WO2011066795A1 - 网络接入的方法、装置 - Google Patents

网络接入的方法、装置 Download PDF

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Publication number
WO2011066795A1
WO2011066795A1 PCT/CN2010/079356 CN2010079356W WO2011066795A1 WO 2011066795 A1 WO2011066795 A1 WO 2011066795A1 CN 2010079356 W CN2010079356 W CN 2010079356W WO 2011066795 A1 WO2011066795 A1 WO 2011066795A1
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WIPO (PCT)
Prior art keywords
time
service
data transmission
triggering
terminal
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PCT/CN2010/079356
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English (en)
French (fr)
Inventor
邓永锋
舒兵
秦钧
赵旸
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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 CN201080053836.8A priority Critical patent/CN102771177B/zh
Priority to EP15157229.4A priority patent/EP2897437B1/en
Priority to EP10834228.8A priority patent/EP2509384B1/en
Publication of WO2011066795A1 publication Critical patent/WO2011066795A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for performing network access by an M2M terminal. Background technique
  • M2M (Machine to Machine) communication is the integration of ubiquitous end devices or subsystems through a variety of communication technologies and summarizing them into a management system to implement the end devices or Subsystem management and services. For example: Install a module that can monitor the operating parameters of the distribution network in the power equipment to realize real-time monitoring, control, management and maintenance of the power distribution system; install a module that can collect information on the operation of the oil well in the petroleum equipment, and adjust the oil well equipment remotely. And control, timely and accurate understanding of the working conditions of the oil well equipment; equipped with vehicle information terminal, remote monitoring system, etc., to achieve vehicle operating status monitoring.
  • M2M service Since the application of the M2M service requires large-scale deployment of M2M terminals in a certain area, and most M2M services have the characteristics of small data volume, frequent data transmission, and various types of services, the M2M service will mature at present.
  • Commercial communication networks cause interference and capacity shocks. For example, due to the large number of M2M terminals, if these M2M terminals access the network at the same time, it will inevitably cause a burst of access bursts (ABs), which makes the access channel congested.
  • ABs access bursts
  • the application platform of M2M is currently signaling different M2M.
  • the terminal configures different data transmission parameters, from And controlling different M2M terminals to access the network and send data in different time periods.
  • each M2M terminal In order to prevent the M2M terminal from colliding when acquiring access resources, each M2M terminal must be assigned a specific access time, which will inevitably increase the signaling load of the network.
  • Embodiments of the present invention provide a method and apparatus for network access.
  • a method for network access including:
  • the terminal initiates a random access request procedure.
  • a device for network access comprising:
  • the terminal side determines a random time as a service triggering time according to a predetermined policy, and randomizes the service triggering time to avoid the connection caused by the simultaneous initiation of the M2M service.
  • the bursting spike of the incoming pulse effectively solves the congestion phenomenon of the random access channel.
  • the terminal itself randomly determines the service triggering time, and the M2M server does not need to send signaling to assign a dedicated access time, which is reduced. The signaling load of the network.
  • the embodiment of the invention further provides a network access method, including:
  • the embodiment of the present invention further provides an apparatus for network access, including: an acquiring unit, configured to acquire terminal group information, and an access letter corresponding to each group of terminals respectively Distribution information of the road;
  • a sending unit configured to send an access request on the access channel resource corresponding to the current terminal according to the terminal group information and the allocation information of the access channel.
  • the method and device for network access provided by the embodiments of the present invention, by grouping different terminals, and then assigning different frames to different groups of terminals to perform network random access, thereby avoiding the connection caused by the simultaneous initiation of the M2M service.
  • the bursting spike of the incoming pulse effectively solves the congestion phenomenon of the random access channel.
  • Embodiment 1 is a flowchart of a method for network entry in Embodiment 1 of the present invention
  • FIG. 2 is a schematic structural diagram of a network input device according to Embodiment 1 of the present invention.
  • FIG. 3 is a signaling flowchart of a method for entering a network according to Embodiment 2 of the present invention.
  • FIG. 5 is a signaling flowchart of a method for joining a wife in the fourth embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a network access device in Embodiment 5 of the present invention.
  • FIG. 7 is a schematic structural diagram of a network access system according to Embodiment 6 of the present invention.
  • Embodiment 8 is a flowchart of a method for network entry in Embodiment 7 of the present invention.
  • FIG. 9 is a schematic structural diagram of a network access apparatus according to Embodiment 7 of the present invention.
  • the embodiments of the present invention provide a network access method and device, which are used to solve the problem of access congestion, and do not increase the signaling load of the network.
  • the method and apparatus for network access provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the method for network access provided in this embodiment includes:
  • the predetermined triggering time randomization strategy may be: randomly selecting a certain time in a time interval in which data can be transmitted as a service triggering time; or setting a triggering condition (such as a threshold value) in the triggering condition.
  • the moment that is satisfied is the business trigger moment.
  • the service triggering time may be the network access time when the M2M terminal performs the information reporting on the specific service; the smart meter reading service is taken as an example, and the service triggering moment may be initiated when the M2M terminal needs to report the power consumption data. The moment when the network randomly accesses the request.
  • the terminal initiates a random access request procedure at the determined service triggering moment.
  • the M2M terminal may select an access pulse (AB) to initiate a random access request according to an existing random access procedure of the network, and trigger a specific service establishment process.
  • AB access pulse
  • the execution body of the above steps may be an M2M terminal.
  • an apparatus for network access including a determining unit 21 and an access unit 22;
  • the determining unit 21 is configured to determine a service triggering time according to a predetermined triggering time randomization policy.
  • the access unit 22 is configured to initiate a random access request procedure at the determined service triggering moment.
  • the device that accesses the network may be an M2M terminal.
  • the method and device for network access provided by the embodiment of the present invention are determined by the terminal side according to a predetermined policy Slightly determining a random moment as a service triggering moment, by randomizing the service triggering time, thereby avoiding the bursting spike of the access pulse caused by the M2M service simultaneously, effectively solving the congestion phenomenon of the random access channel;
  • the terminal itself randomly determines the service triggering time, the M2M server does not need to send signaling to assign a dedicated access moment, which reduces the signaling load of the network.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the network access method provided in this embodiment includes the following steps: 301.
  • An MTC Server (Machine Type Communication Server) sends data transmission configuration information to a group terminal.
  • the terminal in the group refers to the terminal of the same terminal group.
  • the data transmission configuration information includes the start time and the effective duration of the data transmission by the terminal.
  • the start time and the effective duration together define a time interval in which the terminal can transmit data. If the start time is not included in the data transmission configuration information, the time when the terminal receives the data transmission configuration information by default is the start time of data transmission.
  • the data transmission configuration information may further include service randomization configuration information, where the service randomization configuration information includes a randomized granularity, or a randomized granularity, and a service trigger threshold.
  • the randomization granularity may be a fixed period of time, such as 120/26ms, 5ms, 10ms, etc.; the service trigger threshold may be configured as any value within the open interval (0, 1).
  • randomized granularity and traffic trigger thresholds can also be directly encapsulated in M2M terminals to simplify the configuration of data transfer information.
  • the MTC server can configure the smart meter reading terminal to report the power consumption information between 9:00 and 10:00; at the same time, the MTC server can also indicate that the randomized granularity of the current data transmission is 36 ms or the service trigger threshold. to 10-4.
  • the M2M terminal can save the corresponding data transmission configuration locally and apply it during the next data transmission.
  • the M2M terminal determines a start time of data transmission in the data transmission configuration information. If yes, go to step 303; if not, go to step 302. 303.
  • the application layer of the M2M terminal combines data transmission configuration information sent by the MTC server, and determines a service triggering time according to a predetermined triggering time randomization policy.
  • the method for determining the service triggering time in the embodiment may be as follows: 1) For the case where the service randomization configuration information only includes the randomized granularity, the service triggering time may be determined by the following process:
  • the M2M terminal calculates a time interval for data transmission according to the start time and the effective duration of the data transmission, and then divides the time interval into multiple time intervals according to the randomization granularity, and from the multiple time intervals.
  • the starting time of a time interval is randomly selected as the service triggering time.
  • the period from 9:00 to 10:00 can be It is divided into 100000 (lh/36ms) time intervals.
  • the M2M terminal selects one of the 100000 time intervals as a service triggering interval.
  • the starting time of the service triggering interval is the service triggering time.
  • Knowledge can be inferred from the probability theory probability of each M2M terminal initiated smart metering service at any time interval are 10-5.
