WO2016000188A1 - 接入控制装置、接入装置及方法 - Google Patents

接入控制装置、接入装置及方法 Download PDF

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Publication number
WO2016000188A1
WO2016000188A1 PCT/CN2014/081304 CN2014081304W WO2016000188A1 WO 2016000188 A1 WO2016000188 A1 WO 2016000188A1 CN 2014081304 W CN2014081304 W CN 2014081304W WO 2016000188 A1 WO2016000188 A1 WO 2016000188A1
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WO
WIPO (PCT)
Prior art keywords
terminal
group
captured
preamble sequence
receiving
Prior art date
Application number
PCT/CN2014/081304
Other languages
English (en)
French (fr)
Inventor
赵悦莹
王宗杰
马雪利
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/081304 priority Critical patent/WO2016000188A1/zh
Priority to CN201480029783.4A priority patent/CN105900488A/zh
Priority to KR1020177001400A priority patent/KR101810820B1/ko
Priority to EP14896841.5A priority patent/EP3151609A4/en
Publication of WO2016000188A1 publication Critical patent/WO2016000188A1/zh
Priority to US15/392,879 priority patent/US10462728B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/02Access restriction performed under specific conditions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/002Transmission of channel access control information

Definitions

  • Access control device Access control device, access device and method
  • the present invention relates to the field of communications, and in particular, to an access control device, an access device, and a method. Background technique
  • Machine-to-Machine (M2M) technology is a networked application and service with machine as the terminal and intelligent interaction as the core.
  • M2M technology enables machine-to-machine collaboration through data transfer between machines and machines, greatly increasing productivity.
  • M2M services represented by smart meter reading, vehicle condition monitoring, vehicle networking, industrial monitoring, etc. have gradually become popular application businesses.
  • the main features of M2M technology are: There are a large number of terminals; different terminals use small data packet services for communication; different terminals use non-continuous transmission mode for communication, which requires low delay. Therefore, the Universal Mobile Telecommunications System (UMTS) is a communication system commonly used to implement M2M technology. When communicating between different terminals, it is transmitted by UMTS.
  • the UMTS can work in the CELL_FACH or Enhanced CELL_FACH Radio Resource Control (RRC) connection state of the FACH Forward Access Channel (FACH) for the small data packet service, and the terminal can be in the random access channel. (Random Access Channel, RACH for short) transmits data.
  • RRC Radio Resource Control
  • the terminal when the terminal needs to perform data transmission, the terminal first applies for the access resource of the network, and uses the access resource to send data after applying for the access resource; releasing the access resource after the data transmission ends, thereby enabling the UTMS to access Resources are used efficiently.
  • the terminal Since data is transmitted on the RACH, the terminal usually requests the use of the access resource by transmitting a preamble sequence. Specifically, when data needs to be transmitted, the terminal first sends a preamble sequence on an Access Slot (AS) boundary. The base station detects the preamble sequence, and sends an Acquisition Indicator (AI) to the terminal when detecting the preamble sequence sent by the terminal and having available access resources. If the terminal receives the AI within a predetermined time after the preamble sequence is transmitted, the terminal transmits data after receiving the AI_timing. If the terminal does not receive the AI within a predetermined time after the preamble sequence is sent, the preamble sequence is retransmitted at the next AS boundary, and the access resource is requested again.
  • AS Access Slot
  • AI Acquisition Indicator
  • the base station may receive a large number of terminals to transmit the preamble sequence at the same time, causing the base station to be overloaded.
  • the present invention provides an access control apparatus, where the apparatus includes: a receiving unit, configured to receive a first preamble sequence sent by a group terminal in a terminal group; The first preamble sequence received by the receiving unit determines the captured terminal group; the sending unit is configured to send a first acquisition indication to the terminal in the captured terminal group determined by the determining unit; And a second preamble sequence that is sent by the terminal in the captured terminal group after receiving the first acquisition indication sent by the sending unit; the determining unit is further configured to receive according to the receiving unit The second preamble sequence to determine the captured terminal; the sending unit is further configured to send a second capture indication to the captured terminal determined by the determining unit, where the second capture indication is used to indicate the Accessed by the captured terminal.
  • the receiving unit configured to receive a first preamble sequence sent by a group terminal in a terminal group, includes: the receiving unit, And a first preamble sequence for receiving a group identifier sent by the group leader terminal through the physical random access channel PRACH and including the terminal group.
  • the sending unit is configured to determine, in the group of the captured terminal that is determined by the determining unit And sending, by the terminal, the first acquisition indication, the sending unit, configured to send, by using the capture indicator channel AICH, the first capture indication that includes the group identifier of the captured packet.
  • the receiving unit is further configured to receive the The second preamble sequence that is sent by the terminal in the captured terminal group after receiving the first acquisition indication sent by the sending unit, includes: the receiving unit, configured to receive the The terminal receives the first capture A second preamble sequence including the signature sequence of the terminal transmitted through the PRACH after indication.
  • the sending unit is further configured to send the second acquisition indication to the captured terminal that is determined by the determining unit, where the sending unit is further configured to send, by using an AICH, a location that includes a signature sequence of the captured terminal.
  • the second capture indication is described.
  • the present invention further provides an access device, where the device includes: a receiving unit, configured to receive a first capture indication that is sent by a base station and includes a group identifier of the captured packet, and a sending unit, where And transmitting, by the receiving unit, the group identifier of the captured packet to the group identifier of the terminal group where the terminal is located, sending, to the base station, a second preamble sequence including a signature sequence of the terminal; And a second capture indication that includes the signature sequence of the captured terminal that is sent by the base station after determining the captured terminal according to the second preamble sequence; the sending unit is further configured to be in the receiving unit And when the received signature sequence of the captured terminal matches the signature sequence of the terminal, the data is sent to the base station.
  • the receiving unit configured to receive, by the base station, a first capture indication that includes a group identifier of the captured packet, including: the receiving a unit, configured to receive the first capture indication by using an acquisition indicator channel AICH.
  • the apparatus further includes: a generating unit, configured to generate the first preamble sequence that includes a group identifier of the terminal group;
  • the sending unit is further configured to send the first preamble sequence by using a physical random access channel (PRACH), and the receiving unit is configured to receive, by the base station, a first capture indication that includes a group identifier of the captured packet, where: a receiving unit, configured to receive, by using an AICH, the first acquisition indication, where the first acquisition indication is sent by the base station after determining the captured packet according to the first preamble sequence.
  • PRACH physical random access channel
  • the generating unit includes: a determining subunit, configured to determine a group identifier and a location of the terminal grouping a signature sequence of the terminal, the group identifier of the terminal group is a Had code sequence of a predetermined length; a generating subunit, configured to generate the first group of the group identifier grouped by the terminal and the signature sequence of the terminal Lead sequence.
  • the sending unit is further configured to When the signature sequence of the captured terminal does not match the signature sequence of the terminal, the first preamble sequence is retransmitted to the base station.
  • the present invention further provides an access control manner, where the method includes: receiving a terminal grouping a first preamble sequence transmitted by the group leader terminal; determining a captured terminal group according to the first preamble sequence; transmitting a first acquisition indication to a terminal in the captured terminal group; receiving a terminal in the terminal group a second preamble sequence transmitted after receiving the first acquisition indication; determining a captured terminal according to the second preamble sequence; transmitting a second acquisition indication to the captured terminal, where the second acquisition indication is used to indicate The captured terminal is accessed.
  • the first preamble sequence sent by the group terminal in the receiving terminal group includes: receiving the group long terminal by using physical random access
  • the channel PRACH transmits and includes a first preamble sequence of the group identity of the terminal packet.
  • the sending, by the terminal in the captured terminal, the first acquisition indication includes: The first capture indication containing the group identity of the captured packet is sent.
  • the receiving the terminal in the captured terminal group includes: receiving, after receiving, by the terminal in the captured packet, the second sequence of the signature sequence of the terminal that is sent by using the PRACH Lead sequence.
  • the transmitting the second acquisition indication to the captured terminal includes transmitting, by the AICH, the second capture indication that includes a signature sequence of the captured terminal.
  • the present invention provides an access method, the method includes: receiving, by a base station, a first acquisition indication that includes a group identifier of a captured packet; and if the group identifier of the captured packet is And transmitting, by the base station, a second preamble sequence including a signature sequence of the terminal to the base station; and receiving, by the base station, the And acquiring a second acquisition indication of the signature sequence of the terminal; if the signature sequence of the captured terminal is consistent with the signature sequence of the terminal, transmitting data to the base station.
  • the group identifier first capture indication that is sent by the receiving base station and includes the captured packet includes: receiving, by using an indicator channel, AICH, Determining, by the base station, that the first acquisition indication is sent by the base station according to the first preamble sequence, where the first preamble sequence is used by the group long terminal in the terminal group to pass the physical random access channel PRACH is sent.
  • the method before the receiving, by the receiving base station, the first capture indication that includes the group identifier of the captured packet, the method further includes: generating, by using the terminal group The first preamble sequence of the group identity; the first preamble sequence is sent by the PRACH; the group identity first capture indication that is sent by the receiving base station and includes the captured packet includes: receiving the first capture by using an AICH Instructing, the first acquisition indication is sent by the base station after determining the captured packet according to the first preamble sequence.
  • the generating, by the first preamble sequence that includes the group identifier of the terminal group, a group identifier and a signature sequence of the terminal, the group identifier of the terminal group is a Had code sequence of a predetermined length; generating the first preamble sequence formed by the group identifier grouped by the terminal and the signature sequence of the terminal .
  • the method further includes: if the The signature sequence of the terminal is inconsistent with the signature sequence of the terminal, and the first preamble sequence is retransmitted to the base station.
  • a receiving unit is configured to receive a first preamble sequence sent by a group terminal in a terminal group, and a determining unit, configured to determine, according to the first preamble sequence received by the receiving unit, a receiving terminal group, configured to send a first acquisition indication to a terminal in the captured terminal group determined by the determining unit, where the receiving unit is further configured to receive a terminal in the captured terminal group Receiving a second preamble sequence that is sent after the first acquisition indication sent by the sending unit; the determining unit is further configured to determine a captured terminal according to the second preamble sequence received by the receiving unit; The sending unit is further configured to send a second acquisition indication to the captured terminal determined by the determining unit, where the second acquisition indication is used to indicate that the captured terminal accesses.
  • the process of the terminal competing for accessing resources changes from one-stage competition to two-stage competition.
  • the base station only receives the first preamble sequence sent by each group leader or the second preamble sequence sent by the terminal in the captured packet at a time, which can greatly reduce the base station.
