WO2010124453A1 - 优化终端随机接入的方法及装置 - Google Patents

优化终端随机接入的方法及装置 Download PDF

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Publication number
WO2010124453A1
WO2010124453A1 PCT/CN2009/071531 CN2009071531W WO2010124453A1 WO 2010124453 A1 WO2010124453 A1 WO 2010124453A1 CN 2009071531 W CN2009071531 W CN 2009071531W WO 2010124453 A1 WO2010124453 A1 WO 2010124453A1
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Prior art keywords
random access
terminal
measurement item
time
enb
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PCT/CN2009/071531
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English (en)
French (fr)
Inventor
约翰松·约翰
张宏卓
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2009/071531 priority Critical patent/WO2010124453A1/zh
Priority to CN200980123749.2A priority patent/CN102077676B/zh
Publication of WO2010124453A1 publication Critical patent/WO2010124453A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for optimizing random access of a terminal.
  • the random access procedure in LTE is divided into a competitive mode and a non-competitive mode.
  • the random access of the contention mode uses a non-dedicated Preamble (preamble), and the non-dedicated Preamble notifies the UE (User Equipment) in the cell broadcast, and randomly selects a Preamble when the UE initiates the access;
  • Non-contention mode random access uses dedicated Preamble, eNB (evolved NodeB, evolved base station) uses dedicated signaling to make these dedicated .
  • the Preamble does not conflict in the RA process of the non-contention mode, and the eNB can identify the UE according to the Preamble, and thus does not need subsequent information for collision identification. , thereby simplifying the RA process and saving access time; on the other hand, the current protocol stipulates that the UE using the dedicated Preamble does not use the Backoff mechanism, that is, in the non-contention mode RA process, if the UE is in If the dedicated Preamble used by the eNB does not find the dedicated Preamble used by the eNB, the dedicated Preamble can be used to initiate the RA again, which can also reduce the RA delay.
  • the eNB can preferentially respond to the dedicated Preamble, thereby reducing the RA delay to improve the performance of the system.
  • the Preamble available in a cell is limited.
  • the dedicated Preamble may be temporarily exhausted.
  • the UE initiates random access only the non-dedicated Preamble may be used.
  • the UE initiates the random access by using the non-dedicated Preamble there may be a case where multiple UEs send the Preamble in the same subframe. In this case, if the Preamble sent by multiple UEs is the same, the UE may be involved in the collision, resulting in the UE. The success rate of access is relatively low.
  • a measurement item is defined to measure the load condition of the random access channel, and the corresponding configuration parameters of the random access channel are optimized according to the load condition of the random access channel.
  • the measurement item is: The number of random access Preambles (preambles) received by the random access channel.
  • the method for optimizing the random access of the UE is specifically: in a certain time interval, the eNB counts the number of random access Preambles (preambles) received by the random access channel, and according to the statistics of the Preamble Number, to achieve the configuration of random access related parameters.
  • the foregoing method for optimizing the random access of the UE estimates the load of the random access channel only by the eNB measuring the number of Preambles received by the random access channel, and the measurement item cannot reflect the actual situation of the random access on the UE side, thereby causing randomness.
  • the load estimation of the access channel is inaccurate, resulting in inaccurate configuration of optimized random access related parameters, thus affecting the effect of random access optimization.
  • An embodiment of the present invention provides a method for optimizing random access of a terminal, including: receiving a random access measurement item reported by the terminal; and changing a configuration parameter of the random access according to the random access measurement item.
  • the embodiment of the present invention further provides a method for optimizing terminal access, including: the terminal statistics random access measurement item; reporting the statistical random access measurement item to the evolved base station eNB, to instruct the eNB to perform the random access measurement according to the foregoing The item optimizes the above terminal random access.
  • the embodiment of the present invention further provides a network side device for optimizing terminal access, comprising: a receiving unit, configured to receive a random access measurement item reported by the terminal; and a changing unit, configured to change the random access according to the random access measurement item Configuration parameters entered.
  • the embodiment of the present invention further provides a terminal, including: a statistics unit, configured to collect, by the terminal, a random access measurement item, and a reporting unit, configured to report the statistical random access measurement item to the evolved base station eNB, to indicate that the eNB is configured according to the eNB.
  • the above random access measurement item optimizes terminal random access.
  • the eNB reports the random access measurement item set by itself to the eNB, and the eNB estimates the load of the random access channel by analyzing the received random access measurement item, and The configuration parameters of the terminal random access are changed according to the load condition of the random access channel.
  • the random access measurement item is a random access measurement item acquired by the terminal.
  • the eNB is more aware of the load situation of the random access channel of the cell, so that the eNB estimates the random access channel load of the terminal more accurately, so that the eNB analyzes the random access measurement items sent by the received terminal,
  • the configuration parameters of the random access of the terminal are more reasonable and more accurate.
  • the terminal is in random access, the resources of the random access channel are sufficient, the collision rate of the random access is reduced, and the success of the random access of the terminal is improved. rate.
  • FIG. 1 is a flowchart of a method for optimizing random access of a terminal according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for optimizing random access of a terminal according to Embodiment 1 of the present invention
  • FIG. 3 is a block diagram of a device for optimizing a network for random access of a terminal according to Embodiment 1 of the present invention
  • FIG. 4 is a block diagram of a component of a terminal according to Embodiment 1 of the present invention.
  • FIG. 5 is a flowchart of a method for optimizing random access of a terminal according to Embodiment 2 of the present invention.
  • FIG. 6 is a distribution diagram of measurement points of random access attempts in an optimized terminal random access method according to Embodiment 2 of the present invention.
  • FIG. 7 is a block diagram of a device for optimizing a network in which a terminal randomly accesses according to an embodiment 2, 3, 4, and 5 of the present invention
  • FIG. 8 is a flowchart of a method for optimizing random access of a terminal according to Embodiment 3 of the present invention.
  • FIG. 9 is a flowchart of a method for optimizing random access of a terminal according to Embodiment 4 of the present invention.
  • FIG. 10 is a flowchart of a method for optimizing random access of a terminal according to Embodiment 5 of the present invention.
  • FIG. 11 is a schematic diagram of a random access time measurement point distribution in an optimized terminal random access method according to Embodiment 5 of the present invention.
  • An embodiment of the present invention provides a method for optimizing random access of a terminal. As shown in FIG. 1, the method includes:
  • the eNB receives the random access measurement item reported by the terminal, when receiving the random access measurement item reported by the terminal.
  • the foregoing eNB may receive only the random access measurement item on one terminal, and may also receive the random access measurement item reported by multiple terminals in a cell within a certain period of time.
  • the foregoing random access measurement item includes any one of the following parameters or a combination of any of the following parameters: random access attempt times, random access response failure times, random access competition resolution failure times, link loss
  • random access attempt times random access response failure times
  • random access competition resolution failure times random access competition resolution failure times
  • link loss The amount of data sent by the random access, the time used for the random access, the number of random access backoffs, the time taken for the random access fallback, the number of times the upper layer re-initiates the random access, and the random access reaches the maximum transmit power limit.
  • the foregoing configuration parameters include any one of the following parameters or a combination of any of the following parameters: a random access channel resource, a packet of a random access preamble, a fallback control parameter, and a power control parameter of a random access preamble.
  • the eNB may perform the analysis result of the random access measurement item sent by the one terminal, or according to the received time of a cell.
  • the embodiment of the invention provides a method for optimizing random access of a terminal, as shown in FIG. 2, the method Includes:
  • the terminal collects random access measurement items.
  • the random access measurement item includes any one of the following parameters or a combination of any of the following parameters:
  • Random access attempts random access response failures, random access resolution failures, link loss, random access data, random access time, random access backoff, random access The time taken to enter the fallback, the number of times the upper layer re-initiates random access, and the random access reaches the maximum transmit power limit.
  • the statistic of the random access measurement item is reported to the evolved station eNB to instruct the eNB to optimize the terminal random access according to the random access measurement item.
  • the terminal reports the random access measurement item to the eNB
  • the following two methods are used, but the two methods are specifically: first, the random access measurement is performed by using a radio resource control RRC message. The item is reported to the eNB.
  • the second type is used to report the random access measurement item stored in the log file to the eNB.
  • the embodiment of the present invention provides a network side device for optimizing terminal access. As shown in FIG. 3, the network side device includes: a receiving unit 31 and a changing unit 32.
  • the receiving unit 31 is configured to receive a random access measurement item reported by the terminal.
  • the receiving unit 31 may receive only the random access measurement item reported by one terminal, or may receive the random connection of multiple terminals on a terminal within a certain period of time in a cell. Enter the measurement item.
  • the foregoing random access measurement item includes any one of the following parameters or a combination of any of the following parameters: random access attempt times, random access response failure times, random access competition resolution failure times, link loss, random The amount of data sent by the access, the time taken for random access, the number of random access backoffs, the time taken for random access fallback, the number of times the upper layer re-initiates random access, and the random access reaches the maximum transmit power limit.
  • the network side device estimates, according to the random access measurement item received by the receiving unit 31, by the modifying unit 32.
  • the load condition of the random access channel; the configuration parameter of the random access of the terminal is changed, and the foregoing configuration parameter includes any one of the following parameters or a combination of any of the following parameters: a random access channel resource, a random access preamble Packet, fallback control parameters, power control parameters of the random access preamble.
  • the network side device that optimizes terminal random access in this embodiment may be located in the LTE system in the LTE system.
  • the embodiment of the present invention provides a terminal. As shown in FIG. 4, the terminal includes: a statistics unit 41 and a reporting unit 42.
  • the terminal counts random access measurement items through the statistical unit 41.
  • the random access measurement item includes any one of the following parameters or a combination of any of the following parameters: a random access attempt number, a random access response failure number, a random access competition resolution failure number, and a link loss.
  • the eNB calculates the random access measurement item to the eNB by using the upper unit 42 to instruct the eNB to optimize the terminal random access according to the random access measurement item.
  • the terminal reports the random access measurement item to the eNB the following two methods may be used, but the two methods are specifically: first, the random access measurement is performed by using a radio resource control RRC message. The item is reported to the eNB. The second type is used to report the random access measurement item stored in the log file to the eNB.
  • the technical solution of the present invention reports the random access measurement item set by the statistic to the eNB through the terminal, and the eNB estimates the load condition of the random access channel by analyzing the received random access measurement item, and according to the random connection
  • the load condition of the incoming channel changes the configuration parameters of the terminal random access.
  • the eNB Since the random access measurement item is a random access measurement item acquired by the terminal, the eNB understands the load condition of the random access channel of the cell more clearly, so that the eNB estimates the terminal random access channel load more accurately, thereby The eNB analyzes the random access measurement sent by the received terminal according to the foregoing The change of the parameters related to the random access of the terminal is more reasonable and more accurate, so that when the terminal is in random access, the resources of the access channel are sufficient, the collision rate of the access can be reduced, and the success of the random access of the terminal is improved. rate.
  • the embodiment of the present invention provides a method for optimizing random access of a terminal.
  • the configuration parameters of the random access of the terminal are generally changed to optimize the random access of the terminal, thereby reducing the random connection of the terminal.
  • the probability of collision at the time of entry increases the success rate of terminal access.
  • the foregoing configuration parameter includes any one of the following parameters or a combination of any of the following parameters: a random access channel resource, a packet of a random access preamble, a fallback control parameter, and a power control parameter of a random access preamble .
  • the embodiment of the present invention takes the initial expected receiving power of the preamble of the random access cell as an example, and specifically describes the process of optimizing the random access of the terminal. As shown in FIG. 5, the method includes:
  • the terminal collects random access measurement items; wherein the random access measurement item includes any one of the following parameters or a combination of any of the following parameters:
  • the number of random access attempts, the number of random access response failures, and the random access reached the maximum transmit power limit.
  • the number of attempts of the random access is the number of random access attempts by the terminal in a successful random access procedure, and the number of random accesses may be: the terminal preamble in a successful random access procedure.
  • the number of random access response failures is the number of random access response failures of the terminal in a successful random access procedure, wherein the random access response failure times are:
  • the terminal does not receive random during a successful random access procedure.
  • the sum of the number of access response messages and the received random access response message does not include the number of preamble identifiers sent by the terminal.
  • the number of failures of the above-mentioned random access competition resolution is that the terminal successfully resolves the number of failures in a successful random access process, wherein the number of failures in the random access process is specifically determined by the terminal in a successful random access process.
  • the competition resolves the sum of the timer timeout number and the number of times the contention information is not included in the contention resolution message.
  • the process of optimizing random access of the terminal is specifically described by using the parameter of the foregoing random access measurement item as the number of random access attempts by the terminal in a successful random access procedure.
  • the statistics of the number of random access attempts by the terminal in a successful random access procedure are as shown in FIG. 6 : random access measurement of the random access attempts of the terminal in a successful random access procedure.
  • the specific count points of the item are shown in Figure 3, A, B, and C.
  • the number of random access attempts is set to 1; at point B, if within the random access response time window, no random access corresponding message (RAR, Random Acces s Response) is received; or, received
  • the random access response message does not include the identifier of the Preamb le (preamble) that the terminal just sent, and the number of random access attempts is increased by one; at point C, if the contention resolution timer expires, or the contention resolution message is not Containing the content of the message sent by the terminal in message 3, the number of random access attempts is increased by one.
  • the statistic random access measurement item including the number of attempts is reported to the eNB, to indicate that the eNB is configured according to the terminal.
  • the random access measurement item of the random access attempt times in a successful random access procedure optimizes the terminal random access.
  • the foregoing method may be used by the terminal to report the random access measurement item to the eNB, but is not limited to the following two methods.
  • the foregoing two methods are specifically: first, the random access is performed by using a radio resource control RRC message.
  • the measurement item is reported to the eNB; secondly, the random access measurement item stored in the form of a log file is sent to the eNB by the user plane.
  • the RRC connection reconfiguration message is included in the RRC connection reconfiguration message, where the RRC connection reconfiguration message includes the random access measurement item that needs to be reported;
  • the terminal sends an RRC connection reconfiguration complete message to the eNB, where the RRC connection reconfiguration complete message includes the reported random access measurement item.
  • the eNB may receive only one random access measurement item reported by one terminal, or may receive one The above random access reported by multiple terminals in a certain period of time Measurement item. In the embodiment of the present invention, the eNB receives the random access measurement item reported by multiple terminals in a cell for a certain period of time as an example.
