WO2015165080A1 - 一种调整随机接入功率控制参数的装置及方法 - Google Patents

一种调整随机接入功率控制参数的装置及方法 Download PDF

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Publication number
WO2015165080A1
WO2015165080A1 PCT/CN2014/076607 CN2014076607W WO2015165080A1 WO 2015165080 A1 WO2015165080 A1 WO 2015165080A1 CN 2014076607 W CN2014076607 W CN 2014076607W WO 2015165080 A1 WO2015165080 A1 WO 2015165080A1
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WIPO (PCT)
Prior art keywords
random access
preamble
probability
power
contention conflict
Prior art date
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PCT/CN2014/076607
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English (en)
French (fr)
Inventor
陈宝军
徐立
冯忻
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP14890733.0A priority Critical patent/EP3116282B1/en
Priority to CN201480000550.1A priority patent/CN105379398B/zh
Priority to PCT/CN2014/076607 priority patent/WO2015165080A1/zh
Publication of WO2015165080A1 publication Critical patent/WO2015165080A1/zh
Priority to US15/337,569 priority patent/US10075983B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • H04W74/0841Random access procedures, e.g. with 4-step access with collision treatment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/362Aspects of the step size
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • H04W74/004Transmission of channel access control information in the uplink, i.e. towards network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems

Definitions

  • the present invention relates to the field of communications, and in particular, to an apparatus and method for adjusting random access power control parameters. Background technique
  • a user equipment transmits a preamble to a base station through a random access procedure, and after receiving a preamble response message that the base station feeds back to the UE, the UE accesses the base station.
  • LTE Long Term Evolution
  • the UE needs to send a random access preamble to the base station with a certain transmit power.
  • the process of determining the transmit power of the preamble by the UE mainly includes the following two steps:
  • Step 1 The base station determines a control parameter for the UE to transmit the transmit power of the random preamble.
  • the base station determines a control parameter (hereinafter referred to as a random access power control parameter) for the UE to transmit the transmit power of the random preamble, and the control parameter includes a preamble Initial Received Target Power and a power ramp step (ower Ramping Step) )Wait.
  • the base station can use the system default control parameters or manually set the control parameters.
  • the base station sends the determined random access power control parameter to the UE through a System Information Block (SIB) message.
  • SIB System Information Block
  • Step 2 The UE determines the transmit power of the random access preamble according to the random access power control parameter sent by the base station.
  • the UE After obtaining the random access power control parameter by using the SIB message, the UE calculates the transmit power of the random access preamble according to the control parameter:
  • P PRACH MIN ⁇ P CMAX , PREAMBLE — RECEIVED — TARGET — POWER + PL ⁇
  • PpRAQi indicates the UE's random access preamble transmit power
  • PRACH indicates the physical random access channel (Physical Random Access Channel); ⁇ ⁇ indicates that the UE is in the serving cell Maximum transmit power at random access;
  • PREAMBLE-RECEIVED—TARGET— POWER indicates the received power of the preamble
  • PL is the path loss (Path Loss)
  • P RS represents the transmit power of the reference signal, RSRP Receive power for reference signal; receive power of the preamble
  • the preamble Initial Received Target Power indicates the initial expected expected received power
  • PREAMBLE_TRANSMISSION_COUNTER indicates the number of preamble transmissions during random access
  • power Ramping Ste indicates the power climb step
  • DELTA- PREAMBLE indicates different preamble formats. Transmit power offset, which is defined as shown in Table 1 below.
  • Embodiments of the present invention provide an apparatus and method for adjusting random access power control parameters, The power control parameters are adaptively adjusted, and then the delay in the UE random access process is controlled within a desired range.
  • an embodiment of the present invention provides an apparatus for adjusting a random access power control parameter, including:
  • the random access information acquiring unit is configured to acquire the random access information reported by the multiple user equipment UEs, where the random access information includes a preamble sending number and a competition conflict indication;
  • a random access information statistics unit configured to collect random access information indicating that the competition conflict is a non-contending conflict
  • a random access probability determining unit configured to determine a first random access probability according to the random access information indicating the non-contending conflict according to the competition conflict indication, where the first random access probability indicates a random access with a preamble transmission number of Probability
  • a control parameter adjustment unit configured to adjust the first random access power control parameter according to the first random access probability, where the first random access power control parameter is a preamble initial expected received power.
  • the random access information statistics unit is specifically configured to:
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the number of random access times with the number of preamble transmissions is 1;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times is obtained;
  • the random access probability determining unit is specifically configured to:
  • the quotient of the sum of the number of random accesses with the number of preamble transmissions and the number of random accesses is taken as the first random access probability.
  • control parameter adjustment unit is specifically configured to:
  • the first random access probability ⁇ the number of preamble transmissions is 1 the minimum probability of successful random access
  • the current preamble initial expected reception power ⁇ the first adjustment before the initial adjustment of the initial expected received power + the leading initial expected received power
  • Maximum number of times *Adjusted preamble initial expected received power current preamble initial expected received power + preamble initial expected received power adjustment step size when the initial step of the initial expected received power is adjusted.
  • the random access probability determining unit is further configured to The contention conflict indicates that the second random access probability is determined for the random access information of the non-contending conflict, and the second random access probability indicates the probability that the random access with the number of preamble retransmissions is 1 in all retransmitted random accesses;
  • the control parameter adjustment unit is further configured to adjust the second random access power control parameter according to the second random access probability, where the second random access power control parameter is a power climbing step.
  • the random access information statistics unit is specifically configured to:
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the number of random access times with a preamble retransmission number of 1 is obtained;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times of all retransmissions is obtained;
  • the random access probability determining unit is specifically configured to:
  • the quotient of the sum of the number of random accesses with the number of preamble retransmissions of 1 and the number of random accesses of all retransmissions is taken as the second random access probability.
  • control parameter adjustment unit is specifically configured to:
  • the adjusted power ramp step current power ramp step - 2 ;
  • the random access probability determining unit is further configured to The contention adjustment unit is configured to determine a preamble retransmission random access delay for the non-contending collision random access information, and the control parameter adjustment unit is further configured to adjust the second random access power control parameter according to the preamble retransmission random access delay
  • the second random access power control parameter is a power climbing step.
  • the seventh possible first aspect of the first aspect is 3 ⁇ 43 ⁇ 43 ⁇ 4 ⁇ 4 ⁇
  • the preamble retransmission random access delay is ⁇ ⁇ ⁇ ⁇ ( ⁇ ) ⁇ ( ⁇ - ⁇ )), where ⁇ (1) represents the first random access probability, and AP (i) represents the number of preamble transmissions.
  • the random access probability of i where 0 is the random access delay with the number of preamble transmissions being i.
  • control parameter adjustment unit is specifically configured to:
  • the random access information acquiring unit is specifically configured to: The multiple UEs send a request message for obtaining random access information; and receive random access information reported by multiple UEs.
  • an embodiment of the present invention provides an apparatus for adjusting a random access power control parameter, including:
  • a transceiver configured to acquire random access information reported by multiple user equipment UEs, where The incoming information includes the number of preamble transmissions and the indication of the competition conflict;
  • a memory configured to store random access information reported by multiple UEs
  • a processor configured to calculate random access information indicating that the conflict of conflict is not a non-contending conflict; determining, according to the conflicting conflict indication, a first random access probability for the non-contending conflicting random access information, where the first random access The entry probability indicates a random access probability that the number of preamble transmissions is 1. According to the first random access probability, the first random access power control parameter is adjusted, and the first random access power control parameter is a preamble initial expected received power.
  • the processor when the processor indicates that the contention conflict indicates the random access information that is not a contention conflict, the processor is specifically configured to:
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the number of random access times with the number of preamble transmissions is 1;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times is obtained;
  • the processor is specifically configured to: when determining the first random access probability according to the random access information indicated as the non-contending conflict according to the competition conflict:
  • the quotient of the sum of the number of random accesses with the number of preamble transmissions and the number of random accesses is taken as the first random access probability.
  • the processor adjusts the first random access power control according to the first random access probability
  • the parameters specifically:
  • the first random access probability ⁇ the number of preamble transmissions is 1 the minimum probability of successful random access
  • the current preamble initial expected reception power ⁇ preamble initial expected reception power before the first adjustment + preamble
  • the maximum number of unidirectional adjustments of the expected expected received power * the adjusted initial stepped expected received power the current preamble initial expected received power + the adjusted initial expected received power of the leading initial expected received power.
  • the processor is further configured to:
  • the non-contending collision random access information determines a second random access probability, and the second random access probability indicates a probability that the preamble retransmission number is 1 random access in all retransmitted random access; according to the second random The access probability is adjusted, and the second random access power control parameter is adjusted, and the second random access power control parameter is a power climbing step.
  • the processor is specifically used to: when the statistical competition conflict indication is random access information of the non-contending conflict, :
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the number of random access times with a preamble retransmission number of 1 is obtained;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times of all retransmissions is obtained;
  • the processor is specifically configured to: when determining the second random access probability according to the random access information indicated as the non-contending conflict according to the competition conflict:
  • the quotient of the sum of the number of random accesses with the number of preamble retransmissions of 1 and the number of random accesses of all retransmissions is taken as the second random access probability.
  • the processor adjusts the second random access power control according to the second random access probability
  • the parameters specifically:
  • the adjusted power ramp step current power ramp step - 2 Or,
  • the processor is further configured to: The non-contending collision random access information determines the preamble retransmission random access delay; according to the preamble retransmission random access delay, the second random access power control parameter is adjusted, and the second random access power control parameter is power climbing Step size.
  • the seventh possible real aspect of the second aspect is 3 ⁇ 43 ⁇ 43 ⁇ 4 ⁇ 4 ⁇
  • the preamble retransmission random access delay is ⁇ ⁇ ⁇ ⁇ ( ⁇ ) ⁇ ( ⁇ - ⁇ )), where ⁇ (1) represents the first random access probability, and AP (i) represents the number of preamble transmissions.
  • the random access probability of i where 0 is the random access delay with the number of preamble transmissions being i.
  • the processor is configured to retransmit the random access delay according to the preamble, and adjust the second random access
  • the transceiver is specifically used to:
  • an embodiment of the present invention provides a method for adjusting a random access power control parameter, including:
  • the base station acquires the random access information reported by the multiple user equipments, where the random access information includes a preamble transmission number and a competition conflict indication;
  • the base station statistical competition conflict indication is random access information of non-contending conflicts; Determining, by the base station, the first random access probability according to the random access information indicating the non-contending conflict, wherein the first random access probability indicates a random access probability that the number of preamble transmissions is 1, and the base station according to the first random access Into the probability, the first random access power control parameter is adjusted, and the first random access power control parameter is a preamble initial expected received power.
  • the base station statistics the contention conflict indication as random access information of the non-contending conflict including:
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the number of random access times with the number of preamble transmissions is 1;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times is obtained;
  • the base station determines the first random access probability according to the random access information indicating the non-contending conflict according to the competition conflict indication, including:
  • the quotient of the sum of the number of random accesses with the number of preamble transmissions and the number of random accesses is taken as the first random access probability.
  • the base station adjusts the first random access power control parameter according to the first random access probability, Includes:
  • the method further includes:
  • the base station determines a second random access probability according to the random access information indicating the non-contending conflict according to the competition conflict indication, and the second random access probability indicates that the random access with the number of preamble retransmissions is 1 in all retransmitted random accesses.
  • the probability ;
  • the base station adjusts the second random access power control parameter according to the second random access probability, and the second random access power control parameter is a power climbing step.
  • the base station statistics the contention conflict indication as random access information of the non-contending conflict, including: statistical competition conflict The random access information indicating the non-contending conflict is obtained, and the number of random access times with the number of preamble retransmissions is 1;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times of all retransmissions is obtained;
  • the base station determines the second random access probability according to the random access information indicating the non-contending conflict according to the competition conflict indication, including:
  • the quotient of the sum of the number of random accesses with the number of preamble retransmissions of 1 and the number of random accesses of all retransmissions is taken as the second random access probability.
  • the base station adjusts the second random access power control parameter according to the second random access probability, Includes:
  • the adjusted power ramp step current power ramp step - 2 Or,
  • the adjusted power climbing step size the current power climbing step size +2 .
  • the method further includes: Determining, by the base station, a preamble retransmission random access delay according to the contention conflict indication for the random access information of the non-contending collision;
  • the base station adjusts the second random access power control parameter according to the preamble retransmission random access delay, and the second random access power control parameter is the power climbing step.
  • the seventh possible real aspect of the third aspect is 3 ⁇ 43 ⁇ 43 ⁇ 4 ⁇ 4 ⁇
  • the preamble retransmission random access delay is ⁇ ⁇ ⁇ ⁇ ( ⁇ ) ⁇ ( ⁇ - ⁇ )), where ⁇ (1) represents the first random access probability, and AP (i) represents the number of preamble transmissions.