  • the service randomization configuration information includes the randomization granularity and the service trigger threshold
  • the following process can be used to determine the service triggering time:
  • the M2M terminal calculates a time interval for data transmission according to the start time and the effective duration of the data transmission, and then divides the time interval into multiple time intervals according to the randomization granularity, and sequentially in the multiple time intervals.
  • the random number in the range of (0, 1) is generated in an equal probability, until a random number smaller than the service trigger threshold occurs, and the start time of the current time interval corresponding to the random number smaller than the service trigger threshold is Trigger the moment for the business.
  • transmission start time MTC server 0900 configuration data is, when the effective length is 1 hour, the particle size of 36ms randomized, service triggering threshold is 10-4, then from 9 to The time of 10 o'clock can be divided into 100000 (lh/36ms) time intervals; the M2M terminal generates an (0,1) range with equal probability in any time interval. Random number.
  • the random number to the service triggering threshold 10-4 is compared, if the random number is less than the service triggering threshold 1 (T 4, the M2M terminals start time of the current time interval as the service triggering time for triggering the intelligent service meter; conversely The M2M terminal waits for the next service triggering interval to generate a new random number, and compares it with the service trigger threshold. In this implementation manner, each M2M terminal initiates the smart meter reading service at any one time interval.
  • the probability is 10 - 4 .
  • the M2M terminal application layer sends a service trigger request to the RR (Radio Resources) layer at the determined service triggering moment.
  • the M2M terminal after receiving the service triggering request, selects an access pulse to send a random access request to the base station according to the existing random access procedure, to trigger the service establishment process.
  • the M2M terminal After the data transmission is completed, the M2M terminal will exit the current data transmission process.
  • the RR layer of the M2M terminal forwards the prohibition to the application layer after receiving the forbidden access indication.
  • Access indication After receiving the prohibition access indication, the application layer will stop sending service requests.
  • the RR layer After receiving the allowed access indication sent by the base station, the RR layer reports the allowed access request to the application layer. After that, the application layer calculates the new effective transmission duration again (that is, the data transmission time configured by the MTC server). The remainder of the interval), and reselect the service triggering moment to continue the aforementioned data transmission process.
  • the terminal-side application layer determines a random time as a service triggering time according to a predetermined policy, and randomizes the service triggering time to avoid the connection caused by the simultaneous initiation of the M2M service.
  • the bursting spike of the incoming pulse effectively solves the congestion phenomenon of the random access channel.
  • the terminal itself randomly determines the service triggering time, and the M2M server does not need to send signaling to assign a dedicated access time, which is reduced. The signaling load of the network.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the M2M terminal application layer cannot know the configuration of the access channel on the radio interface, the use efficiency of the service random trigger mechanism cannot be maximized. For example, if the current cell is equipped with two random access channels at the same time, it can provide access devices for two M2M terminals at the same time. Yes, the M2M terminal application layer can only select the service trigger time in this dimension of time, thus vacating 1/2 access channel resources. For the foregoing reasons, in this embodiment, a method for network access based on RR layer control is provided to implement a service trigger randomization mechanism.
  • the method for network access provided in this embodiment includes the following steps:
  • the MTC Server sends data transmission configuration information to the M2M terminal in the group.
  • the data transmission configuration information includes a start time and an effective duration of the data transmission by the M2M terminal; the start time and the effective duration jointly define a time interval during which the M2M terminal can perform data transmission. If the start time is not included in the data transmission configuration information, the time when the terminal receives the data transmission configuration information by default is the start time of data transmission.
  • the base station broadcasts the M2M service randomization configuration information to the M2M terminal.
  • the service randomization configuration information includes a randomization granularity, or a randomized granularity and a service trigger threshold.
  • the randomization granularity may be a fixed time period, such as 1 TS (Time Slot), 2 TS, etc.; the service trigger threshold may be configured as any value within the open interval (0, 1).
  • the MTC server can configure the smart meter reading terminal to report the power consumption information between 9:00 and 10:00; at the same time, the base station can also indicate that the randomized granularity of the current data transmission is 1 TS (120/ 26ms) or the service trigger threshold is 1/78000.
  • the M2M terminal can save the corresponding configuration information locally and apply it during the next data transmission.
  • the randomization granularity and the service trigger threshold can also be directly solidified in the M2M terminal to save the transmission resources of the air interface; at this time, the step 402 is not needed, and after the step 401 is completed, the step 403 is directly executed.
  • the M2M terminal determines whether a start time of data transmission in the data transmission configuration information arrives. If yes, step 404 is performed; if not, step 403 is continued.
  • the application layer of the M2M terminal sends a service trigger request to the RR layer, where the request carries the valid duration of data transmission (1 hour).
  • the RR layer of the M2M terminal receives the validity of the data transmission sent by the application layer. After the length, the service triggering time is determined according to the predetermined triggering time randomization policy according to the received M2M service randomization configuration information sent by the base station.
  • the manner of determining the service triggering time may be as follows:
  • the service triggering time can be determined by the following process:
  • the M2M terminal calculates a time interval for data transmission according to the start time and the effective duration of the data transmission, and then divides the time interval into multiple time intervals according to the randomization granularity, and from the multiple time intervals.
  • a time interval is randomly selected as the service triggering interval
  • the starting time slot of the service triggering interval is the service triggering time.
  • the start time of the MTC server configuration data transmission is 9 hours, and the effective duration is 1 hour.
  • the randomization granularity indicated by the base station is I TS (120/26ms), then from 9:00 to The time period of 10 o'clock can be divided into 78,000 time intervals; the M2M terminal selects one of them from the 780,000 time intervals with a medium probability as the service triggering time interval, and the starting time slot of the service triggering time interval is the service triggering. time. From the knowledge of probability theory, it can be inferred that the probability of each M2M terminal initiating smart meter reading service in any one time slot is 1/780000»
  • the service randomization configuration information includes the randomization granularity and the service trigger threshold
  • the following process can be used to determine the service triggering time:
  • the M2M terminal calculates a time interval for data transmission according to the start time and the effective duration of the data transmission, and then divides the time interval into multiple time intervals according to the randomization granularity, and sequentially in the multiple time intervals.
  • the random number in the range of (0, 1) is generated in an equal probability, until a random number smaller than the service trigger threshold occurs, and the start time slot of the current time interval corresponding to the random number smaller than the service trigger threshold This is the moment when the business is triggered.
  • the smart meter reading service is used as an example.
  • the start time of the MTC server configuration data transmission is 9 hours, the effective duration is 1 hour, and the randomization granularity indicated by the base station is ITS (120/26ms), and the service trigger threshold is 1Z78000.
  • the period from 9:00 to 10:00 can be divided into 780000 (Ih/1TS) time intervals; M2M terminal at any one time interval A random number in the range of (0, 1) is generated with equal probability.
  • the M2M terminal Comparing the random number with the service trigger threshold 1/78000, if the random number is less than the service trigger threshold 1/78000, the M2M terminal uses the start time slot of the current time interval as the service trigger time to trigger the smart meter reading service; The M2M terminal waits for the next time interval to generate a new random number and compares it with the service trigger threshold. In this implementation manner, the probability that each M2M terminal initiates smart meter reading service in any one time slot is 1/78000.
  • the service triggering time determined by the M2M terminal RR layer is actually the "trigger time of the immediate assignment process" in the corresponding standard (TS44.018 3.3.1.1.2 Initiation of the immediate assignment procedure).
  • the M2M terminal RR layer after arriving at the determined service triggering time, selects an access pulse to send a random access request to the base station according to the existing random access procedure, to trigger the service establishment process.
  • the M2M terminal RR layer may enter the sleep state before the service triggering time arrives, thereby saving power resources.
  • the M2M terminal After the data transmission is completed, the M2M terminal will exit the current data transmission process.
  • the M2M terminal In the process of data transmission, if the network is overloaded, the M2M terminal receives the forbidden access indication sent by the base station; afterwards, the M2M terminal RR layer needs to monitor the access indication information of the base station, and adjust the effective transmission duration in real time (ie, The remainder of the data transmission time interval configured by the MTC server). After receiving the allowed access indication sent by the base station, the M2M terminal RR layer reselects the service triggering moment and continues the foregoing data transmission process.
  • the terminal-side radio resource layer determines a random time as a service triggering time according to a predetermined policy, and randomizes the service triggering time to avoid the M2M.