  • the eNB After the eNB receives the random access measurement item reported by multiple terminals in a cell for a certain period of time, the eNB calculates an average of the random access attempts received by a cell within a certain period of time, and obtains an average. The number of access attempts.
  • the eNB determines whether the average number of access attempts obtained by the average calculation exceeds a preset number of access attempts, and the preset access attempt threshold is an empirical value, which may be set according to actual conditions; If the average number of access attempts exceeds the preset access attempt threshold, step 506 is performed; otherwise, step 507 is performed.
  • the eNB determines that the average number of access attempts exceeds a preset threshold of access attempts, it indicates that the terminal needs to continuously adjust the power of sending the random access preamble after applying for random access failure, until the random access succeeds. .
  • the eNB uses the transmit power of the preamble of the cell to initially receive the received power, the eNB determines the average access attempt times when the terminal successfully upgrades the power of transmitting the preamble by continuously raising the power of the preamble.
  • the preset access attempt threshold is exceeded, the eNB increases the initial expected received power of the preamble of the foregoing cell, so that when the terminal accesses the random access, the success of the random access can be achieved within a small number of attempts.
  • the terminal can perform normal random access when randomly accessing the network, and the eNB does not need to change the initial expected received power of the preamble of the foregoing cell.
  • the process of optimizing the random access of the terminal according to the random access measurement item of the number of times the random access response fails in the successful random access process of the terminal is substantially the same as the step 501 to the step 506 in the foregoing embodiment.
  • the parameter of the random access measurement item is the number of times the random access response fails in the successful random access procedure of the terminal, and the specific counting point of the random access measurement item is shown in point B of FIG. 6;
  • no random access corresponding message (RAR, Random Acce ss Res pons e) is received; or, the received random access response message does not include the Pr eamb 1 e sent by the terminal.
  • the number of random access response failures is increased by 1; and when step 505 is performed, the eNB calculates the average Otherwise, step 507 is performed.
  • step 501 to step 506 The process of optimizing the terminal random access according to the random access measurement item of the maximum transmit power of the preamble transmitted by the terminal in a successful random access procedure is substantially the same as step 501 to step 506 in the foregoing embodiment.
  • the same is the parameter of the foregoing random access measurement item, that is, the random access of the terminal reaches the maximum transmit power limit in a random access process, and when step 505 is performed, according to the number of terminals obtained by statistics, the terminal of the above statistics is determined. If the quantity exceeds the preset number threshold, if the number of the foregoing terminals obtained by the above statistics exceeds the preset number threshold, step 506 is performed; otherwise, step 507 is performed.
  • step 503 if the eNB receives the random access measurement item reported by a terminal, in step 504, it is not required to calculate the average number of the access attempts or the number of response failures or the terminal that reaches the maximum power.
  • the quantity, the eNB compares the received access attempt times with the pre-selected attempt thresholds, and determines whether the number of attempts exceeds a preset threshold of the number of attempts, if the number of received access attempts exceeds the foregoing
  • step 506 is performed to implement optimization processing of random access of the terminal; otherwise, step 507;
  • the eNB performs the above response failure times and the pre-selected response failure thresholds.
  • Step 506 the optimization process of the terminal random access can be implemented; otherwise, step 507;
  • the eNB compares the received maximum power with a preset maximum power threshold, and determines whether the maximum power exceeds a preset power threshold. If the received maximum power exceeds the preset power threshold, Step 506 is performed to implement optimization processing of random access of the terminal; otherwise, step 507 is performed.
  • An embodiment of the present invention provides a network side device for optimizing random access of a terminal, as shown in FIG. 7 .
  • the apparatus includes: a receiving unit 71 and a changing unit 72.
  • the receiving unit 71 is configured to receive a random access measurement item reported by the terminal, where the random access measurement item includes any one of the following parameters or a combination of any one of the following parameters: a random access attempt number, a random connection The number of times the incoming response failed, and the random access reached the maximum transmit power limit.
  • the receiving unit 71 when receiving the random access measurement item sent by the terminal, may receive only the random access measurement item reported by one terminal, or may receive the random access measurement item reported by multiple terminals in one cell.
  • the network side device accessed by the optimized terminal analyzes the received random access measurement item by using the modifying unit 72, and compares the value of the random access measurement item with the predetermined The thresholds are compared to obtain a random access analysis result, and the impact of the random access channel load is determined according to the foregoing analysis result; after analyzing the influence of the random access measurement item on the random access channel, the above change is adopted.
  • the unit 72 modifies the configuration parameters of the terminal random access, where the configuration parameter is the initial expected received power of the preamble of the cell during random access.
  • the change unit 72 further includes: a calculation module 721, a determination module 722, and a change module 723.
  • the calculating module 721 is configured to: when the received parameters of the random access measurement item are: a random access attempt times performed by the terminal in a successful random access procedure; or the terminal is in a successful random access process When the random access response fails, or the terminal randomly accesses the maximum transmit power limit during a random access procedure; performs statistical average calculation on the number of times the access attempt or the number of response failures received by a cell within a certain period of time Or when the received parameter of the random access measurement item is that when the terminal randomly accesses the maximum transmission power limit in a random access procedure, the random access received by the cell within a certain period of time reaches the maximum transmission power.
  • the number of restricted terminals is configured to: when the received parameters of the random access measurement item are: a random access attempt times performed by the terminal in a successful random access procedure; or the terminal is in a successful random access process When the random access response fails, or the terminal randomly
  • the modification unit 72 determines the calculation module 721 by the determination module 722. Whether the calculated average number of access attempts exceeds a preset threshold of access attempts; if the determining module 722 determines that the average number of access attempts calculated by the calculating module 721 exceeds the preset threshold of access attempts, The above change module 723 is further configured to increase an initial expected received power of the preamble of the cell; or
  • the modifying unit 72 determines the level calculated by the calculating module 721 by the determining module 722.
  • the threshold module 723 is further configured to increase the initial expected received power of the preamble of the cell when the threshold is limited; or
  • the determining unit 72 determines, by the determining module 722, whether the number of terminals whose random access reaches the maximum transmit power limit reached by the calculating module 721 reaches a preset number threshold; if the determining module 722 determines that the calculating module 721 meets the random number When the number of terminals that reach the maximum transmit power limit exceeds a preset number threshold, the foregoing change module 723 is further configured to increase an initial expected received power of the preamble of the foregoing cell.
  • the network side device that optimizes terminal random access in this embodiment may be located in the LTE system in the LTE system.
  • the embodiment of the present invention provides a terminal. As shown in FIG. 3, the terminal includes: a statistics unit 31 and a reporting unit 32.
  • the terminal collects the random access measurement item by using the foregoing statistics unit 31; the random access measurement includes any one of the following parameters or a combination of any of the following parameters: the number of random access attempts and the random access response failure The number of times, random access reaches the maximum transmit power limit.
  • the terminal After the random access measurement item is counted, the terminal also reports the random access measurement item to the eNB by using the uplink unit 32 to instruct the eNB to optimize the terminal random access according to the random access measurement item.
  • the terminal reports the random access measurement item to the eNB the following two modes may be adopted, but the foregoing two modes are specifically: the first type, which is controlled by radio resources.
  • the message is reported to the eNB by the foregoing random access measurement item.
  • the random access measurement item stored in the form of a log file is sent to the eNB by the user plane.
  • the method includes: receiving, by the terminal, an RRC connection reconfiguration message, where the RRC connection reconfiguration message includes a random access measurement item that needs to be reported; Alternatively, the terminal sends an RRC connection reconfiguration complete message to the eNB, where the RRC connection reconfiguration complete message includes the reported random access measurement item.
  • the eNB obtains the preamble of the random access attempt according to the number of attempts of the random access attempted by the terminal, or according to the number of times the random access response fails, or the maximum transmission power limit according to the random access;
  • the power of the terminal the initial expected received power of the cell preamble; when the eNB determines that the number of times the terminal uploaded by the terminal attempts to access in a successful random access process exceeds a preset threshold of the number of attempts, or determines the terminal uploaded by the terminal.
  • a successfully randomized terminal successfully accesses the maximum transmit power limit to exceed the preset power threshold in a successful random access procedure, it is known that the power of the preamble for transmitting the random access by the terminal is relatively small, that is, the cell preamble
  • the initial expected received power is relatively small.
  • the eNB can make the power of transmitting the preamble relatively large when the terminal randomly accesses, so that the terminal has less random access during random access. Try to connect successfully, so that the terminal is constantly trying Reducing access network resources occupied, reducing the collision rate at the terminal random network, improve the success rate of random access.
  • the embodiment of the present invention provides a method for optimizing random access of a terminal.
  • the embodiment of the present invention uses a physical random access channel resource as an example to specifically describe the process of optimizing random access of the terminal. As shown in FIG. 8, the method includes :
  • the terminal collects a random access measurement item.
  • the parameter of the random access measurement item is a random access competition resolution failure number.
  • the number of failures of the random access competition resolution is that the terminal successfully resolves the number of failures in a successful random access process, wherein the random access competition fails to resolve the failure.
  • the number is: The terminal successfully resolves the sum of the timer timeout number and the number of times the contention information is not included in the contention resolution message in a successful random access procedure.
  • the terminal calculates that the terminal successfully resolves the number of failures in a successful random access procedure
  • the statistic of the random access measurement item that includes the number of failures of the contention resolution is reported to the eNB, to indicate that the eNB is configured according to the foregoing.
  • the terminal competes to solve the random access measurement item of the number of failures in a successful random access procedure to optimize terminal random access.
  • the foregoing method may be used by the foregoing terminal to report the random access measurement item to the eNB, but is not limited to the following two methods.
  • the foregoing two methods are specifically: first, the random access measurement is performed by using a radio resource control message. The item is reported to the eNB.
  • the second type is used to report the random access measurement item stored in the log file to the eNB by using a user plane.
  • the terminal When the terminal reports the random access measurement item to the eNB by using the RRC message, the terminal includes: receiving, by the terminal, an RRC connection reconfiguration message, where the RRC connection reconfiguration message includes a random access measurement item that needs to be reported; Alternatively, the terminal sends an RRC connection reconfiguration complete message to the eNB, where the RRC connection reconfiguration complete message includes the reported random access measurement item.
  • the foregoing eNB receives a random access measurement item that the terminal reported by the terminal successfully resolves the number of failures in a successful random access procedure, where the eNB receives only one terminal when receiving the random access measurement item reported by the terminal.
  • the foregoing random access measurement item of the upper layer may also receive the random access measurement item reported by multiple terminals in a cell within a certain period of time. In the embodiment of the present invention, the foregoing eNB receives the random access measurement item reported by multiple terminals in a cell for a certain period of time as an example.
  • the eNB calculates an average of the number of the above-mentioned contention failures received by the eNB in a certain period of time, and obtains an average. Competing to resolve the number of failures. 805.
  • the eNB determines whether the average number of failure resolution failures obtained by the average calculation exceeds a preset threshold of the number of failures to resolve the failure.
  • the preset threshold is an empirical value, which may be set according to actual conditions; If the number of failed failures exceeds the preset number of failure resolution failure thresholds, step 806 is performed; otherwise, step 807 is performed.
  • the eNB determines that the average number of failures of the average contention resolution exceeds a preset threshold of the number of failures of the contention resolution, indicating that the current random access channel has a relatively high load, and the terminal random access channel resource cannot meet the current terminal random access.
  • the request quantity is such that the random access of one terminal must wait for the end of other random access to compete for random access success; to ensure the success rate of terminal access and reduce the collision rate of terminal access, when the eNB determines the above average
  • the eNB increases the random access channel resources used by the cell for random access when the number of failed attempts exceeds the preset threshold for the number of failure resolution attempts.
  • the eNB does not need to adjust the random access channel resources used by the cell for random access, and ends the process of optimizing the random access of the terminal.
  • step 803 if the eNB receives the random access measurement item reported by one terminal, in step 804, the average value of the number of failure resolution failures does not need to be calculated, and the eNB will receive the above-mentioned competition.
  • the number of failures is compared with the threshold of the number of times of failure resolution of the pre-selection setting, and it can be determined whether the number of failures of the above-mentioned competition resolution exceeds the threshold of the number of failures of the predetermined competition resolution, and the number of failures of the above-mentioned received competition resolution
  • step 806 can be performed to optimize the terminal random access. Otherwise, step 807 is performed.
  • An embodiment of the present invention provides a network side device for optimizing random access of a terminal.
  • the device includes: a receiving unit 71 and a changing unit 72.
  • the receiving unit 71 is configured to receive the random access measurement item reported by the terminal, where the parameter of the random access measurement item is that the terminal successfully resolves the number of failures in a successful random access procedure, and the receiving unit 71 receives the random reported by the terminal.
  • the random access measurement item reported by one terminal may be received, or the random access measurement item reported by multiple terminals in a cell within a certain period of time may be received;
  • the above optimized terminal The access network side device counts and analyzes the received random access measurement item by the modifying unit 72, and determines the impact of the random access channel load according to the foregoing analysis result; after analyzing the random access measurement item pair After the impact of the incoming channel, the configuration parameter of the random access of the terminal is changed by the modifying unit 72, and the configuration parameter is a resource of the physical random access channel.
  • the change unit 72 further includes: a calculation module 721, a determination module 722, and a change module 723.
  • the calculating module 721 is configured to receive the foregoing time in a cell within a certain period of time. The number of times the competition is resolved is averaged, and the average number of failures is resolved.
  • the determining unit 72 determines, by the determining module 722, whether the average number of failure resolutions calculated by the calculating module 721 exceeds a preset threshold of the number of failures to resolve the failure; if the determining module 722 The determining module 723 is further configured to increase the random access channel resource used by the cell to receive the random access when the number of the average contention resolution failures calculated by the calculating module 721 exceeds the preset contention failure threshold. .
  • the network side device that optimizes terminal random access in this embodiment may be located in the LTE system in the LTE system.
  • the embodiment of the present invention provides a terminal. As shown in FIG. 3, the terminal includes: a statistics unit 31 and a reporting unit 32.
  • the terminal collects the random access measurement item by using the statistics unit 31, and the parameter of the random access measurement item is the number of failures of the random access competition resolution that the terminal performs in a successful random access process;
  • the terminal reports the random access measurement item to the eNB by using the reporting unit 32 to indicate that the eNB optimizes the terminal random access according to the random access measurement item.
