CN101932106A - Random access method, user equipment, cell control equipment and system - Google Patents

Random access method, user equipment, cell control equipment and system Download PDF

Info

Publication number
CN101932106A
CN101932106A CN201010273394XA CN201010273394A CN101932106A CN 101932106 A CN101932106 A CN 101932106A CN 201010273394X A CN201010273394X A CN 201010273394XA CN 201010273394 A CN201010273394 A CN 201010273394A CN 101932106 A CN101932106 A CN 101932106A
Authority
CN
China
Prior art keywords
prach resource
resource distribution
cell
target cell
leader sequence
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201010273394XA
Other languages
Chinese (zh)
Inventor
涂靖
徐立
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201010273394XA priority Critical patent/CN101932106A/en
Publication of CN101932106A publication Critical patent/CN101932106A/en
Priority to PCT/CN2011/075344 priority patent/WO2011147363A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points

Landscapes

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

Abstract

The embodiment of the invention discloses a random access method for ensuring the success of a random access. The method comprises the following steps: receiving a switching request message sent by a source cell, wherein the switching request message carries information of UE to be switched; generating a physical random access channel (PRACH) resource allocation, wherein each frame of the PRACH resource allocation has at least one PRACH resource; and sending a switching request response message to the source cell, wherein the switching request response message includes the PRACH resource allocation, and the PRACH resource allocation is used for indicating the PRACH resource by which the UE sends a special leader sequence. The embodiment of the invention also discloses user equipment, cell control equipment and a system. The embodiment of the invention can ensure the success of a random access.