  • the service initiates the bursting spike of the access pulse at the same time, effectively solving the congestion phenomenon of the random access channel; and, by the terminal itself randomly determining the service triggering time, it is not necessary to assign a special signaling through the M2M server.
  • the access time reduces the signaling load of the network.
  • the RR layer can directly obtain the configuration of the access channel on the radio interface, the service trigger mechanism is adjusted in real time to improve the random trigger mechanism of the service. Use efficiency.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the method for network access provided in this embodiment includes the following steps:
  • the base station broadcasts data transmission configuration information to the intra-group M2M terminal.
  • the data transmission configuration information includes a start frame number and a valid frame number for the M2M terminal to perform data transmission. If the starting frame number is not included in the data transmission configuration information, the radio frame that the terminal receives the data transmission configuration information by default is the starting frame for data transmission.
  • the data transmission configuration information may further include service randomization configuration information, where the service randomization configuration information includes a service trigger threshold.
  • the service trigger threshold may be configured as any value within the open interval (0, 1).
  • the MTC Server can configure the smart meter reading terminal to report the power consumption information between 0 and 9999 frames.
  • the base station can also indicate that the service trigger threshold of the current data transmission is 1/1000.
  • the M2M terminal can save the corresponding configuration information locally and apply it during the next data transmission.
  • the service trigger threshold can also be directly fixed in the M2M terminal to save the air interface transmission resources.
  • the M2M terminal determines whether a start frame for data transmission in the data transmission configuration information arrives. If yes, step 503 is performed; if not, step 502 is continued.
  • the application layer of the M2M terminal sends a service trigger request to the RR layer, where the request carries the number of valid frames for data transmission.
  • the RR layer of the M2M terminal After receiving the number of valid frames sent by the application layer, the RR layer of the M2M terminal determines a service triggering time according to a predetermined triggering time randomization policy.
  • the manner of determining the service triggering time may be as follows: 1) For the case where the data transmission configuration information includes only the starting frame number and the effective number of frames, the following procedure can be used to determine the service triggering time:
  • the M2M terminal determines a plurality of valid frames that can be used for data transmission according to the starting frame number and the effective number of frames sent by the data, and then randomly selects one of the plurality of valid frames, and the access slot corresponding to the selected frame is Trigger the moment for the business.
  • the effective frame transmitted by the network (base station) configuration data is 0 to 9999 frames, and then the M2M terminal selects one of the frames from the effective frames, and corresponds to the selected frame.
  • the access slot is used as the service trigger time. It can be inferred from the knowledge of probability theory that the probability of each M2M terminal initiating smart meter reading service in any one time slot is 1/10000.
  • the data transmission configuration information further includes service randomization configuration information, that is, the data transmission configuration information further includes a service trigger threshold, and the following process can be used to determine the service trigger time:
  • the M2M terminal determines a plurality of valid frames that can be used for data transmission according to the start frame number and the effective frame number of the data transmission, and then sequentially generates (0,) in the access slots corresponding to the multiple valid frames. 1) A random number in the range, until a random number smaller than the service trigger threshold occurs, the access time slot of the current frame corresponding to the random number less than the service trigger threshold is the service trigger time.
  • the smart meter reading service is used as an example.
  • the valid frame sent by the base station configuration data is 0 to 9999 frames, and the service trigger threshold is 1/1000.
  • the M2M terminal has equal probability in the access slot corresponding to any valid frame. Generate a random number in the range (0, 1). The random number is compared with the service trigger threshold of 1/1000. If the random number is less than the service trigger threshold of 1/1000, the M2M terminal uses the access slot corresponding to the current frame as the service triggering time to trigger the smart meter reading service; The M2M terminal waits for the next frame to generate a new random number and compares it with the service trigger threshold. In this implementation manner, each M2M terminal has a probability of initiating a smart meter reading service in any one time slot of 1/1000.
  • the service triggering time determined by the M2M terminal RR layer the "triggering time of the immediate assignment process" in the actual corresponding standard (TS44.018 3.3.1.1.2 Initiation of the Immediate assignment procedure ).
  • the M2M terminal RR layer after arriving at the determined service triggering time, selects an access pulse to send a random access request to the base station according to the existing random access procedure, to trigger the service establishment process.
  • the M2M terminal RR layer may enter the sleep state before the service triggering time arrives, thereby saving power resources.
  • the M2M terminal After the data transmission is completed, the M2M terminal will exit the current data transmission process.
  • the network access method provided in this embodiment directly utilizes the existing communication system to implement the M2M service, and the M2M terminal determines the time slot corresponding to an access frame as the service trigger time according to the predetermined policy. Randomize the service triggering time, so as to avoid the bursting spike of the access pulse caused by the M2M service at the same time, effectively solving the congestion phenomenon of the random access channel; Moreover, the terminal itself does not need to randomly determine the service triggering moment.
  • the M2M server sends signaling to assign a dedicated access moment, which reduces the signaling load of the network.
  • the RR layer can directly obtain the configuration of the access channel on the radio interface, the service trigger mechanism is adjusted in real time to improve the efficiency of the service random trigger mechanism.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the embodiment further provides a device for accessing the network, as shown in FIG. 6, including a determining unit 61, an access unit 62, and an obtaining unit 63;
  • the obtaining unit 63 is configured to acquire data transmission configuration information, where the data configuration information includes a start time and an effective duration of data transmission. Specifically, the start time and the effective duration of the data transmission are configured by the MTC Server or the base station. If the data transmission configuration information sent by the MTC server or the base station does not carry the start time of the data transmission, the obtaining unit 63 defaults the time when the data transmission configuration information is received to the start of the data transmission.
  • the data transmission configuration information may further include a randomized granularity, or a randomized granularity, and a service triggering threshold. The randomized granularity and the service triggering threshold may be configured and delivered by the MTC Server or the base station, or may be Preset in the device accessed by the network.
  • the determining unit 61 combines the start time, the effective duration, and the service randomization of the data transmission.
  • the configuration information is determined according to a predetermined triggering time randomization policy; when the determined service triggering time arrives, the access unit 62 sends a random access request to the base station to trigger the service establishment process.
  • the apparatus for accessing the network provided in this embodiment further includes a trigger unit 64 located at the application layer;
  • the triggering unit 64 is configured to send a service trigger request to the radio resource layer to trigger the determining unit 61 located in the RR layer to perform Determining the operation of the business trigger moment;
  • the triggering unit 64 is configured to send a service trigger request to the radio resource layer at the service triggering moment determined by the determining unit 61.
  • the determining unit 61 may have the following implementation manner:
  • the determining unit 61 may include:
  • a calculation module configured to calculate a time interval for sending data according to a start time and an effective duration of the data transmission
  • a dividing module configured to divide the time interval into at least one time interval according to the randomization granularity
  • a selection module configured to randomly select a time interval from the at least one time interval, where the start time of the selected time interval is a service trigger time.
  • the determining unit 61 may include:
  • a calculation module configured to calculate a time interval for sending data according to a start time and an effective duration of the data transmission
  • a dividing module configured to divide the time interval into at least one time interval according to the randomization granularity
  • a generating module configured to sequentially generate a random number in a range of (0, 1) in the at least one time interval until a random number smaller than the service trigger threshold occurs, and the current time The starting moment of the interval is the business triggering moment.
  • the device for accessing the network may further include a determining unit 65, configured to determine whether a start time of the data transmission is reached;
  • the determining unit 61 needs to determine the service triggering time according to the predetermined triggering time randomization policy after the determining unit 65 determines that the starting time of the data transmission arrives.
  • the terminal side determines a random time as a service triggering time according to a predetermined policy, and randomizes the service triggering time to avoid the access pulse caused by the M2M service simultaneously being initiated.
  • the sudden spikes effectively solve the congestion phenomenon of the random access channel.
  • the terminal itself randomly determines the service triggering time, so that the M2M server does not need to send signaling to assign a dedicated access moment, thereby reducing the network. Signaling load.
  • the embodiment of the present invention further provides a network access system, as shown in FIG. 7, including a control end 71 and a terminal 72;
  • the control terminal 71 is configured to send data transmission configuration information to the terminal 72, and the terminal 72 is configured to combine the data transmission configuration information, and determine a service triggering time according to a predetermined triggering time randomization policy;
  • the random access request procedure is initiated to the base station when the service trigger time arrives.
  • the data transmission configuration information includes a start time and an effective duration of data transmission.
  • the data transmission configuration information may further include a randomization granularity; or the data transmission configuration information may further include a randomization granularity and a service trigger threshold.