  • the number of preamble sequences received is reduced, and the load of the base station is effectively reduced.
  • FIG. 1 is a flow chart of an embodiment of an access control apparatus according to the present invention.
  • FIG. 2A is a flowchart of another embodiment of an access device according to the present invention.
  • FIG. 2B is a flowchart of another embodiment of an access device according to the present invention
  • 3 is a flowchart of an embodiment of an access control method according to the present invention
  • FIG. 4 is a schematic diagram of an embodiment of an access method according to the present invention
  • FIG. 6 is a schematic diagram of another embodiment of an access method according to the present invention
  • FIG. 7 is a schematic diagram of another embodiment of an access control apparatus according to the present invention
  • all terminals that need to access the target base station can be divided into several terminal groups according to a preset grouping rule.
  • the preset grouping rule may be: grouping terminals that transmit the same type of data as one terminal group, or terminals located in the same geographical area as a terminal grouping, or setting a terminal grouping in a network rule.
  • a terminal is selected from each terminal group according to a preset selection rule as a group terminal of the terminal group.
  • the preset rule may be: selecting any one of the terminals as the group terminal of the terminal group, or selecting the group terminal according to the channel environment of the terminal, or setting the group terminal when the network rule is used.
  • the terminal grouping may include only the group terminal, or may include more than one group member terminal in addition to the group terminal.
  • Each terminal group has a unique corresponding group identifier, and each terminal also has a corresponding signature sequence.
  • the access control device of the present invention will first be described below.
  • the access control device may be set in a base station.
  • FIG. 1 is a schematic diagram of an embodiment of an access control apparatus according to the present invention.
  • the access control apparatus includes: a receiving unit 101, a determining unit 102, and a transmitting unit 103.
  • the receiving unit 101 is configured to receive a first preamble sequence sent by the group terminal in the terminal group. [44] In an optional manner, the terminal in the terminal group first passes the physical random access channel (Physical Random Access Channel, short for the group terminal in the terminal group where the terminal is located before performing data transmission.
  • Physical Random Access Channel Physical Random Access Channel
  • the PRACH transmits a first preamble sequence to compete for access resources for terminals within the terminal group.
  • the receiving unit 101 receives the first preamble sequence.
  • the first preamble sequence may include a group identifier of the terminal group.
  • the first preamble may be composed of a signature sequence of the group terminal and a group identifier of the terminal group.
  • the length of the signature sequence of the group terminal may be a preset sequence of 16 bits.
  • the group identifier of the terminal packet is composed of a Hadamard sequence which can be N bits long, wherein N is greater than 0, and the length of N is determined by the number of terminal packets and the number of terminals in the terminal packet.
  • the sequence of 16+N bits is repeated M times to form a first preamble sequence of 4096 bits, and M is a quotient of 4096 by (16+N).
  • a 16-bit queue length terminal signature sequence plus a 16-bit group identifier may be repeated 128 times to form a 4096-bit first preamble sequence.
  • the determining unit 102 is configured to determine a captured terminal group according to the first preamble sequence received by the receiving unit 101.
  • the receiving unit 101 may receive one or more first preamble sequences within a certain time.
  • the determining unit 102 may group the terminals corresponding to the first preamble sequence into Capture the packet.
  • the determining unit 102 may determine, according to a predetermined determining rule, a first terminal sequence corresponding to the terminal group according to the received signal to noise ratio of the first preamble sequence.
  • the packet is captured.
  • the sending unit 103 is configured to send a first capture indication to the terminal in the captured terminal group determined by the determining unit 102.
  • the transmitting unit 103 acquires the group identifier of the captured packet from the first preamble sequence, and then generates and transmits a first capture indication including the group identifier of the captured packet.
  • the sending unit 103 may send the first acquisition indication to each terminal by using the AICH.
  • the sending unit 103 may set the group identifier to be sent on the 1024 chips reserved by the AICH.
  • the group identifier of the captured packet of length N bits may be repeated per bit to form a sequence of 2N bits long, and then the captured packet is acquired by using the same spreading factor and modulation method as the existing AICH.
  • the group ID is sent.
  • the receiving unit 101 is further configured to receive, by the terminal in the terminal group, the sending unit.
  • the terminal within the captured packet also needs to contend for access resources.
  • the terminal within the captured packet may contend for the access resource by transmitting a second preamble sequence, where the second preamble sequence includes the signature sequence of the terminal.
  • the receiving unit 101 receives a second preamble sequence transmitted by each terminal.
  • the determining unit 102 is further configured to determine the captured terminal according to the second preamble sequence received by the receiving unit 101.
  • the determining unit 102 determines the process of the captured terminal according to the second preamble sequence, which is similar to the method for determining the accessible terminal according to the preamble sequence in the prior art, and details are not described herein again.
  • the transmitting unit 103 is further configured to send a second capture indication to the captured terminal determined by the determining unit 102, where the second capture indication is used to indicate that the captured terminal accesses.
  • the sending unit 103 sends, by using the AICH, a signature sequence second capture indication that includes the captured terminal.
  • the second acquisition indication is similar to the transmission method of the capture indication in the prior art, and will not be described again here.
  • the captured terminal receives the second acquisition indication and is separated by a predetermined time, the data that it needs to transmit is transmitted through the PRACH.
  • the base station receives data transmitted by the captured terminal through the PRACH. The specific process is similar to the method of terminal access in the prior art, and will not be described here.
  • the access control apparatus may receive a first preamble sequence sent by a group leader terminal in a terminal group; determine a captured terminal group according to the first preamble sequence; Transmitting, by the terminal in the terminal group, a first acquisition indication; receiving a second preamble sequence sent by the terminal in the terminal group after receiving the first acquisition indication; determining, according to the second preamble sequence, a captured terminal; The captured terminal sends a second acquisition indication, where the second acquisition indication is used to indicate that the captured terminal is accessed.
  • the process of the terminal competing for accessing resources from one competition to two competitions, can not only reduce the total number of preamble sequences received by the base station, but also reduce the maximum number of preamble sequences that the base station may receive at the same time. Thereby, the load of the base station can be effectively reduced.
  • the reduction in the number of preamble transmissions can also reduce the energy consumed during the data transmission process.
  • the access device can be set in the terminal.
  • [57] 2A is a schematic diagram of an embodiment of the inventive access device.
  • the access device includes: The receiving unit 201 and the transmitting unit 202 are received.
  • the receiving unit 201 is configured to receive a first capture indication that is sent by the base station and includes a group identifier of the captured packet.
  • the receiving unit 201 may directly include, by using an AICH, the first acquisition indication, where the first acquisition indication is sent by a base station according to a group terminal that is configured by the terminal where the terminal is located.
  • the first preamble sequence is determined to be generated and transmitted after the packet is captured.
  • the sending unit 202 is configured to: when the group identifier of the captured packet received by the receiving unit 201 is consistent with the group identifier of the terminal group where the terminal is located, send the terminal signature sequence to the base station.
  • the second preamble sequence is configured to: when the group identifier of the captured packet received by the receiving unit 201 is consistent with the group identifier of the terminal group where the terminal is located, send the terminal signature sequence to the base station. The second preamble sequence.
  • the group identifier of the captured packet is consistent with the group identifier of the terminal group, it indicates that the terminal in the terminal group can perform data transmission in the current data transmission time slot. However, since the terminal cannot determine whether there are other terminals in the terminal group that need to perform data transmission, in order to prevent collision, the terminal needs to compete with other group member terminals in the terminal group to access the access resources, so the sending unit 202 needs to send the second. The preamble sequence competes for access resources. [63] If the group identifier of the captured packet is inconsistent with the group identifier of the terminal packet, it indicates that in the secondary data transmission time slot, the terminal in the terminal packet cannot perform data transmission. At this time, the receiving unit 201 needs to wait to receive the first capture indication again.
  • the receiving unit 201 is further configured to receive, by the base station, a second sequence that includes the signature sequence of the captured terminal that is sent after the base station determines the captured terminal according to the second preamble sequence sent by the sending unit 202. Capture indication.
  • the base station sends the second capture indication by using the AICH, and the receiving unit 201 receives the second capture indication.
  • the specific transmission process of the second capture indication has been described in the foregoing embodiment and will not be described here.
  • the sending unit 202 is further configured to: when the signature sequence of the captured terminal received by the receiving unit is consistent with the signature sequence of the terminal, send data to the base station.
  • the signature sequence of the captured terminal is consistent with the signature sequence of the terminal, it indicates that the terminal competes for the access resource successfully, and the data transmission may be performed. After the predetermined duration specified by the protocol, the sending unit 202 may pass. PRACH sends data.
  • FIG. 2B it is a schematic diagram of another embodiment of an access device of the present invention.
  • the access device if the access device is used to implement the terminal terminal access in the terminal group, the access device further includes: a generating unit 203, in addition to the receiving unit 201 and the sending unit 202. .
  • the generating unit 203 is configured to generate the first preamble sequence that includes the group identifier of the terminal group.
  • the first preamble sequence is first generated by the generating unit 203, where the first preamble sequence may include a group identifier of the terminal grouping.
  • the first preamble may be composed of a group leader terminal signature sequence and a group identifier of the terminal group.
  • the sending unit 202 is further configured to send the first preamble sequence by using a PRACH.
  • the sending unit 202 sends the first preamble sequence to the base station by using the PRACH, and all the terminals in the terminal group compete for access resources.
  • the receiving unit 201 is further configured to receive the first acquisition indication by using an AICH. Similarly, the first acquisition indication is sent by the base station by using the AICH after determining the captured packet according to the first preamble sequence.
  • the sending unit 202 needs to send the first preamble sequence again, and the terminal in the terminal group contends for the access resource. It should be noted that the sending interval of the first preamble sequence sent by the sending unit 202 must be greater than or equal to the sending time interval between the preamble sequence and the preamble sequence specified by the protocol in the existing PRACH procedure. . That is: t > t.
  • the group leader terminal may raise the transmission power of the first preamble sequence when transmitting the first preamble sequence again.
  • the leader terminal may repeatedly transmit the transmit power to repeatedly transmit the first preamble sequence until the group identifier of the captured packet matches the group identifier of the terminal packet or reaches the maximum allowed number of transmissions.
  • the process of the terminal competing for accessing resources can not only reduce the total number of preamble sequences received by the base station, but also reduce the preamble sequence that the base station may receive simultaneously.
  • the maximum number can effectively reduce the load on the base station.
  • the reduction in the number of transmissions of the preamble sequence can also reduce the energy consumed by the data transmission process.
  • the access control method of the present invention can be performed by a base station in a UTMS system.
  • Step 301 Receive a first preamble sequence sent by the group terminal in the terminal group.
