adapt channel power offset based in the load on a cell or the location of a mobile station within the cell. Other factors that may be considered are the size of the cell and the quality of the link between cell and mobile station. It may furthermore also consider such things as E-TFC and delay. In this way an adaptation of the network is made to the changing conditions for the mobile station and/or the network.
  • fig. 1 schematically shows an access network connected to a core network as well as a mobile station connected to a cell handled by a cell handling device of the access network
  • fig. 2 shows a block schematic of a channel offset determining device according to the present invention being connected to power control functionality for a cell
  • fig. 3 shows a block schematic of a channel offset determining device according to the present invention
  • fig. 4 shows a flow chart of a number of general method steps taken according to a variation of the present invention in order to adjust the channel offsets
  • fig. 5 shows a cell, where different offsets have been provided for different distances from the base station
  • fig. 6 shows a flow chart of a number of method steps taken according to a variation of the present invention in order to adjust the offsets.
  • the present invention is directed towards providing differentiated sets of power offsets for channels between mobile stations and a base station in a cell of a wireless network, like a wide area network in the form of a WCDMA network.
  • the power offset between different transmission channels according to the state of the art is typically fixed for each radio bearer for a given amount of data that is to be transmitted within a certain time interval with the transmit power that is available (E-TFC). This means that the power offset does not consider the various network conditions of a cell or the size of the cell. This also means that it may in some instances be hard to provide good capacity, throughput and coverage.
  • the present invention solves this problem through varying the offsets.
  • the power offsets must not be set too high, i.e. not creating unnecessary high interference.
  • the power offsets should be set as high as possible. The optimal power offset values for capacity and coverage are not the same.
  • the present invention seeks to solve this through considering various radio conditions and adaptively setting a set of offsets based on these radio conditions.
  • a core network CN has a first connection-oriented service node 20, which may be a Mobile Switching Centre (MSC) that provides circuit-switched services.
  • the core network CN also includes a second General Packet Radio Service (GPRS) node 21 tailored to provide packet-switched type services, which is sometimes referred to as the serving GPRS service node (SGSN).
  • the service node 20 may be connected to circuit switched networks such as PSTN (Public Switched Telephone Network) or GSM (Global System for Mobile communication).
  • PSTN Public Switched Telephone Network
  • GSM Global System for Mobile communication
  • the node 21 may be connected to connectionless-oriented networks such as the Internet.
  • Each of the core network service nodes 20 and 21 connects to an access network AN, which is here a UMTS Terrestrial Radio Access Network (UTRAN).
  • UTRAN AN includes one or more radio network controllers (RNC), where only one RNC 18 is shown in fig. 1.
  • the RNC 18 is connected to a plurality of cells.
  • the RNC 18 is connected to a first cell handling device 10, a second cell handling device 12 and a third cell handling device 14.
  • Each of these cell handling devices 10, 12 and 14 control communication within a cell.
  • one cell handling device may handle more than one cell. In the figure only one cell 11 associated with the first cell handling device 10 is shown.
  • the cells are provided in a geographical area covered by the access network AN.
  • the cell handling devices are within these types of networks base stations.
  • one user equipment unit in the form of a mobile station 16 is shown in the cell 11 handled by the base station 10 in the access network AN and shown as communicating with this base station 10. It should be realised that normally there may be provided several mobile stations communicating with a base station.
  • Fig. 2 shows a block schematic of a channel offset determining device 23 according to the present invention being connected to the power control functionality 22 (indicated with a dashed box) for the cell shown in fig. 1.
  • the power control functionality 22 indicated with a dashed box
  • the parts of the power control functionality 22 that are relevant to the present invention are shown. It should be realised that it may include several more entities than the ones shown and to be described here.
  • One or more antennas are provided for communicating with the mobile station 16.
  • the channel offset determining device 23 according to the present invention supplies a control signal C to the power control functionality 22.
  • the channel offset determining device 23 furthermore has an input on which it receives input data in the form of measurement data RC relating to the radio conditions of the uplinks between the mobile station 16 and the cell.
  • This data is used for adjusting power offsets between various transmission channels in line with the principles of the present invention.
  • This data RC is normally obtained from the base station, which in turn may receive most of this data from the different mobile stations 16 connected to it. However some may also be received from the radio network controller of fig. 1 or the base station may gather some of it itself.