  • the foregoing method may be used by the foregoing terminal to report the random access measurement item to the eNB, but is not limited to the following two methods. The foregoing two methods are specifically: first, the random access measurement is performed by using a radio resource control message. The above-mentioned eNB is reported to the eNB.
  • the second type is used to report the random access measurement item stored in the log file to the eNB.
  • the RRC connection reconfiguration message includes the RRC connection reconfiguration message, where the RRC connection reconfiguration message includes the random access measurement item that needs to be reported; or the terminal is directed to the eNB.
  • the eNB sends an RRC connection reconfiguration complete message, where the RRC connection reconfiguration complete message includes the reported random access measurement item.
  • the eNB determines the number of timeouts of the random access competition based on the random access competition performed by the terminal uploaded by the terminal in a successful random access procedure; the load condition of the random access channel is obtained; when the eNB determines that the terminal uploads
  • the number of timeouts of the random access competition resolution timer in a successful random access process exceeds the preset timeout threshold, it is known that the physical random access channel used by the cell for random access has a relatively high load.
  • the random access of one terminal is required to complete the random access after the other random access successfully transmits the data, so that the terminal tries to access continuously when the terminal randomly accesses, and too many unsuccessful random accesses
  • the request will increase the collision rate of the random access, so that the success rate of the terminal access is also reduced. Therefore, when the eNB determines that the terminal uploaded by the terminal is in a successful random access procedure, the random access competition resolution timer is performed. When the number of timeouts exceeds the preset timeout threshold, the physical random access signal used by the cell to receive random access is increased. Resources, so that the terminal is used by enough random access channels during random access, which avoids many terminals competing for the same random access channel with higher load, improves the utilization of network resources, and reduces random access. The incoming collision rate improves the success rate of random access.
  • the embodiment of the present invention provides a method for optimizing random access of a terminal.
  • the embodiment of the present invention uses a packet of a random access preamble as an example to specifically describe a process of optimizing random access of a terminal. As shown in FIG. 9, the method includes :
  • the terminal collects random access measurement items.
  • the foregoing random access measurement item includes any one of the following parameters or a combination of any one of the following parameters: link loss, data quantity sent by random access.
  • the link loss is the downlink loss calculated by the physical layer of the terminal side; the amount of data sent by the random access is the amount of data randomly sent by the terminal during a random access process,
  • the amount of data sent by random access is specifically as follows:
  • the terminal is randomly connected at one time.
  • the amount of data contained in the third message sent during the process; or the size of the third message sent by the terminal during a random access process, and the third message is the resource allocated by the terminal using the eNB in the shared channel.
  • Send a resource request (Ms g 3 ).
  • the present invention implements the process of optimizing the random access of the terminal by taking the downlink loss of the open-loop power control calculated by the parameter of the random access measurement item as the physical layer of the terminal side as an example.
  • the statistic random access measurement item including the downlink loss is reported to the eNB, to indicate that the eNB is configured according to the eNB.
  • the above-mentioned downlink loss random access measurement item optimizes terminal random access.
  • the foregoing method may be used by the foregoing terminal to report the random access measurement item to the eNB, but is not limited to the following two methods.
  • the foregoing two methods are specifically: first, the random access measurement is performed by using a radio resource control message. The item is reported to the eNB.
  • the second type is used to report the random access measurement item stored in the log file to the eNB by using a user plane.
  • the RRC connection reconfiguration message is included in the RRC connection reconfiguration message, where the RRC connection reconfiguration message includes the random access measurement item that needs to be reported; or
  • the terminal sends an RRC connection reconfiguration complete message to the eNB, where the RRC connection reconfiguration complete message includes the reported random access measurement item.
  • the eNB receives the downlink loss random access measurement item reported by the terminal, and obtains, according to the received downlink loss, a network condition of a packet where the preamble selected by the terminal is located; when the received open loop power is received.
  • the loss threshold is an empirical value, which can be set according to the actual situation; indicating that the current wireless condition of the terminal is relatively poor, and the transmitted data resource exceeds a preset resource size threshold.
  • the selected group B preamble in the cell preamble packet, so when the eNB determines that the downlink loss reported by the receiving terminal exceeds a predetermined loss threshold, step 904 is performed; otherwise, step 905 is performed.
  • the eNB adjusts the preamble packet of the cell, and adjusts and adjusts The size of the amount of data sent by the terminal corresponding to the preamble packet.
  • the eNB does not need to adjust the foregoing preamble packet, and does not need to adjust the size of the data amount sent by the terminal corresponding to the preamble packet.
  • the embodiment of the present invention provides a network side device for optimizing random access of a terminal.
  • the device includes: a receiving unit 21 and a changing unit 22.
  • the receiving unit 21 is configured to receive the random access measurement item reported by the terminal, where the random access measurement item includes: a downlink loss calculated by the physical layer of the terminal side for open loop power control, or a terminal random access The amount of data sent during the process.
  • the network side device accessed by the optimized terminal analyzes the received random access measurement item by using the modifying unit 22, and determines the grouping condition of the cell preamble according to the analysis result.
  • the modifying unit 22 After analyzing the impact of the packet preamble of the cell preamble on the random access, the modifying unit 22 is used to adjust the packet of the preamble used by the cell for random access, and correspondingly adjust corresponding to the preamble packet. The amount of data sent by the terminal.
  • the network side device that optimizes terminal random access in this embodiment may be located in the LTE system in the LTE system.
  • the embodiment of the present invention provides a terminal. As shown in FIG. 3, the terminal includes: a statistics unit 31 and a reporting unit 32.
  • the terminal calculates the random access measurement item for the downlink loss of the open loop power control calculated by the physical layer at the terminal side by using the foregoing statistical unit 31, or the size of the data amount sent by the terminal in the process of one random access, or the terminal.
  • the random access measurement item combined with the downlink loss of the open loop power control calculated by the side physical layer and the amount of data transmitted by the terminal in the process of one random access.
  • the terminal reports the random access measurement item to the eNB by using the foregoing upper unit 32 to instruct the eNB to optimize the terminal random access according to the random access measurement item.
  • the foregoing two methods are specifically: the first method, the foregoing random access measurement item is reported to the eNB by using a RRC message; the second type is stored as a log file by the user plane.
  • the above-mentioned eNB is given to the above eNB on the form of the random access measurement item.
  • the RRC connection reconfiguration message includes the RRC connection reconfiguration message, where the RRC connection reconfiguration message includes the random access measurement item that needs to be reported, or the RRC connection reconfiguration message is received by the radio resource control RRC message.
  • the terminal sends an RRC connection reconfiguration complete message to the eNB, where the RRC connection reconfiguration complete message includes the reported random access measurement item.
  • the downlink loss used by the eNB for open loop power control calculated by the physical layer of the terminal side uploaded by the terminal; or the amount of data sent by the terminal in a random access process;
  • the packet of the preamble is obtained by the eNB according to the received random access measurement item, and the packet of the current cell random access preamble is unreasonable, resulting in a relatively large loss of the random access downlink, thereby making the random access channel
  • the load is relatively high, or the random access channel is occupied for a long time due to the relatively large number of transmission data resources, resulting in an increase in the collision rate of the random access; therefore, the loss of the downlink received by the eNB is relatively high or the terminal transmits.
  • the random access preambles are re-grouped, and the size of the foregoing resources sent by the terminal is adjusted accordingly.
  • the embodiment of the present invention provides a method for optimizing random access of a terminal.
  • the embodiment of the present invention uses a configuration of changing the back-off random access as an example to specifically describe a process for optimizing random access of a terminal, as shown in FIG. 10, the method Includes:
  • the terminal collects random access measurement items; wherein the random access measurement item includes any one of the following parameters or a combination of any of the following parameters:
  • the time used by the random access is the time used by the terminal in a random access procedure; the random access backoff number is the number of times the terminal retreats in a random access procedure; the backoff time is the terminal once The time taken to roll back during random access.
  • a random access measurement item used by a terminal in a random access procedure is taken as an example to specifically describe a process of optimizing terminal random access.
  • the statistics of the time used by the terminal in a random access process are as shown in FIG. 19:
  • the specific measurement start point and the measurement end point are point A and point Bl and point B2 in FIG. 11, respectively.
  • the timing starts.
  • the UE successfully receives the random access response message the random access procedure is considered successful.
  • the timing is ended, and the obtained time is the random access time of the dedicated Preamb le;
  • the time is ended, and the time obtained is based on the competition. Random access time.
  • 1002 After the time used by the terminal in a random access process, report the random access measurement item including the time used by the terminal in a random access procedure to the eNB, to indicate that the eNB is configured according to the terminal.
  • the random access measurement item used in the time of a random access procedure optimizes the terminal random access.
  • the foregoing method may be used by the foregoing terminal to report the random access measurement item to the eNB, but is not limited to the following two methods.
  • the foregoing two methods are specifically: first, the random access measurement is performed by using a radio resource control message. The item is reported to the eNB.
  • the second type is used to report the random access measurement item stored in the log file to the eNB by using a user plane.
  • the RRC connection reconfiguration message is included in the RRC connection reconfiguration message, where the RRC connection reconfiguration message includes the random access measurement item that needs to be reported; or
  • the terminal sends an RRC connection reconfiguration complete message to the eNB, where the RRC connection reconfiguration complete message includes the reported random access measurement item.
  • the eNB receives the random access measurement item used by the terminal in a random access process, and receives the random access measurement item reported by the terminal when receiving the random measurement item reported by the terminal.
  • the foregoing random access measurement items reported by a plurality of terminals in a certain period of time may also be received.
  • the foregoing eNB receives the random access measurement item reported by multiple terminals in a cell as an example for specific description. 1004.
  • the eNB After receiving the random access measurement item reported by the multiple terminals in the foregoing one time period, the eNB performs an average calculation on the time used by the terminal for the random access in the time received by the foregoing one cell. And get the average time used for random access.
  • the eNB determines whether the average time used by the random access exceeds a preset time threshold for random access, and the time threshold used by the preset random access is an empirical value, which may be set according to an actual situation; If the average time used for access exceeds the preset flat time threshold used by the random access, step 1006 is performed; otherwise, step 1007 is performed.
  • the eNB determines that the average time used by the random access procedure exceeds a time threshold used by the preset random access procedure, indicating that the terminal successfully completes the random access for a long time, the terminal must continuously apply for random access within the foregoing time. In, until the terminal random access is successful. In order to shorten the time of random access, the timing clock is reduced to be smaller; or the back-off timing clock is reduced; or the physical random access channel resource is added.
  • the eNB does not need to reduce the backoff timing clock or compete to solve the timing clock reduction; or increase physical random access channel resources.
  • the process of optimizing the terminal access according to the random access measurement item used by the terminal in the process of the rollback in the random access process is basically the same as the step 1001 to the step 1006 in the foregoing embodiment, but only the random connection.
  • the parameter of the incoming measurement item is the time taken by the terminal to roll back in a random access procedure, and the random access measurement item can pass the two measurement points of A and B in FIG. 11 when the condition of the random access backoff number is satisfied.
  • step 1005 determining whether the average time used for the random access rollback exceeds a preset random connection according to the calculated average time for the random access fallback If the average time taken for the random access rollback exceeds the preset time threshold for random access fallback, step 1006 is performed; otherwise, step 1007 is performed.
  • the step is the same as the step 1001 to the step 1006 in the foregoing embodiment, except that the random access measurement item of the number of times the terminal retreats in the random access process is optimized.
  • the parameter of the measurement item is the number of times the terminal retreats during a random access process. For the specific measurement point, see point A and point B in Figure 11.
  • the random access response time window does not receive the random access corresponding message (RAR, Random Acces s Response); or, receive The random access response message does not include the identifier of the Preamb le sent by the UE, and the number of backoffs is increased by one; at point B, if the contention resolution timer expires, or the contention resolution message does not include The content of the message sent by the UE in message 3 is incremented by one.
  • the step 1005 determining whether the average number of back-offs exceeds a preset threshold of the number of back-offs according to the calculated average number of back-offs. If the average number of back-offs exceeds a preset threshold of the number of back-offs, the step is performed. 1006, otherwise step 1007 is performed.
  • step 1003 if the eNB receives the random access measurement item reported by the terminal, in step 1 004, the time used for the random access or the time or back of the random access is not required to be calculated.
  • the average value of the number of times of random access is compared, and the eNB compares the time used for the random access received with the time threshold used for the pre-selected random access, and can determine whether the time used for the random access exceeds a preset time.
  • the time threshold for the random access if the time taken for the random access received exceeds the preset time threshold for random access, step 1006 can be used to optimize the random access of the terminal; otherwise, step 1007 is performed; Or
  • the eNB compares the time taken to receive the random access rollback with the preset time threshold for the random access fallback, and then determines whether the time used for the random access rollback exceeds the preset random access back. If the time limit for the random access rollback exceeds the preset time threshold for random access rollback, step 1 006 can be used to optimize the terminal random access; otherwise, step 1 is performed. 007 ; or
  • the eNB compares the received random access backoff number with a preset backoff threshold, and determines whether the random access backoff exceeds a preset backoff threshold, if the random access is backed off. When the number of times exceeds the threshold of the preset number of retreats, step 106 is performed to optimize the random access of the terminal. Otherwise, step 007 is performed.
  • An embodiment of the present invention provides a network side device for optimizing random access of a terminal.
  • the device includes: a receiving unit 71 and a changing unit 72.
  • the receiving unit 71 is configured to receive a random access measurement item reported by the terminal, where the random access measurement item includes any one of the following parameters or a combination of any one of the following parameters: a time used in the random access process, and a random connection The number of retractions and the time taken for random access to fall back.
  • the time used by the random access is the time used by the terminal in a random access procedure; the random access backoff number is the number of times the terminal retreats in a random access procedure; the backoff time is the terminal once The time taken to roll back during random access.
  • the receiving unit 71 may receive only the random access measurement item on one terminal, or may receive the random access measurement item reported by multiple terminals in a cell within a certain period of time. .
  • the network side device accessed by the optimized terminal After receiving the random access measurement item sent by the terminal, the network side device accessed by the optimized terminal analyzes the received random access measurement item by using the modifying unit 72, and determines the load of the random access channel according to the analysis result. After the impact of the random access measurement item on the random access channel is analyzed, the configuration parameter of the random access of the terminal is changed by the foregoing modifying unit 72, and the configuration parameter is generally when the terminal randomly accesses the network. Control parameter configuration.
  • the change unit 72 further includes: a calculation module 721, a determination module 722, and a change module 723.