  • the terminal Before performing data transmission, the terminal first sends a first preamble sequence through the PRACH by the group leader terminal in the terminal group where the terminal is located, so that the terminal competes for access resources.
  • the first preamble sequence may include a group identifier of the terminal grouping.
  • the first preamble may be composed of a group leader terminal signature sequence and a group identifier of the terminal group. The structure and manner of generation of the first preamble sequence have been described in the foregoing embodiments and will not be described again.
  • Step 302 Determine a captured packet according to the first preamble sequence.
  • the base station may receive one or more first preamble sequences within a certain period of time.
  • the first preamble sequence may be used.
  • the corresponding terminal is grouped into captured packets.
  • one of the first preamble sequence corresponding terminal groups may be selected as the captured packet according to a predetermined determination rule, for example, according to the received signal to noise ratio of the first preamble sequence.
  • Step 303 Send a first capture indication to the terminal in the captured terminal group.
  • the base station may first acquire the group identifier of the captured packet from the first preamble sequence sent by the leader terminal of the captured packet, and then generate the first group identifier including the captured packet.
  • the indication is captured and sent for the first capture indication.
  • the base station may send the first acquisition indication to each terminal through the AICH.
  • the first acquisition indication may be sent on the 1024 chips reserved by the AICH.
  • the first acquisition indication of length N bits may be repeated every bit to form a sequence of 2N bits long, and then spread transmission is performed using the same OVSF code with a spreading factor of 1024 /N as the existing AICH.
  • Step 304 Receive a second preamble sequence sent by the terminal in the terminal group after receiving the first acquisition indication.
  • the terminal within the captured packet also needs to compete for access resources.
  • the terminal in the captured packet may use the second preamble sequence to compete for access resources.
  • the source, wherein the second preamble sequence comprises a signature sequence of the terminal.
  • the base station receives the second preamble sequence sent by each terminal.
  • Step 305 Determine a captured terminal according to the second preamble sequence.
  • Step 306 Send a second acquisition indication to the captured terminal, where the second acquisition indication is used to indicate that the captured terminal is accessed.
  • the base station transmits a signature sequence second capture indication including the captured terminal through the AICH.
  • the second capture indication is similar to the transmission method of the first capture indication, and will not be described again here.
  • the data that it needs to transmit is transmitted through the PRACH.
  • the base station receives data transmitted by the captured terminal through the PRACH.
  • the specific process is similar to the method of data reception in the prior art, and will not be described here. It should be noted that the foregoing step 104 to step 106 are similar to the terminal random access procedure in the prior art. For details, refer to the terminal random access procedure in the prior art.
  • the access control apparatus may receive a first preamble sequence sent by a group leader terminal in a terminal packet; determine a captured terminal group according to the first preamble sequence; Transmitting, by the terminal in the terminal group, a first acquisition indication; receiving a second preamble sequence sent by the terminal in the terminal group after receiving the first acquisition indication; determining, according to the second preamble sequence, a captured terminal; The captured terminal sends a second acquisition indication, where the second acquisition indication is used to indicate that the captured terminal is accessed.
  • the process of the terminal competing for accessing resources from one competition to two competitions, can not only reduce the total number of preamble sequences received by the base station, but also reduce the maximum number of preamble sequences that the base station may receive at the same time. Thereby, the load of the base station can be effectively reduced.
  • the reduction in the number of preamble transmissions can also reduce the energy consumed during the data transmission process.
  • FIG. 4 is a flowchart of another embodiment of a method for accessing a terminal in a terminal group according to the present invention. The method includes the following steps:
  • Step 401 Receive a first capture indication that is sent by the base station and includes a group identifier of the captured packet.
  • the method further includes: competing for accessing the resource by the terminal in the terminal group: generating a group identifier including the terminal group Said a first preamble sequence; transmitting the first preamble sequence by PRACH.
  • the first acquisition indication is generated and transmitted by the base station after determining the captured packet according to the first preamble sequence sent by the terminal.
  • the first acquisition indication may be directly received through the AICH, wherein the first acquisition indication is determined by the base station to determine a captured packet according to the first preamble sequence After transmitting, the first preamble sequence is sent by the group leader terminal in the terminal group by PRACH.
  • Step 402 If the group identifier of the captured packet is consistent with the group identifier of the terminal group where the terminal is located, send a second preamble sequence including the signature sequence of the terminal to the base station.
  • the terminal needs to compete with other group members in the terminal group for accessing resources.
  • the manner of competing for accessing resources is to send a second preamble sequence.
  • the group leader terminal needs to send the first preamble sequence again, and the terminal in the terminal group contends for accessing resources.
  • Step 403 Receive a second capture indication of the signature sequence of the captured terminal that is sent by the base station after determining the captured terminal according to the second preamble sequence.
  • the base station may send the second acquisition indication by using the AICH, and the terminal receives the second acquisition indication.
  • the specific form and transmission mode of the second capture indication have been described in the foregoing embodiments and will not be described here.
  • Step 404 If the signature sequence of the captured terminal is consistent with the signature sequence of the terminal, send data to the base station.
  • the signature sequence of the captured terminal is consistent with the signature sequence of the group member terminal, it indicates that the terminal competes for the access resource successfully, can perform data transmission, and transmits data through the PRACH after a predetermined period of time elapses.
  • the process of the terminal competing for accessing resources is changed from one competition to two competitions, thereby greatly reducing the number of preamble sequences received by the base station, thereby effectively reducing the base station. Load.
  • FIG. 5 is a flowchart of another embodiment of an access method according to the present invention, where the method includes the following steps:
  • Step 501 The first acquisition indication is received by the AICH, where the first acquisition indication is sent by the base station according to the first preamble sequence, and the first preamble sequence is grouped by the terminal.
  • the leader terminal is sent via PRACH.
  • Step 502 If the group identifier of the captured packet is consistent with the group identifier of the terminal group, send a second preamble sequence to the base station by using a PRACH, where the second preamble sequence includes the group member terminal. Signature sequence.
  • Step 503 Receive, by the AICH, a second acquisition indication, where the acquisition indication is sent by the base station after determining the captured terminal according to the second preamble sequence, where the second acquisition indication includes a signature sequence of the captured terminal.
  • Step 504 If the signature sequence of the captured terminal is consistent with the signature sequence of the group member terminal, the data is sent by PRACH.
  • the process of the terminal competing for accessing resources is changed from one competition to two competitions, thereby greatly reducing the number of preamble sequences received by the base station, thereby effectively reducing the base station. Load.
  • the reduction in the number of transmissions of the preamble sequence can also reduce the energy consumed by the data transmission process.
  • FIG. 6 is a flowchart of another embodiment of an access method according to the present invention.
  • the method includes the following steps: [118] 601: Generate a first preamble sequence including a group identifier of a terminal group. [119] 602. Send a first preamble sequence by using PRACH.
  • [120] 603. Receive, by using an AICH, a group identity first acquisition indication that includes the captured packet, where the first acquisition indication is sent by the base station according to the first preamble sequence to determine the captured packet, and then sent by using the AICH.
  • the group leader terminal needs to send the first preamble sequence again, and the terminal in the terminal group contends for the access resource.
  • the group leader terminal may raise the transmission power of the first preamble sequence when transmitting the first preamble sequence again.
  • the leader terminal may repeatedly transmit the transmit power to repeatedly transmit the first preamble sequence until the group identifier of the captured packet matches the group identifier of the terminal packet or reaches the maximum allowed number of transmissions.
  • the transmission interval of the first preamble sequence sent by the group terminal twice must be greater than or equal to the transmission time interval between the preamble sequence and the preamble sequence specified by the protocol in the existing PRACH procedure: Pp — Pp ⁇ t p — p , mi
  • [125] 605. Receive, by the AICH, a second acquisition indication, where the acquisition indication is sent by the base station after determining the captured terminal according to the second preamble sequence, where the second acquisition indication includes a signature sequence of the captured terminal.
  • the process of the terminal competing for accessing resources is changed from one competition to two competitions, so that the number of preamble sequences received by the base station can be greatly reduced, thereby effectively reducing the load of the base station.
  • the reduction in the number of transmissions of the preamble sequence can also reduce the energy consumed by the data transmission process.
  • FIG. 7 is a schematic diagram of another embodiment of an access control apparatus according to the present invention.
  • the device includes: a processor 701, a memory 702, a communication interface 703, and the processor 701, the memory 702 and the communication interface 703 are connected by a bus 704.
  • the bus 704 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.
  • the memory 702 is used to store programs.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 702 may include a random access memory (RAM) memory, and may also include a non-volatile memory (Non-Volatile Memory). For example at least one disk storage.
  • the processor 701 executes a program stored in the memory 702, configured to: receive, by using a communication interface 703, a first preamble sequence sent by a group leader terminal in a terminal group; and determine a captured terminal according to the first preamble sequence. Transmitting, by the communication interface 703, a first acquisition indication to a terminal in the captured terminal group; receiving, by the communication interface 703, a second preamble sequence sent by the terminal in the terminal group after receiving the first acquisition indication Determining the captured terminal according to the second preamble sequence; transmitting a second acquisition indication to the captured terminal by using the communication interface 703, where the second acquisition indication is used to indicate that the captured terminal is accessed.
  • the receiving, by the communication interface 703, the first preamble sequence sent by the group leader terminal in the terminal group includes: receiving, by using the communication interface 703, the group leader terminal by physical random connection The first preamble sequence transmitted by the inbound channel PRACH and containing the group identity of the terminal packet.
  • the sending, by the communication interface 703, the first acquisition indication to the terminal within the captured terminal group includes: transmitting, by using the acquisition indicator channel AICH, by the communication interface 703, including the captured The first capture indication of the group identification of the packet.
  • the receiving, by the communication interface 703, the second preamble sequence sent by the terminal in the captured terminal group after receiving the first acquisition indication includes: receiving, by using the communication interface 703 The second preamble sequence of the signature sequence of the terminal sent by the PRACH after the terminal in the captured packet receives the first acquisition indication.
  • the sending, by the communication interface 703, the second acquisition indication to the captured terminal includes: transmitting, by using the communication interface 703, the AICH including the signature sequence of the captured terminal The second capture indication.
  • the device includes: a processor 801, a memory 802, and a communication interface 803.
  • the processor 801, the memory 802, and the communication interface 803 are connected by a bus 804.
  • the bus 804 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 6, but it does not mean that there is only one bus or one type of bus.
  • the memory 802 is used to store programs. Specifically, the program may include program code, and the program generation The code includes computer operating instructions.
  • the memory 802 may include a Random Access Memory (RAM) memory, and may also include a Non-Volatile Memory, such as at least one disk storage.