Description

Accidental access method, subscriber equipment, cell control equipment and system
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of accidental access method, subscriber equipment, cell control equipment and system.
Background technology
At Long Term Evolution (LTE, Long Term Evolution) in the system, because subscriber equipment (UE, User Equipment) has mobility, makes the sub-district be switching to the requisite process of system, when carrying out the sub-district switching, UE need obtain synchronously with Target cell, and realizes that by random access procedure random access procedure is as important in a switching flow step synchronously, directly determining performance of handoffs (handover success rate, switching controls face, user's face interrupt time delay).
Before UE inserts at random, need at first obtain the Physical Random Access Channel (PRACH of Target cell, Physical Random Access Channel) resource distribution, in general this PRACH resource has 64 configuration indexs, each configuration index comprises leading format parameter respectively, System Frame Number (SFN, System Frame Number) and subframe numbers.
In existing handoff procedure, the PRACH resource distribution that Target cell indication switching UE transmission special leader sequence uses is the acquiescence PRACH configuration of Target cell, comprise Target cell SFN in this configuration, but UE and do not know the SFN of Target cell when switching, the SFN of cell-of-origin may be applied to Target cell, cause Target cell can't receive special leader sequence, thereby cause access failure at random.
Summary of the invention
The embodiment of the invention provides a kind of accidental access method, subscriber equipment, cell control equipment and system, is used to guarantee insert at random success.
The accidental access method that the embodiment of the invention provides comprises: the handoff request message that the reception sources sub-district sends, and described handoff request message is carried the information of the user equipment (UE) that need switch; Generate Physical Random Access Channel PRACH resource distribution, have a PRACH resource on each frame of described PRACH resource distribution at least; Send handover request ack message to described cell-of-origin, described handover request ack message comprises described PRACH resource distribution, and described PRACH resource distribution is used to indicate described UE to send the PRACH resource that special leader sequence uses.
The embodiment of the invention provides accidental access method, comprise: after handover request ack message is received to Target cell transmission handoff request message and from Target cell in the cell-of-origin, the switching command that the reception sources sub-district sends, described switching command comprises Physical Random Access Channel PRACH resource distribution, described PRACH resource distribution is sent to the cell-of-origin by handover request ack message by Target cell, has a PRACH resource on each frame of described PRACH resource distribution at least; Use the PRACH resource on the frame of described PRACH resource distribution to send special leader sequence to Target cell; The accidental access response that the receiving target sub-district sends.
The embodiment of the invention provides cell control equipment, comprising: the request message receiving element, be used for the handoff request message that the reception sources sub-district sends, and described handoff request message is carried the information of the user equipment (UE) that need switch; The configuration generation unit is used to generate the PRACH resource distribution, has a PRACH resource on each frame of described PRACH resource distribution at least; The response message transmitting element, be used for sending handover request ack message to described cell-of-origin, described handover request ack message comprises the PRACH resource distribution that described configuration generation unit generates, and described PRACH resource distribution is used to indicate described UE to send the PRACH resource that special leader sequence uses.
The embodiment of the invention provides user equipment (UE), comprise: the order receiving element, be used for after handover request ack message is received to Target cell transmission handoff request message and from Target cell in the cell-of-origin, the switching command that the reception sources sub-district sends, described switching command comprises Physical Random Access Channel PRACH resource distribution, described PRACH resource distribution is sent to the cell-of-origin by handover request ack message by Target cell, has a PRACH resource on each frame of described PRACH resource distribution at least; The sequence transmitting element is used to use the PRACH resource on the frame of the PRACH resource distribution that described order receiving element receives to send special leader sequence to Target cell; The response receiving element is used for the accidental access response that the receiving target sub-district sends.