  • the random access probability of i where 0 is the random access delay with the number of preamble transmissions being i.
  • the base station adjusts the second random access power control according to the preamble retransmission random access delay Parameters, including:
  • the base station acquires the random access reported by the multiple user equipment UEs Information, including:
  • the base station sends a request message for acquiring random access information to multiple UEs
  • the base station receives the random access information reported by multiple UEs.
  • the base station acquires random access information reported by multiple user equipments, where the random access information includes a preamble transmission number and a competition conflict indication; and the base station statistical competition conflict indication is a non-contending collision random connection.
  • the base station determines a first random access probability according to the contention conflict indication for the random access information of the non-contending conflict, wherein the first random access probability indicates a random access probability that the number of preamble transmissions is 1; a random access probability, adjusting a first random access power control parameter, where the first random access power control parameter is a preamble initial expected received power; The adaptively adjusting the random access power control parameter, so that the UE can calculate the transmit power of the random access preamble according to the adjusted random access power control parameter, and then control the delay in the random access process of the UE within a desired range.
  • 1 is a schematic diagram of an architecture of an LTE communication system
  • FIG. 2 is a schematic structural diagram of an apparatus for adjusting random access power control parameters according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for adjusting random access power control parameters according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a method for adjusting a random access power control parameter according to an embodiment of the present disclosure
  • FIG. 5 is a schematic flowchart of a method for reporting, by a base station, a random access information indicating that a competition conflict is a non-contending conflict according to an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart of a method for adjusting a random access power control parameter according to an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart of a method for adjusting random access power control parameters according to an embodiment of the present disclosure
  • FIG. 8 is a schematic flowchart of a method for reporting, by a base station, a random access information indicating that a competition conflict is indicated as a non-contending conflict according to an embodiment of the present disclosure
  • FIG. 9 is a schematic flowchart of a method for adjusting random access power control parameters according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic flowchart of a method for adjusting a random access power control parameter according to an embodiment of the present disclosure
  • FIG. 11 is a schematic flowchart of a method for reporting, by a base station, a random access information indicating that a competition conflict is not a non-contending conflict according to an embodiment of the present invention
  • FIG. 12 is a schematic flowchart of a method for adjusting random access power control parameters according to an embodiment of the present invention. detailed description
  • the embodiments of the present invention provide an apparatus and method for adjusting random access power control parameters, which can adaptively adjust power control parameters, and then control the delay in the UE random access process within a desired range.
  • the embodiments of the present invention are applicable to a Long Term Evolution (LTE) communication system.
  • LTE Long Term Evolution
  • the wireless communication network 100 includes a plurality of base stations 110 and other network entities for supporting a number of user equipments (UEs) 120 to communicate.
  • UEs user equipments
  • the base station 110 may be an evolved NodeB (eNB) in LTE.
  • eNB evolved NodeB
  • One base station 110 may support or manage one or more cells.
  • the UE 120 When the UE 120 needs to communicate with the network, the UE 120 will select one of the base stations 110 to initiate access.
  • the UE 120 may also be referred to as a Mobile Terminal (MT), a Mobile Station (MS), etc., and may communicate with one or more core networks through a Radio Access Network (RAN).
  • MT Mobile Terminal
  • MS Mobile Station
  • RAN Radio Access Network
  • the core network device 130 is connected to one or more base stations 110, which are comprised of Mobility Management Entities (MMEs) and/or other network entities.
  • MMEs Mobility Management Entities
  • an embodiment of the present invention provides a device for adjusting a random access power control parameter, including:
  • the random access information acquiring unit 21 is configured to acquire random access information reported by the multiple user equipment UEs, where the random access information includes a preamble sending number and a competition conflict indication;
  • the random access information statistic unit 22 is configured to collect random access information indicating that the competition conflict is a non-contending conflict
  • the random access probability determining unit 23 is configured to determine a first random access probability according to the random access information indicating that the conflicting conflict indication is a non-contending conflict, where the first random access probability indicates a preamble sending time a random access probability of number 1;
  • the control parameter adjustment unit 24 is configured to adjust the first random access power control parameter according to the first random access probability, where the first random access power control parameter is a preamble initial expected received power.
  • the random access information statistics unit 22 is specifically configured to:
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the number of random access times with the number of preamble transmissions is 1;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times is obtained;
  • the random access probability determining unit 23 is specifically configured to:
  • the quotient of the sum of the number of random accesses with the number of preamble transmissions and the number of random accesses is taken as the first random access probability.
  • control parameter adjustment unit 24 is specifically configured to:
  • the first random access probability ⁇ the number of preamble transmissions is 1 the minimum probability of successful random access
  • the current preamble initial expected reception power ⁇ the first adjustment before the initial adjustment of the initial expected received power + the leading initial expected received power
  • Maximum number of times *Adjusted preamble initial expected received power current preamble initial expected received power + preamble initial expected received power adjustment step size when the initial step of the initial expected received power is adjusted.
  • the random access probability determining unit 23 is further configured to determine a second random access probability according to the random access information indicating the non-contending conflict according to the competition conflict indication, where the second random access probability indicates that the number of preamble retransmissions is The probability of random access of 1 in all retransmitted random accesses;
  • the control parameter adjustment unit 24 is further configured to adjust the second random access power control parameter according to the second random access probability, where the second random access power control parameter is a power climbing step.
  • the random access information statistics unit 22 is specifically configured to: collect random access information indicating that the competition conflict is indicated as a non-contending conflict, and obtain a random access number with a preamble retransmission number of 1; statistical competition conflict indication For the random access information of the non-conflicting conflict, the sum of the random access times of all retransmissions is obtained; the random access probability determining unit 23 is specifically configured to: the number of random access times with the number of preamble retransmissions being 1 and all the weights The quotient of the sum of the number of random accesses transmitted is taken as the second random access probability.
  • control parameter adjustment unit 24 is specifically configured to:
  • the adjusted power ramp step current power ramp step - 2 Or,
  • the random access probability determining unit 23 is further configured to determine a preamble retransmission random access delay according to the random access information indicating the non-contention conflict according to the competition conflict indication;
  • the control parameter adjustment unit 24 is further configured to adjust the second random access power control parameter according to the preamble retransmission random access delay, where the second random access power control parameter is a power climbing step.
  • the preamble retransmission random access delay is ⁇ y y(i_AP(ij) , where ⁇ ( ⁇ ) represents the first random access probability, and AP(i) represents the random access with the preamble transmission number i Probability, k (P> indicates the random access delay with the number of preamble transmissions being i.
  • the random access information acquiring unit 21 is specifically configured to:
  • the adaptively adjusting the random access power control parameter may be implemented, so that the UE may calculate the transmit power of the random access preamble according to the adjusted random access power control parameter, and delay the UE in the random access process. Control is within the desired range.
  • an embodiment of the present invention provides a device for adjusting a random access power control parameter, including:
  • the transceiver 31 is configured to acquire random access information reported by multiple user equipment UEs, where the random access information includes a preamble transmission number and a competition conflict indication;
  • the memory 32 is configured to store random access information reported by multiple UEs
  • the processor 33 is configured to: determine, according to the contention conflict, the random access information that is not a non-contending conflict; and determine, according to the conflicting conflict indication, the first random access probability, where the first random access probability is The access probability indicates a random access probability that the number of preamble transmissions is 1. According to the first random access probability, the first random access power control parameter is adjusted, and the first random access power control parameter is a preamble initial expected received power.
  • the processor 32 when the processor 32 counts the random access information indicating that the contention conflict is a non-contending conflict, the processor 32 is specifically configured to:
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the number of random access times with the number of preamble transmissions is 1;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times is obtained;
  • the processor 32 is specifically configured to: when determining the first random access probability according to the random access information indicated as the non-contending conflict according to the competition conflict:
  • the quotient of the sum of the number of random accesses with the number of preamble transmissions and the number of random accesses is taken as the first random access probability.
  • the processor 32 adjusts the first random access power control parameter according to the first random access probability, the processor 32 is specifically configured to:
  • the first random access probability ⁇ the number of preamble transmissions is 1 the minimum probability of successful random access
  • the current preamble initial expected reception power ⁇ the first adjustment before the initial adjustment of the initial expected received power + the leading initial expected received power
  • Maximum number of times *Adjusted preamble initial expected received power current preamble initial expected received power + preamble initial expected received power adjustment step size when the initial step of the initial expected received power is adjusted.
  • the processor 32 is further configured to determine, according to the contention conflict indication, a second random access probability for the non-contending collision random access information, where the second random access probability indicates that the preamble retransmission number is 1 random access.
  • the probability of random access in all retransmissions; adjusting the second random access power control parameter according to the second random access probability, and the second random access power control parameter is a power climbing step.
  • the processor 32 when the processor 32 counts the random access information indicating that the conflict of conflict indicates non-contending conflict, the processor 32 is specifically configured to:
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the number of random access times with a preamble retransmission number of 1 is obtained;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times of all retransmissions is obtained;
  • the processor 32 is specifically configured to: when determining the second random access probability according to the random access information indicated as the non-contending conflict according to the competition conflict:
  • the quotient of the sum of the number of random accesses with the number of preamble retransmissions of 1 and the number of random accesses of all retransmissions is taken as the second random access probability.
  • the processor 32 adjusts the second random access power control according to the second random access probability.
  • the parameters are specifically used to:
  • the adjusted power ramp step current power ramp step - 2 Or,
  • the processor 32 is further configured to determine a preamble retransmission random access delay according to the contention conflict indication for the non-contention conflict random access information; adjust the second random connection according to the preamble retransmission random access delay
  • the power control parameter, the second random access power control parameter is a power climb step.
  • the preamble retransmission random access delay is ⁇ y y(i_AP(ij) , where ⁇ ( ⁇ ) represents the first random access probability, and AP(i) represents the random access with the preamble transmission number i Probability, k (P> indicates the random access delay with the number of preamble transmissions being i.
  • the transceiver 31 is specifically configured to:
  • Receiving, the random access information reported by the multiple UEs, by using the transceiver, the memory, and the processor in the second embodiment, can adaptively adjust the random access power control parameters, so that the UE can perform the adjusted random access according to the
  • the power control parameter calculates the transmit power of the random access preamble, and controls the delay in the random access process of the UE within a desired range.
  • an embodiment of the present invention provides a method for adjusting a random access power control parameter, where the method includes:
  • the base station acquires random access information reported by the multiple user equipments, where the random access information includes a preamble transmission number and a competition conflict indication.
  • the method for the base station to acquire the random access information reported by the multiple user equipments is: the base station sends a request message for acquiring the random access information to the multiple UEs;
  • the base station receives random access information reported by multiple UEs.
  • the UE in the multiple UEs refers to any UE that performs random access and supports reporting of random access channel information.
  • the competition conflict refers to that multiple UEs in one cell are in the same physical random access channel (Physical). Collision conflicts generated when the same preamble is used to initiate random access on the random access channel, PRACH); whether the UE supports the reporting of the random access channel information, may pass the cell in the UE capability information (IE UE-EUTRA-Capability)
  • the self-optimization related parameters (son-Parameters-r9) in the r9 protocol version are indicated.
  • the base station statistics the contention conflict indication as random access information of non-contending conflicts
  • the method for the base station to calculate the random access information indicating that the contention conflict is not a non-contending conflict includes:
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the number of random access times with the number of preamble transmissions is 1;
  • the statistical competition conflict is indicated as random access information of non-contending conflicts, and the sum of random access times is obtained.
  • the method for the base station to collect the random access information indicating that the contention conflict is a non-contending conflict in step S402 includes:
  • the base station determines, according to the random access information reported by the multiple UEs, the random access information reported by each UE.
  • steps S502 to S506 are required;
  • step S503 If yes, go to step S503; otherwise, go to step S506; S503. Add 1 to the total number of random access times;
  • step S505 If yes, go to step S505; otherwise, go to step S506;
  • the competition conflict indication is non-contending conflict, that is, the UE's competition conflict resolution is successful; the initial value of the sum of the random access times and the random access times with the number of preamble transmissions is 0.
  • the threshold is preset by the base station.
  • the threshold may be set to 1000.
  • step S507 If yes, go to step S507; otherwise, go to step S508;
  • Stop acquiring the random access information reported by the UE determine the sum of the number of random access times and the number of random access times when the number of preamble transmissions is 1 at this time, and then, the number of random access times with the number of preamble transmissions being 1 and random. The sum of the access times is cleared;
  • the base station continues to determine random access information reported by the next UE.
  • steps S502 to S506 are performed until the sum of the random access times is greater than or equal to the preset threshold, and the number of random access times and the number of random access times of the number of preamble transmissions at this time are determined to be 1 and random. The sum of the number of entries.