  • the calculating module 721 is configured to perform an average calculation on the time used by the random access received by the cell within a certain period of time. Obtaining an average time for the random access; after obtaining the average time for the random access, the modifying unit 72 determines, by the determining module 722, whether the average time used by the calculating module 721 to calculate the obtained random access is The time threshold used by the preset random access is exceeded.
  • the foregoing modifying module 723 is further configured to: Decrease the clock, or reduce the back-off timing clock, or increase the random access channel resources; or
  • the foregoing calculation module 721 is configured to: when the received random access measurement item is used by the terminal in a random access procedure, and is received in a certain period of time; The time taken for the random access fallback is averaged, and the average time taken for the random access fallback is obtained. After the average time taken for the random access fallback is obtained, the changing unit 72 determines the above calculation by the determining module 722.
  • the module 721 calculates whether the average time taken for the random access rollback exceeds the preset time threshold for the random access fallback; when the determining module 722 determines that the average time for the random access rollback exceeds the pre
  • the foregoing change module 723 is further configured to reduce the resolution timing clock, or reduce the backoff timing clock, or increase the random access channel resource; or
  • the calculating module 721 is configured to perform an average calculation on the number of random access backoffs received within a certain period of time in a cell. Obtaining the average number of backoffs of the random access; after obtaining the average number of backoffs of the random access, the determining unit 72 determines whether the average number of backoffs calculated by the calculating module 721 exceeds the preset back by the determining module 722.
  • the threshold module 722 determines that the average number of back-offs exceeds a preset threshold of the number of back-offs, and the change module 723 is further configured to reduce the clock of the resolution clock, or to reduce the clock of the back-off clock, or Increase the random access channel resources.
  • the network side device that optimizes terminal random access in this embodiment may be located in the LTE system in the LTE system.
  • the embodiment of the present invention provides a terminal. As shown in FIG. 3, the terminal includes: a statistics unit 31 and a reporting unit 32.
  • the terminal collects the random access measurement item by using the foregoing statistics unit 31.
  • the random access measurement item includes any one of the following parameters or a combination of any of the following parameters: time used in the random access process, random access back The number of retreats and the time taken for random access to fall back.
  • the time taken by the random access is the time used by the terminal in a random access procedure
  • the random access backoff is the number of times the terminal retreats in a random access procedure
  • the backoff time is the terminal The time taken to roll back during a random access procedure.
  • the terminal is also reported to the eNB by using the above-mentioned upper access unit 32 to indicate that the eNB optimizes the terminal according to the random access measurement item.
  • the foregoing method may be used by the foregoing terminal to report the random access measurement item to the eNB, but is not limited to the following two methods.
  • the foregoing two methods are specifically: first, the random access measurement is performed by using a radio resource control message.
  • the above-mentioned eNB is reported to the eNB.
  • the second type is used to report the random access measurement item stored in the log file to the eNB.
  • the RRC connection reconfiguration message is included in the RRC connection reconfiguration message, where the RRC connection reconfiguration message includes the random access measurement item that needs to be reported; or
  • the terminal sends an RRC connection reconfiguration complete message to the eNB, where the RRC connection reconfiguration complete message includes the reported random access measurement item.
  • Time optimize for random access.
  • the eNB detects that the random access time of the terminal exceeds the preset time threshold it is known that the load of the random access channel is relatively large when the network is busy, and the collision rate of the random access is relatively high; when the eNB detects the terminal once When the random access time exceeds the preset time threshold, the timing clock is reduced or the back-off timing clock is reduced, so that the random access time on the random access channel is shorter, and the randomization is accelerated.
  • the processing speed of the access is longer than that of the random access, which ensures the random access channel's ability to handle random access and reduces the random access collision rate.
  • the eNB detects the terminal's random access time
  • the time limit of the physical random access channel is increased, the resources of the physical random access channel are increased.
  • sufficient channel resources are ensured, and multiple random access requests are avoided due to random access channel resources. Insufficient, and the situation of competing for the same random access channel reduces the collision rate of random access to a certain extent, and further Into the high power of the random access.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. .
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • a hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

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Description

优化终端随机接入的方法及装置 技术领域
本发明涉及通信领域, 尤其涉及优化终端随机接入的方法及装置。
背景技术
LTE (Long Term Evolution, 长期演进) 中的随机接入过程分为竟争模 式与非竟争模式。 竟争模式的随机接入使用非专用的 Preamble (前导码), 这 些非专用的 Preamble会在小区广播中通知 UE ( User Equipment, 用户设备), UE发起接入时, 随机的选择一个 Preamble; 而非竟争模式的随机接入使用专 用的 Preamble, eNB (evolved NodeB,演进基站)使用专用信令将这些专用
Figure imgf000003_0001
。 与竟争模式的 RA (Random Access, 随机接入)过程相比, 非竟争模式的 RA过程中 Preamble不会冲突, 而且 eNB能够根据 Preamble识别 UE, 也就不 需要后续的信息来进行冲突识别, 从而简化了 RA流程, 节省了接入时间; 另 一方面,现行协议规定使用专用 Preamble的 UE不使用 Backoff (回退)机制, 也就是说, 非竟争模式的 RA过程中, UE如果在 eNB返回的接入请求应答信息 中没有发现自己使用的专用 Preamble,则可以立即使用这个专用 Preamble再 次发起 RA, 这样也可以减小 RA时延。 所以在网络繁忙的情况下, eNB可以优 先响应专用 Preamble, 从而减小 RA时延来提高系统的性能。但是一个小区内 可用的 Preamble 是有限的, 当网络繁忙, 或由于其它原因, 可能发生专用 Preamble暂时用完的情况,UE发起随机接入时,只能采用非专用的 Preamble。 当 UE使用非专用的 Preamble发起随机接入时, 可能存在多个 UE在同一个子 帧发送 Preamble的情况, 这时, 如果有多个 UE发送的 Preamble相同, 就可 能发生 UE计入冲突, 导致 UE接入的成功率比较低。