The embodiment of the invention provides communication system, comprise: the Target cell control appliance, be used for the handoff request message that the reception sources cell control equipment sends, generate the PRACH resource distribution, has a PRACH resource on each frame of described PRACH resource distribution at least, send handover request ack message to described cell-of-origin control appliance, described handover request ack message comprises the PRACH resource distribution, and described PRACH resource distribution is used to indicate user equipment (UE) to send the PRACH resource that special leader sequence uses; The cell-of-origin control appliance, be used for sending handoff request message to the Target cell control appliance, described handoff request message is carried the information of the user equipment (UE) that need switch, the handover request ack message that the receiving target cell control equipment sends, send switching command to user equipment (UE), described switching command comprises Physical Random Access Channel PRACH resource distribution; UE, be used for the switching command that the reception sources cell control equipment sends, use the PRACH resource on the frame of the PRACH resource distribution in the described switching command to send special leader sequence to the Target cell control appliance, the accidental access response that the receiving target cell control equipment sends.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages:
UE is after receiving the PRACH resource distribution, use the PRACH resource on the frame of this PRACH resource distribution to send special leader sequence to Target cell, owing to have a PRACH resource at least on each frame of this PRACH resource distribution, no matter UE uses the PRACH resource on which frame to send special leader sequence, Target cell can receive this special leader sequence, inserts at random thereby guarantee success.
Description of drawings
Fig. 1 is embodiment schematic diagram of accidental access method in the embodiment of the invention;
Fig. 2 is another embodiment schematic diagram of accidental access method in the embodiment of the invention;
Fig. 3 is another embodiment schematic diagram of accidental access method in the embodiment of the invention;
Fig. 4 is embodiment schematic diagram of cell control equipment in the embodiment of the invention;
Fig. 5 is another embodiment schematic diagram of cell control equipment in the embodiment of the invention;
Fig. 6 is embodiment schematic diagram of subscriber equipment in the embodiment of the invention;
Fig. 7 is the unified embodiment schematic diagram of communication system in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of accidental access method, subscriber equipment, cell control equipment and system, is used for guaranteeing successfully to insert at random.
See also Fig. 1, specific embodiment of the accidental access method in the embodiment of the invention comprises:
101, receive handoff request message;
Need carry out the sub-district when switching to UE when the cell-of-origin detects, the cell-of-origin sends handoff request message to Target cell, and this handoff request message is carried the information of the user equipment (UE) that need switch, and being used for expression has UE that this Target cell is gone in switching.
Need to prove, in actual applications, can determine whether that need carry out the sub-district to UE switches, also can determine whether to carry out the sub-district and switch by UE self by the cell-of-origin.
In the present embodiment, the cell-of-origin can or can be measured for the signal strength signal intensity that UE provides the geographical position of UE, the distance sources cell control equipment is distant when the geographical position of UE, or the cell-of-origin can be lower than a certain thresholding for the signal strength signal intensity that UE provides, and then the cell-of-origin can determine that this UE need carry out the sub-district and switch.
UE also can measure for the signal strength signal intensity that it provides self geographical position or cell-of-origin, the distance sources cell control equipment is distant when the geographical position of UE, or the cell-of-origin can be lower than a certain thresholding for the signal strength signal intensity that UE provides, and then UE can determine to carry out the sub-district and switches.
Be understandable that in actual applications, cell-of-origin or UE also have more decision whether to need the mode of switching, and specifically do not do qualification herein.
Need to prove that if whether switched by UE self decision, then when switched UE decision carrying out sub-district, UE can send handoff request to the cell-of-origin.
102, generate the PRACH resource distribution;
After Target cell received handoff request message, when determining to have UE to switch into this Target cell, Target cell had a PRACH resource at least for this UE generates the PRACH resource distribution on each frame of this PRACH resource distribution.
103, send handover request ack message to the cell-of-origin.
After generating the PRACH resource distribution, Target cell sends to the cell-of-origin with this PRACH resource distribution by handover request ack message, the PRACH resource that can use when this PRACH resource distribution is used to indicate UE to send special leader sequence.
In the embodiment of the invention, UE is after receiving the PRACH resource distribution, use the PRACH resource on the frame of this PRACH resource distribution to send special leader sequence to Target cell, owing to have a PRACH resource at least on each frame of this PRACH resource distribution, no matter UE uses the PRACH resource on which frame to send special leader sequence, Target cell can receive this special leader sequence, inserts at random thereby guarantee success.
For the ease of understanding, with another embodiment the accidental access method in the embodiment of the invention is described below, specifically see also Fig. 2, another embodiment of the inventive method comprises:
201, receive handoff request message;
The content of the step of describing among this step and the embodiment shown in Figure 1 101 is similar substantially, repeats no more herein.
202, generate the PRACH resource distribution;
After determining to have UE to switch this Target cell, Target cell has a PRACH resource at least for this UE generates the PRACH resource distribution on each frame of this PRACH resource distribution.