  • the base station determines, according to the contention conflict indication, the first random access probability of the non-contending collision, wherein the first random access probability indicates a random access probability that the number of preamble transmissions is 1.
  • the method for determining, by the base station, the first random access probability according to the contention conflict indication for the non-contention conflict random access information includes:
  • the base station adjusts the first random access power control parameter according to the first random access probability, where the first random access power control parameter is a preamble initial expected received power.
  • the base station adjusts the first random access according to the first random access probability.
  • Methods of power control parameters include:
  • Condition 1 is the maximum probability of successful random access with the first random access probability > preamble transmission number being 1, and the current preamble initial expected received power > preamble initial expected received power before first adjustment - preamble initial expected received power Maximum number of unidirectional adjustments * adjustment step size of the initial expected received power of the preamble;
  • step S602 is performed; otherwise, step S603 is performed;
  • Adjusted preamble initial expected received power current preamble initial expected received power - an adjustment step of a preamble initial expected received power
  • Condition 2 is the minimum probability of successful random access with the first random access probability ⁇ preamble transmission number being 1, and the current preamble initial expected received power ⁇ preamble initial expected received power before first adjustment + preamble initial expected received power Maximum number of unidirectional adjustments * adjustment step size of the initial expected received power of the preamble;
  • step S604 is performed
  • Adjusted preamble initial expected received power current preamble initial expected received power + adjusted initial step forward expected received power.
  • the base station sends a system message block SIB message carrying the adjusted initial initial expected received power to the UE, so that the UE receives the initial expected according to the adjusted preamble.
  • Power calculate the transmit power of the random access preamble, and perform subsequent procedures such as sending the preamble.
  • the base station can adaptively adjust the random access power control parameter (preamble initial expected received power), so that the UE can calculate the transmit power of the random access preamble according to the adjusted random access power control parameter, and The delay control in the random access process is within the expected range.
  • the random access power control parameter preamble initial expected received power
  • an embodiment of the present invention provides a method for adjusting a random access power control parameter, where the method includes:
  • the base station acquires random access information reported by the UE by the multiple user equipments, where the random access information includes a preamble transmission number and a competition conflict indication.
  • the method for the base station to acquire the random access information reported by the multiple user equipments is: the base station sends a request message for acquiring the random access information to the multiple UEs;
  • the base station receives random access information reported by multiple UEs.
  • the UE in multiple UEs refers to any UE that completes random access and supports random access channel information.
  • the base station statistics the contention conflict indication as random access information of the non-contending conflict
  • the method for the base station to calculate the random access information indicating that the contention conflict is not a non-contending conflict includes:
  • the base station collects the random access information indicating the conflict of the competition as the non-contending conflict, and obtains the number of random access times with the number of preamble transmissions, the sum of the random access times, the number of random access times with the number of preamble retransmissions of 1, and all The sum of the number of random accesses retransmitted.
  • step S702 the method for detecting the sum of the number of random access times and the number of random access times of the preamble transmission number being 1 and the method shown in FIG. 5 in the random access information indicating that the contention conflict is indicated as non-contending conflicts The same, no longer repeat here.
  • the method for the base station to count the number of random access times with the number of preamble retransmissions being 1, and the sum of all retransmission random access times in step S702 includes:
  • the base station determines, according to the random access information reported by multiple UEs, the UE reports the UEs. Random access information;
  • steps S802 to S808 are required;
  • step S803 If yes, go to step S803; otherwise, go to step S808;
  • step S805 If yes, go to step S805; otherwise, go to step S808;
  • step S807 If yes, go to step S807; otherwise, go to step S808;
  • the initial number of random access times with a number of preamble retransmissions of 1, the sum of random retransmissions of all retransmissions, and the sum of random access times are both zero.
  • the threshold is preset by the base station.
  • the threshold may be set to 1000.
  • step S809 If yes, go to step S809; otherwise, go to step S810;
  • Stop acquiring the random access information reported by the UE determine the sum of the random access times of the number of preamble retransmissions of 1 and the number of random access times of all retransmissions, and then set the number of preamble retransmissions to 1. The number of random accesses, the sum of all retransmission random access times, and the sum of random access times are cleared;
  • the base station continues to determine the random access information reported by the next UE.
  • steps S802 to S808 are performed until the sum of the random access times is greater than or equal to the preset threshold, and the number of random access times and the number of preamble retransmission times of 1 at this time are determined. The sum of the number of random accesses retransmitted.
  • the base station determines, according to the contention conflict indication, the first random access probability and the second random access probability, where the first random access probability indicates that the number of preamble transmissions is 1. Entry probability, the second random access probability indicates that the number of preamble retransmissions is 1 The probability of entering random access in all retransmissions;
  • the method for determining, by the base station, the first random access probability and the second random access probability according to the contention conflict indication for the non-contention conflict random access information includes:
  • the base station adjusts the first random access power control parameter according to the first random access probability, and adjusts the second random access power control parameter according to the second random access probability, where the first random access power control parameter is The preamble initially expects received power, and the second random access power control parameter is a power climb step.
  • the base station adjusts the first random access power control parameter according to the first random access probability
  • the method for adjusting the second random access power control parameter according to the second random access probability includes:
  • Condition 1 is the maximum probability of successful random access with the first random access probability > preamble transmission number being 1, and the current preamble initial expected received power > preamble initial expected received power before first adjustment - preamble initial expected received power Maximum number of unidirectional adjustments * adjustment step size of the initial expected received power of the preamble;
  • step S902 is performed; otherwise, step S903 is performed; 5902.
  • Adjusted preamble initial expected received power current preamble initial expected received power-adjusted step size of preamble initial expected received power;
  • Condition 2 is the minimum probability of successful random access with the first random access probability ⁇ preamble transmission number being 1, and the current preamble initial expected received power ⁇ preamble initial expected received power before first adjustment + preamble initial expected received power Maximum number of unidirectional adjustments * adjustment step size of the initial expected received power of the preamble;
  • step S804 is performed; otherwise, step S905 is performed;
  • Adjusted preamble initial expected received power current preamble initial expected received power + preamble initial expected received power adjustment step size;
  • the condition 3 is the second random access probability > the maximum probability of successful random access with the number of preamble retransmissions being 1, and the current power climbing step size is >2;
  • step S906 is performed; otherwise, step S907 is performed;
  • adjusted power climbing step current power climbing step -2;
  • condition 4 is a minimum probability of successful random access with a second random access probability ⁇ preamble retransmission number of 1, and the current power climbing step is ⁇ 6;
  • step S908 is performed
  • the maximum probability of successful random access with a preamble retransmission number of 1 is 95%.
  • the maximum number of unidirectional adjustments of the initial initial expected received power is 5
  • the adjustment step size of the preamble initial expected received power is 2 dB.
  • the base station sends a system message block SIB message carrying the adjusted preamble initial expected received power and the power climbing step to the UE, so that the UE adjusts according to the adjustment.
  • the subsequent preamble initially expects the received power and power to climb the step size, calculates the transmit power of the random access preamble, and performs a subsequent process such as transmitting the preamble.
  • the base station adaptively adjusts the random access power control parameter (the preamble initial expected received power and the power ramp step), so that the UE can calculate the random access preamble according to the adjusted random access power control parameter.
  • the transmit power controls the delay in the UE random access process within a desired range.
  • an embodiment of the present invention provides a method for adjusting a random access power control parameter, where the method includes:
  • the base station acquires random access information reported by multiple user equipments, where the random access information includes a preamble transmission number and a competition conflict indication.
  • the method for the base station to acquire the random access information reported by the multiple user equipments is: the base station sends a request message for acquiring the random access information to the multiple UEs;
  • the base station receives random access information reported by multiple UEs.
  • the base station statistics the contention conflict indication is random access information of the non-contending conflict; preferably, the method for the base station to collect the random access information indicating that the contention conflict is non-contending conflict includes:
  • the number of random access times, the sum of random access times, and the number of random access times of the number of preamble transmissions of the number of preamble transmissions are 1, and the number of random access times of the number of preamble transmissions is i;
  • the value of i is a natural number greater than or equal to 2, and the maximum value of i is the maximum number of preamble transmissions.
  • the method for detecting the sum of the number of random access times and the number of random access times of the number of preamble transmissions in the random access information indicating that the contention conflict is indicated as non-contending conflicts is the same as the method shown in FIG. The same, no longer repeat here.
  • the method for the base station to count the number of random access times of the number of preamble transmissions in step S1002 includes:
  • the base station determines, according to the random access information reported by the multiple UEs, the random access information reported by each UE.
  • steps S1102 to S1106 are required.
  • step S1103 If yes, go to step S1103; otherwise, go to step S1106;
  • step S1105 If yes, go to step S1105; otherwise, go to step S1106;
  • the number of preamble transmissions is 2
  • the number of random access times with the number of preamble transmissions is 2 is increased by 1
  • the number of preamble transmission times is 3, the number of random access times with the number of preamble transmissions is 3 is increased by 1; .
  • the competition conflict indication is non-contending conflict, that is, the UE's competition conflict resolution is successful; the sum of the random access times and the initial value of the number of random access times of the preamble transmission number i are both 0.
  • the threshold is preset by the base station.
  • the threshold may be set to 1000.
  • step S1107 If yes, go to step S1107; otherwise, go to step S1108;
  • Stop acquiring the random access information reported by the UE determine the sum of the number of random access times and the number of random access times of the number of preamble transmissions to be i, and then, the number of random access times with the number of preamble transmissions being i and random. The sum of the access times is cleared;
  • the base station continues to determine random access information reported by the next UE.
  • steps S1102 to S1106 are performed until The sum of the random access times is greater than or equal to the preset threshold, and the sum of the random access times and the random access times whose number of preamble transmissions is i at this time is determined.
  • the base station determines, according to the contention conflict indication, the first random access probability and the preamble retransmission random access delay, where the first random access probability indicates that the number of preamble transmissions is 1. Random access probability
  • the method for determining, by the base station, the first random access probability and the preamble retransmission random access delay according to the contention conflict indication for the non-contending collision random access information includes:
  • the quotient of the sum of the number of random accesses with the number of preamble transmissions and the number of random accesses is taken as the random access probability AP(i) with the number of preamble transmissions i, and the preamble retransmission random access delay is
  • the AP(1) indicates the first random access probability, and indicates a random access delay in which the number of preamble transmissions is i.
  • the base station adjusts the first random access power control parameter according to the first random access probability, and adjusts the second random access power control parameter according to the preamble retransmission random access delay, where the first random access power control
  • the parameter is the preamble initial expected received power
  • the second random access power control parameter is the power climb step.
  • the base station adjusts the first random access power control parameter according to the first random access probability, and adjusts the second random access power control parameter according to the preamble retransmission random access delay.
  • Condition 1 is the maximum probability of successful random access with the first random access probability > preamble transmission number being 1, and the current preamble initial expected received power > preamble initial expected received power before first adjustment - preamble initial expected received power Maximum number of unidirectional adjustments * adjustment step size of the initial expected received power of the preamble; If condition 1 is satisfied, step S1202 is performed; otherwise, step S1203 is performed;
  • Adjusted preamble initial expected received power current preamble initial expected received power - an adjustment step size of the preamble initial expected received power;
  • Condition 2 is the minimum probability of successful random access with the first random access probability ⁇ preamble transmission number being 1, and the current preamble initial expected received power ⁇ preamble initial expected received power before first adjustment + preamble initial expected received power Maximum number of unidirectional adjustments * adjustment step size of the initial expected received power of the preamble;
  • step S1204 is performed; otherwise, step S1205 is performed;
  • the condition 3 is the second random access probability > the maximum probability of successful random access with the number of preamble retransmissions being 1, and the current power climbing step size is >2;
  • step S1206 is performed; otherwise, step S1207 is performed;
  • adjusted power climbing step current power climbing step -2;
  • Condition 4 is the maximum value of the preamble retransmission random access delay > preamble retransmission random access average delay, and the current power climbing step size is ⁇ 6;
  • step S1208 is performed
  • the minimum value of the average delay of the preamble retransmission random access is 15.75ms.
  • the maximum value of the average delay of the preamble retransmission random access is 34.5ms.
  • the adjustment step size of the preamble initial expected received power is 2 dB.
  • the base station sends a system message block SIB message carrying the adjusted preamble initial expected received power and the power climbing step to the UE, so that the UE adjusts according to the adjustment.
  • the subsequent preamble initially expects the received power and power to climb the step size, calculates the transmit power of the random access preamble, and performs a subsequent process such as transmitting the preamble.
  • the base station can adaptively adjust the random access power control parameters (the preamble initial expected receive power and the power climb step), so that the UE can calculate the random access preamble according to the adjusted random access power control parameter. Transmit power, and control the delay in the random access process of the UE within a desired range.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
  • a computer-usable storage medium including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a bootable computer or other programmable data processing device.