因此, 为了降低随机接入的冲突概率, 提高随机接入的成功率,从而进一 步提高系统的性能, 提出了随机接入优化的的课题。 现有技术中通过在 eNB 内定义一个测量项来衡量随机接入信道的负载状况, 并根据所述随机接入信 道的负载状况,对随机接入信道的相应配置参数进行优化。 该测量项为: 随机 接入信道接收到的随机接入 Preamble (前导码)的个数。所述对 UE随机接入优 化的方法具体为: 在一定的时间间隔内, eNB统计随机接入信道接收到的随机 接入 Preamble (前导码)的个数, 并根据所述统计的 Preamble的个数, 来实现 随机接入相关参数的配置。
上述优化 UE 随机接入的方法, 仅仅通过 eNB 测量随机接入信道收到的 Preamble个数, 来估计随机接入信道的负载,该测量项无法体现 UE侧随机接 入的实际情况, 从而造成随机接入信道的负载估计不准确, 导致优化随机接 入相关参数的配置不准确, 从而影响随机接入优化的效果。
发明内容
本发明的实施例提供一种优化终端随机接入的方法, 包括: 接收终端上 报的随机接入测量项; 根据上述随机接入测量项更改随机接入的配置参数。 本发明的实施例还提供一种优化终端接入的方法, 包括: 终端统计随机 接入测量项; 将统计的上述随机接入测量项上报给演进基站 eNB, 以指示 eNB 根据上述随机接入测量项优化上述终端随机接入。 本发明的实施例还提供一种优化终端接入的网络侧装置, 包括: 接收单 元, 用于接收终端上报的随机接入测量项; 更改单元, 用于根据上述随机接 入测量项更改随机接入的配置参数。
本发明的实施例还提供一种终端, 包括: 统计单元, 用于终端统计随机 接入测量项; 上报单元, 用于将统计的上述随机接入测量项上报给演进基站 eNB, 以指示 eNB根据上述随机接入测量项优化终端随机接入。 本发明实施例提供的技术方案, 通过终端将统计的自身设置的随机接入 测量项上报给 eNB, 上述 eNB通过分析接收到的上述随机接入测量项,估计随 机接入信道的负载情况, 并根据上述随机接入信道的负载情况更改终端随机 接入的配置参数。 由于上述随机接入测量项是终端获取的随机接入测量项, 使 eNB对小区的随机接入信道的负载情况了解的更清楚, 使 eNB对终端随机 接入信道负载估计的更准确, 从而使 eNB根据分析上述接收到的终端发送的 随机接入测量项, 对终端随机接入的配置参数的更改更合理并且更准确, 使 终端在随机接入时, 随机接入信道的资源充足, 减小了随机接入的冲突率, 进而提高了终端随机接入的成功率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例 1优化终端随机接入的方法流程图;
图 2为本发明实施例 1优化终端随机接入的方法流程图;
图 3为本发明实施例 1优化终端随机接入的网络则装置组成框图; 图 4为本发明实施例 1终端的组成框图;
图 5为本发明实施例 2优化终端随机接入的方法流程图;
图 6为本发明实施例 2优化终端随机接入方法中的随机接入尝试次数的 测量点分布图;
图 7为本发明实施例 2、 3、 4、 5优化终端随机接入的网络则装置组成框 图;
图 8为本发明实施例 3优化终端随机接入的方法流程图;
图 9为本发明实施例 4优化终端随机接入的方法流程图;
图 10为本发明实施例 5优化终端随机接入的方法流程图;
图 11为本发明实施例 5优化终端随机接入方法中的一次随机接入时间测 量点分布图。
具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作 出创造性劳动前提下所获得的所有其他实施例 , 都属于本发明保护的范围。
实施例 1
本发明实施例提供一种优化终端随机接入的方法, 如图 1 所示, 该方法 包括:
101、 eNB接收终端上报的随机接入测量项, 在接收终端上报的上述随机 接入测量项时。
具体实现过程中, 上述 eNB可以只接收一个终端上 ^艮的上述随机接入测 量项, 也可以接收一个小区一定时间内的多个终端上报的上述随机接入测量 项。 上述随机接入测量项包括以下参数中的任意一项或者以下参数中任意项 之间的组合: 随机接入尝试次数、 随机接入响应失败次数、 随机接入竟争解 决失败次数、 链路损耗、 随机接入发送的数据量、 随机接入所用的时间、 随 机接入回退次数、 随机接入回退所用的时间、 高层重新发起随机接入的次数、 随机接入达到最大发射功率限制。
102、 在接收到上述随机接入测量项后, 根据接收到的上述随机接入测量 项更改随机接入的配置参数。
上述配置参数包括以下参数中的任意一项或者以下参数中任意项的组 合: 随机接入信道资源、 随机接入前导码的分组、 回退控制参数、 随机接入 前导码的功率控制参数。
上述 eNB根据接收到的上述随机接入测量项更改随机接入的配置参数时, eNB可以根据接收到的上述一个终端发送的随机接入测量项的分析结果,或者 根据接收到的一个小区一定时间内的多个上述随机接入测量项计算出的平均 值的分析结果, 更改随机接入的配置参数, 使终端随机接入的配置参数得到 合理的配置, 以便使终端在进行随机接入时, 能够减少冲突概率。
本发明实施例提供一种优化终端随机接入的方法, 如图 2 所示, 该方法 包括:
201、 终端统计随机接入测量项。 其中, 上述随机接入测量项包括以下参 数中的任意一项或者以下参数中任意项之间的组合:
随机接入尝试次数、 随机接入响应失败次数、 随机接入竟争解决失败次 数、 链路损耗、 随机接入发送的数据量、 随机接入所用的时间、 随机接入回 退次数、 随机接入回退所用的时间、 高层重新发起随机接入的次数、 随机接 入达到最大发射功率限制。
202、 在该终端将上述随机接入测量项统计好后, 将统计的上述随机接入 测量项上报给演进站 eNB ,以指示 eNB根据上述随机接入测量项优化终端随机 接入。
其中, 该终端将上述随机接入测量项上报给 eNB 时, 可以采用但不局限 于以下两种方式, 上述两种方式具体为:第一种, 通过无线资源控制 RRC消息 将上述随机接入测量项上报给 eNB; 第二种, 通过用户面将存储成日志文件形 式的上述随机接入测量项上报给 eNB。 本发明实施例提供一种优化终端接入的网络侧装置, 如图 3 所示, 该网 络侧装置包括: 接收单元 31和更改单元 32。
接收单元 31用于接收终端上报的随机接入测量项。 上述接收单元 31在 接收上述终端上报的随机接入测量项时, 可以只接收一个终端上报的上述随 机接入测量项, 也可以接收一个小区一定时间内的多个终端上 4艮的上述随机 接入测量项。 上述随机接入测量项包括以下参数中的任意一项或者以下参数 中任意项的组合: 随机接入尝试次数、 随机接入响应失败次数、 随机接入竟 争解决失败次数、 链路损耗、 随机接入发送的数据量、 随机接入所用的时间、 随机接入回退次数、 随机接入回退所用的时间、 高层重新发起随机接入的次 数、 随机接入达到最大发射功率限制。
在上述接收单元 31接收到该终端发送的随机接入测量项后, 所述网络侧 装置通过更改单元 32根据上述接收单元 31接收到的随机接入测量项, 估计 随机接入信道的负载情况; 对终端随机接入的配置参数进行更改, 上述配置 参数包括以下参数中的任意一项或者以下参数中任意项的组合: 随机接入信 道资源、 随机接入前导码的分组、 回退控制参数、 随机接入前导码的功率控 制参数。
本实施实例中的优化终端随机接入的网络侧装置在 LTE 系统中可位于演 进基站 eNB。
本发明实施例提供一种终端, 如图 4所示, 该终端包括: 统计单元 41和 上报单元 42。
终端通过统计单元 41统计随机接入测量项。 其中, 上述随机接入测量项 包括以下参数中的任意一项或者以下参数中任意项的组合: 随机接入尝试次 数、 随机接入响应失败次数、 随机接入竟争解决失败次数、 链路损耗、 随机 接入发送的数据量、 随机接入所用的时间、 随机接入回退次数、 随机接入回 退所用的时间、 高层重新发起随机接入的次数、 随机接入达到最大发射功率 限制。
在该终端统计完上述随机接入测量项后, 通过上 单元 42将统计的上述 随机接入测量项上报给 eNB ,以指示 eNB根据上述随机接入测量项优化终端随 机接入。 其中, 该终端将上述随机接入测量项上报给 eNB 时, 可以采用但不 局限于以下两种方式, 上述两种方式具体为:第一种, 通过无线资源控制 RRC 消息将上述随机接入测量项上报给 eNB; 第二种, 通过用户面将存储成日志文 件形式的上述随机接入测量项上报给 eNB。
本发明技术方案, 通过终端将统计的自身设置的随机接入测量项上报给 eNB , 上述 eNB通过分析接收到的上述随机接入测量项, 估计随机接入信道的 负载情况, 并根据上述随机接入信道的负载情况更改终端随机接入的配置参 数。 由于上述随机接入测量项是终端获取的随机接入测量项, 使 eNB对小区 的随机接入信道的负载情况了解的更清楚, 使 eNB对终端随机接入信道负载 估计的更准确, 从而使 eNB根据分析上述接收到的终端发送的随机接入测量 项, 对终端随机接入的相关参数的更改更合理并且更准确, 使终端在随机接 入时, 接入信道的资源充足, 可以减少接入的冲突率, 进而提高了终端随机 接入的成功率。
实施例 2
本发明实施例提供一种优化终端随机接入的方法, 在优化终端随机接入 的过程中, 一般通过更改终端随机接入的配置参数来实现终端随机接入的优 化, 进而减小终端随机接入时的冲突概率, 提高终端接入的成功率。 其中, 上述配置参数包括以下参数中的任意一项或者以下参数中任意项的组合: 随 机接入信道资源、 随机接入前导码的分组、 回退控制参数、 随机接入前导码 的功率控制参数。 本发明实施例以更改随机接入小区的前导码的初始期望接 收功率为例, 具体说明优化终端随机接入的过程, 如图 5所示, 该方法包括:
501、 终端统计随机接入测量项; 其中上述随机接入测量项包括以下参数 中的任意一项或者以下参数中任意项之间的组合:
随机接入的尝试次数、 随机接入响应失败的次数、 随机接入达到最大发 射功率限制。 其中, 上述随机接入的尝试次数为终端在一次成功的随机接入 过程中随机接入的尝试次数, 并且上述随机接入次数具体可以为: 终端在一 次成功的随机接入过程中前导码的发送尝试次数; 或者终端在一次成功的随 机接入过程中前导码初始接收功率的攀升次数。
上述随机接入响应失败次数为终端在一次成功的随机接入过程中随机接 入响应失败次数, 其中上述随机接入响应失败次数具体为: 终端在一次成功 的随机接入过程中没有收到随机接入响应消息的次数与接收到的上述随机接 入响应消息内不包括上述终端所发送的前导码标识的次数之和。
上述随机接入竟争解决失败次数为终端在一次成功的随机接入过程中竟 争解决失败次数, 其中上述随机接入过程中竟争解决失败次数具体为终端在 一次成功的随机接入过程中竟争解决定时器超时次数与竟争解决消息内不包 含有终端发送的资源请求信息的次数之和。 本实施例以上述随机接入测量项的参数为终端在一次成功的随机接入过 程中随机接入的尝试次数为例具体说明优化终端随机接入的过程。
其中, 终端在一次成功的随机接入过程中随机接入的尝试次数的统计具 体为如图 6 所示: 该终端在一次成功的随机接入过程中随机接入的尝试次数 的随机接入测量项的具体计数点见图 6的 A, B, C三点。
在 A点, 设置随机接入尝试次数为 1 ; 在 B点, 如果在随机接入响应时间 窗内, 没有收到随机接入相应消息(RAR, Random Acces s Res ponse) ; 或者, 接 收到的随机接入响应消息内不包括终端刚才所发送的 Preamb l e (前导码) 的 标识, 则随机接入尝试次数加 1 ; 在 C点, 如果竟争解决定时器超时, 或者竟 争解决消息内不包含有终端在消息 3 所发送的消息内容, 则随机接入尝试次 数加 1。
502、 在该终端统计好上述终端在一次成功的随机接入过程中随机接入的 尝试次数后, 将统计的包含上述尝试次数的随机接入测量项上报给 eNB , 以指 示该 eNB根据上述终端在一次成功的随机接入过程中随机接入的尝试次数的 随机接入测量项优化终端随机接入。
其中, 上述终端将上述随机接入测量项上报给上述 eNB 时, 可以采用但 不局限于以下两种方式,上述两种方式具体为:第一种,通过无线资源控制 RRC 消息将上述随机接入测量项上报给上述 eNB; 第二种, 通过用户面将存储成日 志文件形式的上述随机接入测量项上 给上述 eNB。 其中, 通过无线资源控制 RRC消息将所述随机接入测量项上报给上述 eNB, 包括:所述终端接收 RRC连 接重配置消息,该 RRC连接重配置消息中包含需要上报的随机接入测量项; 或 者, 上述终端向上述 eNB发送 RRC连接重配置完成消息, 该 RRC连接重配置 完成消息中包含上报的随机接入测量项。
503、 eNB接收上述终端上报的终端在一次成功的随机接入过程中随机接 入的尝试次数的随机接入测量项时, 可以只接收一个终端上报的上述随机接 入测量项, 也可以接收一个小区一定时间内的多个终端上报的上述随机接入 测量项。 本发明实施例中以 eNB接收一个小区一定时间内的多个终端上报的 上述随机接入测量项为例具体说明。
504、 在 eNB接收到一个小区一定时间内的多个终端上报的上述随机接入 测量项后, 该 eNB统计上对一个小区一定时间内接收到的上述随机接入尝试 次数进行平均计算, 获得平均接入尝试次数。
505、 该 eNB判断上述平均计算获得的平均接入尝试次数是否超过预设的 接入尝试次数数门限, 上述预设的接入尝试次数门限为一经验值, 可以根据 实际情况来设置; 若上述平均接入尝试次数超过预设的接入尝试次数门限, 则执行步骤 506 , 否则执行步骤 507。
506、当 eNB判定上述平均接入尝试次数超过预设的接入尝试次数门限时, 表明终端在申请随机接入失败后, 需要不断的调整发送随机接入前导码的功 率, 直到随机接入成功。 由于终端在初始随机接入时, 使用的发射功率为小 区的前导码初始期望接收功率, 所以当终端通过不断上调发射上述前导码的 功率达到成功接入时, 当 eNB判定上述平均接入尝试次数超过预设的接入尝 试次数门限时, eNB增加上述小区的前导码初始期望接收功率,使终端在随机 接入时, 可以在较少的尝试次数内, 便可以实现随机接入的成功。
507、 终端随机入网时能够正常的随机接入, eNB不需要改变上述小区的 前导码初始期望接收功率。
其中, 根据终端在一次成功的随机接入过程中随机接入响应失败的次数 的随机接入测量项对终端随机接入进行优化处理过程, 与上述实施例中的步 骤 501到步骤 506基本相同, 只是上述随机接入测量项的参数为终端在一次 成功的随机接入过程中随机接入响应失败的次数, 该随机接入测量项的具 体计数点见图 6的 B点; 在 B点, 如果在随机接入响应时间窗内, 没有 收到随机接人相应消息(RAR, Random Acce s s Res pons e) ; 或者, 接收到 的随机接入响应消息内不包括终端刚才所发送的 Pr eamb 1 e的标识, 则随 机接入响应失败次数加 1 ; 并且在执行步骤 505时, eNB根据计算出的平均 否则执行步骤 507。
其中, 根据终端在一次成功的随机接入过程中发射前导码的最大发射功 率的随机接入测量项对终端随机接入进行优化处理的过程中, 与上述实施例 中的步骤 501到步骤 506基本相同, 只是上述随机接入测量项的参数为终端 在一次随机接入过程中随机接入达到最大发射功率限制,并且在执行步骤 505 时, 根据统计得到的终端的数量, 判断上述统计的终端的数量是否超过预设 的数量门限, 若上述统计获得的上述终端的数量超过预设的数量门限, 则执 行步骤 506 , 否则执行步骤 507。