Need to prove that the PRACH resource distribution that Target cell generates can only be used for UE switches into this sub-district, and can not change the PRACH resource distribution of this sub-district acquiescence.
For example, in the LTE system, the PRACH cycle of hypothetical target sub-district acquiescence is 20 milliseconds, only the PRACH configuration is arranged in even frame, Target cell is to have a PRACH resource at least on each frame of the PRACH resource distribution that generates of UE, and promptly per 10 milliseconds all have a PRACH resource to make UE can send special leader sequence.
The allocation list of the PRACH resource in the present embodiment is as shown in table 1:
The allocation list of table 1.PRACH resource
Figure BSA00000261185100051
Figure BSA00000261185100061
Figure BSA00000261185100071
In the allocation list of above-mentioned PRACH resource, PRACH Configuration Index represents that the PRACH resource is provided with straw line, Preamble Format represents the leading form that uses, SFN is System FrameNumber, expression contains the numbering of the frame of PRACH resource, and Subframe number is illustrated in the leading initial subframe numbering that takies in the frame that contains the PRACH resource.
If the PRACH cycle of Target cell is 20 milliseconds, the index of the PRACH resource distribution of this Target cell acquiescence is 0, table as can be known in the inquiry, only on the 1st subframe of even frame, the PRACH resource is arranged, receive the handoff request message of cell-of-origin transmission when Target cell after, when promptly confirming to have UE that this Target cell is gone in switching, Target cell generates the PRACH resource distribution for this UE, has a PRACH resource on each frame of this PRACH resource distribution at least, promptly can from last table, choose the PRACH resource distribution of SFN for " ANY ", as seen from the above table, with the index of the PRACH resource distribution that generates is 3 to be example, table has the PRACH resource on the 1st subframe of each frame as can be known in the inquiry, can be used for sending special leader sequence.
Need to prove, table 1 in the present embodiment is Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) allocation list of the PRACH resource under the pattern, be understandable that in actual applications, other pattern to be arranged, time division duplex (TDD for example, Time Division Duplex) pattern, the content class of the allocation list of concrete PRACH resource seemingly repeats no more herein.
203, send handover request ack message;
When Target cell is that Target cell can send to the cell-of-origin by handover request ack message with the PRACH resource distribution after UE generated the PRACH resource distribution.
204, receive special leader sequence;
After the handover request ack message of Target cell transmission is received in the cell-of-origin, can send switching command to UE, this switching command comprises the PRACH resource distribution, UE can use the PRACH resource on the frame of this PRACH resource distribution to send special leader sequence to Target cell, because the PRACH resource distribution that UE receives all has a PRACH resource at least at each frame, so no matter UE sends special leader sequence on which frame, Target cell all can receive the special leader sequence that UE sends.
Target cell can carry out accordingly access operation at random according to this special leader sequence, and implementation is those skilled in the art's a common practise, does not specifically do qualification herein.
205, send accidental access response;
After Target cell receives special leader sequence, can carry out the process that inserts at random, after access is finished at random, can send accidental access response to UE, when UE received this accidental access response, switched the sub-district of carrying out of UE success.
206, discharge the PRACH resource distribution.
Acknowledge receipt of the special leader sequence of UE transmission when Target cell after, be released to the PRACH resource distribution that UE distributes.
Need to prove that step 205 and step 206 do not have sequencing in the embodiment of the invention, can first execution in step 205, also can first execution in step 206., execution in step 205 and step 206 simultaneously do not limit herein yet.
Present embodiment is compared with aforementioned embodiment shown in Figure 1, present embodiment has increased the process that discharges the PRACH resource distribution, present embodiment is except the beneficial effect with Fig. 1 embodiment, also has following beneficial effect, owing to after UE switches Target cell, discharge this PRACH resource distribution, can save channel resource.
Above mainly the accidental access method the embodiment of the invention is described from the angle of Target cell, the angle from UE is described accidental access method of the present invention below, sees also Fig. 3, another object lesson of the embodiment of the invention comprises:
301, receive switching command;
After handover request ack message is received to Target cell transmission handoff request message and from Target cell in the cell-of-origin, the switching command that UE reception sources sub-district sends, this switching command comprises the PRACH resource distribution, this PRACH resource distribution is contained in the handover request ack message that Target cell sends to the cell-of-origin, and has a PRACH resource on each frame of PRACH resource distribution at least.
302, send special leader sequence;
After UE receives switching command, resolve the PRACH resource distribution that this switching command obtains special leader sequence and Target cell, UE uses the PRACH resource on the frame of this PRACH resource distribution to send special leader sequence to Target cell.