  • the outer-loop power and inner-loop control units 26 and 28 of the power control functionality 22 may be provided in the radio network controller. However, they may also be provided in the base station 10.
  • the inner-loop power control unit 28 adjusts the transmit power of the sender towards a specific link quality target at the receiver.
  • the link quality is here provided in the form of a signal-to-carrier ratio (SIR).
  • the outer-loop power control unit (OLPC) 26 adjusts the SIR target of the inner loop power control unit 28 in order to maintain a specified quality-based target.
  • One way to do this is to have the outer-loop power control for uplink channels adjust the uplink SIR-target so that a given quality target is fulfilled.
  • the quality target is the fraction of blocks that is expected to need more than targeted transmission attempts to be successfully decoded.
  • an OLPC up-step is initiated If there is a residual error that is higher than an acceptable level after the targeted number of transmission attempts have been run through, the SIR target is changed. If the transmission is not successfully decoded after for instance a TA target of three transmissions, the SIR target is increased by e.g. 0.5 dB. For every successfully decoded transmission, the corresponding SIR target is decreased by a factor inversely proportional to the error probability, e.g. about 0.01 dB if the error rate is 2%. As an alternative to OLPC it is also possible to perform some kind of suitable SIR-filtering.
  • the power control functionality 22 furthermore provides a set of power offsets ⁇ , that it applies on the different radio channels.
  • the offsets of this set are related to the power used on the DPCCH (Dedicated Physical Control Channel), which may be seen as a basic control channel.
  • the E-DPCCH and the E-DPDCH each have its own power offset.
  • the power offset for the E-DPCCH is typically the same regardless of what kind of service that is transmitted.
  • the power offset for the E-DPDCH is however different for different services.
  • One important factor that decides the power offset is the bit-rate, or more specifically the E-TFC used.
  • the power offset is also changed if the E-TFC is changed. In the present invention the power offset may be modified even if the E-TFC remains constant.
  • the set of ⁇ -offset values are varied by the device 23.
  • Fig. 3 shows a block schematic of a general structure of the channel offset determining device 23 according to the present invention. It includes a radio condition measurement obtaining unit 30 receiving measurement data RC of the radio conditions of the uplinks between the mobile stations and the cell. The measurement data can be obtained from both the mobile stations and the base station. There is also a channel offset determining unit 32, which receives the different types of data RC and determines a control signal C that indicates a change in the set of channel offsets that is to be supplied to the power control functionality for the cell.
  • the radio condition measurement obtaining unit 30 of the channel offset determining device 23 first obtains radio condition measurement data RC, step 34.
  • This data normally includes cell load measurements, which are typically uplink interference measurements for the mobile station 16. It is here possible to use also other radio condition measurements like transmission power measurements, i.e. measurements relating to transmission power used by a mobile station. This may be in the form of code power measurement data that is obtained either from the mobile station or the base station. As an alternative to code power it is also possible to obtain other types of transmission power data, for instance measurements of the power headroom, i.e. the remaining power left to use in the mobile station. Other types of data that can be measured are the application delay, used E-TFC and timing advance data. E-TFC (E-DCH Transport Format
  • Combination in essence provides a measure of a selection by a mobile station of the amount of data that is to be transmitted within a certain time interval with the transmit power that is available. It is also closely linked to the ⁇ -value of the channel.
  • the timing advance data is data that relates to the time with which a mobile station has to alter its transmission structure in order to fit into the reception structure provided by a base station. This timing advance data is indicative of the distance between the mobile station 16 and the base station 10. All the gathered data is then forwarded to the channel offset determining unit 32, which goes on and decides if the set of channel offsets ⁇ is to be adjusted or not, step 36, and if this is not the case the power control functionality for the cell is informed that no change is to be made.
  • the channel offset determining unit 32 returns and obtains new radio condition measurement data, step 34. If however the unit 32 determines that a change should be made, step 36, it then determines the change, step 38.
  • the determination of a change here involves the direction of change as well as the amount of change.
  • the amount of change may vary or it may be provided as incremental or decremental steps.
  • the cell radius may be used in determining the amount of change, where a larger cell radius may provide a bigger change in offset and a smaller cell radius may provide a smaller change in offset. If the load on a cell having a small cell radius is high, it is also possible to also provide a bigger change in offset.