  • the above-mentioned randomized granularity and service triggering threshold information may also be directly solidified in the terminal 72.
  • the data transmission configuration information may only include the start time and effective duration of the data transmission.
  • control terminal 71 is a logical concept, which may be an MTC Server, or may be part of the base station.
  • the network access system provided by the embodiment of the present invention is determined by the terminal side according to a predetermined policy.
  • the traffic triggering time is randomized, so as to avoid the sudden spike of the access pulse caused by the M2M service at the same time, effectively solving the congestion phenomenon of the random access channel;
  • the terminal itself randomly determines the service triggering time, and does not need to send a special access time through the signaling sent by the M2M server, thereby reducing the signaling load of the network.
  • the access channel is used. Group scheduling.
  • the embodiment of the present invention further provides a network access method, as shown in FIG. 8, including the following steps:
  • the execution body of each of the above steps may be an M2M terminal.
  • the allocation information of the access channel may be allocation information of frames in the access channel.
  • the network side groups the M2M terminals, and decides to allocate different frames of the access channel to different M2M terminal groups; and then broadcasts the M2M terminal group information and the frame allocation information of the access channels corresponding to each group of terminals respectively.
  • M2M terminal After obtaining the corresponding packet information and frame allocation information, the M2M terminal sends an access request on the frame number corresponding to the group to which it belongs. In this way, the collision of a large number of terminals simultaneously transmitting access requests in the same frame can be greatly reduced.
  • the grouping method may be that the terminal identifiers (such as IMSI, International Mobile Subscriber Identity) are grouped according to a certain algorithm.
  • the packet information may be that the network sends an indication to the M2M terminal through signaling, or may be configured to be pre-stored in the M2M terminal.
  • the probability of accessing the network can be increased by changing the proportion of the frame resources in the access channel.
  • High-priority services can be scheduled more frequently to ensure that M2M high-priority/emergency service data can be sent in time.
  • Group1 is a high-priority alarm service.
  • Group2 and Group3 are common services. Therefore, Groupl has more frequent access requests than other groups.
  • the device for providing network access is also provided in this embodiment. As shown in FIG. 9, the method includes:
  • the obtaining unit 91 is configured to acquire terminal group information, and allocation information of an access channel corresponding to each group of terminals respectively;
  • the sending unit 92 is configured to send an access request on the access channel resource corresponding to the current terminal according to the terminal group information and the allocation information of the access channel.
  • the method and device for network access provided by the embodiments of the present invention, by grouping different terminals, and then assigning different frames to different groups of terminals to perform network random access, thereby avoiding the connection caused by the simultaneous initiation of the M2M service.
  • the bursting spike of the incoming pulse effectively solves the congestion phenomenon of the random access channel.
  • the method and device for network access provided by the embodiments of the present invention are applicable to all wireless communication systems, including but not limited to GSM (Global System for Mobile Communications), WCDMA (Wideband Code Division Multiple Access, Wideband Code Division).
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • LTE Long Term Evolution
  • Wimax Worldwide Interoperability for Microwave Access