303, the accidental access response of receiving target sub-district transmission.
UE can receive accidental access response from Target cell after Target cell sends special leader sequence, and then UE finishes the sub-district switching.
In embodiments of the present invention, UE sends PRACH resource that special leader sequence uses to Target cell and switches into Target cell as UE as Target cell and generate, owing to have a PRACH resource at least on each frame of this PRACH resource distribution, so no matter UE uses the PRACH resource on which frame to send special leader sequence, Target cell can receive this special leader sequence, thereby can make this UE successful switch go into Target cell.
Above content is described the accidental access method in the embodiment of the invention, below cell control equipment is described, and sees also Fig. 4, and an example of the cell control equipment of the embodiment of the invention comprises:
Request message receiving element 401 is used for the handoff request message that the reception sources sub-district sends, and handoff request message is carried the information of the user equipment (UE) that need switch;
Configuration generation unit 402 is used to generate the PRACH resource distribution, has a PRACH resource on each frame of this PRACH resource distribution at least;
Response message transmitting element 403, be used for sending handover request ack message to the cell-of-origin, this handover request ack message comprises the PRACH resource distribution that configuration generation unit 402 generates, and this PRACH resource distribution is used to indicate UE to send the PRACH resource that special leader sequence uses.
When detecting, the cell-of-origin need carry out UE after the sub-district switches, the handoff request message that request message receiving element 401 reception sources sub-districts send, expression has UE that this Target cell is gone in switching, configuration generation unit 402 generates the PRACH resource distribution for this UE, response message transmitting element 403 sends handover request ack message to the cell-of-origin, and this handover request ack message comprises the PRACH resource distribution.
In the embodiment of the invention, UE is after receiving the PRACH resource distribution, use the PRACH resource on the frame of this PRACH resource distribution to send special leader sequence to Target cell, owing to have a PRACH resource at least on each frame of this PRACH resource distribution, no matter UE uses the PRACH resource on which frame to send special leader sequence, Target cell can receive this special leader sequence, inserts at random thereby guarantee success.
For the ease of understanding, with another embodiment the cell control equipment in the embodiment of the invention is described below, specifically see also Fig. 5, another embodiment of cell control equipment comprises in the embodiment of the invention:
Request message receiving element 501 is used for the handoff request message that the reception sources sub-district sends, and handoff request message is carried the information of the user equipment (UE) that need switch;
Configuration generation unit 502 is used to generate the PRACH resource distribution, has a PRACH resource on each frame of this PRACH resource distribution at least;
Response message transmitting element 503, be used for sending handover request ack message to the cell-of-origin, this handover request ack message comprises the PRACH resource distribution that configuration generation unit 502 generates, and this PRACH resource distribution is used to indicate UE to send the PRACH resource that special leader sequence uses;
Sequential reception unit 504 is used to receive the special leader sequence that UE sends;
Access control unit 505, the special leader sequence that is used for receiving according to sequential reception unit 504 is carried out at random and is inserted;
Response transmitting element 506 is used for sending accidental access response to UE;
Configuration releasing unit 507 is used to discharge the PRACH resource distribution that configuration generation unit 502 generates.
When detecting, the cell-of-origin need carry out UE after the sub-district switches, the handoff request message that request message receiving element 501 reception sources sub-districts send, expression has UE that this Target cell is gone in switching, configuration generation unit 502 generates the PRACH resource distribution, then, response message transmitting element 503 sends handover request ack message to the cell-of-origin, the cell-of-origin sends switching command to UE after receiving handover request ack message, comprise the PRACH resource distribution in this switching command, then, UE sends special leader sequence to sequential reception unit 504, response transmitting element 506 sends accidental access response to UE, go into Target cell with expression UE successful switch, last, configuration releasing unit 507 discharges this PRACH resource distribution.
For ease of understanding, be described with a concrete application scenarios each unit below cell control equipment in the present embodiment:
Need carry out the sub-district when switching to UE when the cell-of-origin detects, the cell-of-origin sends handoff request message to Target cell, and being used for expression has UE that this Target cell is gone in switching, and then request message receiving element 501 can receive handoff request message from the cell-of-origin.
After request message receiving element 501 received handoff request message from the cell-of-origin, configuration generation unit 502 had a PRACH resource at least for this UE generates the PRACH resource distribution on each frame of this PRACH resource distribution.