  • RAM Random Access Memory
  • the processor 801 executes a program stored in the memory 802, configured to: receive, by using the communication interface 803, a first capture indication that is sent by the base station and includes a group identifier of the captured packet; if the group identifier of the captured packet Consistent with the group identifier of the terminal group in which the terminal is located, the second preamble sequence including the signature sequence of the terminal is transmitted to the base station by using the communication interface 803; and the base station is determined by the communication interface 803 to be determined according to the second preamble sequence a second acquisition indication that includes a signature sequence of the captured terminal after the terminal is captured; and if the signature sequence of the captured terminal matches the signature sequence of the terminal, the communication interface 803 is used to send data to the base station.
  • the receiving, by the communication interface 803, the first identifier indication of the group identifier that includes the captured packet sent by the base station includes: receiving, by using the communication interface 803, by using an indicator channel AICH. Determining, by the first base station, that the first acquisition indication is sent by the base station according to the first preamble sequence, where the first preamble sequence is physically randomized by the group leader terminal in the terminal group Channel PRACH transmission.
  • the method before the receiving, by the communication interface 803, the first acquisition indication that is sent by the base station and includes the group identifier of the captured packet, the method further includes: generating a group identifier that includes the terminal grouping
  • the first preamble sequence is transmitted by the PRACH by using the communication interface 803;
  • the receiving, by the communication interface 803, the group identity first capture indication that is sent by the base station and including the captured packet includes: using a communication interface
  • the 803 receives the first acquisition indication by using an AICH, where the first acquisition indication is sent by the base station after determining the captured packet according to the first preamble sequence.
  • the receiving, by using the communication interface 803, the second preamble sequence sent by the terminal in the captured terminal group after receiving the first acquisition indication includes: receiving by using the communication interface 803. After receiving the first acquisition indication, the terminal in the captured packet transmits a second preamble sequence including a signature sequence of the terminal through the PRACH by using the communication interface 803.
  • the transmitting, by using the communication interface 803, the sending of the second acquisition indication to the captured terminal comprises: transmitting, by using the communication interface 803, the identifier including the signature sequence of the captured terminal by using an AICH The second capture indication.

Abstract

本申请提供了接入控制装置、接入装置及方法,所述接入控制装置包括:接收单元,用于接收第一前导序列;确定单元,用于确定被捕获终端分组;发送单元,用于发送第一捕获指示;所述接收单元,还用于接收第二前导序列;所述确定单元,还用于确定被捕获终端;所述发送单元,还用于发送第二捕获指示,所述第二捕获指示用于指示所述被捕获终端接入。采用本发明,M2M网络中的终端竞争接入资源的过程,从一阶段竞争转变为两阶段竞争,基站每次只接收各个组长发送的第一前导序列或者被捕获分组内终端发送的第二前导序列,可以大大减少基站每次所接收到的前导序列数量,而有效降低基站的负载。

Description

接入控制装置、 接入装置及方法 技术领域
[01] 本发明涉及通信领域, 尤其涉及接入控制装置、 接入装置及方法。 背景技术
[02] 机器对机器 ( Machine-To-Machine, 简称 M2M) 技术是一种以机器作为终端, 以智能交互作为核心的、 网络化的应用与服务。 M2M技术通过机器与机器之间的数 据传输, 实现机器与机器之间协同工作, 极大地提高生产效率。 随着移动通信技术的 发展, 以智能抄表、 车况监控、 车联网、 工业监控等为代表的 M2M业务逐渐成为了 热门应用业务。
[03] M2M技术的主要特点在于: 终端数量众多; 不同的终端之间采用小数据包业务 进行通信; 不同的终端在进行通信时采用非连续传输方式, 对时延要求低。 因此通用 移动通信系统 (Universal Mobile Telecommunications System,简称 UMTS)就成为实现 M2M技术通常所采用的通信系统, 不同终端之间进行通信时, 由 UMTS进行发送。 UMTS针对小数据包业务可以工作在前向接入信道(FACH Forward Access Channel, 简称 FACH) 的 CELL_FACH或者 enhanced CELL_FACH无线资源控制协议 (Radio Resource Control, 简称 RRC) 连接态, 终端可以在随机接入信道 (Random Access Channel, 简称 RACH) 上传输数据。 gp, 终端在需要进行数据传输时, 首先申请使 用网络的接入资源,在申请到接入资源后使用接入资源发送数据; 在数据传输结束后 释放接入资源, 从而可以使 UTMS的接入资源得到高效利用。
[04] 由于数据在 RACH上传输, 因此终端通常采用发送前导序列的方式请求使用接 入资源。 具体来说, 当需要传输数据时, 终端首先在接入时隙 (Access Slot, 简称 AS ) 边界发送前导序列。 基站对前导序列进行检测, 在检测到该终端发送的前导序 列, 并且有可以的接入资源时, 发送捕获指示 (Acquisition Indicator, 简称 AI)给该 终端。 如果终端在前导序列发送后预定时间内接收到 AI, 则终端在接收到 AI—定时 间后发送数据。 如果为终端在前导序列发送后预定时间内未接收到 AI, 那么在下一 个 AS边界重新发送前导序列, 再次请求使用接入资源。
[05] 然而在可用 RACH接入资源有限的情况下, 但 M2M终端数量众多时, 可能会 出现多个的终端同时请求使用接入资源的情况, 例如, 在车况监控系统中, 在特定时 刻可能会有大量的车载终端同时向服务器上报车况数据。在此情况下,基站可能会同 时接收到大量终端发送前导序列, 造成基站负载过重。进一步, 由于在同一时刻允许 接入网络的终端数量有限,因此会有大量的终端在前导序列发送后的预定时间内收不 到 AI; 大量未收到 AI的终端, 会重发前导序列, 再次请求使用接入资源, 从而进一 步加重基站的负载。 发明内容