  • a software product which may be stored in a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, or the like.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.

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Description

网络接入的方法、 装置 本申请要求于 2009年 12月 2日提交中国专利局、申请号为 200910252899.5、 发明名称为 "网络接入的方法、 装置及系统" 的中国专利申请的优先权, 全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域,尤其涉及一种 M2M终端进行网络接入的方 法、 装置。 背景技术
M2M ( Machine to Machine, "机器" 对 "机器")通讯, 就是将无所不 在的各种末端设备或子系统通过多种通讯技术连接起来, 并将它们汇总到 管理系统从而实现对所述末端设备或子系统的管理和服务。 例如: 在电力 设备中安装可监测配电网运行参数的模块, 实现配电系统的实时监测、 控 制和管理维护; 在石油设备中安装可以采集油井工作情况信息的模块, 远 程对油井设备进行调节和控制, 及时准确了解油井设备工作情况; 在汽车 上配装采集车载信息终端、 远程监控系统等, 实现车辆运行状态监控等。
由于 M2M业务的应用要求 M2M终端要在一定的区域内进行大批量部 署, 而多数的 M2M业务具有数据量小、 数据传输零散频发、 业务种类繁多 等特点,因此 M2M业务的开展会对目前成熟的商用通信网络造成干扰和容 量沖击。 例如, 由于 M2M终端的数量大, 如果这些 M2M终端同时接入网 络势必会造成接入脉沖 ( Access Burst, AB )的突发尖峰, 使得接入信道拥 塞。
针对如何才能够在引入 M2M业务后, 基于无线资源管理来避免 M2M 对现有通信网络的沖击, 同时又满足 M2M的业务需求这一问题, 目前是由 M2M的应用平台通过信令为不同 M2M终端配置不同的数据传输参数, 从 而控制不同的 M2M终端在不同的时间段上接入网络、 发送数据。
然而, 在实现上述 M2M通讯的过程中, 发明人发现现有技术中至少存 在如下问题:
为了防止 M2M终端在获取接入资源时发生碰撞, 必须为每一个 M2M 终端分别指派专门的接入时刻, 这样势必会增加网络的信令负载。
发明内容
本发明的实施例提供一种网络接入的方法、 装置。
为达到上述目的, 本发明的实施例采用如下技术方案:
一种网络接入的方法, 包括:
按照预定的触发时刻随机化策略确定业务触发时刻;
在所确定的业务触发时刻, 终端发起随机接入请求流程。
一种网络接入的装置, 包括:
确定单元, 用于按照预定的触发时刻随机化策略确定业务触发时刻; 接入单元, 用于在所确定的业务触发时刻发起随机接入请求流程。 本发明实施例提供的网络接入的方法、 装置, 由终端侧根据预定的策 略来确定一个随机的时刻作为业务触发时刻, 通过将业务触发时间随机化, 从而避免 M2M业务同时发起所造成的接入脉冲的突发尖峰,有效地解决了 随机接入信道的拥塞现象; 而且, 由终端自身随机地确定业务触发时刻, 就无需通过 M2M服务器下发信令来指派专门的接入时刻,降低了网络的信 令负载。
本发明实施例还提供了一种网络接入的方法, 包括:
获取终端分组信息, 以及每组终端分别对应的接入信道的分配信息; 根据所述终端分组信息和所述接入信道的分配信息, 在当前终端对应 的接入信道资源上发送接入请求。
相应地, 本发明实施例还提供了一种网络接入的装置, 包括: 获取单元, 用于获取终端分组信息, 以及每组终端分别对应的接入信 道的分配信息;
发送单元, 用于才艮据所述终端分组信息和所述接入信道的分配信息, 在当前终端对应的接入信道资源上发送接入请求。
本发明实施例提供的网络接入的方法及装置, 通过将不同的终端进行 分组, 然后为不同组别的终端分配不同的帧以进行网络随机接入, 从而避 免 M2M业务同时发起所造成的接入脉冲的突发尖峰,有效地解决了随机接 入信道的拥塞现象; 而且, 利用本发明实施例提供的方案, 无需通过 M2M 服务器对每个终端逐一下发信令来指派专门的接入时刻, 降低了网络的信 令负载。
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为本发明实施例一中的网 入的方法流程图;
图 2为本发明实施例一中的网^ 入装置的结构示意图;
图 3为本发明实施例二中的网^ ¾入方法的信令流程图;
图 4为本发明实施例三中的网 妻入方法的信令流程图;
图 5为本发明实施例四中的网 妻入方法的信令流程图;
图 6为本发明实施例五中的网 ¾ ^妻入装置的结构示意图;
图 7为本发明实施例六中的网络接入系统的结构示意图;
图 8为本发明实施例七中的网 入的方法流程图;
图 9为本发明实施例七中的网络接入装置的结构示意图。
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。
本发明实施例提供一种网络接入的方法、 装置, 用以解决接入拥塞的 问题, 且不会增加网络的信令负载。 下面结合附图对本发明实施例提供的 网络接入的方法、 装置进行详细描述。
实施例一:
如图 1所示, 本实施例提供的网络接入的方法, 包括:
101、 按照预定的触发时刻随机化策略确定业务触发时刻。
所述预定的触发时刻随机化策略可以是随机地选取可进行数据发送的 时间区间内的某一时刻作为业务触发时刻;也可以是通过设置触发条件 (比 如门限值), 在所述触发条件得到满足的时刻即为业务触发时刻。
所述业务触发时刻可以是 M2M 终端针对具体业务进行信息上报时的 网络接入时刻; 以智能抄表业务为例, 其业务触发时刻就可以是 M2M终端 需要进行用电量数据上报时, 其发起网络随机接入请求的时刻。
102、 在所确定的业务触发时刻, 终端发起随机接入请求流程。
具体地, M2M终端可以按照现有的网络随机接入的过程, 选择一接入 脉沖 (AB ) 来发起随机接入请求, 触发具体业务的建立过程。
在本实施例中 , 上述步骤的执行主体可以是 M2M终端。
为了更好地实现上述方法, 本实施例中还提供了一种网络接入的装置, 包括确定单元 21和接入单元 22; 其中,
确定单元 21,用于按照预定的触发时刻随机化策略确定业务触发时刻; 接入单元 22, 用于在所确定的业务触发时刻发起随机接入请求流程。 在本实施例中, 所述网络接入的装置可以是 M2M终端。
本发明实施例提供的网絡接入的方法及装置, 由终端侧根据预定的策 略来确定一个随机的时刻作为业务触发时刻, 通过将业务触发时间随机化, 从而避免 M2M业务同时发起所造成的接入脉冲的突发尖峰,有效地解决了 随机接入信道的拥塞现象; 而且, 由终端自身随机地确定业务触发时刻, 就无需通过 M2M服务器下发信令来指派专门的接入时刻,降低了网络的信 令负载。
实施例二:
结合图 3所示, 本实施例提供的网络接入的方法, 包括以下步骤: 301、 MTC Server ( Machine Type Communication Server, 机器通信 ϋ良务 器) 向组内 Μ2Μ终端发送数据传输配置信息。
其中, 所述组内 Μ2Μ终端指的是同一终端群组的 Μ2Μ终端; 在本实施例中,所述数据传输配置信息中包含有 Μ2Μ终端进行数据发 送的起始时间和有效时长; 所述起始时间和有效时长共同限定了一个 Μ2Μ 终端可以进行数据发送的时间区间。 如果所述数据传输配置信息中不包含 起始时间, 则终端默认收到所述数据传输配置信息的时间即为数据发送的 起始时间。
此外, 所述数据传输配置信息中还可以包含业务随机化配置信息, 该 业务随机化配置信息包括随机化粒度、 或者随机化粒度和业务触发门限。 其中, 所述随机化粒度可以为一固定的时间段, 比如 120/26ms、 5ms、 10ms 等等; 所述业务触发门限可配置为开区间(0,1)内任意值。 当然, 随机化粒 度和业务触发门限也可直接固化在 M2M 终端中以简化数据传输信息的配 置过程。
以智能抄表业务为例, MTC server可配置智能抄表终端在 9时至 10时 之间上报用电量信息; 同时, MTC server还可以指示当前数据传输的随机 化粒度为 36ms或者业务触发门限为 10-4
M2M终端可以在本地保存相应的数据传输配置, 并在下一次数据传输 过程中应用。
302、 M2M 终端判断所述数据传输配置信息中的数据发送的起始时间 是否到达; 如果已经到达, 则执行步骤 303; 如果未到达, 则继续步骤 302。 303、在 M2M终端的应用层, 结合 MTC Server发送的数据传输配置信 息, 并按照预定的触发时刻随机化策略确定业务触发时刻。
具体地, 在本实施例中确定业务触发时刻的方式可以有如下两种: 1 )针对业务随机化配置信息中仅包含随机化粒度的情况, 可以通过以 下过程来确定业务触发时刻:
M2M 终端根据所述数据发送的起始时间和有效时长计算出数据发送 的时间区间, 然后根据所述随机化粒度将所述时间区间划分为多个时间间 隔, 并从所述多个时间间隔中随机选取一个时间间隔的起始时刻作为业务 触发时刻。
以前述的智能抄表业务为例, MTC server配置数据发送的起始时间是 9 时, 有效时长为 1 小时, 而随机化粒度为 36ms, 那么从 9时到 10时的这 一段时间就可以被划分为 100000 ( lh/36ms )个时间间隔; M2M终端从这 100000个时间间隔中等概率地选择其一作为业务触发时间间隔, 该业务触 发时间间隔的起始时刻即为业务触发时刻。 由概率论知识可以推断每一 M2M终端在任意一个时间间隔内发起智能抄表业务的概率均为 10— 5
2 )针对业务随机化配置信息中包含有随机化粒度和业务触发门限的情 况, 可以通过以下过程来确定业务触发时刻:
M2M 终端根据所述数据发送的起始时间和有效时长计算出数据发送 的时间区间, 然后根据所述随机化粒度将所述时间区间划分为多个时间间 隔, 并依次在所述多个时间间隔内等概率地生成 (0,1)范围内的随机数, 直 至出现小于所述业务触发门限的随机数, 则所述小于业务触发门限值的随 机数对应的当前时间间隔的起始时刻即为业务触发时刻。
仍然以前述的智能抄表业务为例, MTC server配置数据发送的起始时 间是 9时,有效时长为 1小时,而随机化粒度为 36ms,业务触发门限为 10-4, 那么从 9时到 10时的这一段时间就可以被划分为 100000 ( lh/36ms )个时 间间隔; M2M终端在任意一个时间间隔内均以等概率生成一个 (0,1)范围内 的随机数。 将该随机数与业务触发门限 10-4相比较, 若该随机数小于业务 触发门限 1 (T4, 则 M2M终端以当前时间间隔的起始时刻作为业务触发时刻 以便触发智能抄表业务; 反之, M2M终端等待下一业务触发时间间隔再生 成新的随机数, 并与所述业务触发门限进行比较。 在这种实现方式中, 每 一个 M2M终端在任意一个时间间隔内发起智能抄表业务的概率均为 10-4
304、 M2M 终端应用层在其确定的业务触发时刻向 RR ( Radio Resources, 无线资源)层发送业务触发请求。
305、 M2M终端 RR层在接收到所述业务触发请求后,按现有的随机接 入过程, 选择一接入脉沖向基站发送随机接入请求, 以触发业务建立过程。
在数据传输完成后, M2M终端就会退出当前的数据发送过程。
在数据发送的过程中, 若由于网络过载等原因, M2M终端收到了基站 下发的禁止接入指示, 则 M2M终端的 RR层在收到所述禁止接入指示后将 向应用层转发该禁止接入指示; 应用层收到禁止接入指示后, 将停止发送 业务请求。在 RR层接收到基站下发的允许接入指示后,会将所述允许接入 请求上报给应用层; 之后, 应用层将再次计算新的有效传输时长 (即 MTC server所配置的数据发送时间区间中的剩余部分), 并重新选择业务触发时 刻, 继续前述的数据传输过程。
本实施例中提供的网络接入的方法, 由终端侧应用层根据预定的策略 来确定一个随机的时刻作为业务触发时刻, 通过将业务触发时间随机化, 从而避免 M2M业务同时发起所造成的接入脉冲的突发尖峰,有效地解决了 随机接入信道的拥塞现象; 而且, 由终端自身随机地确定业务触发时刻, 就无需通过 M2M服务器下发信令来指派专门的接入时刻,降低了网络的信 令负载。
实施例三:
在实施例二中,由于 M2M终端应用层无法获知无线接口上接入信道的 配置情况, 因此无法使业务随机触发机制的使用效率达到最大。 比如, 当 前小区若同时配有两条随机接入信道,可同时为两个 M2M终端提供接入机 会, 而 M2M 终端应用层仅能在时间这一个维度上进行业务触发时刻的选 择, 这样就空置了 1/2的接入信道资源。 基于上述原因, 本实施例中提供了 一种基于 RR层控制的网络接入的方法来实现业务触发随机化机制。
结合图 4所示, 本实施例提供的网络接入的方法, 包括以下步骤:
401、 MTC Server向组内 M2M终端发送数据传输配置信息。
在本实施例中,所述数据传输配置信息中包含有 M2M终端进行数据发 送的起始时间和有效时长; 所述起始时间和有效时长共同限定了一个 M2M 终端可以进行数据发送的时间区间。 如果所述数据传输配置信息中不包含 起始时间, 则终端默认收到所述数据传输配置信息的时间即为数据发送的 起始时间。
402、 基站向所述 M2M终端广播 M2M业务随机化配置信息。
所述业务随机化配置信息包括随机化粒度、 或者随机化粒度和业务触 发门限。其中,所述随机化粒度可以为一固定的时间段,比如 1 TS( Time Slot, 时隙)、 2TS等等; 所述业务触发门限可配置为开区间(0,1)内任意值。
以智能抄表业务为例, MTC server可配置智能抄表终端在 9时至 10时 之间上报用电量信息; 同时, 基站还可以可指示当前数据传输的随机化粒 度为 1 TS ( 120/26ms )或者业务触发门限为 1/78000。
M2M终端可以在本地保存相应的配置信息, 并在下一次数据传输过程 中应用。
当然,随机化粒度和业务触发门限也可直接固化在 M2M终端中以节省 空口的传输资源; 此时, 则无需进行步骤 402, 在完成步骤 401之后直接执 行步骤 403。
403、 M2M 终端判断所述数据传输配置信息中的数据发送的起始时间 是否到达; 如果已经到达, 则执行步骤 404; 如果未到达, 则继续步骤 403。
404、 M2M终端的应用层向 RR层发送业务触发请求,该请求中携带有 数据发送的有效时长( 1小时)。
405、 M2M终端的 RR层在接收到应用层下发的所述数据发送的有效时 长之后, 结合其接收到的由基站下发的 M2M业务随机化配置信息,按照预 定的触发时刻随机化策略确定业务触发时刻。
具体地, 在本实施例中确定业务触发时刻的方式可以有如下两种:
1 )针对业务随机化配置信息中仅包含随机化粒度的情况, 可以通过以 下过程来确定业务触发时刻:
M2M 终端根据所述数据发送的起始时间和有效时长计算出数据发送 的时间区间, 然后根据所述随机化粒度将所述时间区间划分为多个时间间 隔, 并从所述多个时间间隔中随机选取一个时间间隔作为业务触发时间间 隔, 则该业务触发时间间隔的起始时隙即为业务触发时刻。
以前述的智能抄表业务为例, MTC server配置数据发送的起始时间是 9 时, 有效时长为 1小时, 同时基站指示的随机化粒度为 I TS ( 120/26ms ), 那么从 9时到 10时的这一段时间就可以被划分为 780000个时间间隔; M2M 终端从这 780000个时间间隔中等概率地选择其一作为业务触发时间间隔, 该业务触发时间间隔的起始时隙即为业务触发时刻。 由概率论知识可以推 断每一 M2M 终端在任意一个时隙内发起智能抄表业务的概率均为 1/780000»
2 )针对业务随机化配置信息中包含有随机化粒度和业务触发门限的情 况, 可以通过以下过程来确定业务触发时刻:
M2M 终端根据所述数据发送的起始时间和有效时长计算出数据发送 的时间区间, 然后根据所述随机化粒度将所述时间区间划分为多个时间间 隔, 并依次在所述多个时间间隔内等概率地生成 (0,1)范围内的随机数, 直 至出现小于所述业务触发门限的随机数, 则所述小于业务触发门限值的随 机数对应的当前时间间隔的起始时隙即为业务触发时刻。
仍然以前述的智能抄表业务为例, MTC server配置数据发送的起始时 间是 9 时, 有效时长为 1 小时, 同时基站指示的随机化粒度为 ITS ( 120/26ms ), 业务触发门限为 1Z78000; 从 9时到 10时的这一段时间就可 以被划分为 780000 ( Ih/1TS )个时间间隔; M2M终端在任意一个时间间隔 内均以等概率生成一个 (0,1)范围内的随机数。 将该随机数与业务触发门限 1/78000相比较, 若该随机数小于业务触发门限 1/78000, 则 M2M终端以当 前时间间隔的起始时隙作为业务触发时刻以便触发智能抄表业务; 反之, M2M终端等待下一时间间隔再生成新的随机数, 并与所述业务触发门限进 行比较。 在这种实现方式中,每一个 M2M终端在任意一个时隙内发起智能 抄表业务的概率均为 1/78000。
在本实施例中, 由 M2M终端 RR层确定的业务触发时刻, 实际对应标 准里的 "立即指派流程的触发时刻" (TS44.018 3.3.1.1.2 Initiation of the immediate assignment procedure )。
406、 M2M终端 RR层在其确定的业务触发时刻到达后,按现有的随机 接入过程, 选择一接入脉沖向基站发送随机接入请求, 以触发业务建立过 程。
在采用第一种方式确定业务触发时刻的方案中, M2M终端 RR层在所 述业务触发时刻到达之前可以先进入休眠状态, 这样可以节省电力资源。
在数据传输完成后, M2M终端就会退出当前的数据发送过程。
在数据发送的过程中, 若由于网络过载等原因, M2M终端收到了基站 下发的禁止接入指示; 之后, M2M终端 RR层需要监测基站的接入指示信 息, 并实时调整有效传输时长 (即 MTC server所配置的数据发送时间区间 中的剩余部分)。在接收到基站下发的允许接入指示后, M2M终端 RR层重 新选择业务触发时刻, 继续前述的数据传输过程。
本实施例中提供的网絡接入的方法, 由终端侧无线资源层( RR层)才艮 据预定的策略来确定一个随机的时刻作为业务触发时刻, 通过将业务触发 时间随机化, 从而避免 M2M业务同时发起所造成的接入脉沖的突发尖峰, 有效地解决了随机接入信道的拥塞现象; 而且, 由终端自身随机地确定业 务触发时刻, 就无需通过 M2M服务器下发信令来指派专门的接入时刻, 降 低了网络的信令负载。此外, 由于 RR层可以直接获取到无线接口上接入信 道的配置情况, 因此实时地调整其业务触发机制, 提高业务随机触发机制 的使用效率。
实施例四:
在本实施例中, 提出了一种通信系统内进行数据传输配置的业务随机 化触发方案。
结合图 5所示, 本实施例提供的网络接入的方法, 包括以下步骤:
501、 基站向组内 M2M终端广播数据传输配置信息。
在本实施例中,所述数据传输配置信息中包含有 M2M终端进行数据发 送的起始帧号和有效帧数。 如果所述数据传输配置信息中不包含起始帧号, 则终端默认收到所述数据传输配置信息的无线帧即为数据发送的起始帧。
此外, 所述数据传输配置信息中还可以包含业务随机化配置信息, 该 业务随机化配置信息包括业务触发门限。 其中, 所述业务触发门限可配置 为开区间(0,1)内任意值。
以智能抄表业务为例, MTC Server可配置智能抄表终端在 0到 9999 帧间上报用电量信息; 同时, 基站还可以指示当前数据传输的业务触发门 限为 1/1000.