其中, 在步骤 503 中, 若 eNB接收一个终端上报的上述随机接入测量项 时, 在步骤 504 中, 则不需要计算上述接入尝试次数或者响应失败次数的平 均值或者达到最大功率的终端的数量, eNB将接收到的上述接入尝试次数与预 选设置的尝试次数门限进行比较, 便可以判断上述尝试次数是否超过预设的 尝试次数门限, 若上述接收到的接入尝试次数超过了上述预设的接入尝试次 数门限时, 执行步骤 506便可以实现终端随机接入的优化处理; 否则执行步 骤 507; 或者
eNB 将接收到的上述响应失败次数与预选设置的响应失败次数门限进行
骤 506便可以实现终端随机接入的优化处理; 否则执行步骤 507; 或者
eNB将接收到的上述最大功率与预设的最大功率门限进行比较,便可以判 断上述最大功率是否超过预设的功率门限, 若上述接收到的上述最大功率超 过了上述预设的功率门限时, 执行步骤 506便可以实现终端随机接入的优化 处理; 否则执行步骤 507。
本发明实施例提供一种优化终端随机接入的网络侧装置, 如图 7 所示, 该装置包括: 接收单元 71和更改单元 72。
接收单元 71用于接收终端上报的随机接入测量项, 其中上述随机接入测 量项包括以下参数中的任意一项或者以下参数中任意项之间的组合: 随机接 入的尝试次数、 随机接入响应失败的次数、 随机接入达到最大发射功率限制。 上述接收单元 71在接收终端发送的上述随机接入测量项时, 可以只接收一个 终端上报的上述随机接入测量项, 也可以接收一个小区内的多个终端上报的 上述随机接入测量项。
在 eNB接收到上述终端发送的随机接入测量项后, 上述优化终端接入的 网络侧装置通过更改单元 72分析上述接收到的随机接入测量项, 将上述随机 接入测量项的值与预定的门限进行比较, 得到一个随机接入的分析结果, 并 根据上述分析结果确定随机接入信道的负载的影响; 在分析完上述随机接入 测量项对随机接入信道的影响后, 通过上述更改单元 72对终端随机接入的配 置参数进行更改, 上述配置参数为随机接入时小区的前导码的初始期望接收 功率。
其中, 上述更改单元 72还包括: 计算模块 721、 判断模块 722和更改模 块 723。 上述计算模块 721 用于当接收到的上述随机接入测量项的参数为: 终端 在一次成功的随机接入过程中进行的随机接入尝试次数时; 或者终端在一次 成功的随机接入过程中随机接入响应失败的次数时; 或者终端在一次随机接 入过程中随机接入达到最大发射功率限制; 对一个小区一定时间内接收到的 上述接入尝试次数或者响应失败的次数进行统计平均计算; 或者当接收到的 上述随机接入测量项的参数为当终端在一次随机接入过程中随机接入达到最 大发射功率限制时, 统计一个小区一定时间内接收到的随机接入达到最大发 射功率限制的终端的数量;。
当计算完成后,上述更改单元 72通过判断模块 722判断上述计算模块 721 计算得到的平均接入尝试次数是否超过预设的接入尝试次数门限; 若上述判 断模块 722判定述计算模块 721计算得的平均接入尝试次数超过了上述预设 的接入尝试次数门限时, 上述更改模块 723还用于增加小区的前导码的初始 期望接收功率; 或者
上述更改单元 72通过判断模块 722判断上述计算模块 721计算得到的平
数门限时, 上述更改模块 723还用于增加小区的前导码的初始期望接收功率; 或者
上述更改单元 72通过判断模块 722判断上述计算模块 721统计达到的随 机接入达到最大发射功率限制的终端的数量是否达到预设的数量门限; 若上 述判断模块 722判断上述计算模块 721统计达到的随机接入达到最大发射功 率限制的终端的数量超过预设的数量门限时, 上述更改模块 723还用于增加 上述小区的前导码的初始期望接收功率。
本实施实例中的优化终端随机接入的网络侧装置在 LTE 系统中可位于演 进基站 eNB。
本发明实施例提供一种终端, 如图 3所示, 该终端包括: 统计单元 31和 上报单元 32。
终端通过上述统计单元 31统计随机接入测量项; 上述随机接入测量包括 以下参数中的任意一项或者以下参数中任意项之间的组合: 随机接入的尝试 次数、 随机接入响应失败的次数、 随机接入达到最大发射功率限制。
在统计完上述随机接入测量项后, 该终端还通过上^艮单元 32将统计的上 述随机接入测量项上报给 eNB , 以指示该 eNB根据上述随机接入测量项优化终 端随机接入。 其中, 该终端将上述随机接入测量项上报给 eNB 时, 可以采用 但不局限于以下两种方式, 上述两种方式具体为:第一种, 通过无线资源控制 消息将上述随机接入测量项上报给上述 eNB; 第二种, 通过用户面将存储成日 志文件形式的上述随机接入测量项上 给上述 eNB。 其中, 上述终端通过无线 资源控制 RRC消息将上述随机接入测量项上报给上述 eNB时, 包括: 终端接 收 RRC连接重配置消息,该 RRC连接重配置消息中包含需要上报的随机接入测 量项; 或者, 上述终端向上述 eNB发送 RRC连接重配置完成消息, 该 RRC连 接重配置完成消息中包含上报的随机接入测量项。
本发明实施例中, eNB根据终端上传的随机接入尝试接入的次数, 或者根 据随机接入响应失败的次数, 或者根据随机接入达到最大发射功率限制; 获 知终端发送随机接入的前导码的功率, 即小区前导码的初始期望接收功率; 当 eNB判定上述终端上传的终端在一次成功随机接入过程中尝试接入的次数 超过预设的尝试次数门限时, 或者判定上述终端上传的终端在一次成功随机 传的终端在一次成功的随机接入过程中随机接入达到最大发射功率限制超过 预设的功率门限时; 获知终端发送随机接入的前导码的功率比较小, 即小区 前导码的初始期望接收功率比较小, eNB通过增加小区前导码的初始期望接收 功率, 便可以使终端随机接入时发送上述前导码的功率比较大, 从而使终端 在随机接入时, 经过比较少的尝试便可以成功接入, 使终端因不断的尝试接 入而占用的网络资源减少, 降低了终端随机入网时的冲突率, 提高随机接入 的成功率。
实施例 3
本发明实施例提供一种优化终端随机接入的方法, 本发明实施例以更改 物理随机接入信道资源为例来具体说明上述优化终端随机接入的过程,如图 8 所示, 该方法包括:
801、 终端统计随机接入测量项; 其中, 上述随机接入测量项的参数为随 机接入竟争解决失败次数。 上述随机接入竟争解决失败次数为终端在一次成 功的随机接入过程中竟争解决失败次数, 其中上述随机接入竟争解决失败次 数为: 终端在一次成功的随机接入过程中竟争解决定时器超时次数与竟争解 决消息内不包含有终端发送的资源请求信息的次数之和。
其中, 终端在一次成功的随机接入过程中竟争失败次数的统计具体见图 6所 示的 C点, 在 C点如果竟争解决定时器超时, 或者竟争解决消息内不包含有终 端在消息 3所发送的消息内容, 则竟争解决定时器超时次数加 1。
802、 在该终端统计好终端在一次成功的随机接入过程中竟争解决失败数 后, 将统计的包含上述竟争解决失败次数的随机接入测量项上报给 eNB , 以指 示该 eNB根据上述终端在一次成功的随机接入过程中竟争解决失败次数的随 机接入测量项优化终端随机接入。
其中, 上述终端将上述随机接入测量项上报给上述 eNB 时, 可以采用但 不局限于以下两种方式, 上述两种方式具体为:第一种, 通过无线资源控制消 息将上述随机接入测量项上报给上述 eNB; 第二种, 通过用户面将存储成日志 文件形式的上述随机接入测量项上报给上述 eNB。 其中, 终端通过无线资源控 制 RRC消息将上述随机接入测量项上报给上述 eNB时, 包括: 上述终端接收 RRC连接重配置消息,该 RRC连接重配置消息中包含需要上报的随机接入测量 项; 或者, 上述终端向上述 eNB发送 RRC连接重配置完成消息, 该 RRC连接 重配置完成消息中包含上报的随机接入测量项。
803、 上述 eNB接收终端上报的终端在一次成功的随机接入过程中竟争解 决失败次数的随机接入测量项; 其中在上述 eNB接收终端上报的随机接入测 量项时, 可以只接收一个终端上^艮的上述随机接入测量项, 也可以接收一个 小区一定时间内的多个终端上报的上述随机接入测量项。 本发明实施例中以 上述 eNB接收一个小区一定时间内的多个终端上报的上述随机接入测量项为 例具体说明。
804、 在上述 eNB接收到上述一个小区一定时间内的多个终端上报的随机 接入测量项后, eNB统计上对一个小区一定时间内接收到的上述竟争解决失败 次数进行平均计算, 获得平均竟争解决失败次数。 805、 eNB判断上述平均计算获得的竟争解决失败平均次数是否超过预设 的竟争解决失败次数门限, 上述预设的次数门限为一经验值, 可以根据实际 情况来设置; 若上述平均竟争解决失败次数超过预设的竟争解决失败次数门 限, 则执行步骤 806 , 否则执行步骤 807。
806、 当 eNB判定上述平均竟争解决失败次数超过预设的竟争解决失败次 数门限, 表明当前随机接入信道的负载比较高, 终端随机接入信道资源不能 够满足当前的终端随机接入的请求量, 使一个终端的随机接入必须等待其他 的随机接入结束, 才能竟争随机接入成功; 为了保证终端接入的成功率, 减 小终端接入的冲突率, 当 eNB判定上述平均竟争解决失败次数超过预设的竟 争解决失败次数门限时, eNB增加小区用于随机接入的随机接入信道资源。
807、 eNB不需要对小区用于随机接入的随机接入信道资源进行调整, 结 束优化终端随机接入的处理过程。
其中, 在步骤 803 中, 若 eNB接收一个终端上报的上述的随机接入测量 项时, 在步骤 804中, 则不需要计算上述竟争解决失败次数的平均值, eNB将 接收到的上述竟争解决失败的次数与预选设置的竟争解决失败次数门限进行 比较, 便可以判断上述竟争解决失败的次数是否超过预设的竟争解决失败次 数门限, 若上述接收到的竟争解决失败的次数超过了上述预设的竟争解决失 败次数门限时, 执行步骤 806便可以实现终端随机接入的优化处理, 否则执 行步骤 807。
本发明实施例提供一种优化终端随机接入的网络侧装置, 如图 7 所示, 该装置包括: 接收单元 71和更改单元 72。 接收单元 71用于接收终端上报的随机接入测量项, 上述随机接入测量项 的参数为终端在一次成功的随机接入过程中竟争解决失败次数, 在上述接收 单元 71接收终端上报的随机接入测量项时, 可以只接收一个终端上报的上述 随机接入测量项, 也可以接收一个小区一定时间内的多个终端上报的上述随 机接入测量项; 在接收到上述终端发送的随机接入测量项后, 上述优化终端 接入的网络侧装置通过更改单元 72 统计并分析上述接收到的随机接入测量 项, 并根据上述分析结果确定随机接入信道的负载的影响; 在分析完上述随 机接入测量项对随机接入信道的影响后, 通过上述更改单元 72 , 对终端随机 接入的配置参数进行更改, 上述配置参数为物理随机接入信道的资源。
其中, 上述更改单元 72还包括: 计算模块 721、 判断模块 722和更改模 块 723。当接收到的上述随机接入测量项为终端在一次成功的随机接入过程中 进行的随机接入竟争解决失败的次数时, 上述计算模块 721 用于对一个小区 一定时间内接收到的上述竟争解决失败的次数进行平均计算, 获得平均竟争 解决失败次数。 当获得上述平均竟争解决失败次数后, 上述更改单元 72通过 判断模块 722判断上述计算模块 721计算得到的平均竟争解决失败次数是否 超过预设的竟争解决失败次数门限; 若上述判断模块 722 判定上述计算模块 721 计算得的平均竟争解决失败次数超过了上述预设的竟争解决失败次数门 限时, 上述更改模块 723还用于增加上述小区用于接收随机接入的随机接入 信道资源。
本实施实例中的优化终端随机接入的网络侧装置在 LTE 系统中可位于演 进基站 eNB。
本发明实施例提供一种终端, 如图 3所示, 该终端包括: 统计单元 31和 上报单元 32。
终端通过上述统计单元 31统计随机接入测量项, 上述随机接入测量项的 参数为终端在一次成功的随机接入过程中进行的随机接入竟争解决失败的次 数; 在统计完上述随机接入测量项后, 上述终端通过上述上报单元 32将统计 的上述随机接入测量项上报给 eNB ,以指示该 eNB根据上述随机接入测量项优 化终端随机接入。 其中, 上述终端将上述随机接入测量项上报给上述 eNB时, 可以采用但不局限于以下两种方式, 上述两种方式具体为:第一种, 通过无线 资源控制消息将上述随机接入测量项上 给上述 eNB; 第二种, 通过用户面将 存储成日志文件形式的上述随机接入测量项上报给上述 eNB。 其中, 通过无线 资源控制 RRC消息将所述随机接入测量项上报给上述 eNB, 包括: 上述终端接 收 RRC连接重配置消息,该 RRC连接重配置消息中包含需要上报的随机接入测 量项; 或者, 上述终端向上述 eNB发送 RRC连接重配置完成消息, 该 RRC连 接重配置完成消息中包含上报的随机接入测量项。
本发明实施例中, eNB根据终端上传的终端在一次成功的随机接入过程中 进行的随机接入竟争解决定时器超时的次数; 获知随机接入信道的负载情况; 当 eNB判定上述终端上传的终端在一次成功的随机接入过程中进行的随机接 入竟争解决定时器超时的次数超过预设的超时次数门限时, 获知小区用于随 机接入的物理随机接入信道的负载比较高, 导致一个终端的随机接入要在其 他随机接入成功发送完数据后, 才能完成随机接入, 从而使终端随机接入时 要不断的尝试接入, 而过多的不成功的随机接入请求会加重随机接入的冲突 率, 使终端接入的成功率也随之降低; 所以当 eNB判定上述终端上传的终端 在一次成功的随机接入过程中进行的随机接入竟争解决定时器超时的次数超 过预设的超时次数门限时, 增加小区用于接收随机接入的物理随机接入信道 资源, 从而使终端在随机接入时, 由足够的随机接入信道进行使用, 避免了 很多终端竟争同一个负载较高的随机接入信道, 提高了网络资源的利用率, 降低了随机接入的冲突率, 提高了随机接入的成功率。
实施例 4
本发明实施例提供一种优化终端随机接入的方法, 本发明实施例以更改 随机接入前导码的分组为例来具体说明优化终端随机接入的过程, 如图 9 所 示, 该方法包括:
901、 终端统计随机接入测量项; 其中上述随机接入测量项包括以下参数 中的任意一项或者以下参数中任意项之间的组合: 链路损耗、 随机接入发送 的数据量。 其中, 上述链路损耗为上述链路损耗为终端侧物理层计算的下行 链路损耗; 上述随机接入发送的数据量为终端在一次随机接入的过程中随机 接入发送的数据量, 上述随机接入发送的数据量具体为: 终端在一次随机接 入的过程中发送的第三条消息所包含的数据量; 或者终端在一次随机接入的 过程中发送的第三条消息的大小, 上述第三条消息为终端使用 eNB分配的资 源在共享信道发送资源请求(Ms g 3 )。
本发明实施了以上述随机接入测量项的参数为终端侧物理层计算的用于 开环功率控制的下行链路损耗为例, 具体说明优化终端随机接入的过程。
902、 在上述终端统计好终端侧物理层计算的用于开环功率控制的下行链 路损耗后, 将统计的包含上述下行链路损耗的随机接入测量项上报给 eNB , 以 指示该 eNB根据上述下行链路损耗的随机接入测量项优化终端随机接入。
其中, 上述终端将上述随机接入测量项上报给上述 eNB 时, 可以采用但 不局限于以下两种方式, 上述两种方式具体为:第一种, 通过无线资源控制消 息将上述随机接入测量项上报给上述 eNB; 第二种, 通过用户面将存储成日志 文件形式的上述随机接入测量项上报给上述 eNB。 其中, 通过无线资源控制 RRC消息将上述随机接入测量项上报给上述 eNB, 包括: 上述终端接收 RRC连 接重配置消息,该 RRC连接重配置消息中包含需要上报的随机接入测量项; 或 者, 上述终端向上述 eNB发送 RRC连接重配置完成消息, 该 RRC连接重配置 完成消息中包含上报的随机接入测量项。