[06] 本发明实施例提供了接入控制装置、 接入装置及方法, 以解决现有接入方法会 导致基站负载过重的问题。 [07] 第一方面, 本发明提供了一种接入控制装置, 所述装置包括: 接收单元, 用于 接收终端分组内的组长终端发送的第一前导序列; 确定单元,用于根据所述接收单元 接收到的所述第一前导序列确定被捕获终端分组; 发送单元,用于向所述确定单元确 定的所述被捕获终端分组内的终端发送第一捕获指示; 所述接收单元,还用于接收所 述被捕获终端分组内的终端在接收到所述发送单元发送的所述第一捕获指示后发送 的第二前导序列; 所述确定单元,还用于根据所述接收单元接收到的所述第二前导序 列确定被捕获终端; 所述发送单元,还用于向所述确定单元确定的所述被捕获终端发 送第二捕获指示, 所述第二捕获指示用于指示所述被捕获终端接入。
[08] 结合第一方面, 在第一方面第一种可能的实现方式中, 所述接收单元, 用于接 收终端分组内的组长终端发送的第一前导序列, 包括: 所述接收单元, 用于接收由所 述组长终端通过物理随机接入信道 PRACH发送且包含所述终端分组的组标识的第一 前导序列。
[09] 结合第一方面第一种可能的实现方式, 在第一方面第二种可能的实现方式中, 所述发送单元,用于向所述确定单元确定的所述被捕获终端分组内的终端发送第一捕 获指示, 包括: 所述发送单元, 用于通过捕获指示符信道 AICH发送包含所述被捕获 分组的组标识的所述第一捕获指示。
[10] 结合第一方面第一种可能的实现方式或第一方面第二种可能的实现方式, 在第 一方面第三种可能的实现方式中,所述接收单元,还用于接收所述被捕获终端分组内 的终端在接收到所述发送单元发送的所述第一捕获指示后发送的第二前导序列, 包 括: 所述接收单元,还用于接收所述被捕获分组内的所述终端在接收到所述第一捕获 指示后通过 PRACH发送的包含所述终端的签名序列的第二前导序列。
[11] 结合第一方面第一种可能的实现方式、 第一方面第二种可能的实现方式或第一 方面第三种可能的实现方式, 在第一方面第四种可能的实现方式中, 所述发送单元, 还用于向所述确定单元确定的所述被捕获终端发送第二捕获指示,包括: 所述发送单 元, 还用于通过 AICH发送包含所述被捕获终端的签名序列的所述第二捕获指示。
[12] 第二方面, 本发明还提供了一种接入装置, 所述装置包括: 接收单元, 用于接 收基站发送的包含被捕获分组的组标识的第一捕获指示; 发送单元,用于在所述接收 单元接收到的所述被捕获分组的组标识与终端所在终端分组的组标识一致时,向所述 基站发送包含所述终端的签名序列的第二前导序列; 所述接收单元,还用于接收所述 基站在根据所述第二前导序列确定被捕获终端后发送的包含所述被捕获终端的签名 序列的第二捕获指示; 所述发送单元,还用于在所述接收单元接收到的所述被捕获终 端的签名序列与所述终端的签名序列一致时, 向所述基站发送数据。
[13] 结合第二方面, 在第二方面第一种可能的实现方式中, 所述接收单元, 用于接 收基站发送的包含被捕获分组的组标识的第一捕获指示, 包括: 所述接收单元, 用于 通过捕获指示符信道 AICH接收所述第一捕获指示。
[14] 结合第二方面, 在第二方面第二种可能的实现方式中, 所述装置还包括: 生成 单元, 用于生成包含所述终端分组的组标识的所述第一前导序列; 所述发送单元, 还 用于通过物理随机接入信道 PRACH发送所述第一前导序列; 所述接收单元, 用于接 收基站发送的包含被捕获分组的组标识的第一捕获指示, 包括: 所述接收单元, 用于 通过 AICH接收所述第一捕获指示,所述第一捕获指示由基站根据第一前导序列确定 被捕获分组后发送。
[15] 结合第二方面第二种可能的实现方式, 在第二方面第三种可能的实现方式中, 所述生成单元包括: 确定子单元,用于确定所述终端分组的组标识及所述终端的签名 序列, 所述终端分组的组标识为预定长度的哈德码序列; 生成子单元, 用于生成由所 述终端分组的组标识与所述终端的签名序列构成的所述第一前导序列。
[16] 结合第二方面第二种可能的实现方式或第二方面第三种可能的实现方式, 在第 二方面第四种可能的实现方式中,所述发送单元,还用于在所述被捕获终端的签名序 列与所述终端的签名序列不一致时, 向所述基站重发所述第一前导序列。
[17] 第三方面, 本发明还提供了一种接入控制方式, 所述方法包括: 接收终端分组 内的组长终端发送的第一前导序列; 根据所述第一前导序列确定被捕获终端分组; 向 所述被捕获终端分组内的终端发送第一捕获指示;接收所述终端分组内的终端在接收 到所述第一捕获指示后发送的第二前导序列; 根据所述第二前导序列确定被捕获终 端; 向所述被捕获终端发送第二捕获指示,所述第二捕获指示用于指示所述被捕获终 端接入。
[18] 结合第三方面, 在第三方面第一种可能的实现方式中, 所述接收终端分组内的 组长终端发送的第一前导序列包括: 接收所述组长终端通过物理随机接入信道 PRACH发送且包含所述终端分组的组标识的第一前导序列。
[19] 结合第三方面第一种可能的实现方式, 在第三方面第二种可能的实现方式中, 所述向被捕获终端分组内终端发送第一捕获指示包括:通过捕获指示符信道 AICH发 送包含所述被捕获分组的组标识的所述第一捕获指示。
[20] 结合第三方面第一种可能的实现方式或第三方面第二种可能的实现方式, 在第 三方面第三种可能的实现方式中,所述接收所述被捕获终端分组内终端在接收到第一 捕获指示后发送的第二前导序列包括:接收所述被捕获分组内的所述终端在接收到第 一捕获指示后, 通过 PRACH发送的包含所述终端的签名序列的第二前导序列。
[21] 结合第三方面第一种可能的实现方式、 第三方面第二种可能的实现方式或第三 方面第三种可能的实现方式,在第三方面第四种可能的实现方式中,所述向被捕获终 端发送第二捕获指示包括:通过 AICH发送包含所述被捕获终端的签名序列的所述第 二捕获指示。 [22] 第四方面, 本发明还提供了一种接入方法, 所述方法包括: 接收基站发送的包 含被捕获分组的组标识的第一捕获指示;如果所述被捕获分组的组标识与终端所在终 端分组的组标识一致, 向所述基站发送包含所述终端的签名序列的第二前导序列; 接 收所述基站在根据所述第二前导序列确定被捕获终端后发送的包含所述被捕获终端 的签名序列的第二捕获指示;如果所述被捕获终端的签名序列与所述终端的签名序列 一致, 向所述基站发送数据。
[23] 结合第四方面, 在第四方面第一种可能的实现方式中, 所述接收基站发送的包 含所述被捕获分组的组标识第一捕获指示包括:通过捕获指示符信道 AICH接收所述 第一捕获指示,所述第一捕获指示由所述基站根据第一前导序列确定被捕获分组后发 送, 所述第一前导序列由所述终端分组中的组长终端通过物理随机接入信道 PRACH 发送。 [24] 结合第四方面, 在第四方面第二种可能的实现方式中, 在所述接收基站发送的 包含被捕获分组的组标识的第一捕获指示之前还包括:生成包含所述终端分组的组标 识的所述第一前导序列; 通过 PRACH发送所述第一前导序列; 所述接收基站发送的 包含所述被捕获分组的组标识第一捕获指示包括: 通过 AICH接收所述第一捕获指 示, 所述第一捕获指示由基站根据所述第一前导序列确定被捕获分组后发送。
[25] 结合第四方面第二种可能的实现方式, 在第四方面第三种可能的实现方式中, 所述生成包含终端分组的组标识的第一前导序列包括:确定所述终端分组的组标识及 所述终端的签名序列,所述终端分组的组标识为预定长度的哈德码序列; 生成由所述 终端分组的组标识与所述终端的签名序列构成的所述第一前导序列。 [26] 结合第四方面第二种可能的实现方式或第四方面第三种可能的实现方式, 在第 四方面第四种可能的实现方式中,所述方法还包括: 如果所述被捕获终端的签名序列 与所述终端的签名序列不一致, 向所述基站重发所述第一前导序列。
[27] 采用本发明实施例, 接收单元, 用于接收终端分组内的组长终端发送的第一前 导序列; 确定单元,用于根据所述接收单元接收到的所述第一前导序列确定被捕获终 端分组; 发送单元,用于向所述确定单元确定的所述被捕获终端分组内的终端发送第 一捕获指示; 所述接收单元,还用于接收所述被捕获终端分组内的终端在接收到所述 发送单元发送的所述第一捕获指示后发送的第二前导序列; 所述确定单元,还用于根 据所述接收单元接收到的所述第二前导序列确定被捕获终端; 所述发送单元,还用于 向所述确定单元确定的所述被捕获终端发送第二捕获指示,所述第二捕获指示用于指 示所述被捕获终端接入。终端竞争接入资源的过程,从一阶段竞争转变为两阶段竞争, 基站每次只接收各个组长发送的第一前导序列或者被捕获分组内终端发送的第二前 导序列, 可以大大减少基站每次所接收到的前导序列数量, 而有效降低基站的负载。 附图说明
[28] 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,对于本领域普通技术 人员而言, 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。
[29] 图 1为本发明接入控制装置一个实施例的流程图;
[30] 图 2A为本发明接入装置另一个实施例的流程图;
[31] 图 2B为本发明接入装置另一个实施例的流程图; [32] 图 3为本发明接入控制方法一个实施例的流程图; [33] 图 4为本发明接入方法一个实施例的示意图; [34] 图 5为本发明接入方法另一个实施例的示意图; [35] 图 6为本发明接入方法另一个实施例的示意图; [36] 图 7为本发明接入控制装置另一个实施例的示意图; [37] 图 8为本发明接入装置另一个实施例的示意图。 具体实施方式
[38] 为了使本领域技术人员更好地理解本发明方案, 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, 所述描述的实施 例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做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。
[39] 采用本发明实施例所述的方法, 可以根据预设的分组规则将所有需要接入目标 基站的终端分为若干个终端分组。可选的, 预设的分组规则可以为: 将传输同一类型 数据的终端作为一个终端分组, 或者位于同一地理区域内的终端作为一个终端分组, 或者在网规的时候就设定好终端分组。按照预设选取规则从每一个终端分组中选择一 个终端作为该终端分组的组长终端。可选的, 预设的规则可以为: 选择其中任意一个 终端作为该终端分组的组长终端, 或者根据终端的信道环境选择组长终端, 或者在网 规的时候就设定好组长终端。 根据分组方式的不同, 终端分组可以只包括组长终端, 也可以在组长终端之外还包括一个以上的组员终端。其中, 每一个终端分组都有一个 唯一对应的组标识, 每一个终端也都有对应的签名序列。
[40] 下面首先对本发明接入控制装置进行说明。 可选的, 所述接入控制装置可以设 置在基站中。
[41] 图 1为本发明接入控制装置一个实施例的示意图。 [42] 如图 1所示, 所述接入控制装置包括: 接收单元 101, 确定单元 102, 发送单元 103。
[43] 所述接收单元 101, 用于接收终端分组内的组长终端发送的第一前导序列。 [44] 一种可选的方式, 终端分组中的终端在进行数据传输之前, 首先由终端所在终 端分组中的组长终端通过物理随机接入信道 (Physical Random Access Channel ,简称