  • a computer readable memory that operates in a particular manner, causing instructions stored in the computer readable memory to produce an article of manufacture comprising instruction means implemented in one or more flows and/or block diagrams of the flowchart The function specified in the box or in multiple boxes.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明提供了一种调整控制参数的装置及方法,可以自适应调整功率控制参数,进而将UE随机接入过程中的时延控制在期望范围内。本发明方法包括:基站获取多个用户设备UE上报的随机接入信息,其中,随机接入信息包括前导发送次数和竞争冲突指示;基站统计竞争冲突指示为非竞争冲突的随机接入信息;基站根据竞争冲突指示为非竞争冲突的随机接入信息确定第一随机接入概率,其中,第一随机接入概率表示前导发送次数为1的随机接入概率;基站根据第一随机接入概率,调整第一随机接入功率控制参数,第一随机接入功率控制参数为前导初始期望接收功率。

Description

一种调整随机接入功率控制参数的装置及方法 技术领域
本发明涉及通信领域, 尤其涉及一种调整随机接入功率控制参数的装置 及方法。 背景技术
在长期演进 ( Long Term Evolution, LTE ) 系统中, 用户设备( User Equipment, UE )通过随机接入过程向基站发送前导, 在收到基站向该 UE反 馈的前导响应消息后, UE接入基站。
UE需用一定的发射功率向基站发送随机接入前导。 UE确定随机接前导的 发射功率的过程主要包括以下两个步骤:
第一步: 基站确定 UE发送随机接前导的发射功率的控制参数。
基站确定 UE发送随机接前导的发射功率的控制参数(以下称为随机接入 功率控制参数) , 该控制参数包括前导初始期望接收功率 (preamble Initial Received Target Power )和功率攀升步长 ( ower Ramping Step )等。 基站可以 釆用系统默认的控制参数也可以釆用人工设置控制参数;
基站将确定的随机接入功率控制参数通过系统消息块 ( System Information Block, SIB ) 消息发送给 UE。
第二步: UE根据基站发送的随机接入功率控制参数确定随机接入前导的 发射功率。
通过 SIB消息获取随机接入功率控制参数后, UE根据该控制参数计算随机 接入前导的发射功率:
PPRACH = MIN {PCMAX , PREAMBLE— RECEIVED— TARGET— POWER + PL}
[dBm] 其中, PpRAQi表示 UE随机接入前导的发射功率, PRACH表示物理随机接 入信道( Physical Random Access Channel ) ; ΡΓΜΑΥ表示 UE在服务小区进行 随机接入时的最大发射功率; PREAMBLE— RECEIVED— TARGET— POWER表 示前导目标接收功率, PL为路径损耗( Path Loss ) , PL = PRS - RSRP, 其中, PRS表示参考信号的发射功率, RSRP为参考信号接收功率; 前导目标接收功率
( PREAMBLE RECEIVED TARGET POWER )计算过程如下:
PREAMBLE— RECEIVED— TARGET— POWER = preamble Initial Received Target Power + DELTA— PREAMBLE +
(PREAMBLE— TRANSMISSION— COUNTER - 1) * power Ramping Step
其中, preamble Initial Received Target Power表示前导初始期望接收功率 , PREAMBLE—TRANSMISSION— COUNTER表示随机接入过程中前导发送 次数, power Ramping Ste 表示功率攀升步长, DELTA— PREAMBLE表示不 同的前导格式( preamble format )的发射功率偏置, 其定义如下面的表 1所示 表 1
Figure imgf000004_0001
现有技术中, 针对 UE随机接入前导的发射功率的控制参数, 无论是釆用 系统默认值, 还是釆用人工设置的值, 控制参数的值都是固定的, 不能根据 实际需要进行自适应调整, 进而导致 UE随机接入过程中的时延不可控。 发明内容
本发明实施例提供了一种调整随机接入功率控制参数的装置及方法, 用 以自适应调整功率控制参数,进而将 UE随机接入过程中的时延控制在期望范 围内。
第一方面, 本发明实施例提供一种调整随机接入功率控制参数的装置, 包括:
随机接入信息获取单元, 用于获取多个用户设备 UE 上报的随机接入信 息, 其中, 随机接入信息包括前导发送次数和竟争冲突指示;
随机接入信息统计单元, 用于统计竟争冲突指示为非竟争冲突的随机接 入信息;
随机接入概率确定单元, 用于根据竟争冲突指示为非竟争冲突的随机接 入信息确定第一随机接入概率, 其中, 第一随机接入概率表示前导发送次数 为 1的随机接入概率;
控制参数调整单元, 用于根据第一随机接入概率, 调整第一随机接入功 率控制参数, 第一随机接入功率控制参数为前导初始期望接收功率。
结合第一方面, 在第一种可能的实现方式中, 随机接入信息统计单元具 体用于:
统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导发送次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取随机接入次数的 总和;
随机接入概率确定单元具体用于:
将前导发送次数为 1 的随机接入次数与随机接入次数的总和的商值作为 第一随机接入概率。
结合第一方面或第一方面的第一种可能的实现方式, 在第一方面的第二 种可能的实现方式中, 控制参数调整单元具体用于:
当第一随机接入概率 >前导发送次数为 1的成功随机接入的最大概率, 且 当前的前导初始期望接收功率 >首次调整前的前导初始期望接收功率-前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 -前导初始期 望接收功率的调整步长; 或者,
当第一随机接入概率 <前导发送次数为 1的成功随机接入的最小概率, 且 当前的前导初始期望接收功率<首次调整前的前导初始期望接收功率 +前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 +前导初始期 望接收功率的调整步长。
结合第一方面, 第一方面的第一种至第二种中任一可能的实现方式, 在 第一方面的第三种可能的实现方式中, 随机接入概率确定单元, 还用于根据 竟争冲突指示为非竟争冲突的随机接入信息确定第二随机接入概率, 第二随 机接入概率表示前导重传次数为 1 的随机接入在所有重传的随机接入中的概 率;
控制参数调整单元, 还用于根据第二随机接入概率, 调整第二随机接入 功率控制参数, 第二随机接入功率控制参数为功率攀升步长。
结合第一方面的第三种可能的实现方式, 在第一方面的第四种可能的实 现方式中, 随机接入信息统计单元, 具体用于:
统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导重传次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取所有重传的随机 接入次数的总和;
随机接入概率确定单元, 具体用于:
将前导重传次数为 1 的随机接入次数与所有重传的随机接入次数的总和 的商值作为第二随机接入概率。
结合第一方面的第三种或第四种可能的实现方式, 在第一方面的第五种 可能的实现方式中, 控制参数调整单元, 具体用于:
当第二随机接入概率 >前导重传次数为 1的成功随机接入的最大概率, 且 当前的功率攀升步长 >2时, 调整后的功率攀升步长=当前的功率攀升步长 -2; 或者,
当第二随机接入概率 <前导重传次数为 1的成功随机接入的最小概率, 且 当前的功率攀升步长 <6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。 结合第一方面, 第一方面的第一种至第二种中任一可能的实现方式, 在 第一方面的第六种可能的实现方式中, 随机接入概率确定单元, 还用于根据竟争冲突指示为非竟争冲突的随机 接入信息确定前导重传随机接入时延; 控制参数调整单元, 还用于根据前导重传随机接入时延, 调整第二随机 接入功率控制参数, 第二随机接入功率控制参数为功率攀升步长。
结合第一方面的第六种可能的实现方式, 在第一方面的第七种可能的实 前¾¾¾¾ ^嫩
现方式中, 前导重传随机接入时延为 ζ ΜίγΑΡ(ΐ)Ι(\-ΑΡ{ )) , 其中, ΑΡ(1)表 示第一随机接入概率, AP(i)表示前导发送次数为 i的随机接入概率, 0表示 前导发送次数为 i的随机接入时延。
结合第一方面的第六种或第七种可能的实现方式, 在第一方面的第八种 可能的实现方式中, 控制参数调整单元, 具体用于:
当前导重传随机接入时延 <前导重传随机接入平均时延的最小值, 且当前 的功率攀升步长>2时,调整后的功率攀升步长=当前的功率攀升步长 -2;或者, 当前导重传随机接入时延 >前导重传随机接入平均时延的最大值, 且当前 的功率攀升步长<6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。 结合第一方面, 第一方面的第一种至第八种中任一可能的实现方式, 在 第一方面的第九种可能的实现方式中, 随机接入信息获取单元, 具体用于: 向多个 UE发送获取随机接入信息的请求消息; 接收多个 UE上报的随机接入信息。
第二方面, 本发明实施例提供一种调整随机接入功率控制参数的装置, 包括:
收发器, 用于获取多个用户设备 UE上报的随机接入信息, 其中, 随机接 入信息包括前导发送次数和竟争冲突指示;
存储器, 用于存储多个 UE上报的随机接入信息;
处理器, 用于统计竟争冲突指示为非竟争冲突的随机接入信息; 根据竟 争冲突指示为非竟争冲突的随机接入信息确定第一随机接入概率, 其中, 第 一随机接入概率表示前导发送次数为 1 的随机接入概率; 根据第一随机接入 概率, 调整第一随机接入功率控制参数, 第一随机接入功率控制参数为前导 初始期望接收功率。
结合第二方面, 在第一种可能的实现方式中, 处理器在统计竟争冲突指 示为非竟争冲突的所述随机接入信息时, 具体用于:
统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导发送次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取随机接入次数的 总和;
处理器在根据竟争冲突指示为非竟争冲突的随机接入信息确定第一随机 接入概率时, 具体用于:
将前导发送次数为 1 的随机接入次数与随机接入次数的总和的商值作为 第一随机接入概率。
结合第二方面或第二方面的第一种可能的实现方式, 在第二方面的第二 种可能的实现方式中, 处理器在根据第一随机接入概率, 调整第一随机接入 功率控制参数时, 具体用于:
当第一随机接入概率 >前导发送次数为 1的成功随机接入的最大概率, 且 当前的前导初始期望接收功率 >首次调整前的前导初始期望接收功率-前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 -前导初始期 望接收功率的调整步长; 或者,
当第一随机接入概率 <前导发送次数为 1的成功随机接入的最小概率, 且 当前的前导初始期望接收功率<首次调整前的前导初始期望接收功率 +前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 +前导初始期 望接收功率的调整步长。
结合第二方面, 第二方面的第一种至第二种中任一可能的实现方式, 在 第二方面的第三种可能的实现方式中, 处理器, 还用于根据竟争冲突指示为 非竟争冲突的随机接入信息确定第二随机接入概率, 第二随机接入概率表示 前导重传次数为 1 的随机接入在所有重传的随机接入中的概率; 根据第二随 机接入概率, 调整第二随机接入功率控制参数, 第二随机接入功率控制参数 为功率攀升步长。
结合第二方面的第三种可能的实现方式, 在第二方面的第四种可能的实 现方式中, 处理器在统计竟争冲突指示为非竟争冲突的随机接入信息时, 具 体用于:
统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导重传次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取所有重传的随机 接入次数的总和;
处理器在根据竟争冲突指示为非竟争冲突的随机接入信息确定第二随机 接入概率时, 具体用于:
将前导重传次数为 1 的随机接入次数与所有重传的随机接入次数的总和 的商值作为第二随机接入概率。
结合第二方面的第三种或第四种可能的实现方式, 在第二方面的第五种 可能的实现方式中, 处理器在根据第二随机接入概率, 调整第二随机接入功 率控制参数时, 具体用于:
当第二随机接入概率 >前导重传次数为 1的成功随机接入的最大概率, 且 当前的功率攀升步长 >2时, 调整后的功率攀升步长=当前的功率攀升步长 -2; 或者,
当第二随机接入概率 <前导重传次数为 1的成功随机接入的最小概率, 且 当前的功率攀升步长 <6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。 结合第二方面, 第二方面的第一种至第二种中任一可能的实现方式, 在 第二方面的第六种可能的实现方式中, 处理器, 还用于根据竟争冲突指示为非竟争冲突的随机接入信息确定前 导重传随机接入时延; 根据前导重传随机接入时延, 调整第二随机接入功率 控制参数, 第二随机接入功率控制参数为功率攀升步长。
结合第二方面的第六种可能的实现方式, 在第二方面的第七种可能的实 前¾¾¾¾ ^嫩