Need to prove that the PRACH resource distribution that Target cell generates can only be used for UE switches into this sub-district, and can not change the PRACH resource distribution of this sub-district acquiescence.
For example, the PRACH cycle of Target cell acquiescence is 20 milliseconds, SFN is an even frame, and Target cell is to have a PRACH resource at least on each frame of the PRACH resource distribution that generates of UE, and promptly per 10 milliseconds all have a PRACH resource to make UE can send special leader sequence.
After configuration generation unit 502 generated the PRACH resource distribution for UE, response message transmitting element 503 can send to the cell-of-origin by handover request ack message with the PRACH resource distribution.
After the handover request ack message of response message transmitting element 503 transmissions is received in the cell-of-origin, can send switching command to UE, this switching command comprises the PRACH resource distribution, UE can use the PRACH resource on the frame of this PRACH resource distribution to send special leader sequence to Target cell, sequential reception unit 504 can receive the special leader sequence that UE sends, and represents that this UE can switch into this Target cell.
After sequential reception unit 504 received special leader sequence, access control unit 505 can be carried out at random according to this special leader sequence and insert, and responds transmitting element 506 afterwards and can send accidental access response to UE.
Acknowledge receipt of the special leader sequence of UE transmission when sequential reception unit 504 after, configuration releasing unit 507 can be released to the PRACH resource distribution that UE distributes.
Above the cell control equipment in the embodiment of the invention is described, introduces subscriber equipment below, see also Fig. 6, an object lesson of the subscriber equipment of the embodiment of the invention comprises:
Order receiving element 601, be used for the switching command that the reception sources sub-district sends, this switching command comprises the PRACH resource distribution, this PRACH resource distribution is contained in the handover request ack message that Target cell sends to the cell-of-origin, and has a PRACH resource on each frame of PRACH resource distribution at least;
Sequence transmitting element 602, the PRACH resource that is used on the frame of the PRACH resource distribution that utility command receiving element 601 receives sends special leader sequence to Target cell;
Response receiving element 603 is used for the accidental access response that the receiving target sub-district sends.
After handover request ack message is received to Target cell transmission handoff request message and from Target cell in the cell-of-origin, the switching command that order receiving element 601 reception sources sub-districts send, this switching command comprises the PRACH resource distribution, then, the PRACH resource on the frame of sequence transmitting element 602 these PRACH resource distributions of use sends special leader sequence to Target cell.
UE is after receiving the PRACH resource distribution, use the PRACH resource on the frame of this PRACH resource distribution to send special leader sequence to Target cell, owing to have a PRACH resource at least on each frame of this PRACH resource distribution, no matter UE uses the PRACH resource on which frame to send special leader sequence, Target cell can receive this special leader sequence, thereby can successfully insert at random.
The foregoing description has been introduced subscriber equipment, introduces a kind of communication system below, sees also Fig. 7, and an object lesson of the communication system of the embodiment of the invention comprises:
Target cell control appliance 701, be used for the handoff request message that reception sources cell control equipment 702 sends, generate the PRACH resource distribution, has a PRACH resource on each frame of this PRACH resource distribution at least, send handover request ack message to cell-of-origin control appliance 702, handover request ack message comprises the PRACH resource distribution, and the PRACH resource distribution is used to indicate subscriber equipment 703 to send the PRACH resource that special leader sequence uses;
Cell-of-origin control appliance 702, be used for sending handoff request message to Target cell control appliance 701, this handoff request message is carried the information of the user equipment (UE) that need switch, the handover request ack message that receiving target cell control equipment 701 sends, send switching command to subscriber equipment 703, switching command comprises Physical Random Access Channel PRACH resource distribution;
Subscriber equipment 703, be used for the switching command that reception sources cell control equipment 702 sends, PRACH resource on the frame of the PRACH resource distribution in the use switching command sends special leader sequences to Target cell control appliance 701, the accidental access response that receiving target cell control equipment 701 sends.
In the present embodiment, PRACH resource on the frame of the PRACH resource distribution that subscriber equipment 703 use Target cell control appliances 701 generate sends special leader sequences to Target cell control appliance 701, and has a PRACH resource on each frame of this PRACH resource distribution at least, so no matter UE uses the PRACH resource on which frame to send special leader sequence, can make subscriber equipment 703 successful switch to Target cell.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
More than a kind of accidental access method provided by the present invention, subscriber equipment, cell control equipment and system are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (10)