PRACH)发送第一前导序列, 为终端分组内的终端竞争接入资源。接收单元 101, 接 收该第一前导序列。其中, 第一前导序列可以包含所述终端分组的组标识。一种可选 的方式, 第一前导序可以由所述组长终端的签名序列与所述终端分组的组标识构成。 所述组长终端的签名序列的长度可以为 16比特的预设序列。 所述终端分组的组标识 由可以长为 N 比特的哈德码 (Hadamard) 序列组成, 其中, N大于 0, N的长度由 终端分组的个数及终端分组内终端的个数决定。 由于现有技术中, 前导序列的长度通 常为 4096比特, 因此 N还需满足 4096能够被 16+N整除的要求。 将 16+N比特的序 列重复 M次, 可形成 4096 比特的第一前导序列, M是 4096被 (16+N) 整除的商。 例如, 可以将 16 比特的组长终端签名序列加上 16 比特的组标识重复 128次, 构成 4096 比特的第一前导序列。
[45] 所述确定单元 102,用于根据所述接收单元 101接收到的所述第一前导序列确定 被捕获终端分组。 [46] 所述接收单元 101在一定时间内可能接收到一个或多个第一前导序列。 当所述 接收单元 101只接收到一个第一前导序列,且该第一前导序列所对应的终端分组中的 终端能够接入时, 确定单元 102 可以将该第一前导序列对应的终端分组为被捕获分 组。 当基站接收到多个第一前导序列时, 可选的, 确定单元 102可以按照预定确定规 贝 U,例如按照第一前导序列的接收信噪比,选择其中一个第一前导序列对应终端分组 作为被捕获分组。
[47] 所述发送单元 103,用于向所述确定单元 102确定的所述被捕获终端分组内的终 端发送第一捕获指示。
[48] 在被捕获分组确定后, 所述发送单元 103从第一前导序列中获取被捕获分组的 组标识, 然后生成并发送包含该被捕获分组的组标识的第一捕获指示。其中, 所述发 送单元 103可以将第一捕获指示通过 AICH发送至各个终端。所述发送单元 103在通 过 AICH发送所述组标识时, 可以将所述组标识设置在 AICH预留的 1024码片上发 送。 一种可选的方式, 可以将长度为 N 比特的被捕获分组的组标识每比特重复, 形 成长为 2N比特的序列, 然后采用与现有 AICH相同的扩频因子和调制方式对被捕获 分组的组标识进行发送。 [49] 所述接收单元 101, 还用于接收所述终端分组内的终端在接收到所述发送单元 103发送的所述第一捕获指示后发送的第二前导序列。
[50] 由于被捕获分组内可能有多个终端需要进行接入, 因此被捕获分组内终端也需 要竞争接入资源。 被捕获分组内终端可以采用发送第二前导序列的方式竞争接入资 源,其中第二前导序列包含终端的签名序列。所述接收单元 101接收各个终端发送的 第二前导序列。
[51] 所述确定单元 102,还用于根据所述接收单元 101接收到的所述第二前导序列确 定被捕获终端。
[52] 所述确定单元 102根据第二前导序列确定被捕获终端的过程, 与现有技术中根 据前导序列确定可接入终端的方法相类似, 在此就不再赘述。
[53] 所述发送单元 103,还用于向所述确定单元 102确定的被捕获终端发送第二捕获 指示, 所述第二捕获指示用于指示所述被捕获终端接入。
[54] 一种可选的方式, 在被捕获终端确定之后, 所述发送单元 103通过 AICH发送 包含所述被捕获终端的签名序列第二捕获指示。第二捕获指示与现有技术中捕获指示 的发送方法相类似,在此就不再赘述。当被捕获终端接收到第二捕获指示并间隔预定 时间后, 通过 PRACH发送其需要发送的数据。 基站接收被捕获终端通过 PRACH发 送的数据。 具体过程与现有技术中终端接入的方法相类似, 在此就不再赘述。
[55] 从上述实施例可以看出, 所述接入控制装置可以接收终端分组内的组长终端发 送的第一前导序列; 根据所述第一前导序列确定被捕获终端分组; 向所述被捕获终端 分组内的终端发送第一捕获指示;接收所述终端分组内的终端在接收到所述第一捕获 指示后发送的第二前导序列; 根据所述第二前导序列确定被捕获终端; 向所述被捕获 终端发送第二捕获指示,所述第二捕获指示用于指示所述被捕获终端接入。采用本实 施例, 终端竞争接入资源的过程, 从一次竞争转变为两次竞争, 不但可以减少基站接 收到的前导序列的总数量, 而且可以降低基站可能同时接收到的前导序列的最大数 量, 从而可以有效降低基站的负载。 相应的, 对于每一个组员终端来说, 前导序列发 送次数的减少, 也可以减少数据传输过程所消耗的能量。
[56] 下面对与接入控制装置相对应的接入装置进行说明。 可选的, 所述接入装置可 以设置在终端中。
[57] 2A为发明接入装置一个实施例的示意图。
[58] 如图 2所示, 如果所述接入装置用于组员终端的接入, 所述接入装置包括: 接 收单元 201与发送单元 202。
[59] 所述接收单元 201, 用于接收基站发送的包含被捕获分组的组标识 的第一捕获 指示。
[60] 一种可选的方式, 所述接收单元 201可以直接通过 AICH接收包含所述第一捕 获指示,其中,所述第一捕获指示由基站根据该终端所在终端分组的组长终端发送的 第一前导序列确定被捕获分组后生成并发送。
[61] 所述发送单元 202,用于在所述接收单元 201接收到的所述被捕获分组的组标识 与终端所在终端分组的组标识一致时,向所述基站发送包含所述终端签名序列的第二 前导序列。
[62] 如果所述被捕获分组的组标识与所述终端分组的组标识一致, 说明在本次数据 传输时隙, 终端分组内的终端可以进行数据传输。但是由于终端无法确定所在终端分 组内是否还有其它终端需要进行数据传输, 为防止冲突, 终端需要与所在终端分组内 的其他组员终端竞争接入资源,因此所述发送单元 202需要发送第二前导序列竞争接 入资源。 [63] 如果所述被捕获分组的组标识与所述终端分组的组标识不一致, 说明在次数据 传输时隙, 所述终端分组内的终端都不能进行数据传输。 此时, 所述接收单元 201 需要等待再次接收第一捕获指示。
[64] 所述接收单元 201,还用于接收所述基站在根据所述发送单元 202发送的所述第 二前导序列确定被捕获终端后发送的包含所述被捕获终端的签名序列的第二捕获指 示。
[65] 一种可选的方式, 基站通过 AICH发送被第二捕获指示, 所述接收单元 201接 收该第二捕获指示。第二捕获指示的具体发送过程前述实施例中已经进行描述,在此 就不再说明。
[66] 所述发送单元 202,还用于在所述接收单元接收到的所述被捕获终端的签名序列 与所述终端的签名序列一致时, 向所述基站发送数据。
[67] 如果所述被捕获终端的签名序列与所述终端的签名序列一致, 则说明终端竞争 接入资源成功, 可以进行数据传输, 在经过协议规定的预定时长后所述发送单元 202 可以通过 PRACH发送数据。
[68] 如图 2B所述, 为本发明接入装置另一个实施例的示意图。 [69] 如图 2B所示, 如果所述接入装置用于实现终端分组内组长终端接入, 除所述接 收单元 201与发送单元 202外, 所述接入装置还包括: 生成单元 203。
[70] 所述生成单元 203, 用于生成包含所述终端分组的组标识的所述第一前导序列。
[71] 在进行终端进行接入时, 首先由生成单元 203 生成第一前导序列, 其中, 第一 前导序列可以包含终端分组的组标识。一种可选的方式,第一前导序可以由组长终端 签名序列与终端分组的组标识构成。第一前导序列的结构和生成方式在前述实施例中 已经进行了说明, 在此就不再赘述。
[72] 所述发送单元 202, 还用于通过 PRACH发送所述第一前导序列。
[73] 在第一前导序列生成后, 所述发送单元 202通过 PRACH将第一前导序列发送 至基站, 为终端分组内所有的终端竞争接入资源。
[74] 所述接收单元 201, 还用于通过 AICH接收所述第一捕获指示, 同样的, 所述第 一捕获指示由基站根据第一前导序列确定被捕获分组后通过 AICH发送。
[75] 如果所述被捕获分组的组标识与所述终端分组的组标识不一致, 说明在本次数 据传输时隙, 所述终端分组内的终端不能进行数据传输。 此时, 需要所述发送单元 202再次发送第一前导序列, 为本终端分组内的终端竞争接入资源。 在此需要说明的 是, 所述发送单元 202两次发送第一前导序列的发送时间间隔 必须大于或者等 于现有 PRACH过程中协议规定的前导序列和前导序列之间的发送时间间隔 ^— '^。 即: t > t 。
[76] 为提高接入资源竞争的成功率, 组长终端在再次发送第一前导序列时, 可以对 第一前导序列的发送功率进行抬升。组长终端可以不断抬升发送功率重复发送所述第 一前导序列,直到被捕获分组的组标识与所述终端分组的组标识一致或达到最大允许 发射次数。
[77] 采用本实施例, 终端竞争接入资源的过程, 从一次竞争转变为两次竞争, 不但 可以减少基站接收到的前导序列的总数量,而且可以降低基站可能同时接收到的前导 序列的最大数量,从而可以有效降低基站的负载。相应的,对于每一个组员终端来说, 前导序列发送次数的减少, 也可以减少数据传输过程所消耗的能量。
[78] 下面对本发明接入控制方法进行以下说明。 可选的, 可以由 UTMS系统中的基 站执行本发明的接入控制方法。
[79] 参见图 3, 为本发明接入控制方法一个实施例的流程图。 [80] 步骤 301, 接收终端分组内的组长终端发送的第一前导序列。
[81] 终端在进行数据传输之前,首先由终端所在终端分组中的组长终端通过 PRACH 发送第一前导序列, 为终端竞争接入资源。其中, 第一前导序列可以包含终端分组的 组标识。在实际使用中,第一前导序可以由组长终端签名序列与终端分组的组标识构 成。第一前导序列的结构和生成方式在前述实施例中已经进行了描述,在此就不再赘 述。
[82] 步骤 302, 根据所述第一前导序列确定被捕获分组。
[83] 基站在一定时间内可能接收到一个或多个第一前导序列, 当基站只接收到一个 第一前导序列, 且该终端分组中的终端能够接入时,可以将该第一前导序列对应的终 端分组为被捕获分组。 当基站接收到多个第一前导序列时, 可以按照预定确定规则, 例如按照第一前导序列的接收信噪比,选择其中一个第一前导序列对应终端分组作为 被捕获分组。
[84] 步骤 303, 向所述被捕获终端分组内的终端发送第一捕获指示。
[85] 在被捕获分组确定后, 基站可以首先从被捕获分组的组长终端所发送的第一前 导序列中获取被捕获分组的组标识,然后生成包含该被捕获分组的组标识的第一捕获 指示并对该第一捕获指示进行发送。其中, 基站可以将第一捕获指示通过 AICH发送 至各个终端。基站在通过 AICH发送第一捕获指示时, 可以将所述第一捕获指示放在 AICH预留的 1024码片上发送。 具体来说, 可以将长度为 N 比特的第一捕获指示每 比特重复, 形成长为 2N 比特的序列, 然后采用与现有 AICH 相同的扩频因子为 1024 / N 的 OVSF码进行扩频发送。
[86] 其中第一捕获指示的发送时间与第一前导序列的发送时间之间的间隔 ^ 要满 足预设的时间间隔。例如,当网络参数 AICH_Transmission_Timing设置为 0时, tpp min =
15360 chips, tppap = 7680 chips; 当网络参数 AICH_Transmission_Timing设置为 1 时, tp— = 20480 chips, ^ = 12800 chips, 其中, t„m.„为现有 PRACH过程 中协议规定的前导序列和前导序列之间的发送时间间隔, chips 为每一个码片的传输 时间, 表示一个传输一个码片 (chip ) 需要的时间。