M2M终端可以在本地保存相应的配置信息, 并在下一次数据传输过程 中应用。
当然,所述业务触发门限也可直接固化在 M2M终端中以节省空口的传 输资源。
502、 M2M 终端判断所述数据传输配置信息中的用于数据发送的起始 帧是否到达; 如果已经到达, 则执行步骤 503; 如果未到达, 则继续步骤 502。
503、 M2M终端的应用层向 RR层发送业务触发请求,该请求中携带有 数据发送的有效帧数。
504、 M2M终端的 RR层在接收到应用层下发的所述有效帧数之后,按 照预定的触发时刻随机化策略确定业务触发时刻。
具体地, 在本实施例中确定业务触发时刻的方式可以有如下两种: 1 )针对数据传输配置信息中仅包含起始帧号和有效帧数的情况, 可以 通过以下过程来确定业务触发时刻:
M2M 终端根据所述数据发送的起始帧号和有效帧数确定可用于数据 发送的多个有效帧, 然后从所述多个有效帧中随机选取一个, 所选帧对应 的接入时隙即为业务触发时刻。
以前述的智能抄表业务为例, 网络(基站 )配置数据发送的有效帧为 0 至 9999帧, 那么 M2M终端从这些有效帧中等 ^既率地选择其中一帧, 并以 所选帧对应的接入时隙作为业务触发时刻。 由概率论知识可以推断每一个 M2M终端在任意一时隙内发起智能抄表业务的概率均为 1/10000。
2 )针对数据传输配置信息中还包含业务随机化配置信息, 即所述数据 传输配置信息中还包含业务触发门限的情况, 可以通过以下过程来确定业 务触发时刻:
M2M 终端根据所述数据发送的起始帧号和有效帧数确定可用于数据 发送的多个有效帧, 然后依次在所述多个有效帧对应的接入时隙内等概率 地生成 (0,1)范围内的随机数, 直至出现小于所述业务触发门限的随机数, 则所述小于业务触发门限值的随机数对应的当前帧的接入时隙即为业务触 发时刻。
仍然以前述的智能抄表业务为例, 基站配置数据发送的有效帧为 0至 9999帧, 业务触发门限为 1/1000; M2M终端在任意一个有效帧对应的接入 时隙内均以等概率生成一个 (0, 1)范围内的随机数。 将该随机数与业务触发 门限 1/1000相比较, 若该随机数小于业务触发门限 1/1000, 则 M2M终端 以当前帧对应的接入时隙作为业务触发时刻以便触发智能抄表业务; 反之, M2M 终端等待下一帧再生成新的随机数, 并与所述业务触发门限进行比 较。在这种实现方式中, 每一个 M2M终端在任意一个时隙内发起智能抄表 业务的概率均为 1/1000。
在本实施例中, 由 M2M终端 RR层确定的业务触发时刻, 实际对应标 准里的 "立即指派流程的触发时刻" (TS44.018 3.3.1.1.2 Initiation of the immediate assignment procedure )。
505、 M2M终端 RR层在其确定的业务触发时刻到达后,按现有的随机 接入过程, 选择一接入脉沖向基站发送随机接入请求, 以触发业务建立过 程。
在采用第一种方式确定业务触发时刻的方案中, M2M终端 RR层在所 述业务触发时刻到达之前可以先进入休眠状态, 这样可以节省电力资源。
在数据传输完成后, M2M终端就会退出当前的数据发送过程。
本实施例中提供的网络接入的方法, 直接利用现有的通信系统来实现 M2M业务, 且由 M2M终端才艮据预定的策略来确定一个接入帧对应的时隙 作为业务触发时刻, 通过将业务触发时间随机化, 从而避免 M2M业务同时 发起所造成的接入脉沖的突发尖峰, 有效地解决了随机接入信道的拥塞现 象; 而且, 由终端自身随机地确定业务触发时刻, 就无需通过 M2M服务器 下发信令来指派专门的接入时刻, 降低了网络的信令负载。 此外, 由于 RR 层可以直接获取到无线接口上接入信道的配置情况, 因此实时地调整其业 务触发机制, 提高业务随机触发机制的使用效率。
实施例五:
对应上述网络接入的方法, 本实施例还提供了一种网络接入的装置, 如图 6所示, 包括确定单元 61、 接入单元 62及获取单元 63; 其中,
获取单元 63用于获取数据传输配置信息, 所述数据配置信息中包含有 数据发送的起始时间、 有效时长; 具体地, 所述数据发送的起始时间和有 效时长由 MTC Server或者基站配置并下发; 如果所述 MTC Server或者基 站下发的数据传输配置信息中没有携带数据发送的起始时间, 则获取单元 63会将收到所述数据传输配置信息的时间默认为数据发送的起始时间; 在所述数据传输配置信息中还可以包含随机化粒度、 或者随机化粒度 和业务触发门限; 所述随机化粒度和业务触发门限可以是由 MTC Server或 者基站配置并下发, 也可以是预设在所述网絡接入的装置内的。
确定单元 61结合所述数据发送的起始时间、 有效时长以及业务随机化 配置信息, 并按照预定的触发时刻随机化策略确定业务触发时刻; 在所确定的业务触发时刻到达时, 接入单元 62向基站发送随机接入清 求, 以触发业务建立过程。
在本实施例提供的网络接入的装置中, 还包括有位于应用层的触发单 元 64;
如果所述确定单元 61位于所述装置的无线资源层(RR层), 则所述触 发单元 64用于向无线资源层发送业务触发请求, 以触发所述位于 RR层的 确定单元 61使其执行确定业务触发时刻的操作;
如果所述确定单元 61位于所述装置的应用层, 则所述触发单元 64用 于在所述确定单元 61 确定的业务触发时刻向无线资源层发送业务触发请 求。
在本实施例提供的网络接入的装置中, 所述确定单元 61可以有如下实 现方式:
其一, 所述确定单元 61可以包括:
计算模块, 用于根据所述数据发送的起始时间和有效时长计算出数据 发送的时间区间;
划分模块, 用于根据所述随机化粒度将所述时间区间划分为至少一个 时间间隔;
选取模块, 用于从所述至少一个时间间隔中随机选取一个时间间隔, 则所选时间间隔的起始时刻即为业务触发时刻。
其二, 所述确定单元 61可以包括:
计算模块, 用于根据所述数据发送的起始时间和有效时长计算出数据 发送的时间区间;
划分模块, 用于根据所述随机化粒度将所述时间区间划分为至少一个 时间间隔;
生成模块, 用于依次在所述至少一个时间间隔内等概率地生成 (0,1)范 围内的随机数, 直至出现小于所述业务触发门限的随机数, 则当前时间间 隔的起始时刻即为业务触发时刻。
此外, 在本实施例提供的网络接入的装置中, 还可以包括判断单元 65, 用于判断所述数据发送的起始时间是否到达; 则,
所述确定单元 61需要在所述判断单元 65判断所述数据发送的起始时 间到达后, 按照预定的触发时刻随机化策略确定业务触发时刻。
本发明实施例提供的网络接入的装置, 由终端侧根据预定的策略来确 定一个随机的时刻作为业务触发时刻, 通过将业务触发时间随机化, 从而 避免 M2M业务同时发起所造成的接入脉冲的突发尖峰,有效地解决了随机 接入信道的拥塞现象; 而且, 由终端自身随机地确定业务触发时刻, 就无 需通过 M2M服务器下发信令来指派专门的接入时刻,降低了网络的信令负 载。
实施例六:
本发明实施例还提供了一种网络接入的系统, 如图 7 所示, 包括控制 端 71和终端 72; 其中,
所述控制端 71, 用于向所述终端 72发送数据传输配置信息; 所述终端 72, 用于结合所述数据传输配置信息, 并按照预定的触发时 刻随机化策略确定业务触发时刻; 在所述业务触发时刻到达时向基站发起 随机接入请求流程。
其中, 所述数据传输配置信息包含数据发送的起始时间和有效时长。 优选地, 所述数据传输配置信息还可以包含随机化粒度; 或者, 所述 数据传输配置信息还可以包含随机化粒度和业务触发门限。
上述随机化粒度和业务触发门限信息也可以直接固化在所述终端 72 中, 此时所述数据传输配置信息中就可以只包含数据发送的起始时间和有 效时长。
在本实施例中, 所述控制端 71是一逻辑概念, 其可以是 MTC Server, 也可以是所述基站中的一部分。
本发明实施例提供的网絡接入的系统, 由终端侧根据预定的策略来确 定一个随机的时刻作为业务触发时刻, 通过将业务触发时间随机化, 从而 避免 M2M业务同时发起所造成的接入脉沖的突发尖峰,有效地解决了随机 接入信道的拥塞现象; 而且, 由终端自身随机地确定业务触发时刻, 就无 需通过 M2M服务器下发信令来指派专门的接入时刻,降低了网络的信令负 载。
实施例七:
所有共享同一信道的 M2M终端都会在该信道上发送接入请求,当有大 量 M2M终端同时发送接入请求时会带来接入冲突; 因此, 在本实施例提供 的方案中将接入信道进行分组调度。
本发明实施例还提供了一种网络接入的方法, 如图 8 所示, 包括以下 步骤:
801、 获取终端分组信息, 以及每组终端分别对应的接入信道的分配信 息;
802、 才艮据所述终端分组信息和所述接入信道的分配信息, 在当前终端 对应的接入信道资源上发送接入请求。
上述各步驟的执行主体可以是 M2M终端。 同时, 上述接入信道的分配 信息可以是接入信道中帧的分配信息。
具体地, 网络侧将 M2M终端分組, 并决定将接入信道的不同帧分配给 不同的 M2M终端组; 然后将 M2M终端分组信息, 以及每组终端分别对应 的接入信道的帧分配信息广播给 M2M终端。 M2M终端在获取到相应的分 组信息及帧分配信息后, 在自己所属组对应的帧号上发送接入请求。 这样, 可以很大程度上减少大量终端同时在相同帧发送接入请求的冲突。