  • the new set of ⁇ -offset values or possibly a deviation from the original set of ⁇ - offset values is then supplied as a signal C to the power control functionality. Thereafter the power control functionality may adapt the set of ⁇ -offset values with the change provided by the control signal C, and thus change the set of power offsets PO according to the determination, step 40.
  • the determination of change may, apart from the above mentioned factors also be based on the transmission power per bit.
  • the transmission power per bit may be obtained through the E-TFC and used transmission power. It is also possible to obtain it from knowledge about the service requirements of the service provided to the mobile station together with the used transmission power.
  • the offsets are increased if the load on the cell is low, while the communication between mobile station and base station has quality problems, while a decrease may be contemplated if the load on the cell is high.
  • the uplink interference When the uplink interference is high, the cell/system is interference-limited, i.e. cells are small, and the power offsets should be optimized for capacity. When the uplink interference is low, the power offsets can be increased if necessary, e.g. if some mobile stations use very high code power i.e. UE transmission power.
  • the adaptive power offset solution is thought be a slow process, with processing time of several seconds or more.
  • the procedure described above is applied before communication is started with a mobile station. However it may also be performed during communication, in which case the offsets are changed according to the way described in 3GPP TS 25.433 V6.10.0 "UTRAN lub interface Node B Application Part (NBAP) signalling", which is herein incorporated by reference.
  • the power offset of E-DPDCH cannot be set too high, since then the DPCCH will be "suppressed” by the high power for the data channel.
  • the DPCCH carries the pilot bits for channel estimation. When DPCCH is suppressed the quality of the bits gets worse due to worse channel estimations.
  • Such offset changes may be determined as a total value for all mobile devices of the cell. However, it is also possible to determine on a mobile station to mobile station basis, i.e. independently for each mobile station communicating with the cell. Preferably, only the mobile stations using high code power, which indicates a coverage problem, should get their power offsets changed since this minimizes the interference.
  • FIG. 5 schematically shows the cell 11 with the base station 10.
  • the cell 11 has here been divided into different regions R1 , R2 and R3.
  • an innermost region R1 that is shown as encircling or covering the base station 10 is associated with a first set of channel offsets
  • an intermediate region R2 encircling or covering the inner region R1 is associated with a second set of channel offsets
  • an outer region R3 encircling or covering the intermediate region R2 is associated with a third set of channel offsets.
  • the regions are associated with the distances from the base station 10 up to the edge of the cell 11.
  • the innermost region R1 covers distances closest to the base station up to a first distance threshold
  • the second region R2 covers intermediate distances that are between the first distance threshold and a second higher distance threshold
  • the third region covers distances from the second distance threshold to a third even higher distance threshold.
  • the third distance threshold also makes up the edge of the cell. It should here be realised that more or fewer regions and thresholds may be provided.
  • the regions are associated with different sets of power offsets, where the set of power offsets of the inner region R1 is lower than the set of power offsets of the intermediate region R2, which in turn is lower than the set of power offsets of the outer region R3.
  • Mobile stations will here be assigned offset sets to be applied on the transmission channels according to the region they are perceived as being located in by the system.
  • the location of the mobile stations may here be determined based on code power or other related power measurement values like power headroom or be based on a timing advance value obtained from the mobile station.
  • the distance can also be obtained in other ways, for instance through obtaining position data associated with positioning units in the mobile stations, like GPS units, or through triangulation via a number of base stations.
  • the set of offsets are here changed when the mobile station moves towards or away from the base station 10.
  • this method may be applied singly or jointly for all of mobile stations communicating with the cell. In the description below focus will however be on a single mobile station.
  • the radio condition measurement obtaining unit 30 of the channel offset determining device 23 first obtains radio condition measurements RC in the form of load measurements, step 42, which are normally measurements on the uplink interference. These are then compared by the channel offset determining unit 32, with a first load threshold T1. If the interference is below this threshold T1 , step 44, which indicates that the interference is low, the channel offset determining unit 32 then obtains further radio condition measurements from the radio condition measurement obtaining unit 30, step 46. These measurements include measurements relating to code power CP, the signal to carrier interference (SIR) target and the path gain. The transmission attempt determining unit 32 then compares these measurements with certain criteria indicative of acceptable radio conditions.