[87] 步骤 304,接收所述终端分组内的终端在接收到所述第一捕获指示后发送的第二 前导序列。
[88] 由于被捕获分组内可能有多个终端需要进行接入, 因此被捕获分组内终端也需 要竞争接入资源。 被捕获分组内终端可以采用发送第二前导序列的方式竞争接入资 源,其中第二前导序列包含终端的签名序列。基站接收各个终端发送的第二前导序列。
[89] 步骤 305, 根据所述第二前导序列确定被捕获终端。
[90] 基站根据第二前导序列确定被捕获终端的过程, 与现有技术中基站根据前导序 列确定可接入终端的方法相类似, 在此就不再赘述。 [91] 步骤 306, 向所述被捕获终端发送第二捕获指示,所述第二捕获指示用于指示所 述被捕获终端接入。
[92] 在被捕获终端确定之后, 基站通过 AICH发送包含所述被捕获终端的签名序列 第二捕获指示。 第二捕获指示与第一捕获指示的发送方法想类似, 在此就不再赘述。 当被捕获终端接收到第二捕获指示并间隔协议规定的预定时间后,通过 PRACH发送 其需要发送的数据。基站接收被捕获终端通过 PRACH发送的数据。 具体过程与现有 技术中数据接收的方法相类似, 在此就不再赘述。 在此需要说明的是, 前述步骤 104 至步骤 106与现有技术中终端随机接入过程像类似,具体可以参见现有技术中终端随 机接入过程。
[93] 从上述实施例可以看出, 所述接入控制装置可以接收终端分组内的组长终端发 送的第一前导序列; 根据所述第一前导序列确定被捕获终端分组; 向所述被捕获终端 分组内的终端发送第一捕获指示;接收所述终端分组内的终端在接收到所述第一捕获 指示后发送的第二前导序列; 根据所述第二前导序列确定被捕获终端; 向所述被捕获 终端发送第二捕获指示,所述第二捕获指示用于指示所述被捕获终端接入。采用本实 施例, 终端竞争接入资源的过程, 从一次竞争转变为两次竞争, 不但可以减少基站接 收到的前导序列的总数量, 而且可以降低基站可能同时接收到的前导序列的最大数 量, 从而可以有效降低基站的负载。 相应的, 对于每一个组员终端来说, 前导序列发 送次数的减少, 也可以减少数据传输过程所消耗的能量。
[94] 下面对本发明接入方法进行进一步说明。 该实施例可以由终端分组中的终端执 行。
[95] 参见图 4,为本发明终端分组内终端接入方法另一个实施例的流程图,所述方法 包括如下步骤:
[96] 步骤 401, 接收基站发送的包含被捕获分组的组标识的第一捕获指示。
[97] 如果所述终端为终端分组内的组长终端, 那么在接收第一捕获指示之前, 还包 括为终端分组中的终端竞争接入资源的步骤:生成包含所述终端分组的组标识的所述 第一前导序列; 通过 PRACH发送所述第一前导序列。 该第一捕获指示由基站根据终 端发送的第一前导序列确定被捕获分组后生成并发送。具体过程在前述实施例中已经 进行了说明, 在此就不再赘述。
[98] 如果所述终端为终端分组内的组员终端, 则可以直接通过 AICH接收所述第一 捕获指示,其中,所述第一捕获指示由所述基站根据第一前导序列确定被捕获分组后 发送, 所述第一前导序列由所述终端分组中的组长终端通过 PRACH发送。
[99] 步骤 402,如果所述被捕获分组的组标识与终端所在终端分组的组标识一致, 向 所述基站发送包含所述终端的签名序列的第二前导序列。
[100]如果所述被捕获分组的组标识与所述终端分组的组标识一致, 说明在本次数据 传输时隙, 终端分组内的终端可以进行数据传输。但是由于终端无法确定所在终端分 组内是否还有其它终端需要进行数据传输, 为防止冲突, 终端需要与终端分组内的其 他组员终端竞争接入资源。 其中, 竞争接入资源的方式为发送第二前导序列。
[101]在终端发送第二前导序列时, 可以在使开始接收所述第一捕获指示与发送所述 第二前导序列的时间间隔 tfl ^满足: t。^ = 7680+i*5120 chips, 其中, i取值为 0, 1, 2 , …。
[102]如果所述被捕获分组的组标识与所述终端分组的组标识不一致, 说明在本次数 据传输时隙, 所述终端分组内的终端不能进行数据传输。此时, 需要组长终端再次发 送第一前导序列, 为终端分组内的终端竞争接入资源。
[103]步骤 403,接收基站在根据所述第二前导序列确定被捕获终端后发送的包含被捕 获终端的签名序列第二捕获指示。
[104]基站在确定被捕获终端后, 可以通过 AICH发送被第二捕获指示, 终端接收该 第二捕获指示。第二捕获指示的具体形式和发送方式前述实施例中已经进行描述,在 此就不再说明。
[105]步骤 404,如果所述被捕获终端的签名序列与所述终端的签名序列一致, 向所述 基站发送数据。
[106]如果所述被捕获终端的签名序列与所述组员终端的签名序列一致, 则说明终端 竞争接入资源成功, 可以进行数据传输, 在经过预定时长后通过 PRACH发送数据。
[107]如果所述被捕获终端的签名序列与所述组员终端的签名序列不一致, 则说明终 端竞争接入资源失败, 需要组长终端再次为本终端分组内的终端竞争接入资源。 [108]从上述实施例可以看出, 采用本实施例将终端竞争接入资源的过程, 从一次竞 争转变为两次竞争, 从而可以大大减少基站接收到的前导序列的数量, 从而有效降低 基站的负载。
[109]下面从终端分组中组员终端的角度对本发明接入方法进行进一步说明。 [110]参见图 5, 为本发明接入方法另一个实施例的流程图, 所述方法包括如下步骤:
[111]步骤 501,通过 AICH接收所述第一捕获指示, 所述第一捕获指示由所述基站根 据第一前导序列确定被捕获分组后发送,所述第一前导序列由所述终端分组中的组长 终端通过 PRACH发送。
[112]步骤 502, 如果所述被捕获分组的组标识与所述终端分组的组标识一致, 通过 PRACH向所述基站发送第二前导序列, 所述第二前导序列包括所述组员终端的签名 序列。
[113]步骤 503,通过 AICH接收第二捕获指示,所述捕获指示由基站在根据所述第二 前导序列确定被捕获终端后发送, 所述第二捕获指示包括被捕获终端的签名序列。
[114]步骤 504,如果所述被捕获终端的签名序列与所述组员终端的签名序列一致,通 过 PRACH发送数据。
[115]从上述实施例可以看出, 采用本实施例将终端竞争接入资源的过程, 从一次竞 争转变为两次竞争, 从而可以大大减少基站接收到的前导序列的数量, 从而有效降低 基站的负载。 同时, 对于每一个组员终端来说, 前导序列发送次数的减少, 也可以减 少数据传输过程所消耗的能量。
[116]下面从终端分组中组长终端的角度对本发明接入方法进行进一步说明。
[117]参见图 6, 为本发明接入方法另一个实施例的流程图, 所述方法包括如下步骤: [118] 601, 生成包含终端分组的组标识的第一前导序列。 [119] 602, 通过 PRACH发送第一前导序列。
[120] 603 , 通过 AICH接收包含所述被捕获分组的组标识第一捕获指示, 所述第一捕 获指示由基站根据第一前导序列确定被捕获分组后通过 AICH发送。
[121] 604,如果所述被捕获分组的组标识与所述终端分组的组标识一致,通过 PRACH 向所述基站发送第二前导序列, 所述第二前导序列包括所述组长终端的签名序列。 [122]如果所述被捕获分组的组标识与所述终端分组的组标识不一致, 说明在本次数 据传输时隙, 所述终端分组内的终端不能进行数据传输。此时, 需要组长终端再次发 送第一前导序列, 为终端分组内的终端竞争接入资源。
[123]为提高接入资源竞争的成功率, 组长终端在再次发送第一前导序列时, 可以对 第一前导序列的发送功率进行抬升。组长终端可以不断抬升发送功率重复发送所述第 一前导序列,直到被捕获分组的组标识与所述终端分组的组标识一致或达到最大允许 发射次数。
[124]在此需要说明的是, 组长终端两次发送第一前导序列的发送时间间隔 必须 大于或者等于现有 PRACH过程中协议规定的前导序列和前导序列之间的发送时间间 隔 即: tPpPp ≥ tpp,mi
[125] 605, 通过 AICH接收第二捕获指示, 所述捕获指示由基站在根据所述第二前导 序列确定被捕获终端后发送, 所述第二捕获指示包括被捕获终端的签名序列。
[126] 606, 如果所述被捕获终端的签名序列与所述组长终端的签名序列一致, 通过 PRACH发送数据。 [127]采用本实施例将终端竞争接入资源的过程, 从一次竞争转变为两次竞争, 从而 可以大大减少基站接收到的前导序列的数量, 从而有效降低基站的负载。 同时, 对于 每一个组员终端来说, 前导序列发送次数的减少, 也可以减少数据传输过程所消耗的 能量。
[128]参见图 7, 为本发明接入控制装置另一个实施例的示意图。 [129]如图 7所示, 所述装置包括: 处理器 701, 存储器 702, 通信接口 703, 所述处 理器 701、 所述存储器 702与所述通信接口 703之间通过总线 704连接。
[130]其中, 所述总线 704 可以是外设部件互连标准 (Peripheral Component Interconnect , 简称 PCI ) 总线或扩展工业标准结构 (Extended Industry Standard Architecture, 简称 EISA) 总线等。 所述总线可以分为地址总线、 数据总线、 控制总 线等。 为便于表示, 图 7中仅用一条粗线表示, 但并不表示仅有一根总线或一种类型 的总线。
[131]所述存储器 702用于存放程序。 具体地, 程序可以包括程序代码, 所述程序代 码包括计算机操作指令。 存储器 702 可能包含随机存取存储器 (Random Access Memory,简称 RAM)存储器,也可能还包括非易失性存储器(Non- Volatile Memory), 例如至少一个磁盘存储器。
[132]所述处理器 701执行所述存储器 702存放的程序, 用于: 通过通信接口 703接 收终端分组内的组长终端发送的第一前导序列;根据所述第一前导序列确定被捕获终 端分组; 通过通信接口 703向所述被捕获终端分组内的终端发送第一捕获指示; 通过 通信接口 703 接收所述终端分组内的终端在接收到所述第一捕获指示后发送的第二 前导序列; 根据所述第二前导序列确定被捕获终端; 通过通信接口 703向所述被捕获 终端发送第二捕获指示, 所述第二捕获指示用于指示所述被捕获终端接入。
[133]在另一种可选的实施方式中, 所述通过通信接口 703接收终端分组内的组长终 端发送的第一前导序列包括:通过通信接口 703接收所述组长终端通过物理随机接入 信道 PRACH发送且包含所述终端分组的组标识的第一前导序列。
[134]在另一种可选的实施方式中, 所述通过通信接口 703 向被捕获终端分组内终端 发送第一捕获指示包括:通过通信接口 703利用捕获指示符信道 AICH发送包含所述 被捕获分组的组标识的所述第一捕获指示。
[135]在另一种可选的实施方式中, 所述通过通信接口 703接收所述被捕获终端分组 内终端在接收到第一捕获指示后发送的第二前导序列包括:通过通信接口 703接收所 述被捕获分组内的所述终端在接收到第一捕获指示后,通过 PRACH发送的包含所述 终端的签名序列的第二前导序列。
[136]在另一种可选的实施方式中, 所述通过通信接口 703 向被捕获终端发送第二捕 获指示包括:通过通信接口 703利用 AICH发送包含所述被捕获终端的签名序列的所 述第二捕获指示。