903、 eNB接收终端上报的上述下行链路损耗的随机接入测量项, 根据接 收到的上述下行链路损耗, 获得终端选择的前导码所在的分组的网络情况; 当上述接收到的开环功率控制的下行链路损耗超过预设的损耗门限时, 上述 损耗门限为一经验值, 可以根据实际情况设置; 表明上述终端当前的无线条 件比较差, 发送的数据资源超过预先设置的资源大小门限, 并且选择的是小 区前导码分组中的 B组前导码, 所以当 eNB判定接收终端上报的上述下行链 路损耗超过预定的损耗门限时, 执行步骤 904 ; 否则执行步骤 905。 时, 表明当前的小区内前导码的分组, 已经不能使终端在随机接入时合理的 选取非专用前导码, 所以 eNB通过调整上述小区的前导码分组, 并调整与上 述前导码分组所对应的终端发送的数据量的大小。
905、 eNB不需要调整上述前导码分组, 也不需要调整与上述前导码分组 所对应的终端发送的数据量的大小。
本发明实施例提供一种优化终端随机接入的网络侧装置, 如图 2 所示, 该装置包括: 接收单元 21和更改单元 22。 接收单元 21用于接收终端上报的随机接入测量项, 当上述随机接入测量 项包括: 终端侧物理层计算的用于开环功率控制的下行链路损耗、 或终端在 一次随机接入的过程中发送的数据量的大小。 在接收到上述终端发送的随机接入测量项后, 上述优化终端接入的网络 侧装置通过更改单元 22分析上述接收到的随机接入测量项, 并根据上述分析 结果确定小区前导码的分组情况; 在分析完小区前导码的分组情况对随机接 入的影响后, 通过上述更改单元 22 , 对小区用于随机接入的前导码的分组进 行调整, 并相应调整与上述前导码分组所对应的终端发送的数据量的大小。
本实施实例中的优化终端随机接入的网络侧装置在 LTE 系统中可位于演 进基站 eNB。
本发明实施例提供一种终端, 如图 3所示, 该终端包括: 统计单元 31和 上报单元 32。
终端通过上述统计单元 31统计终端侧物理层计算的用于开环功率控制的 下行链路损耗的随机接入测量项, 或者终端在一次随机接入的过程中发送的 数据量的大小, 或者终端侧物理层计算的用于开环功率控制的下行链路损耗 和终端在一次随机接入的过程中发送的数据量的大小相结合的随机接入测量 项。
在统计完上述随机接入测量项后, 上述终端通过上述上 单元 32将统计 的上述随机接入测量项上报给 eNB ,以指示 eNB根据上述随机接入测量项优化 终端随机接入。 其中, 上述终端将上述随机接入测量项上报给 eNB 时, 可以 采用但不局限于以下两种方式, 上述两种方式具体为:第一种, 通过无线资源 控制消息将上述随机接入测量项上报给上述 eNB; 第二种, 通过用户面将存储 成日志文件形式的上述随机接入测量项上 给上述 eNB。 其中, 通过无线资源 控制 RRC 消息将上述随机接入测量项上报给上述 eNB, 包括: 上述终端接收 RRC连接重配置消息,该 RRC连接重配置消息中包含需要上报的随机接入测量 项; 或者, 上述终端向上述 eNB发送 RRC连接重配置完成消息, 该 RRC连接 重配置完成消息中包含上报的随机接入测量项。
本发明实施例中, eNB根据终端上传的终端侧物理层计算的用于开环功率 控制的下行链路损耗; 或者终端在一次随机接入的过程中发送的数据量的大 小; 获知随机接入前导码的分组; 当 eNB根据上述接收到的随机接入测量项 获知, 当前的小区随机接入前导码的分组不合理, 导致随机接入下行链路的 损耗比较大, 从而使随机接入信道的负载比较高, 或者因传输数据资源比较 多而较长时间的占用随机接入信道, 导致随机接入的冲突率上升; 所以当 eNB 接收到的上述下行链路的损耗比较高或者终端发送的数据资源比较大时, 将 对上述随机接入的前导码进行重新分组, 并将终端发送的上述资源的大小做 相应的调整。
实施例 5
本发明实施例提供一种优化终端随机接入的方法, 本发明实施例以更改 回退随机接入的配置为例来具体说明优化终端随机接入的过程,如图 1 0所示, 该方法包括:
1 001、 终端统计随机接入测量项; 其中上述随机接入测量项包括以下参 数中的任意一项或者以下参数中任意项之间的组合:
随机接入过程中所用的时间、 随机接入回退次数、 随机接入回退所用的 时间。 其中上述随机接入所用的时间为终端在一次随机接入过程中所用的时 间; 上述随机接入回退次数为终端在一次随机接入过程中回退的次数; 上述 回退时间为终端在一次随机接入过程中回退所用的时间。 本实施例以终端在一次随机接入过程中所用的时间的随机接入测量项为 例具体说明优化终端随机接入的过程。
其中, 终端在一次随机接入过程中所用的时间的统计具体为如图 19所示: 具体测量开始点和测量结束点分别为图 11中的 A点和 Bl, B2点。
在 A点,当终端完成随机接入资源选择流程,向物理层指示发送随机接入 Preamb le时,开始计时; 在 B1点,当 UE成功接收到随机接入响应消息, 认为随 机接入流程成功结束后,结束计时,所得时间为专用 Preamb le的随机接入时 间;在 B2点,当终端成功接收到竟争解决消息,认为随机接入流程成功结束后, 结束计时,所得时间为基于竟争的随机接入时间。
1002、 在上述终端在一次随机接入过程中所用的时间后, 将统计的上述 包含上述终端在一次随机接入过程中所用时间的随机接入测量项上报给 eNB, 以指示该 eNB根据上述终端在一次随机接入过程中所用时间的随机接入测量 项优化终端随机接入。
其中, 上述终端将上述随机接入测量项上报给上述 eNB 时, 可以采用但 不局限于以下两种方式, 上述两种方式具体为:第一种, 通过无线资源控制消 息将上述随机接入测量项上报给上述 eNB; 第二种, 通过用户面将存储成日志 文件形式的上述随机接入测量项上报给上述 eNB。 其中, 通过无线资源控制 RRC消息将所述随机接入测量项上报给 eNB, 包括:上述终端接收 RRC连接重 配置消息,该 RRC连接重配置消息中包含需要上报的随机接入测量项; 或者, 所述终端向上述 eNB发送 RRC连接重配置完成消息, 该 RRC连接重配置完成 消息中包含上报的随机接入测量项。
1003、 eNB接收终端上报的终端在一次随机接入过程中所用的时间的随机 接入测量项, 在接收终端上报的随机接测量项时, 可以只接收一个终端上报 的上述随机接入测量项, 也可以接收一个小区一定时间内的多个终端上报的 上述随机接入测量项。 本发明实施例中以上述 eNB接收一个小区内的多个终 端上报的上述随机接入测量项为例具体说明。 1004、 在接收到上述一个小区一定时间内的多个终端上报的上述随机接 入测量项后, 上述 eNB对上述一个小区一定时间内接收到的上述终端在一次 随机接入所用的时间进行平均计算, 并获得随机接入所用的平均时间。
1005、 eNB判断上述随机接入所用的平均时间是否超过预设的随机接入所 用的时间门限, 上述预设的随机接入所用时间门限为一经验值, 可以根据实 际情况来设置; 若上述随机接入所用的平均时间超过预设的随机接入所用平 时间门限, 则执行步骤 1006 , 否则执行步骤 1007。
1006、 当 eNB判定上述随机接入过程所用平均时间超过预设的随机接入 过程所用的时间门限, 表明终端成功完成随机接入的时间很长, 那么在上述 时间内终端要不断的申请随机接入, 直到终端随机接入成功。 为了缩短一次 随机接入的时间, 将竟争解决定时时钟调小; 或者将回退定时时钟调小; 或 者增加物理随机接入信道资源。
1007、 eNB不需要将回退定时时钟调小或者竟争解决定时时钟调小; 或者 增加物理随机接入信道资源。
其中, 根据终端在一次随机接入过程中回退所用的时间的随机接入测量 项对终端接入进行优化处理过程中, 与上述实施例中的步骤 1001到步骤 1006 基本相同, 只是上述随机接入测量项的参数为终端在一次随机接入过程中回 退所用时间, 该随机接入测量项可以通过在图 11的 A, B两个测量点,在满足随 机接入回退次数的条件时, 累加 bckof f parameter的时间而得来; 并且在执 行步骤 1005时, 根据计算出的随机接入回退所用的平均时间, 判断上述随机 接入回退所用的平均时间是否超过预设的随机接入回退所用时间门限, 若上 述随机接入回退所用的平均时间超过预设的随机接入回退所用时间门限, 则 执行步骤 1006 , 否则执行步骤 1007。
其中, 根据终端在一次随机接入过程中回退的次数的随机接入测量项对 终端接入的优化处理时, 步骤与上述实施例中的步骤 1001到步骤 1006基本相 同, 只是上述随机接入测量项的参数为终端在一次随机接入过程中回退的次 数, 具体测量点参见图 11的 A点, B点; 在 A点,如果在随机接入响应时间窗内, 没有收到随机接入相应消息(RAR, Random Acces s Response) ; 或者, 接收到 的随机接入响应消息内不包括 UE刚才所发送的 Preamb le的标识, 则回退 ( backoff )次数加 1 ; 在 B点, 如果竟争解决定时器超时, 或者竟争解决消息 内不包含有 UE在消息 3所发送的消息内容, 则 backoff次数加 1。 并且在执行步 骤 1005时, 根据计算出的平均回退次数, 判断上述平均回退次数是否超过预 设的回退次数门限, 若上述平均回退次数超过预设的回退次数门限, 则执行 步骤 1006 , 否则执行步骤 1007。
其中, 在步骤 1003中, 若 eNB接收一个终端上报的上述的随机接入测量 项时, 在步骤 1 004中, 则不需要计算上述一次随机接入所用时间或者回退随 机接入的时间或者回退随机接入的次数的平均值, eNB将接收到的上述随机接 入所用的时间与预选设置的随机接入所用的时间门限进行比较, 便可以判断 上述随机接入所用时间是否超过预设的随机接入所用时间门限, 若上述接收 到的随机接入所用的时间超过了预设的随机接入所用时间门限时, 执行步骤 1006便可以实现终端随机接入的优化处理; 否则执行步骤 1007 ; 或者
eNB 将接收到的上述随机接入回退所用的时间与预设的随机接入回退所 用时间门限进行比较, 便可以判断上述随机接入回退所用的时间是否超过预 设的随机接入回退所用的时间门限, 若上述随机接入回退所用的时间超过了 预设的随机接入回退所用时间门限时, 执行步骤 1 006便可以实现终端随机接 入的优化处理; 否则执行步骤 1 007 ; 或者
eNB将接收到的上述随机接入回退次数与预设的回退次数门限进行比较, 便可以判断上述随机接入回退次数是否超过预设的回退次数门限, 若上述随 机接入回退次数超过了预设的回退次数门限时, 执行步骤 106便可以实现终 端随机接入的优化处理, 否则执行步骤 1 007。
本发明实施例提供一种优化终端随机接入的网络侧装置, 如图 7 所示, 该装置包括: 接收单元 71和更改单元 72。 接收单元 71用于接收终端上报的随机接入测量项, 其中上述随机接入测 量项包括以下参数中的任意一项或者以下参数中任意项的组合: 随机接入过 程中所用的时间、 随机接入回退次数、 随机接入回退所用的时间。 其中上述 随机接入所用的时间为终端在一次随机接入过程中所用的时间; 上述随机接 入回退次数为终端在一次随机接入过程中回退的次数; 上述回退时间为终端 在一次随机接入过程中回退所用的时间。 上述接收单元 71在接收上述随机接 入测量项时, 可以只接收一个终端上^艮的上述随机接入测量项, 也可以接收 一个小区一定时间内的多个终端上报的上述随机接入测量项。
在接收到上述终端发送的随机接入测量项后, 上述优化终端接入的网络 侧装置通过更改单元 72分析上述接收到的随机接入测量项, 并根据上述分析 结果确定随机接入信道的负载的影响; 在分析完上述随机接入测量项对随机 接入信道的影响后, 通过上述更改单元 72 , 对终端随机接入的配置参数进行 更改, 上述配置参数一般为终端随机接入时回退控制参数配置。
其中, 上述更改单元 72还包括: 计算模块 721、 判断模块 722和更改模 块 723。 当接收到的上述随机接入测量项为终端在一次随机接入过程中所用的时 间时, 上述计算模块 721 用于对一个小区一定时间内接收到的上述随机接入 所用的时间进行平均计算, 获得所述随机接入所用的平均时间; 当获得所述 随机接入所用的平均时间后, 上述更改单元 72通过判断模块 722判断所述计 算模块 721 计算获得的上述随机接入所用的平均时间是否超过预设的随机接 入所用的时间门限; 当上述判断模块 722 判定上述随机接入所用的平均时间 超过了预设的随机接入所用的时间门限时, 上述更改模块 723还用于将解决 定时时钟调小、 或者将回退定时时钟调小、 或者增加随机接入信道资源; 或 者
当接收到的上述随机接入测量项为终端在一次随机接入过程中随机接入 回退所用的时间时, 上述计算模块 721 用于当接收到的上述随机接入测量项 为终端在一次随机接入过程中随机接入回退所用的时间时; 对一个小区一定 时间内接收到的随机接入回退所用的时间进行平均计算, 获得的随机接入回 退所用的平均时间; 当获得随机接入回退所用的平均时间后, 上述更改单元 72通过上述判断模块 722判断上述计算模块 721计算获得的上述随机接入回 退所用的平均时间是否超过了预设的随机接入回退所用的时间门限; 当上述 判断模块 722 判定上述随机接入回退所用的平均时间超过了预设的随机接入 回退所用的时间门限时, 上述更改模块 723还用于将解决定时时钟调小、 或 者将回退定时时钟调小、 或者增加随机接入信道资源; 或者
当接收到的上述随机接入测量项为终端在一次随机接入过程中回退次数 时, 上述计算模块 721 用于对一个小区内一定时间内接收到的随机接入回退 次数进行平均计算, 获得随机接入的平均回退次数; 当获得随机接入的平均 回退次数后, 上述更改单元 72通过上述判断模块 722判断上述计算模块 721 计算获得的平均回退次数是否超过了预设的回退次数门限; 当上述判断模块 722判定上述平均回退次数超过了预设的回退次数门限时, 上述更改模块 723 还用于将解决定时时钟调小、 或者将回退定时时钟调小、 或者增加理随机接 入信道资源。
本实施实例中的优化终端随机接入的网络侧装置在 LTE 系统中可位于演 进基站 eNB。
本发明实施例提供一种终端, 如图 3所示, 该终端包括: 统计单元 31和 上报单元 32。
终端通过上述统计单元 31统计随机接入测量项; 其中上述随机接入测量 项包括以下参数中的任意一项或者以下参数中任意项的组合: 随机接入过程 中所用的时间、 随机接入回退次数、 随机接入回退所用的时间。 其中上述随 机接入所用的时间为终端在一次随机接入过程中所用的时间, 上述随机接入 回退次数为终端在一次随机接入过程中回退的次数, 上述回退时间为终端在 一次随机接入过程中回退所用的时间。
在统计完上述随机接入测量项后, 所诉终端还通过上述上^艮单元 32将统 计的上述随机接入测量项上报给 eNB ,以指示该 eNB根据上述随机接入测量项 优化终端随机接入。 其中, 上述终端将上述随机接入测量项上报给上述 eNB 时, 可以采用但不局限于以下两种方式, 上述两种方式具体为:第一种, 通过 无线资源控制消息将上述随机接入测量项上 给上述 eNB; 第二种, 通过用户 面将存储成日志文件形式的上述随机接入测量项上报给上述 eNB。 其中, 通过 无线资源控制 RRC消息将上述随机接入测量项上报给 eNB, 包括:上述终端接 收 RRC连接重配置消息,该 RRC连接重配置消息中包含需要上报的随机接入测 量项; 或者, 上述终端向上述 eNB发送 RRC连接重配置完成消息, 该 RRC连 接重配置完成消息中包含上报的随机接入测量项。