现方式中, 前导重传随机接入时延为 ζ ΜίγΑΡ(ΐ)Ι(\-ΑΡ{ )) , 其中, ΑΡ(1)表 示第一随机接入概率, AP(i)表示前导发送次数为 i的随机接入概率, 0表示 前导发送次数为 i的随机接入时延。
结合第二方面的第六种或第七种可能的实现方式, 在第二方面的第八种 可能的实现方式中, 处理器在根据前导重传随机接入时延, 调整第二随机接 入功率控制参数时, 具体用于: 当前导重传随机接入时延 <前导重传随机接入平均时延的最小值, 且当前 的功率攀升步长>2时,调整后的功率攀升步长=当前的功率攀升步长 -2;或者, 当前导重传随机接入时延 >前导重传随机接入平均时延的最大值, 且当前 的功率攀升步长<6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
结合第二方面, 第二方面的第一种至第八种中任一可能的实现方式, 在 第二方面的第九种可能的实现方式中, 收发器具体用于:
向多个 UE发送获取随机接入信息的请求消息;
接收、 多个 UE上报的、 随机接入信息。
第三方面, 本发明实施例提供一种调整随机接入功率控制参数的方法, 包括:
基站获取多个用户设备 UE上报的随机接入信息, 其中, 随机接入信息包 括前导发送次数和竟争冲突指示;
基站统计竟争冲突指示为非竟争冲突的随机接入信息; 基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第一随机接入 概率, 其中, 第一随机接入概率表示前导发送次数为 1的随机接入概率; 基站根据第一随机接入概率, 调整第一随机接入功率控制参数, 第一随 机接入功率控制参数为前导初始期望接收功率。
结合第三方面, 在第一种可能的实现方式中, 基站统计竟争冲突指示为 非竟争冲突的随机接入信息, 包括:
统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导发送次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取随机接入次数的 总和;
基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第一随机接入 概率, 包括:
将前导发送次数为 1 的随机接入次数与随机接入次数的总和的商值作为 第一随机接入概率。
结合第三方面或第三方面的第一种可能的实现方式, 在第三方面的第二 种可能的实现方式中, 基站根据第一随机接入概率, 调整第一随机接入功率 控制参数, 包括:
当第一随机接入概率 >前导发送次数为 1的成功随机接入的最大概率, 且 当前的前导初始期望接收功率 >首次调整前的前导初始期望接收功率-前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 -前导初始期 望接收功率的调整步长; 或者,
当第一随机接入概率 <前导发送次数为 1的成功随机接入的最小概率, 且 当前的前导初始期望接收功率<首次调整前的前导初始期望接收功率 +前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 +前导初始期 望接收功率的调整步长。 结合第三方面, 第三方面的第一种至第二种中任一可能的实现方式, 在 第三方面的第三种可能的实现方式中, 方法还包括:
基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第二随机接入 概率, 第二随机接入概率表示前导重传次数为 1 的随机接入在所有重传的随 机接入中的概率;
基站根据第二随机接入概率, 调整第二随机接入功率控制参数, 第二随 机接入功率控制参数为功率攀升步长。
结合第三方面的第三种可能的实现方式, 在第三方面的第四种可能的实 现方式中, 基站统计竟争冲突指示为非竟争冲突的随机接入信息, 包括: 统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导重传次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取所有重传的随机 接入次数的总和;
基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第二随机接入 概率, 包括:
将前导重传次数为 1 的随机接入次数与所有重传的随机接入次数的总和 的商值作为第二随机接入概率。
结合第三方面的第三种或第四种可能的实现方式, 在第三方面的第五种 可能的实现方式中, 基站根据第二随机接入概率, 调整第二随机接入功率控 制参数, 包括:
当第二随机接入概率 >前导重传次数为 1的成功随机接入的最大概率, 且 当前的功率攀升步长 >2时, 调整后的功率攀升步长=当前的功率攀升步长 -2; 或者,
当第二随机接入概率 <前导重传次数为 1的成功随机接入的最小概率, 且 当前的功率攀升步长 <6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
结合第三方面, 第三方面的第一种至第二种中任一可能的实现方式, 在 第三方面的第六种可能的实现方式中, 方法还包括: 基站根据竟争冲突指示为非竟争冲突的随机接入信息确定前导重传随机 接入时延;
基站根据前导重传随机接入时延, 调整第二随机接入功率控制参数, 第二随 机接入功率控制参数为功率攀升步长。 结合第三方面的第六种可能的实现方式, 在第三方面的第七种可能的实 前¾¾¾¾ ^嫩
现方式中, 前导重传随机接入时延为 ζ ΜίγΑΡ(ΐ)Ι(\-ΑΡ{ )) , 其中, ΑΡ(1)表 示第一随机接入概率, AP(i)表示前导发送次数为 i的随机接入概率, 0表示 前导发送次数为 i的随机接入时延。
结合第三方面的第六种或第七种可能的实现方式, 在第三方面的第八种 可能的实现方式中, 基站根据前导重传随机接入时延, 调整第二随机接入功 率控制参数, 包括:
当前导重传随机接入时延 <前导重传随机接入平均时延的最小值, 且当前 的功率攀升步长>2时,调整后的功率攀升步长=当前的功率攀升步长 -2;或者, 当前导重传随机接入时延 >前导重传随机接入平均时延的最大值, 且当前 的功率攀升步长<6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
结合第三方面, 第三方面的第一种至第八种中任一可能的实现方式, 在 第三方面的第九种可能的实现方式中,基站获取多个用户设备 UE上报的随机 接入信息, 包括:
基站向多个 UE发送获取随机接入信息的请求消息;
基站接收多个 UE上报的随机接入信息。 本发明实施例中,基站获取多个用户设备 UE上报的随机接入信息,其中, 随机接入信息包括前导发送次数和竟争冲突指示; 基站统计竟争冲突指示为 非竟争冲突的随机接入信息; 基站根据竟争冲突指示为非竟争冲突的随机接 入信息确定第一随机接入概率, 其中, 第一随机接入概率表示前导发送次数 为 1 的随机接入概率; 基站根据第一随机接入概率, 调整第一随机接入功率 控制参数, 第一随机接入功率控制参数为前导初始期望接收功率; 进而可以 自适应调整随机接入功率控制参数,使得 UE可以根据调整后的随机接入功率 控制参数计算随机接入前导的发射功率,进而将 UE随机接入过程中的时延控 制在期望范围内。 附图说明
图 1为 LTE通信系统架构示意图;
图 2为本发明实施例提供的一种调整随机接入功率控制参数的装置结构 示意图;
图 3为本发明实施例提供的一种调整随机接入功率控制参数的装置结构 示意图;
图 4为本发明实施例提供的一种调整随机接入功率控制参数的方法流程 示意图;
图 5为本发明实施例提供的基站统计竟争冲突指示为非竟争冲突的随机 接入信息的方法流程示意图;
图 6为本发明实施例提供的调整随机接入功率控制参数的方法流程示意 图;
图 7为本发明实施例提供的一种调整随机接入功率控制参数的方法流程 示意图;
图 8为本发明实施例提供的基站统计竟争冲突指示为非竟争冲突的随机 接入信息的方法流程示意图;
图 9为本发明实施例提供的调整随机接入功率控制参数的方法流程示意 图;
图 10为本发明实施例提供的一种调整随机接入功率控制参数的方法流程 示意图;
图 11为本发明实施例提供的基站统计竟争冲突指示为非竟争冲突的随机 接入信息的方法流程示意图;
图 12为本发明实施例提供的调整随机接入功率控制参数的方法流程示意 具体实施方式
本发明实施例提供了一种调整随机接入功率控制参数的装置及方法, 可 以自适应调整功率控制参数,进而将 UE随机接入过程中的时延控制在期望范 围内。
本发明实施例适用于长期演进( Long Term Evolution , LTE )通信系统。 如图 1所示, 在 LTE通信系统的架构示意图中, 无线通信网络 100包括若干 基站 110和其他网络实体,用以支撑若干用户设备(User Equipment, UE ) 120 进行通信。
其中, 基站 110 , 可以是 LTE中的演进型基站( evolved NodeB , eNB )。 一个基站 110可能支持或管理一个或多个小区, UE120需要和网络通信时, UE120将选择基站 110中的一个小区发起接入。
UE120 也可称之为移动终端 (Mobile Terminal, MT )、 移动台 (Mobile Station, MS )等, 可以通过无线接入网 ( Radio Access Network, RAN )与一 个或多个核心网进行通信。
核心网设备 130与一个或多个基站 110连接, 核心网设备 130由移动管 理实体(Mobility Management Entity, MME )和 /或其他网络实体组成。
实施例一
如图 2所示, 本发明实施例提供了一种调整随机接入功率控制参数的装 置, 包括:
随机接入信息获取单元 21 , 用于获取多个用户设备 UE上报的随机接入 信息, 其中, 随机接入信息包括前导发送次数和竟争冲突指示;
随机接入信息统计单元 22 , 用于统计竟争冲突指示为非竟争冲突的随机 接入信息;
随机接入概率确定单元 23 , 用于根据竟争冲突指示为非竟争冲突的随机 接入信息确定第一随机接入概率, 其中, 第一随机接入概率表示前导发送次 数为 1的随机接入概率;
控制参数调整单元 24, 用于根据第一随机接入概率, 调整第一随机接入 功率控制参数, 第一随机接入功率控制参数为前导初始期望接收功率。
较佳地, 随机接入信息统计单元 22具体用于:
统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导发送次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取随机接入次数的 总和;
随机接入概率确定单元 23具体用于:
将前导发送次数为 1 的随机接入次数与随机接入次数的总和的商值作为 第一随机接入概率。
较佳地, 控制参数调整单元 24具体用于:
当第一随机接入概率 >前导发送次数为 1的成功随机接入的最大概率, 且 当前的前导初始期望接收功率 >首次调整前的前导初始期望接收功率-前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 -前导初始期 望接收功率的调整步长; 或者,
当第一随机接入概率 <前导发送次数为 1的成功随机接入的最小概率, 且 当前的前导初始期望接收功率<首次调整前的前导初始期望接收功率 +前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 +前导初始期 望接收功率的调整步长。
较佳地, 随机接入概率确定单元 23 , 还用于根据竟争冲突指示为非竟争 冲突的随机接入信息确定第二随机接入概率, 第二随机接入概率表示前导重 传次数为 1的随机接入在所有重传的随机接入中的概率;
控制参数调整单元 24, 还用于根据第二随机接入概率, 调整第二随机接 入功率控制参数, 第二随机接入功率控制参数为功率攀升步长。 较佳地, 随机接入信息统计单元 22 , 具体用于: 统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导重传次数为 1 的随机接入次数; 统计竟争冲突指示为非竟争冲突的随机接入信息, 获取所有重传的随机 接入次数的总和; 随机接入概率确定单元 23 , 具体用于: 将前导重传次数为 1 的随机接入次数与所有重传的随机接入次数的总和 的商值作为第二随机接入概率。
较佳地, 控制参数调整单元 24 , 具体用于:
当第二随机接入概率 >前导重传次数为 1的成功随机接入的最大概率, 且 当前的功率攀升步长 >2时, 调整后的功率攀升步长=当前的功率攀升步长 -2; 或者,
当第二随机接入概率 <前导重传次数为 1的成功随机接入的最小概率, 且 当前的功率攀升步长 <6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。 较佳地, 随机接入概率确定单元 23 , 还用于根据竟争冲突指示为非竟争 冲突的随机接入信息确定前导重传随机接入时延;
控制参数调整单元 24 , 还用于根据前导重传随机接入时延, 调整第二随 机接入功率控制参数, 第二随机接入功率控制参数为功率攀升步长。
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较佳地, 前导重传随机接入时延为 ζ „ y(i_AP(ij) , 其中, ΑΡ(ι) 表示第一随机接入概率, AP(i)表示前导发送次数为 i的随机接入概率, k(P>表 示前导发送次数为 i的随机接入时延。
较佳地, 控制参数调整单元 24 , 具体用于: 当前导重传随机接入时延 <前导重传随机接入平均时延的最小值, 且当前 的功率攀升步长>2时,调整后的功率攀升步长=当前的功率攀升步长 -2;或者, 当前导重传随机接入时延 >前导重传随机接入平均时延的最大值, 且当前 的功率攀升步长<6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。 较佳地, 随机接入信息获取单元 21 , 具体用于:
向多个 UE发送获取随机接入信息的请求消息;
接收多个 UE上报的随机接入信息。
通过实施例一, 可以实现自适应调整随机接入功率控制参数, 进而使得 UE可以根据调整后的随机接入功率控制参数计算随机接入前导的发射功率, 将 UE随机接入过程中的时延控制在期望范围内。
实施例二