[137]参见图 8, 为本发明接入装置的另一个实施例的示意图。
[138]如图 8所示, 所述在装置包括: 处理器 801, 存储器 802, 通信接口 803, 所述 处理器 801、 所述存储器 802与所述通信接口 803之间通过总线 804连接。
[139]其中, 所述总线 804 可以是外设部件互连标准 (Peripheral Component Interconnect , 简称 PCI ) 总线或扩展工业标准结构 (Extended Industry Standard Architecture, 简称 EISA) 总线等。 所述总线可以分为地址总线、 数据总线、 控制总 线等。 为便于表示, 图 6中仅用一条粗线表示, 但并不表示仅有一根总线或一种类型 的总线。
[140]所述存储器 802用于存放程序。 具体地, 程序可以包括程序代码, 所述程序代 码包括计算机操作指令。 存储器 802 可能包含随机存取存储器 (Random Access Memory,简称 RAM)存储器,也可能还包括非易失性存储器(Non- Volatile Memory), 例如至少一个磁盘存储器。
[141]所述处理器 801执行所述存储器 802存放的程序, 用于: 利用通信接口 803接 收基站发送的包含被捕获分组的组标识的第一捕获指示;如果所述被捕获分组的组标 识与终端所在终端分组的组标识一致,利用通信接口 803向所述基站发送包含所述终 端的签名序列的第二前导序列;利用通信接口 803接收所述基站在根据所述第二前导 序列确定被捕获终端后发送的包含所述被捕获终端的签名序列的第二捕获指示;如果 所述被捕获终端的签名序列与所述终端的签名序列一致,利用通信接口 803向所述基 站发送数据。
[142]在另一种可选的实施方式中, 所述利用通信接口 803接收基站发送的包含所述 被捕获分组的组标识第一捕获指示包括: 利用通信接口 803 通过捕获指示符信道 AICH接收所述第一捕获指示, 所述第一捕获指示由所述基站根据第一前导序列确定 被捕获分组后发送,所述第一前导序列由所述终端分组中的组长终端通过物理随机接 入信道 PRACH发送。
[143]在另一种可选的实施方式中, 在利用通信接口 803所述接收基站发送的包含被 捕获分组的组标识的第一捕获指示之前还包括:生成包含所述终端分组的组标识的所 述第一前导序列; 利用通信接口 803通过 PRACH发送所述第一前导序列; 所述利用 通信接口 803接收基站发送的包含所述被捕获分组的组标识第一捕获指示包括:利用 通信接口 803通过 AICH接收所述第一捕获指示,所述第一捕获指示由基站根据所述 第一前导序列确定被捕获分组后发送。
[144]在另一种可选的实施方式中, 所述利用通信接口 803接收所述被捕获终端分组 内终端在接收到第一捕获指示后发送的第二前导序列包括:利用通信接口 803接收所 述被捕获分组内的所述终端在接收到第一捕获指示后, 利用通信接口 803 通过 PRACH发送的包含所述终端的签名序列的第二前导序列。
[145]在另一种可选的实施方式中, 利用通信接口 803所述向被捕获终端发送第二捕 获指示包括:利用通信接口 803通过 AICH发送包含所述被捕获终端的签名序列的所 述第二捕获指示。
[146]领域的技术人员可以清楚地了解到发明实施例中的技术可借助软件加必需的通 用硬件平台的方式来实现。基于这样的理解, 发明实施例中的技术方案质上或者说对 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)执行发明各个实施例或者实施 例的某些部分所述的方法。
[147]说明书中的各个实施例均采用递进的方式描述, 各个实施例之间相同相似的部 分互相参见即可, 每个实施例重点说明的都是与其他实施例的不同之处。尤其, 对于 装置、服务器、系统实施例而言, 由于其基相似于方法实施例,所以描述的比较简单, 相关之处参见方法实施例的部分说明即可。
[148]以上所述的发明实施方式, 并不构成对发明保护范围的限定。 任何在发明的精 神和原则之内所作的修改、 等同替换和改进等, 均应包含在发明的保护范围之内。

Claims

权 利 要 求
1.一种接入控制装置, 特征在于, 所述装置包括:
接收单元, 用于接收终端分组内的组长终端发送的第一前导序列; 确定单元,用于根据所述接收单元接收到的所述第一前导序列确定被捕获终 端分组;
发送单元,用于向所述确定单元确定的所述被捕获终端分组内的终端发送第 一捕获指示;
所述接收单元,还用于接收所述被捕获终端分组内的终端在接收到所述发送 单元发送的所述第一捕获指示后发送的第二前导序列;
所述确定单元,还用于根据所述接收单元接收到的所述第二前导序列确定被 捕获终端;
所述发送单元,还用于向所述确定单元确定的所述被捕获终端发送第二捕获 指示, 所述第二捕获指示用于指示所述被捕获终端接入。 2.如权利要求 1所述的装置, 其特征在于, 所述接收单元, 用于接收终端分 组内的组长终端发送的第一前导序列, 包括:
所述接收单元, 用于接收由所述组长终端通过物理随机接入信道 PRACH发 送且包含所述终端分组的组标识的第一前导序列。 3.如权利要求 2所述的装置, 其特征在于, 所述发送单元, 用于向所述确定 单元确定的所述被捕获终端分组内的终端发送第一捕获指示, 包括:
所述发送单元,用于通过捕获指示符信道 AICH发送包含所述被捕获分组的 组标识的所述第一捕获指示。 4.如权利要求 2或 3所述的装置, 其特征在于, 所述接收单元, 还用于接收 所述被捕获终端分组内的终端在接收到所述发送单元发送的所述第一捕获指示 后发送的第二前导序列, 包括:
所述接收单元,还用于接收所述被捕获分组内的所述终端在接收到所述第一 捕获指示后通过 PRACH发送的包含所述终端的签名序列的第二前导序列。
5如权利要求 2至 4任一权利要求所述的装置,其特征在于,所述发送单元, 还用于向所述确定单元确定的所述被捕获终端发送第二捕获指示, 包括: 所述发送单元,还用于通过 AICH发送包含所述被捕获终端的签名序列的所 述第二捕获指示。 6.—种接入装置, 其特征在于, 所述装置包括:
接收单元, 用于接收基站发送的包含被捕获分组的组标识的第一捕获指示; 发送单元,用于在所述接收单元接收到的所述被捕获分组的组标识与终端所 在终端分组的组标识一致时,向所述基站发送包含所述终端的签名序列的第二前 导序列;
所述接收单元,还用于接收所述基站在根据所述第二前导序列确定被捕获终 端后发送的包含所述被捕获终端的签名序列的第二捕获指示;
所述发送单元,还用于在所述接收单元接收到的所述被捕获终端的签名序列 与所述终端的签名序列一致时, 向所述基站发送数据。 7.如权利要求 6所述的装置, 其特征在于, 所述接收单元, 用于接收基站发 送的包含被捕获分组的组标识的第一捕获指示, 包括:
所述接收单元, 用于通过捕获指示符信道 AICH接收所述第一捕获指示。
8. 如权利要求 6所述的装置, 其特征在于, 所述装置还包括:
生成单元, 用于生成包含所述终端分组的组标识的所述第一前导序列; 所述发送单元, 还用于通过物理随机接入信道 PRACH发送所述第一前导序 列;
所述接收单元,用于接收基站发送的包含被捕获分组的组标识的第一捕获指 示, 包括:
所述接收单元, 用于通过 AICH接收所述第一捕获指示, 所述第一捕获指示 由基站根据第一前导序列确定被捕获分组后发送。
9.如权利要求 8所述的装置, 其特征在于, 所述生成单元包括:
确定子单元, 用于确定所述终端分组的组标识及所述终端的签名序列, 所述 终端分组的组标识为预定长度的哈德码序列;
生成子单元,用于生成由所述终端分组的组标识与所述终端的签名序列构成 的所述第一前导序列。
10.如权利要求 8或 9所述的生成装置, 其特征在于,
所述发送单元,还用于在所述被捕获终端的签名序列与所述终端的签名序列 不一致时, 向所述基站重发所述第一前导序列。 11.一种接入控制方法, 其特征在于, 所述方法包括:
接收终端分组内的组长终端发送的第一前导序列;
根据所述第一前导序列确定被捕获终端分组;
向所述被捕获终端分组内的终端发送第一捕获指示;
接收所述终端分组内的终端在接收到所述第一捕获指示后发送的第二前导 序列;
根据所述第二前导序列确定被捕获终端;
向所述被捕获终端发送第二捕获指示,所述第二捕获指示用于指示所述被捕 获终端接入。 12.如权利要求 11所述的方法, 其特征在于, 所述接收终端分组内的组长终 端发送的第一前导序列包括:
接收所述组长终端通过物理随机接入信道 PRACH发送且包含所述终端分组 的组标识的第一前导序列。 13.如权利要求 12所述的方法, 其特征在于, 所述向被捕获终端分组内终端 发送第一捕获指示包括:
通过捕获指示符信道 AICH发送包含所述被捕获分组的组标识的所述第一 捕获指示。 14.如权利要求 12或 13所述的方法, 其特征在于, 所述接收所述被捕获终 端分组内终端在接收到第一捕获指示后发送的第二前导序列包括:
接收所述被捕获分组内的所述终端在接收到第一捕获指示后, 通过 PRACH 发送的包含所述终端的签名序列的第二前导序列。 15.如权利要求 12至 14任一权利要求所述的方法, 其特征在于, 所述向被 捕获终端发送第二捕获指示包括:
通过 AICH发送包含所述被捕获终端的签名序列的所述第二捕获指示。
16.—种接入方法, 其特征在于, 所述方法包括:
接收基站发送的包含被捕获分组的组标识的第一捕获指示;
如果所述被捕获分组的组标识与终端所在终端分组的组标识一致,向所述基 站发送包含所述终端的签名序列的第二前导序列;
接收所述基站在根据所述第二前导序列确定被捕获终端后发送的包含所述 被捕获终端的签名序列的第二捕获指示;
如果所述被捕获终端的签名序列与所述终端的签名序列一致,向所述基站发 送数据。
17.如权利要求 16所述的方法, 其特征在于, 所述接收基站发送的包含所述 被捕获分组的组标识第一捕获指示包括:
通过捕获指示符信道 AICH接收所述第一捕获指示,所述第一捕获指示由所 述基站根据第一前导序列确定被捕获分组后发送,所述第一前导序列由所述终端 分组中的组长终端通过物理随机接入信道 PRACH发送。
18.如权利要求 16所述的方法, 其特征在于,
在所述接收基站发送的包含被捕获分组的组标识的第一捕获指示之前还包 括:
生成包含所述终端分组的组标识的所述第一前导序列; 通过 PRACH发送所 述第一前导序列;
所述接收基站发送的包含所述被捕获分组的组标识第一捕获指示包括: 通过 AICH接收所述第一捕获指示,所述第一捕获指示由基站根据所述第一 前导序列确定被捕获分组后发送。
19.如权利要求 18所述的方法, 其特征在于, 所述生成包含终端分组的组标 识的第一前导序列包括:
确定所述终端分组的组标识及所述终端的签名序列,所述终端分组的组标识 为预定长度的哈德码序列;
生成由所述终端分组的组标识与所述终端的签名序列构成的所述第一前导 序列。
20.如权利要求 18或 19所述的方法, 其特征在于, 所述方法还包括: 如果所述被捕获终端的签名序列与所述终端的签名序列不一致,向所述基站 重发所述第一前导序列。
PCT/CN2014/081304 2014-06-30 2014-06-30 接入控制装置、接入装置及方法 WO2016000188A1 (zh)

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