1. an accidental access method is characterized in that, comprising:
The handoff request message that the reception sources sub-district sends, described handoff request message is carried the information of the user equipment (UE) that need switch;
Generate Physical Random Access Channel PRACH resource distribution, have a PRACH resource on each frame of described PRACH resource distribution at least;
Send handover request ack message to described cell-of-origin, described handover request ack message comprises described PRACH resource distribution, and described PRACH resource distribution is used to indicate described UE to send the PRACH resource that special leader sequence uses.
2. accidental access method according to claim 1 is characterized in that, describedly comprises after the cell-of-origin sends handover request ack message:
Receive the special leader sequence that described UE sends;
Carry out access at random according to described special leader sequence;
Send accidental access response to described UE.
3. accidental access method according to claim 2 is characterized in that, comprises after the special leader sequence that described reception UE sends:
Discharge the PRACH resource distribution of described generation.
4. according to each described accidental access method in the claim 1 to 3, it is characterized in that described generation Physical Random Access Channel PRACH resource distribution comprises:
Selecting system frame number parameter is the PRACH resource distribution of ANY from PRACH resource distribution table.
5. an accidental access method is characterized in that, comprising:
After handover request ack message is received to Target cell transmission handoff request message and from Target cell in the cell-of-origin, the switching command that the reception sources sub-district sends, described switching command comprises Physical Random Access Channel PRACH resource distribution, described PRACH resource distribution is sent to the cell-of-origin by handover request ack message by Target cell, has a PRACH resource on each frame of described PRACH resource distribution at least;
Use the PRACH resource on the frame of described PRACH resource distribution to send special leader sequence to Target cell;
The accidental access response that the receiving target sub-district sends.
6. a cell control equipment is characterized in that, comprising:
The request message receiving element is used for the handoff request message that the reception sources sub-district sends, and described handoff request message is carried the information of the user equipment (UE) that need switch;
The configuration generation unit is used to generate the PRACH resource distribution, has a PRACH resource on each frame of described PRACH resource distribution at least;
The response message transmitting element, be used for sending handover request ack message to described cell-of-origin, described handover request ack message comprises the PRACH resource distribution that described configuration generation unit generates, and described PRACH resource distribution is used to indicate described UE to send the PRACH resource that special leader sequence uses.
7. cell control equipment according to claim 6 is characterized in that, described cell control equipment also comprises:
The sequential reception unit is used to receive the special leader sequence that described UE sends;
The access control unit, the special leader sequence that is used for receiving according to described sequential reception unit is carried out at random and is inserted;
The response transmitting element is used for sending accidental access response to described UE.
8. cell control equipment according to claim 7 is characterized in that, described cell control equipment also comprises:
The configuration releasing unit is used to discharge the PRACH resource distribution that described configuration generation unit generates.
9. a user equipment (UE) is characterized in that, comprising:
The order receiving element, be used for after handover request ack message is received to Target cell transmission handoff request message and from Target cell in the cell-of-origin, the switching command that the reception sources sub-district sends, described switching command comprises Physical Random Access Channel PRACH resource distribution, described PRACH resource distribution is sent to the cell-of-origin by handover request ack message by Target cell, has a PRACH resource on each frame of described PRACH resource distribution at least;
The sequence transmitting element is used to use the PRACH resource on the frame of the PRACH resource distribution that described order receiving element receives to send special leader sequence to Target cell;
The response receiving element is used for the accidental access response that the receiving target sub-district sends.
10. a communication system is characterized in that, comprising:
The Target cell control appliance, be used for the handoff request message that the reception sources cell control equipment sends, generate the PRACH resource distribution, has a PRACH resource on each frame of described PRACH resource distribution at least, send handover request ack message to described cell-of-origin control appliance, described handover request ack message comprises the PRACH resource distribution, and described PRACH resource distribution is used to indicate user equipment (UE) to send the PRACH resource that special leader sequence uses;
The cell-of-origin control appliance, be used for sending handoff request message to the Target cell control appliance, described handoff request message is carried the information of the user equipment (UE) that need switch, the handover request ack message that the receiving target cell control equipment sends, send switching command to user equipment (UE), described switching command comprises Physical Random Access Channel PRACH resource distribution;
UE, be used for the switching command that the reception sources cell control equipment sends, use the PRACH resource on the frame of the PRACH resource distribution in the described switching command to send special leader sequence to the Target cell control appliance, the accidental access response that the receiving target cell control equipment sends.
CN201010273394XA 2010-09-03 2010-09-03 Random access method, user equipment, cell control equipment and system Pending CN101932106A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201010273394XA CN101932106A (en) 2010-09-03 2010-09-03 Random access method, user equipment, cell control equipment and system
PCT/CN2011/075344 WO2011147363A1 (en) 2010-09-03 2011-06-03 Random access method and user equipment, cell control device and system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010273394XA CN101932106A (en) 2010-09-03 2010-09-03 Random access method, user equipment, cell control equipment and system