分组的方式可以是 居终端标识 (如 IMSI, 国际移动用户识别码)按 照一定算法进行分組。 分组信息可以是网络通过信令向 M2M 终端发出指 示, 当然也可以是配置好预存到 M2M终端中的。
一般情况下, 不同的终端组均以相同比例分享所述接入信道的帧资源, 如表 1所示; groupl group2 group3 groupN groupl group2 group3 groupN
当然, 对于某些执行高优先级的业务的终端来说, 可以通过改变其占 用接入信道中帧资源的比例来提高其接入网络的几率。 对高优先级的业务 可以调度的频繁些, 以保证 M2M 高优先级 /紧急业务数据可以及时发送。 如表 2所示, Groupl为优先级很高的告警业务, Group2和 Group3为普通 业务, 因此 Groupl发送接入请求的机会比其他组频繁。
表 2
Figure imgf000019_0001
为了更好地实现上述网络接入的方法, 本实施例中还提供了一种网络 接入的装置, 如图 9所示, 包括:
获取单元 91 , 用于获取终端分组信息, 以及每组终端分别对应的接入 信道的分配信息;
发送单元 92,用于根据所述终端分组信息和所述接入信道的分配信息, 在当前终端对应的接入信道资源上发送接入请求。
本发明实施例提供的网络接入的方法及装置, 通过将不同的终端进行 分组, 然后为不同组别的终端分配不同的帧以进行网络随机接入, 从而避 免 M2M业务同时发起所造成的接入脉冲的突发尖峰,有效地解决了随机接 入信道的拥塞现象; 而且, 利用本发明实施例提供的方案, 无需通过 M2M 服务器对每个终端逐一下发信令来指派专门的接入时刻, 降低了网络的信 令负载。 本发明实施例提供的网络接入的方法、 装置, 适用于所有无线通信系 统, 包括但不限于 GSM ( Global System for Mobile Communications , 全球 移动通讯系统)、 WCDMA ( Wideband Code Division Multiple Access, 宽带 码分多址 )、 TD-SCDMA ( Time Division-Synchronous Code Division Multiple Access, 时分同步码分多址)、 LTE ( Long Term Evolution,长期演进)、 Wimax ( Worldwide Interoperability for Microwave Access, 全球微波互联接入 )等。 通过以上实施方式的描述, 本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硬件平台的方式来实现, 当然也可以全部通过硬件 来实施。 基于这样的理解, 本发明的技术方案对背景技术做出贡献的全部 或者部分可以以软件产品的形式体现出来, 该计算机软件产品可以存储在 存储介质中, 如 ROM/RAM、 磁碟、 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 各个实施例或者实施例的某些部分所述的方法。
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 轻易想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发 明的保护范围应以权利要求的保护范围为准。

Claims

权 利 要 求
1、 一种网絡接入的方法, 其特征在于, 包括:
按照预定的触发时刻随机化策略确定业务触发时刻;
在所确定的业务触发时刻, 终端发起随机接入请求流程。
2、 根据权利要求 1所述的网络接入的方法, 其特征在于, 在所述按照 预定的触发时刻随机化策略确定业务触发时刻之前, 还包括:
终端的应用层向无线资源层发送业务触发奇求; 贝 'J,
所述按照预定的触发时刻随机化策略确定业务触发时刻为: 所述终端 的无线资源层按照预定的触发时刻随机化策略确定业务触发时刻。
3、 根据权利要求 2所述的网络接入的方法, 其特征在于, 所述业务触 发时刻为立即指派流程的触发时刻。
4、 根据权利要求 1所述的网络接入的方法, 其特征在于,
所述按照预定的触发时刻随机化策略确定业务触发时刻为: 终端的应 用层按照预定的触发时刻随机化策略确定业务触发时刻; 则,
在所述发起随机接入请求流程之前, 还包括:
所述终端的应用层在所确定的业务触发时刻向无线资源层发送业务触 发请求。
5、 根据权利要求 1所述的网络接入的方法, 其特征在于, 在所述按照 预定的触发时刻随机化策略确定业务触发时刻之前, 还包括:
获取数据传输配置信息, 所述数据传输配置信息中包含有数据发送的 起始时间、 有效时长。
6、 根据权利要求 5所述的网络接入的方法, 其特征在于, 所述数据传 输配置信息中还包含有随机化粒度; 所述按照预定的触发时刻随机化策略 确定业务触发时刻, 包括:
根据所述数据发送的起始时间和有效时长计算出数据发送的时间区 间;
根据所述随机化粒度将所述时间区间划分为至少一个时间间隔; 从所述至少一个时间间隔中随机选取一个时间间隔, 则所选时间间隔 的起始时刻即为业务触发时刻。
7、 根据权利要求 5所述的网络接入的方法, 其特征在于, 所述数据传 输配置信息中还包含有随机化粒度和业务触发门限; 则,
所述按照预定的触发时刻随机化策略确定业务触发时刻, 包括: 根据所述数据发送的起始时间和有效时长计算出数据发送的时间区 间;
根据所述随机化粒度将所述时间区间划分为至少一个时间间隔; 依次在所述至少一个时间间隔内等概率地生成 (0,1)范围内的随机数, 直至出现小于所述业务触发门限的随机数, 则当前时间间隔的起始时刻即 为业务触发时刻。
8、 根据权利要求 5所述的网络接入的方法, 其特征在于, 在所述获取 数据传输配置信息之后, 还包括:
判断所述数据传输配置信息中数据发送的起始时间是否到达; 所述按照预定的触发时刻随机化策略确定业务触发时刻为: 在所述数 据发送的起始时间到达后, 按照预定的触发时刻随机化策略确定业务触发 时刻。
9、 一种网络接入的装置, 其特征在于, 包括:
确定单元, 用于按照预定的触发时刻随机化策略确定业务触发时刻; 接入单元, 用于在所确定的业务触发时刻发起随机接入请求流程。
10、 根据权利要求 9 所述的网络接入的装置, 其特征在于, 还包括位 于所述装置的应用层的触发单元, 该触发单元用于向所述装置的无线资源 层发送业务触发请求; 且,
所述确定单元位于所述装置的无线资源层。
11、 根据权利要求 9 所述的网络接入的装置, 其特征在于, 所述确定 单元位于所述装置的应用层; 且,
所述装置还包括位于应用层的触发单元, 该触发单元用于在所述确定 单元确定的业务触发时刻向无线资源层发送业务触发请求。
12、 根据权利要求 9 所述的网络接入的装置, 其特征在于, 还包括获 取单元;
所述获取单元, 用于获取数据传输配置信息, 所述数据传输配置信息 中包含有数据发送的起始时间、 有效时长。
13、 根据权利要求 12所述的网络接入的装置, 其特征在于, 所述数据 传输配置信息中还包含有随机化粒度; 所述确定单元包括:
计算模块, 用于根据所述数据发送的起始时间和有效时长计算出数据 发送的时间区间;
划分模块, 用于根据所述随机化粒度将所述时间区间划分为至少一个 时间间隔;
选取模块, 用于从所述至少一个时间间隔中随机选取一个时间间隔, 则所选时间间隔的起始时刻即为业务触发时刻。
14、 根据权利要求 12所述的网絡接入的装置, 其特征在于, 所述数据 传输配置信息中还包含有随机化粒度和业务触发门限; 则,
所述确定单元包括:
计算模块, 用于根据所述数据发送的起始时间和有效时长计算出数据 发送的时间区间;
划分模块, 用于根据所述随机化粒度将所述时间区间划分为至少一个 时间间隔;
生成模块, 用于依次在所述至少一个时间间隔内等概率地生成 (0,1)范 围内的随机数, 直至出现小于所述业务触发门限的随机数, 则当前时间间 隔的起始时刻即为业务触发时刻。
15、 根据权利要求 12所述的网络接入的装置, 其特征在于, 还包括: 判断单元, 用于判断所述数据发送的起始时间是否到达; 则, 所述确定单元, 在所述判断单元判断所述数据发送的起始时间到达后, 按照预定的触发时刻随机化策略确定业务触发时刻。
16、 一种网 入的方法, 其特征在于, 包括:
获取终端分组信息, 以及每组终端分别对应的接入信道的分配信息; 根据所述终端分组信息和所述接入信道的分配信息, 在当前终端对应 的接入信道资源上发送接入请求。
17、 根据权利要求 16所述的网络接入的方法, 其特征在于, 所述接入 信道的分配信息为接入信道中帧的分配信息。
18、 根据权利要求 17所述的网络接入的方法, 其特征在于, 所述每组 终端分别对应的接入信道的帧分配信息中, 不同组的终端以相同比例分享 所述接入信道的帧;
或者, 执行高优先级业务的终端分配帧的比例高于执行普通业务的终 端。
19、 一种网 妻入的装置, 其特征在于, 包括:
获取单元, 用于获取终端分组信息, 以及每组终端分别对应的接入信 道的分配信息;
发送单元, 用于 居所述终端分组信息和所述接入信道的分配信息, 在当前终端对应的接入信道资源上发送接入请求。
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