  • SIR signal to carrier interference
  • step 48 for the cases of a high code power, inability to meet SIR or a bad path gain, an increase in the set of power offsets PO is made, step 50. If the criteria are fulfilled, step 48, there is no change in the set of power offsets, step 58.
  • step 44 If the load was not below the first load threshold, step 44, it is compared with a second load threshold T2, which indicates a high load. If the load on the cell is not above this second threshold, step 52, then the set of power offsets is kept unchanged, step 58. If however, the load is above the threshold T2, step 52, there is an investigation being made if there was a previous increase in the set of channel offsets for the mobile station. In case there has been no such change, step 54, then the set of power offsets PO is kept unchanged, step 58. If however there was such a previous increase, step 54, then a decrease in the set of power offsets is performed, step 56. As an alternative it may be possible to also decrease the power offset also when there has not been a previous increase.
  • the present invention has many advantages.
  • the main benefit of the proposed invention is that it adaptively increases uplink coverage when necessary, and at the same time maintains the maximum capacity. It also provides a good throughput. It adapts the channel offsets based on the load on a cell or the location of the mobile station within the cell. Other factors that may be considered are the size of the cell and the quality of the link between cell and mobile station. It may furthermore also consider such things as E-TFC and delay. In this way an adaptation of the system is made to the changing conditions for the mobile station and/or the network. It therefore increases user throughput by adopting a low power offset for a user close to a base station, it increases system capacity and stability when users are far away from the base station.
  • the channel offset determining device can be implemented through one or more processors together with computer program code for performing the functions of the invention.
  • the program code mentioned above may also be provided as a computer program product, for instance in the form of a data carrier carrying computer program code for performing the method according to the present invention when being loaded into a computer.
  • the channel offset determining device may furthermore be provided as a separate device or as a part of another entity in the network, such as a part of a communication control device, like a base station or a radio network controller.
  • the control signal mentioned above may furthermore be supplied to any power control unit where the transmission power of mobile stations is controlled.

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

Abstract

L'invention concerne un procédé et un dispositif de détermination de décalage entre les voies, permettant de régler le décalage de puissance (PO) relatif entre au moins une voie de transmission et une autre voie de transmission lors d'une communication en liaison montante entre une station mobile et une cellule dans un réseau sans fil. Les étapes de ce procédé consistent à obtenir des données de mesure des conditions radio (RC) des liaisons montantes pour la station mobile, et à déterminer (36), à partir de ces données, si le décalage doit être réglé ou non. Si un réglage doit être effectuée (36), la modification du décalage (38) est déterminé à partir des données obtenues, puis le décalage est réglé conformément à la modification déterminée (40).
PCT/SE2006/050523 2006-11-29 2006-11-29 Variation du décalage de puissance entre différentes voies de transmission WO2008066431A1 (fr)

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EP2282566A3 (fr) * 2009-08-07 2014-07-09 Vodafone Group PLC Sélection dynamique d'une plage de cellules de station de base
WO2019114538A1 (fr) * 2017-12-12 2019-06-20 Huawei Technologies Co., Ltd. Système et procédé de gestion de topologie de réseau

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RU2508612C1 (ru) * 2009-12-02 2014-02-27 Хуавэй Текнолоджиз Ко., Лтд. Способ и устройство для установки сдвига мощности канала и базовая станция
CN103229577A (zh) * 2012-12-31 2013-07-31 华为技术有限公司 一种信道资源配置方法、装置、基站及用户设备
EP2765800A1 (fr) * 2012-12-31 2014-08-13 Huawei Technologies Co., Ltd. Procédé d'allocation de ressources de canal, dispositif, station de base et équipement d'utilisateur
EP2765800A4 (fr) * 2012-12-31 2014-12-03 Huawei Tech Co Ltd Procédé d'allocation de ressources de canal, dispositif, station de base et équipement d'utilisateur
CN103229577B (zh) * 2012-12-31 2016-09-28 华为技术有限公司 一种信道资源配置方法、装置、基站及用户设备
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WO2019114538A1 (fr) * 2017-12-12 2019-06-20 Huawei Technologies Co., Ltd. Système et procédé de gestion de topologie de réseau
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