如图 3 所示, 本发明实施例提供了一种调整随机接入功率控制参数的装 置, 包括:
收发器 31 , 用于获取多个用户设备 UE上报的随机接入信息, 其中, 随 机接入信息包括前导发送次数和竟争冲突指示;
存储器 32, 用于存储多个 UE上报的随机接入信息;
处理器 33 , 用于统计竟争冲突指示为非竟争冲突的随机接入信息; 根据 竟争冲突指示为非竟争冲突的随机接入信息确定第一随机接入概率, 其中, 第一随机接入概率表示前导发送次数为 1 的随机接入概率; 根据第一随机接 入概率, 调整第一随机接入功率控制参数, 第一随机接入功率控制参数为前 导初始期望接收功率。
较佳地, 处理器 32在统计竟争冲突指示为非竟争冲突的所述随机接入信 息时, 具体用于:
统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导发送次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取随机接入次数的 总和;
处理器 32在根据竟争冲突指示为非竟争冲突的随机接入信息确定第一随 机接入概率时, 具体用于:
将前导发送次数为 1 的随机接入次数与随机接入次数的总和的商值作为 第一随机接入概率。 较佳地, 处理器 32在根据第一随机接入概率, 调整第一随机接入功率控 制参数时, 具体用于:
当第一随机接入概率 >前导发送次数为 1的成功随机接入的最大概率, 且 当前的前导初始期望接收功率 >首次调整前的前导初始期望接收功率-前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 -前导初始期 望接收功率的调整步长; 或者,
当第一随机接入概率 <前导发送次数为 1的成功随机接入的最小概率, 且 当前的前导初始期望接收功率<首次调整前的前导初始期望接收功率 +前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 +前导初始期 望接收功率的调整步长。
较佳地, 处理器 32还用于根据竟争冲突指示为非竟争冲突的随机接入信 息确定第二随机接入概率, 第二随机接入概率表示前导重传次数为 1 的随机 接入在所有重传的随机接入中的概率; 根据第二随机接入概率, 调整第二随 机接入功率控制参数, 第二随机接入功率控制参数为功率攀升步长。
较佳地,处理器 32在统计竟争冲突指示为非竟争冲突的随机接入信息时, 具体用于:
统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导重传次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取所有重传的随机 接入次数的总和;
处理器 32在根据竟争冲突指示为非竟争冲突的随机接入信息确定第二随 机接入概率时, 具体用于:
将前导重传次数为 1 的随机接入次数与所有重传的随机接入次数的总和 的商值作为第二随机接入概率。
较佳地, 处理器 32在根据第二随机接入概率, 调整第二随机接入功率控 制参数时, 具体用于:
当第二随机接入概率 >前导重传次数为 1的成功随机接入的最大概率, 且 当前的功率攀升步长 >2时, 调整后的功率攀升步长=当前的功率攀升步长 -2; 或者,
当第二随机接入概率 <前导重传次数为 1的成功随机接入的最小概率, 且 当前的功率攀升步长 <6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。 较佳地, 处理器 32还用于根据竟争冲突指示为非竟争冲突的随机接入信 息确定前导重传随机接入时延; 根据前导重传随机接入时延, 调整第二随机 接入功率控制参数, 第二随机接入功率控制参数为功率攀升步长。
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较佳地, 前导重传随机接入时延为 ζ „ y(i_AP(ij) , 其中, ΑΡ(ι) 表示第一随机接入概率, AP(i)表示前导发送次数为 i的随机接入概率, k(P>表 示前导发送次数为 i的随机接入时延。
较佳地, 处理器 32在根据前导重传随机接入时延, 调整第二随机接入功 率控制参数时, 具体用于: 当前导重传随机接入时延 <前导重传随机接入平均时延的最小值, 且当前 的功率攀升步长>2时,调整后的功率攀升步长=当前的功率攀升步长 -2;或者, 当前导重传随机接入时延 >前导重传随机接入平均时延的最大值, 且当前 的功率攀升步长<6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
较佳地, 收发器 31具体用于:
向多个 UE发送获取随机接入信息的请求消息;
接收、 多个 UE上报的、 随机接入信息 通过实施例二中的收发器、 存储器、 以及处理器, 可以实现自适应调整 随机接入功率控制参数,进而使得 UE可以根据调整后的随机接入功率控制参 数计算随机接入前导的发射功率,将 UE随机接入过程中的时延控制在期望范 围内。
实施例三 如图 4所示, 本发明实施例提供了一种调整随机接入功率控制参数的方 法, 该方法包括:
5401、基站获取多个用户设备 UE上报的随机接入信息, 其中, 随机接入 信息包括前导发送次数和竟争冲突指示;
较佳地, 基站获取多个用户设备 UE上报的随机接入信息的方法包括: 基站向多个 UE发送获取随机接入信息的请求消息;
基站接收多个 UE上报的随机接入信息。
其中, 多个 UE中的 UE是指任一完成随机接入、 且支持随机接入信道信 息上报的 UE; 竟争冲突是指, 一个小区的多个 UE在相同的物理随机接入信 道(Physical Random Access Channel, PRACH )上使用相同的前导发起随机 接入时产生的竟争冲突; UE 是否支持随机接入信道信息的上报, 可以通过 UE能力信息( IE UE-EUTRA-Capability )中的信元 r9协议版本中的自优化相 关的参数 ( son-Parameters-r9 )进行指示。
5402、 基站统计竟争冲突指示为非竟争冲突的随机接入信息;
较佳地, 基站统计竟争冲突指示为非竟争冲突的随机接入信息的方法包 括:
统计竟争冲突指示为非竟争冲突的随机接入信息,获取前导发送次数为 1 的随机接入次数;
统计竟争冲突指示为非竟争冲突的随机接入信息, 获取随机接入次数的 总和。
具体的, 如图 5所示, 步骤 S402中基站统计竟争冲突指示为非竟争冲突 的随机接入信息的方法包括:
5501、针对多个 UE上报的随机接入信息,基站逐一判断每个 UE上报的 随机接入信息;
即针对每个 UE上报的随机接入信息, 需要进行步骤 S502至 S506;
5502、 判断竟争冲突指示是否为非竟争冲突;
如果是, 执行步骤 S503; 否则, 执行步骤 S506; S503、 将随机接入次数的总和加 1;
5504、 判断前导发送次数是否为 1 ;
如果是, 执行步骤 S505; 否则, 执行步骤 S506;
5505、 将前导发送次数为 1的随机接入次数加 1 ;
其中, 竟争冲突指示为非竟争冲突即指该 UE的竟争冲突解决成功; 前导 发送次数为 1的随机接入次数和随机接入次数的总和的初始值均为 0。
5506、 判断随机接入次数的总和是否大于或等于预设门限;
其中, 门限是由基站预先设置的, 例如可以将该门限设置为 1000。
如果是, 执行步骤 S507; 否则, 执行步骤 S508;
5507、停止获取 UE上报的随机接入信息,确定截止此时的前导发送次数 为 1 的随机接入次数和随机接入次数的总和, 然后, 将前导发送次数为 1的 随机接入次数和随机接入次数的总和清零;
5508、 基站继续判断下一个 UE上报的随机接入信息;
即针对下一个 UE上报的随机接入信息, 执行步骤 S502至 S506, 直到随 机接入次数的总和大于或等于预设门限, 确定截止此时的前导发送次数为 1 的随机接入次数和随机接入次数的总和。
5403、 基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第一随 机接入概率, 其中, 第一随机接入概率表示前导发送次数为 1 的随机接入概 率;
较佳地, 基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第一 随机接入概率的方法包括:
基站将步骤 S402统计的前导发送次数为 1的随机接入次数与随机接入次 数的总和的商值作为第一随机接入概率, 即第一随机接入概率 AP(1)=前导发 送次数为 1的随机接入次数 /随机接入次数的总和。
5404、 基站根据第一随机接入概率, 调整第一随机接入功率控制参数, 第一随机接入功率控制参数为前导初始期望接收功率。
较佳地, 如图 6所示, 基站根据第一随机接入概率, 调整第一随机接入 功率控制参数的方法包括:
5601、 判断是否满足条件 1 ;
其中, 条件 1为第一随机接入概率 >前导发送次数为 1的成功随机接入的 最大概率, 且当前的前导初始期望接收功率 >首次调整前的前导初始期望接收 功率-前导初始期望接收功率的单向调整最大次数 *前导初始期望接收功率的 调整步长;
如果满足条件 1 , 执行步骤 S602; 否则, 执行步骤 S603;
5602、 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率- 前导初始期望接收功率的调整步长;
5603、 判断是否满足条件 2;
其中, 条件 2为第一随机接入概率 <前导发送次数为 1的成功随机接入的 最小概率, 且当前的前导初始期望接收功率 <首次调整前的前导初始期望接收 功率 +前导初始期望接收功率的单向调整最大次数 *前导初始期望接收功率的 调整步长;
如果满足条件 2, 执行步骤 S604;
5604、 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 + 前导初始期望接收功率的调整步长。
其中, 以下参数为基站预先设置的, 其建议的取值表 2所示;
表 2
Figure imgf000023_0001
可选的, 在步骤 S404之后, 基站将携带有调整后的前导初始期望接收功 率的系统消息块 SIB消息发送给 UE, 以便 UE根据调整后的前导初始期望接收 功率, 计算随机接入前导的发射功率, 并进行发送前导等后续过程。
通过实施例三, 可以实现基站自适应调整随机接入功率控制参数(前导 初始期望接收功率 ), 进而使得 UE可以根据调整后的随机接入功率控制参数 计算随机接入前导的发射功率,将 UE随机接入过程中的时延控制在期望范围 内。
实施例四
如图 7 所示, 本发明实施例提供了一种调整随机接入功率控制参数的方 法, 该方法包括:
5701、基站获取多个用户设备 UE上报的随机接入信息, 其中, 随机接入 信息包括前导发送次数和竟争冲突指示;
较佳地, 基站获取多个用户设备 UE上报的随机接入信息的方法包括: 基站向多个 UE发送获取随机接入信息的请求消息;
基站接收多个 UE上报的随机接入信息。
其中, 多个 UE中的 UE是指任一完成随机接入、 且支持随机接入信道信 息上艮的 UE。
5702、 基站统计竟争冲突指示为非竟争冲突的随机接入信息;
较佳地, 基站统计竟争冲突指示为非竟争冲突的随机接入信息的方法包 括:
基站统计竟争冲突指示为非竟争冲突的随机接入信息, 获取前导发送次 数为 1 的随机接入次数、 随机接入次数的总和、 前导重传次数为 1 的随机接 入次数、 以及所有重传的随机接入次数的总和。
具体的, 步骤 S702中基站统计竟争冲突指示为非竟争冲突的随机接入信 息中,前导发送次数为 1的随机接入次数和随机接入次数的总和的方法与图 5 所示的方法相同, 此处不再赘述。
如图 8所示, 步骤 S702中基站统计前导重传次数为 1的随机接入次数, 以及所有重传的随机接入次数的总和的方法包括:
S801、针对多个 UE上报的随机接入信息,基站逐一判断每个 UE上报的 随机接入信息;
即针对每个 UE上报的随机接入信息, 需要进行步骤 S802至 S808;
S802、 判断竟争冲突指示是否为非竟争冲突;
如果是, 执行步骤 S803; 否则, 执行步骤 S808;
S803、 将随机接入次数的总和加 1;
5804、 判断前导发送是否为重传;
如果是, 执行步骤 S805; 否则, 执行步骤 S808;
5805、 将所有重传的随机接入次数的总和加 1 ;
5806、 判断前导发送的重传次数是否为 1 ;
如果是, 执行步骤 S807; 否则, 执行步骤 S808;
5807、 将前导重传次数为 1的随机接入次数加 1 ;
前导重传次数为 1 的随机接入次数、 所有重传的随机接入次数的总和、 以及随机接入次数的总和的初始值均为 0。
5808、 判断随机接入次数的总和是否大于或等于预设门限;
其中, 门限是由基站预先设置的, 例如可以将该门限设置为 1000。
如果是, 执行步骤 S809; 否则, 执行步骤 S810;
5809、停止获取 UE上报的随机接入信息,确定截止此时的前导重传次数 为 1 的随机接入次数和所有重传的随机接入次数的总和, 然后, 将前导重传 次数为 1 的随机接入次数、 所有重传的随机接入次数的总和、 以及随机接入 次数的总和清零;
5810、 基站继续判断下一个 UE上报的随机接入信息;
即针对下一个 UE上报的随机接入信息, 执行步骤 S802至 S808, 直到随 机接入次数的总和大于或等于预设门限, 确定截止此时的前导重传次数为 1 的随机接入次数和所有重传的随机接入次数的总和。
S703、 基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第一随 机接入概率和第二随机接入概率, 其中, 第一随机接入概率表示前导发送次 数为 1 的随机接入概率, 第二随机接入概率表示前导重传次数为 1 的随机接 入在所有重传的随机接入中的概率;
较佳地, 基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第一 随机接入概率和第二随机接入概率的方法包括:
将前导发送次数为 1 的随机接入次数与随机接入次数的总和的商值作为 第一随机接入概率 AP(1), 即第一随机接入概率 AP(1)=前导发送次数为 1 的 随机接入次数 /随机接入次数的总和;