本发明实施例中, 通过检测终端一次随机接入所有的时间, 或者终端在 一次随机接入过程中重新发送随机接入请求的次数; 终端在一次随机接入过 程中重新发送随机接入请求所用的时间; 对随机接入进行优化。 当 eNB检测 到终端一次随机接入的时间超过预设的时间门限时, 获知网络繁忙时随机接 入信道的负载比较大, 而从使随机接入的冲突率比较高; 当 eNB检测到终端 一次随机接入的时间超过预设的时间门限时, 将竟争解决定时时钟调小, 或 者将回退定时时钟调小, 使随机接入的在随机接入信道传输的时间比较短, 加快了随机接入的处理速度, 与随机接入的使用时间比较长相比, 保证了随 机接入信道处理随机接入的能力, 降低了随机接入的冲突率; 当 eNB检测到 终端一次随机接入的时间超过预设的时间门限时, 增加物理随机接入信道的 资源后, 在一次随机接入时间比较长的基础上, 保证了信道资源的充足, 避 免多条随机接入请求因随机接入信道资源不足, 而竟争同一条随机接入信道 的情况, 在一定程度上降低了随机接入的冲突率, 进而提高了随机接入的成 功率。
通过随机接入测量项中任意项参数或组合来实现对随机接入的优化, 都 属于本发明保护的范围, 本发明实施例中将不再对通过随机接入测量项中任 意项参数的组合来实现对随机接入的优化的方法进行具体的描述。
通过以上的实施方式的描述, 所属领域的技术人员可以清楚地了解到本 发明可借助软件加必需的通用硬件的方式来实现, 当然也可以通过硬件, 但 很多情况下前者是更佳的实施方式。 基于这样的理解, 本发明的技术方案本 质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来, 该 计算机软件产品存储在可读取的存储介质中, 如计算机的软盘, 硬盘或光盘 等, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述的方法。
以上所述仅为本发明的具体实施方式, 但本发明的保护范围并不局限于 此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想 到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范 围应以所述权利要求的保护范围为准。

Claims

权利 要求 书
1、 一种优化终端随机接入的方法, 其特征在于, 包括:
接收终端上报的随机接入测量项;
根据所述随机接入测量项更改随机接入的配置参数。
2、 根据权利要求 1所述的优化终端随机接入的方法, 其特征在于, 所述随 机接入测量项包括以下参数中的任意一项或者以下参数中任意项的组合:
随机接入尝试次数、 随机接入响应失败次数、 随机接入竟争解决失败次 数、 链路损耗、 随机接入发送的数据量、 随机接入所用的时间、 随机接入回退 次数、 随机接入回退所用的时间、 高层重新发起随机接入的次数、 随机接入达 到最大发射功率限制。
3、 根据权利要求 2所述的优化终端随机接入的方法, 其特征在于, 所述随机接入尝试次数为: 终端在一次成功的随机接入过程中随机接入的 尝试次数;
所述随机接入响应失败次数为: 终端在一次成功的随机接入过程中随机接 入响应失败次数;
所述随机接入竟争解决失败次数为: 终端在一次成功的随机接入过程中竟 争解决失败次数;
所述链路损耗为: 终端侧物理层计算的下行链路损耗;
所述随机接入发送的数据量为: 终端在一次随机接入的过程中随机接入发 送的数据量;
所述随机接入所用的时间为: 终端在一次随机接入过程中所用的时间; 所述随机接入回退次数为: 终端在一次随机接入过程中回退的次数; 所述随机接入回退所用的时间为: 终端在一次随机接入过程中回退所用的 时间;
所述高层重新发起随机接入的次数为: 终端在随机接入过程中高层重新发 起随机接入的次数; 所述随机接入达到最大发射功率限制为: 终端在一次随机接入过程达到最 大发射功率限制。
4、 根据权利要求 2或 3所述的优化终端随机接入的方法, 其特征在于, 所述随机接入尝试次数为: 终端在一次成功的随机接入过程中前导码的发 送尝试次数, 或者, 终端在一次成功的随机接入过程中前导码初始接收功率的 攀升次数;
所述随机接入响应失败次数为: 终端在一次成功的随机接入过程中没有收 到随机接入响应消息的次数与接收到的所述随机接入响应消息内不包括所述终 端所发送的前导码标识的次数之和;
所述随机接入竟争解决失败次数为: 终端在一次成功的随机接入过程中竟 争解决定时器超时次数与竟争解决消息内不包含有终端发送的资源请求信息的 次数之和;
所述随机接入发送的数据量为: 终端在一次随机接入的过程中发送的第三 条消息数据量, 或者, 终端在一次随机接入的过程中发送的第三条消息大小; 所述高层重新发起随机接入的次数为: 所述终端在随机接入过程中, 高层 在随机接入达到最大重试次数时,重新发起随机接入的次数, 或者, 所述终端在 随机接入过程中高层随机接入失败次数。
5、 根据权利要求 1所述的优化终端随机接入的方法, 其特征在于, 所述配 置参数包括以下参数中的任意一项或者以下参数中任意项的组合: 随机接入信 道资源、 随机接入前导码的分组、 回退控制参数、 随机接入前导码的功率控制 参数。
6、 根据权利要求 1所述的优化终端随机接入的方法, 其特征在于, 当所述 随机接入测量项的参数为随机接入尝试次数或者随机接入响应失败次数时, 所 述根据所述随机接入测量项更改随机接入的配置参数包括:
对一个小区一定时间内接收到的所述随机接入尝试次数或者随机接入响应 失败次数进行平均计算获得平均接入尝试次数或平均响应失败次数; 机接入信道负载较低时,增加所述小区前导码的初始期望接收功率。
7、 根据权利要求 1所述的优化终端随机接入的方法, 其特征在于, 当所述 随机接入测量项的参数为随机接入竟争解决失败次数时, 所述根据所述随机接 入测量项更改随机接入的配置参数包括:
对一个小区一定时间内接收到的所述随机接入竟争解决失败次数进行平均 计算, 获得平均竟争解决失败次数;
若所述平均竟争解决失败次数超过预设的竟争解决失败次数门限, 并且在 随机接入信道负载较高时, 增加所述小区用于随机接入的随机接入信道资源。
8、 根据权利要求 1所述的优化终端随机接入的方法, 其特征在于, 当所述 随机接入测量项的参数为: 链路损耗或者随机接入发送的数据量时, 所述据所 述随机接入测量项更改随机接入的配置参数包括:
根据所述链路损耗或者所述随机接入发送的数据量, 调整小区中的前导码 分组配置, 和 /或调整前导码选择的消息大小门限。
9、 根据权利要求 1所述的优化终端随机接入的方法, 其特征在于, 当所述 随机接入测量项的参数为: 随机接入所用的时间时或者随机接入回退所用的时 间时, 所述据所述随机接入测量项更改随机接入的配置参数包括:
对一个小区一定时间内接收到的随机接入所用的时间或者随机接入回退所 用的时间进行平均计算, 获得随机接入所用的平均时间或随机接入回退所用的 平均时间;
若所述随机接入所用的平均时间或随机接入回退所用的平均时间超过预设 的时间门限, 则将竟争解决定时时钟调小、 或者将回退定时时钟调小、 或者增 加物理随机接入信道资源。
10、 根据权利要求 1 所述的优化终端随机接入的方法, 其特征在于, 当所 述随机接入测量项的参数为随机接入回退次数时, 所述据所述随机接入测量项 更改随机接入的配置参数包括: 对一个小区一定时间内接收到的所述随机接入回退次数进行平均计算, 获 得平均回退次数;
若所述平均回退次数超过预设的回退次数门限, 则将解决定时时钟调小、 或者将回退定时时钟调小、 或者增加物理随机接入信道资源。
1 1、 根据权利要求 1 所述的优化终端随机接入的方法, 其特征在于, 当所 述随机接入测量项的参数为随机接入达到最大发射功率限制时, 所述据所述随 机接入测量项更改随机接入的配置参数包括:
对一个小区一定时间内接收到的所述随机接入达到最大发射功率限制的终 端进行统计 , 获得达到最大发射功率限制的终端数量;
若所述达到最大发射功率限制的终端数量超过预设的数量门限, 且随机接 入信道负载较高时, 则所述根据所述随机接入测量项更改随机接入的配置参数 包括: 增加所述小区前导码的初始期望接收功率、 或者增加物理随机接入信道 资源、 或者增加前导码最大发射功率的门限。
12、 一种优化终端随机接入的方法, 其特征在于, 包括:
终端统计随机接入测量项;
将统计的所述随机接入测量项上报给演进基站 eNB ,以指示所述 eNB根据所 述随机接入测量项优化所述终端随机接入。
1 3、 根据所述权利要求 12所述的优化终端随机接入的方法, 其特征在于, 所述将统计的所述随机接入测量项上报给所述 eNB包括:
通过无线资源控制 RRC消息将所述随机接入测量项上 给所述 eNB; 或者 通过用户面将存储成日志文件形式的所述随机接入测量项上报给所述 eNB。
14、 根据所述权利要求 1 3所述的优化终端随机接入的方法, 所述通过无线 资源控制 RRC消息将所述随机接入测量项上报给 eNB, 包括:
所述终端接收 RRC连接重配置消息,所述 RRC连接重配置消息中包含需要上 报的随机接入测量项;
所述终端向所述 eNB发送 RRC连接重配置完成消息, 所述 RRC连接重配置 完成消息中包含上报的随机接入测量项。
15、 根据权利要求 12所述的优化终端随机接入的方法, 其特征在于, 所述 随机接入测量项包括以下参数中的任意一项或者以下参数中任意项的组合: 随机接入尝试次数、 随机接入响应失败次数、 随机接入竟争解决失败次 数、 链路损耗、 随机接入发送的数据量、 随机接入所用的时间、 随机接入回退 次数、 随机接入回退所用的时间、 高层重新发起随机接入的次数、 随机接入达 到最大发射功率限制。
16、 根据权利要求 15所述的优化终端随机接入的方法, 其特征在于, 所述随机接入尝试次数为: 终端在一次成功的随机接入过程中随机接入的 尝试次数;
所述随机接入响应失败次数为: 终端在一次成功的随机接入过程中随机接 入响应失败次数;
所述随机接入竟争解决失败次数为: 终端在一次成功的随机接入过程中竟 争解决失败次数;
所述链路损耗为: 终端侧物理层计算的下行链路损耗;
所述随机接入发送的数据量为: 终端在一次随机接入的过程中随机接入发 送的第三条消息数据量;
所述随机接入所用的时间为: 终端在一次随机接入过程中所用的时间; 所述随机接入回退次数为: 终端在一次随机接入过程中回退的次数; 所述随机接入回退所用的时间为: 终端在一次随机接入过程中回退所用的 时间;
所述高层重新发起随机接入的次数为: 终端随机接入过程中高层重新发起 随机接入的次数;
所述随机接入达到最大发射功率限制为; 终端在一次随机接入过程达到最 大发射功率限制。
17、 根据权利要求 15或 16所述的优化终端随机接入的方法, 其特征在于, 所述随机接入尝试次数为: 终端在一次成功的随机接入过程中前导码的发 送尝试次数, 或者, 终端在一次成功的随机接入过程中前导码初始接收功率的 攀升次数;
所述随机接入响应失败次数为: 终端在一次成功的随机接入过程中没有收 到随机接入响应消息的次数与接收到的所述随机接入响应消息内不包括所述终 端所发送的前导码标识的次数之和;
所述随机接入竟争解决失败次数为: 终端在一次成功的随机接入过程中竟 争解决定时器超时次数与竟争解决消息内不包含有终端发送的资源请求信息的 次数之和;
所述随机接入发送的数据为: 终端在一次随机接入的过程中发送的第三条 消息所包含的数据量, 或者, 终端在一次随机接入的过程中第三条消息的大小; 所述高层重新发起随机接入的次数为: 所述终端随机接入过程中, 高层在 随机接入达到最大重试次数时,重新发起随机接入的次数, 或者, 所述终端随机 接入过程中高层随机接入失败次数。
18、 一种优化终端随机接入的网络侧装置, 其特征在于, 包括: 接收单元, 用于接收终端上报的随机接入测量项; 更改单元, 用于根据所述随机接入测量项更改随机接入的配置参数。
19、根据权利要求 18所述的优化终端随机接入的网络侧装置,其特征在于, 所述随机接入测量项包括以下参数中的任意一项或者以下参数中任意项的组 合:
随机接入尝试次数、 随机接入响应失败次数、 随机接入竟争解决定时器超 时次数、 链路损耗、 随机接入发送的数据量、 随机接入所用的时间、 随机接入 回退次数、 随机接入回退所用的时间、 高层重新发起随机接入的次数、 随机接 入达到最大发射功率限制。
20、根据权利要求 18所述的优化终端随机接入的网络侧装置,其特征在于, 所述更改单元包括: 计算模块、 判断模块和更改模块; 当所述随机接入测量项的参数为随机接入尝试次数或者随机接入响应失败 的次数时, 所述计算模块用于对一个小区一定时间内接收到的所述随机接入尝 试次数或者响应失败的次数进行平均计算, 所述判断模块用于判断所述计算模 限, 所述更改模块用于当所述判断模块判定所述平均接入尝试次数或平均响应 失败次数超过预设的次数门限时, 增加所述小区的前导码的初始期望接收功率; 或者 当所述随机接入测量项的参数为随机接入竟争解决失败次数时, 所述计算 模块用于对一个小区一定时间内接收到的所述随机接入竟争解决失败次数进行 平均计算, 所述判断模块用于判断所述计算模块计算得到的平均竟争解决失败 次数是否超过预设的竟争解决失败次数门限; 所述更改模块用于当所述判断模 块判定所述平均竟争解决失败次数超过预设的竟争解决失败次数门限, 并且在 随机接入信道负载较高时, 增加所述小区用于随机接入的物理随机接入信道资 源; 或者
当所述随机接入测量项的参数为链路损耗时或者随机接入发送的数据量 时, 所述更改模块用于所述根据接收到的所述链路损耗或者随机接入发送的数 据量, 调整小区中的前导码分组配置, 和 /或调整前导码选择的消息大小门限; 或者 当所述随机接入测量项的参数为随机接入所用的时间时或者随机接入回退 所用的时间时, 所述计算模块用于对一个小区一定时间内接收到的所述随机接 入所用的时间时或者随机接入回退所用的时间进行平均计算, 所述判断模块用 于判断所述计算模块计算得到的随机接入所用的平均时间或随机接入回退所用 的平均时间是否超过预设的时间门限, 所述更改模块用于当所述判定模块判定 所述随机接入所用的平均时间或随机接入回退所用的平均时间超过预设的时间 门限时, 将竟争解决定时时钟调小、 或者将回退定时时钟调小、 或者增加随机 接入信道资源; 或者
当所述随机接入测量项的参数为随机接入回退次数时, 所述计算模块用于 对一个小区一定时间内接收到的所述随机接入回退次数进行平均计算, 所述判 断模块用于判断所述计算模块计算得到的平均回退次数是否超过预设的回退次 数门限, 所述更改模块用于当所述判定模块判定所述平均回退次数超过预设的 回退次数门限时, 将竟争解决定时时钟调小、 或者将回退定时时钟调小、 或者 增加物理随机接入信道资源; 或者 当所述随机接入测量项的参数为随机接入达到最大发射功率限制时, 所述 计算模块用于对一个小区一定时间内接收到的所述随机接入达到最大发射功率 限制的终端进行统计, 所述判断模块用于判断所述计算模块统计得到的终端的 数量是否超过预设的数量门限, 所述更改模块用于当所述统计得到的终端的数 量超过预设的数量门限, 且随机接入信道负载较高时,增加所述小区前导码的初 始期望接收功率、 或者增加物理随机接入信道资源、 或者增加前导码最大发射 功率的门限。
21、 一种终端, 其特征在于, 包括:
统计单元, 用于终端统计随机接入测量项;
上报单元, 用于将统计的所述随机接入测量项上报给演进基站 eNB , 以指示 所述 eNB根据所述随机接入测量项优化终端随机接入。
22、 根据权利要求 21所述的终端, 其特征在于,
所述上报单元还用于通过无线资源控制 RRC 消息将所述随机接入测量项上 报给所述 eNB;或者
所述上报单元还用于通过用户面将存储成日志文件形式的所述随机接入测 量项上 给所述 eNB。
23、 根据权利要求 21所述的终端, 其特征在于, 所述随机接入测量项包括 以下参数中的任意一项或者以下参数中任意项的组合:
随机接入尝试次数、 随机接入响应失败次数、 随机接入竟争解决定时器超 时次数、 链路损耗、 随机接入发送的数据量、 随机接入所用的时间、 随机接入 回退次数、 随机接入回退所用的时间、 高层重新发起随机接入的次数、 随机接 入达到最大发射功率限制。
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