将前导重传次数为 1 的随机接入次数与所有重传的随机接入次数的总和 的商值作为第二随机接入概率 ΑΡ(2)/[1- ΑΡ(1)] , 即第二随机接入概率 ΑΡ(2)/[1- ΑΡ(1)]= 前导重传次数为 1的随机接入次数 /所有重传的随机接入次 数的总和;
或者,也可以先计算前导发送次数为 1的随机接入概率 ΑΡ(1)和前导发送 次数为 2的随机接入概率 ΑΡ(2), 其中 ΑΡ(2)=前导发送次数为 2的随机接入 次数 /随机接入次数的总和, 然后根据 ΑΡ(1)和 ΑΡ(2)确定第二随机接入概率 ΑΡ(2)/[1- ΑΡ(1)]。
S704、 基站根据第一随机接入概率, 调整第一随机接入功率控制参数, 根据第二随机接入概率, 调整第二随机接入功率控制参数, 其中, 第一随机 接入功率控制参数为前导初始期望接收功率, 第二随机接入功率控制参数为 功率攀升步长。
较佳地, 如图 9所示, 基站根据第一随机接入概率, 调整第一随机接入 功率控制参数, 根据第二随机接入概率, 调整第二随机接入功率控制参数的 方法包括:
S901、 判断是否满足条件 1 ;
其中, 条件 1为第一随机接入概率 >前导发送次数为 1的成功随机接入的 最大概率, 且当前的前导初始期望接收功率 >首次调整前的前导初始期望接收 功率-前导初始期望接收功率的单向调整最大次数 *前导初始期望接收功率的 调整步长;
如果满足条件 1 , 执行步骤 S902; 否则, 执行步骤 S903; 5902、 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率- 前导初始期望接收功率的调整步长;
5903、 判断是否满足条件 2;
其中, 条件 2为第一随机接入概率 <前导发送次数为 1的成功随机接入的 最小概率, 且当前的前导初始期望接收功率 <首次调整前的前导初始期望接收 功率 +前导初始期望接收功率的单向调整最大次数 *前导初始期望接收功率的 调整步长;
如果满足条件 2, 执行步骤 S804; 否则, 执行步骤 S905;
5904、 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 + 前导初始期望接收功率的调整步长;
5905、 判断是否满足条件 3;
其中, 条件 3为第二随机接入概率 >前导重传次数为 1的成功随机接入的 最大概率, 且当前的功率攀升步长>2;
如果满足条件 3 , 执行步骤 S906; 否则, 执行步骤 S907;
5906、 调整后的功率攀升步长=当前的功率攀升步长 -2;
5907、 判断是否满足条件 4;
其中, 条件 4为第二随机接入概率 <前导重传次数为 1的成功随机接入的 最小概率, 且当前的功率攀升步长<6;
如果满足条件 4, 执行步骤 S908;
S908、 调整后的功率攀升步长=当前的功率攀升步长 +2。
其中, 以下参数为基站预先设置的, 其建议的取值表 3所示;
表 3
Figure imgf000027_0001
前导重传次数为 1的成功随机接入的最大概率 95% 前导初始期望接收功率的单向调整最大次数 5
前导初始期望接收功率的调整步长 2dB 可选的, 在步骤 S704之后, 基站将携带有调整后的前导初始期望接收功 率和功率攀升步长的系统消息块 SIB消息发送给 UE, 以便 UE根据调整后的前 导初始期望接收功率和功率攀升步长, 计算随机接入前导的发射功率, 并进 行发送前导等后续过程。
通过实施例四, 可以实现基站自适应调整随机接入功率控制参数(前导 初始期望接收功率和功率攀升步长 ), 进而使得 UE可以根据调整后的随机接 入功率控制参数计算随机接入前导的发射功率,将 UE随机接入过程中的时延 控制在期望范围内。
实施例五
如图 10所示, 本发明实施例提供了一种调整随机接入功率控制参数的方 法, 该方法包括:
51001、 基站获取多个用户设备 UE上报的随机接入信息, 其中, 随机接 入信息包括前导发送次数和竟争冲突指示;
较佳地, 基站获取多个用户设备 UE上报的随机接入信息的方法包括: 基站向多个 UE发送获取随机接入信息的请求消息;
基站接收多个 UE上报的随机接入信息。
51002、 基站统计竟争冲突指示为非竟争冲突的随机接入信息; 较佳地, 基站统计竟争冲突指示为非竟争冲突的随机接入信息的方法包 括:
基站统计竟争冲突指示为非竟争冲突的随机接入信息中, 前导发送次数 为 1的随机接入次数、 随机接入次数的总和、 以及前导发送次数为 i的随机接 入次数; 其中, i的取值为大于等于 2的自然数, 且 i的最大取值为前导发送 的最大次数。 具体的, 步骤 S1002 中基站统计竟争冲突指示为非竟争冲突的随机接入 信息中, 前导发送次数为 1 的随机接入次数和随机接入次数的总和的方法与 图 5所示的方法相同, 此处不再赘述。
如图 11所示, 步骤 S1002中基站统计前导发送次数为 i的随机接入次数 的方法包括:
S1101、 针对多个 UE上报的随机接入信息, 基站逐一判断每个 UE上报 的随机接入信息;
即针对每个 UE上报的随机接入信息, 需要进行步骤 S1102至 S1106。
S1102、 判断竟争冲突指示是否为非竟争冲突;
如果是, 执行步骤 S1103; 否则, 执行步骤 S1106;
S 1103、 将随机接入次数的总和加 1;
51104、 判断前导发送次数是否为 i;
如果是, 执行步骤 S1105; 否则, 执行步骤 S1106;
51105、 将对应的前导发送次数为 i的随机接入次数加 1 ;
例如: 若判定前导发送次数为 2, 则将前导发送次数为 2的随机接入次数 加 1 ; 若判定前导发送次数为 3 , 则将前导发送次数为 3的随机接入次数加 1 ; 依次类推。
其中, 竟争冲突指示为非竟争冲突即指该 UE的竟争冲突解决成功; 随机 接入次数的总和, 以及前导发送次数为 i的随机接入次数的初始值均为 0。
51106、 判断随机接入次数的总和是否大于或等于预设门限;
其中, 门限是由基站预先设置的, 例如可以将该门限设置为 1000。
如果是, 执行步骤 S1107; 否则, 执行步骤 S1108;
51107、 停止获取 UE上报的随机接入信息, 确定截止此时的前导发送次 数为 i的随机接入次数和随机接入次数的总和, 然后, 将前导发送次数为 i的 随机接入次数以及随机接入次数的总和清零;
51108、 基站继续判断下一个 UE上报的随机接入信息;
即针对下一个 UE上报的随机接入信息, 执行步骤 S1102至 S1106, 直到 随机接入次数的总和大于或等于预设门限, 确定截止此时的前导发送次数为 i 的随机接入次数和随机接入次数的总和。
51003、基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第一随 机接入概率和前导重传随机接入时延, 其中, 第一随机接入概率表示前导发 送次数为 1的随机接入概率;
较佳地, 基站根据竟争冲突指示为非竟争冲突的随机接入信息确定第一 随机接入概率和前导重传随机接入时延的方法包括:
将前导发送次数为 1 的随机接入次数与随机接入次数的总和的商值作为 第一随机接入概率 AP(1) , 即第一随机接入概率 AP(1)=前导发送次数为 1 的 随机接入次数 /随机接入次数的总和;
将前导发送次数为 i 的随机接入次数与随机接入次数的总和的商值作为 前导发送次数为 i 的随机接入概率 AP(i) , 前导重传随机接入时延为
Figure imgf000030_0001
, 其中, AP(1)表示第一随机接入概率, 表示前导 发送次数为 i的随机接入时延。
51004、 基站根据第一随机接入概率, 调整第一随机接入功率控制参数, 根据前导重传随机接入时延, 调整第二随机接入功率控制参数, 其中, 第一 随机接入功率控制参数为前导初始期望接收功率, 第二随机接入功率控制参 数为功率攀升步长。
较佳地, 如图 12所示, 基站根据第一随机接入概率, 调整第一随机接入 功率控制参数, 根据前导重传随机接入时延, 调整第二随机接入功率控制参 数的方法包括:
S1201、 判断是否满足条件 1 ;
其中, 条件 1为第一随机接入概率 >前导发送次数为 1的成功随机接入的 最大概率, 且当前的前导初始期望接收功率 >首次调整前的前导初始期望接收 功率-前导初始期望接收功率的单向调整最大次数 *前导初始期望接收功率的 调整步长; 如果满足条件 1 , 执行步骤 S1202; 否则, 执行步骤 S1203;
51202、 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率- 前导初始期望接收功率的调整步长;
51203、 判断是否满足条件 2;
其中, 条件 2为第一随机接入概率 <前导发送次数为 1的成功随机接入的 最小概率, 且当前的前导初始期望接收功率 <首次调整前的前导初始期望接收 功率 +前导初始期望接收功率的单向调整最大次数 *前导初始期望接收功率的 调整步长;
如果满足条件 2, 执行步骤 S1204; 否则, 执行步骤 S1205;
51204、 前导重传随机接入时延 <前导重传随机接入平均时延的最小值, 且当前的功率攀升步长>2;
51205、 判断是否满足条件 3;
其中, 条件 3为第二随机接入概率 >前导重传次数为 1的成功随机接入的 最大概率, 且当前的功率攀升步长>2;
如果满足条件 3 , 执行步骤 S1206; 否则, 执行步骤 S1207;
51206、 调整后的功率攀升步长=当前的功率攀升步长 -2;
51207、 判断是否满足条件 4;
其中, 条件 4为前导重传随机接入时延 >前导重传随机接入平均时延的最 大值, 且当前的功率攀升步长<6;
如果满足条件 4, 执行步骤 S1208;
S1208、 调整后的功率攀升步长=当前的功率攀升步长 +2。
其中, 以下参数为基站预先设置的, 其建议的取值表 4所示;
表 4
Figure imgf000031_0001
前导重传随机接入平均时延的最小值 15.75ms 前导重传随机接入平均时延的最大值 34.5ms
前导初始期望接收功率的单向调整最大次数 5
前导初始期望接收功率的调整步长 2dB 可选的, 在步骤 S1104之后, 基站将携带有调整后的前导初始期望接收功 率和功率攀升步长的系统消息块 SIB消息发送给 UE, 以便 UE根据调整后的前 导初始期望接收功率和功率攀升步长, 计算随机接入前导的发射功率, 并进 行发送前导等后续过程。
通过实施例五, 可以实现基站自适应调整随机接入功率控制参数(前导 初始期望接收功率和功率攀升步长 ),进而使得 UE可以根据调整后的随机接入 功率控制参数计算随机接入前导的发射功率, 将 UE随机接入过程中的时延控 制在期望范围内。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或 计算机程序产品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实施例的形式。 而且, 本发明可釆用在一个或多个 其中包含有计算机可用程序代码的计算机可用存储介质 (包括但不限于磁盘 存储器、 CD-ROM、 光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产 品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图 和 /或方框图中的每一流程和 /或方框、 以及流程图和 /或方框图中的流程 和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器, 使得通 过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流 程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设 备以特定方式工作的计算机可读存储器中, 使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品, 该指令装置实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理, 从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图 一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步 骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了 基本创造性概念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权 利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。 脱离本发明实施例的精神和范围。 这样, 倘若本发明实施例的这些修改和变 型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些 改动和变型在内。

Claims

权 利 要 求
1、 一种调整随机接入功率控制参数的装置, 其特征在于, 包括: 随机接入信息获取单元, 用于获取多个用户设备 UE 上报的随机接入信 息, 其中, 所述随机接入信息包括前导发送次数和竟争冲突指示;
随机接入信息统计单元, 用于统计所述竟争冲突指示为非竟争冲突的所 述随机接入信息;
随机接入概率确定单元, 用于根据所述竟争冲突指示为非竟争冲突的所 述随机接入信息确定第一随机接入概率, 其中, 所述第一随机接入概率表示 前导发送次数为 1的随机接入概率;
控制参数调整单元, 用于根据所述第一随机接入概率, 调整第一随机接 入功率控制参数, 所述第一随机接入功率控制参数为前导初始期望接收功率。
2、 如权利要求 1所述的装置, 其特征在于, 所述随机接入信息统计单元 具体用于:
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取前导发 送次数为 1的随机接入次数;
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取随机接 入次数的总和;
所述随机接入概率确定单元具体用于:
将所述前导发送次数为 1 的随机接入次数与所述随机接入次数的总和的 商值作为第一随机接入概率。
3、 如权利要求 1或 2所述的装置, 其特征在于, 所述控制参数调整单元 具体用于:
当第一随机接入概率 >前导发送次数为 1的成功随机接入的最大概率, 且 当前的前导初始期望接收功率 >首次调整前的前导初始期望接收功率-前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 -前导初始期 望接收功率的调整步长; 或者,
当第一随机接入概率 <前导发送次数为 1的成功随机接入的最小概率, 且 当前的前导初始期望接收功率<首次调整前的前导初始期望接收功率 +前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 +前导初始期 望接收功率的调整步长。
4、 如权利要求 1至 3任意一项所述的装置, 其特征在于,
所述随机接入概率确定单元, 还用于根据竟争冲突指示为非竟争冲突的 所述随机接入信息确定第二随机接入概率, 所述第二随机接入概率表示前导 重传次数为 1的随机接入在所有重传的随机接入中的概率;
所述控制参数调整单元, 还用于根据所述第二随机接入概率, 调整第二 随机接入功率控制参数, 所述第二随机接入功率控制参数为功率攀升步长。
5、如权利要求 4所述的装置, 其特征在于, 所述随机接入信息统计单元, 具体用于:
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取前导重 传次数为 1的随机接入次数;
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取所有重 传的随机接入次数的总和;
所述随机接入概率确定单元, 具体用于:
将所述前导重传次数为 1 的随机接入次数与所述所有重传的随机接入次 数的总和的商值作为第二随机接入概率。
6、如权利要求 4或 5所述的装置,其特征在于, 所述控制参数调整单元, 具体用于:
当第二随机接入概率 >前导重传次数为 1的成功随机接入的最大概率, 且 当前的功率攀升步长 >2时, 调整后的功率攀升步长=当前的功率攀升步长 -2; 或者,
当第二随机接入概率 <前导重传次数为 1的成功随机接入的最小概率, 且 当前的功率攀升步长 <6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
7、 如权利要求 1至 3任意一项所述的装置, 其特征在于,
所述随机接入概率确定单元, 还用于根据竟争冲突指示为非竟争冲突的 所述随机接入信息确定前导重传随机接入时延; 所述控制参数调整单元, 还用于根据所述前导重传随机接入时延, 调整 第二随机接入功率控制参数, 所述第二随机接入功率控制参数为功率攀升步 长。
8、 如权利要求 7所述的装置, 其特征在于, 所述前导重传随机接入时延 前¾¾¾¾ ^嫩
为 ζ ΜίγΑΡ(ΐ)Ι(\-ΑΡ{ )) , 其中, ΑΡ(1)表示第一随机接入概率, AP(i)表示前 导发送次数为 i的随机接入概率, 0表示前导发送次数为 i的随机接入时延。
9、如权利要求 7或 8所述的装置,其特征在于, 所述控制参数调整单元, 具体用于:
当前导重传随机接入时延 <前导重传随机接入平均时延的最小值, 且当前 的功率攀升步长>2时,调整后的功率攀升步长=当前的功率攀升步长 -2;或者, 当前导重传随机接入时延 >前导重传随机接入平均时延的最大值, 且当前 的功率攀升步长<6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
10、 如权利要求 1至 9任意一项所述的装置, 其特征在于, 所述随机接 入信息获取单元, 具体用于:
向所述多个 UE发送获取随机接入信息的请求消息;
接收所述多个 UE上报的所述随机接入信息。
11、 一种调整随机接入功率控制参数的装置, 其特征在于, 包括: 收发器, 用于获取多个用户设备 UE上报的随机接入信息, 其中, 所述随 机接入信息包括前导发送次数和竟争冲突指示;
存储器, 用于存储所述多个 UE上报的随机接入信息;
处理器, 用于统计所述竟争冲突指示为非竟争冲突的所述随机接入信息; 根据所述竟争冲突指示为非竟争冲突的所述随机接入信息确定第一随机接入 概率, 其中, 所述第一随机接入概率表示前导发送次数为 1的随机接入概率; 根据所述第一随机接入概率, 调整第一随机接入功率控制参数, 所述第一随 机接入功率控制参数为前导初始期望接收功率。
12、 如权利要求 11所述的装置, 其特征在于, 所述处理器在统计所述竟 争冲突指示为非竟争冲突的所述随机接入信息时, 具体用于:
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取前导发 送次数为 1的随机接入次数;
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取随机接 入次数的总和;
所述处理器在根据所述竟争冲突指示为非竟争冲突的所述随机接入信息 确定第一随机接入概率时, 具体用于:
将所述前导发送次数为 1 的随机接入次数与所述随机接入次数的总和的 商值作为第一随机接入概率。
13、 如权利要求 11或 12所述的装置, 其特征在于, 所述处理器在根据 所述第一随机接入概率, 调整第一随机接入功率控制参数时, 具体用于: 当第一随机接入概率 >前导发送次数为 1的成功随机接入的最大概率, 且 当前的前导初始期望接收功率 >首次调整前的前导初始期望接收功率-前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 -前导初始期 望接收功率的调整步长; 或者,
当第一随机接入概率 <前导发送次数为 1的成功随机接入的最小概率, 且 当前的前导初始期望接收功率<首次调整前的前导初始期望接收功率 +前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 +前导初始期 望接收功率的调整步长。
14、 如权利要求 11至 13任意一项所述的装置, 其特征在于,
所述处理器, 还用于根据竟争冲突指示为非竟争冲突的所述随机接入信 息确定第二随机接入概率, 所述第二随机接入概率表示前导重传次数为 1 的 随机接入在所有重传的随机接入中的概率; 根据所述第二随机接入概率, 调 整第二随机接入功率控制参数 , 所述第二随机接入功率控制参数为功率攀升 步长。
15、 如权利要求 14所述的装置, 其特征在于, 所述处理器在统计所述竟 争冲突指示为非竟争冲突的所述随机接入信息时, 具体用于:
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取前导重 传次数为 1的随机接入次数;
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取所有重 传的随机接入次数的总和;
所述处理器在根据竟争冲突指示为非竟争冲突的所述随机接入信息确定 第二随机接入概率时, 具体用于:
将所述前导重传次数为 1 的随机接入次数与所述所有重传的随机接入次 数的总和的商值作为第二随机接入概率。
16、 如权利要求 14或 15所述的装置, 其特征在于, 所述处理器在根据 所述第二随机接入概率, 调整第二随机接入功率控制参数时, 具体用于: 当第二随机接入概率 >前导重传次数为 1的成功随机接入的最大概率, 且 当前的功率攀升步长 >2时, 调整后的功率攀升步长=当前的功率攀升步长 -2; 或者,
当第二随机接入概率 <前导重传次数为 1的成功随机接入的最小概率, 且 当前的功率攀升步长 <6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
17、 如权利要求 11至 13任意一项所述的装置, 其特征在于,
所述处理器, 还用于根据竟争冲突指示为非竟争冲突的所述随机接入信 息确定前导重传随机接入时延; 根据所述前导重传随机接入时延, 调整第二 随机接入功率控制参数, 所述第二随机接入功率控制参数为功率攀升步长。
18、 如权利要求 17所述的装置, 其特征在于, 所述前导重传随机接入时 前¾¾¾¾ ^嫩
延为 „ W - ' 其中, AP(1)表示第一随机接入概率, AP(i)表示 前导发送次数为 i的随机接入概率, 0表示前导发送次数为 i的随机接入时 延。
19、 如权利要求 17或 18所述的装置, 其特征在于, 所述处理器在根据 所述前导重传随机接入时延, 调整第二随机接入功率控制参数时, 具体用于: 当前导重传随机接入时延 <前导重传随机接入平均时延的最小值, 且当前 的功率攀升步长>2时,调整后的功率攀升步长=当前的功率攀升步长 -2;或者, 当前导重传随机接入时延 >前导重传随机接入平均时延的最大值, 且当前 的功率攀升步长<6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
20、 如权利要求 11至 19任意一项所述的装置, 其特征在于, 所述收发 器具体用于:
向所述多个 UE发送获取随机接入信息的请求消息;
接收所述多个 UE上报的所述随机接入信息。
21、 一种调整随机接入功率控制参数的方法, 其特征在于, 包括: 基站获取多个用户设备 UE上报的随机接入信息, 其中, 所述随机接入信 息包括前导发送次数和竟争冲突指示;
所述基站统计所述竟争冲突指示为非竟争冲突的所述随机接入信息; 所述基站根据所述竟争冲突指示为非竟争冲突的所述随机接入信息确定 第一随机接入概率, 其中, 所述第一随机接入概率表示前导发送次数为 1 的 随机接入概率;
所述基站根据所述第一随机接入概率, 调整第一随机接入功率控制参数, 所述第一随机接入功率控制参数为前导初始期望接收功率。
22、 如权利要求 21所述的方法, 其特征在于, 所述基站统计所述竟争冲 突指示为非竟争冲突的所述随机接入信息, 包括:
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取前导发 送次数为 1的随机接入次数; 统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取随机接 入次数的总和;
所述基站根据所述竟争冲突指示为非竟争冲突的所述随机接入信息确定 第一随机接入概率, 包括:
将所述前导发送次数为 1 的随机接入次数与所述随机接入次数的总和的 商值作为第一随机接入概率。
23、 如权利要求 21或 22所述的方法, 其特征在于, 所述基站根据所述 第一随机接入概率, 调整第一随机接入功率控制参数, 包括:
当第一随机接入概率 >前导发送次数为 1的成功随机接入的最大概率, 且 当前的前导初始期望接收功率 >首次调整前的前导初始期望接收功率-前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 -前导初始期 望接收功率的调整步长; 或者,
当第一随机接入概率 <前导发送次数为 1的成功随机接入的最小概率, 且 当前的前导初始期望接收功率<首次调整前的前导初始期望接收功率 +前导初 始期望接收功率的单向调整最大次数 *前导初始期望接收功率的调整步长时, 调整后的前导初始期望接收功率 =当前的前导初始期望接收功率 +前导初始期 望接收功率的调整步长。
24、 如权利要求 21至 23任意一项所述的方法, 其特征在于, 所述方法 还包括:
所述基站根据竟争冲突指示为非竟争冲突的所述随机接入信息确定第二 随机接入概率, 所述第二随机接入概率表示前导重传次数为 1 的随机接入在 所有重传的随机接入中的概率;
所述基站根据所述第二随机接入概率, 调整第二随机接入功率控制参数, 所述第二随机接入功率控制参数为功率攀升步长。
25、 如权利要求 24所述的方法, 其特征在于, 所述基站统计所述竟争冲 突指示为非竟争冲突的所述随机接入信息, 包括: 统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取前导重 传次数为 1的随机接入次数;
统计所述竟争冲突指示为非竟争冲突的所述随机接入信息, 获取所有重 传的随机接入次数的总和; 所述基站根据竟争冲突指示为非竟争冲突的所述随机接入信息确定第二 随机接入概率, 包括:
将所述前导重传次数为 1 的随机接入次数与所述所有重传的随机接入次 数的总和的商值作为第二随机接入概率。
26、 如权利要求 24或 25所述的方法, 其特征在于, 所述基站根据所述 第二随机接入概率, 调整第二随机接入功率控制参数, 包括:
当第二随机接入概率 >前导重传次数为 1的成功随机接入的最大概率, 且 当前的功率攀升步长 >2时, 调整后的功率攀升步长=当前的功率攀升步长 -2; 或者,
当第二随机接入概率 <前导重传次数为 1的成功随机接入的最小概率, 且 当前的功率攀升步长 <6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
27、 如权利要求 21至 23任意一项所述的方法, 其特征在于, 所述方法 还包括: 所述基站根据竟争冲突指示为非竟争冲突的所述随机接入信息确定前导 重传随机接入时延; 所述基站根据所述前导重传随机接入时延, 调整第二随机接入功率控制 参数, 所述第二随机接入功率控制参数为功率攀升步长。
28、 如权利要求 27所述的方法, 其特征在于, 所述前导重传随机接入时 前¾¾¾¾ ^嫩
延为 „ W - ' 其中, AP(1)表示第一随机接入概率, AP(i)表示 前导发送次数为 i的随机接入概率, 0表示前导发送次数为 i的随机接入时 延。
29、 如权利要求 27或 28所述的方法, 其特征在于, 所述基站根据所述 前导重传随机接入时延, 调整第二随机接入功率控制参数, 包括: 当前导重传随机接入时延 <前导重传随机接入平均时延的最小值, 且当前 的功率攀升步长>2时,调整后的功率攀升步长=当前的功率攀升步长 -2;或者, 当前导重传随机接入时延 >前导重传随机接入平均时延的最大值, 且当前 的功率攀升步长<6时, 调整后的功率攀升步长=当前的功率攀升步长 +2。
30、 如权利要求 21至 29任意一项所述的方法, 其特征在于, 所述基站 获取多个用户设备 UE上报的随机接入信息, 包括:
所述基站向所述多个 UE发送获取随机接入信息的请求消息;
所述基站接收所述多个 UE上报的所述随机接入信息。
PCT/CN2014/076607 2014-04-30 2014-04-30 一种调整随机接入功率控制参数的装置及方法 WO2015165080A1 (zh)

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