Publications (1)

Publication Number Publication Date
CN101932106A true CN101932106A (en) 2010-12-29

Family

ID=43370931

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201010273394XA Pending CN101932106A (en) 2010-09-03 2010-09-03 Random access method, user equipment, cell control equipment and system

Country Status (2)

Country Link
CN (1) CN101932106A (en)
WO (1) WO2011147363A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011147363A1 (en) * 2010-09-03 2011-12-01 华为技术有限公司 Random access method and user equipment, cell control device and system thereof
CN102651894A (en) * 2011-02-28 2012-08-29 华为技术有限公司 Cell switching method, terminal equipment, base station equipment and communication system
WO2014166358A1 (en) * 2013-04-07 2014-10-16 电信科学技术研究院 Method and device for cell switching
CN105682232A (en) * 2016-01-08 2016-06-15 宇龙计算机通信科技(深圳)有限公司 Resource configuration method, resource configuration device and base station
CN107659969A (en) * 2017-09-15 2018-02-02 武汉虹信通信技术有限责任公司 The method and device of handover success rate is improved in Rail Transit System
CN108419269A (en) * 2017-02-10 2018-08-17 中国移动通信有限公司研究院 Configuration method, cut-in method based on speed class and device
CN110062428A (en) * 2018-01-19 2019-07-26 中兴通讯股份有限公司 A kind of Cell Radio Network Temporary Identifier/Identity, Cell-RNTI distribution method, apparatus and system
US11452138B2 (en) 2017-05-16 2022-09-20 Vivo Mobile Communication Co., Ltd. Random access method, user equipment, source base station and target base station

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013116998A1 (en) * 2012-02-08 2013-08-15 Renesas Mobile Corporation Control mechanism for communication via different frequency bands

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1491522A (en) * 2001-04-18 2004-04-21 �ƶ��Ѷ��� Method for reducing radio channel access delay in wireless communication system
US20070211671A1 (en) * 2006-03-09 2007-09-13 Interdigital Technology Corporation Method and apparatus for a flexible preamble and efficient transmission thereof
CN101132638A (en) * 2007-09-10 2008-02-27 中兴通讯股份有限公司 Method for acquiring propagation delay from physical random access signal channel
CN101242669A (en) * 2008-03-19 2008-08-13 中兴通讯股份有限公司 A physical random access channel parameter configuration and indication method in time division duplex system
CN101483919A (en) * 2008-01-08 2009-07-15 华为技术有限公司 Wireless resource allocation method used for stochastic access and base band equipment
EP2214450A2 (en) * 2009-02-03 2010-08-04 Samsung Electronics Co., Ltd. Physical channel communication method for random access in wireless communication system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101765157A (en) * 2008-12-26 2010-06-30 中兴通讯股份有限公司 Allocation method of specific leader sequence resources
CN101932106A (en) * 2010-09-03 2010-12-29 华为技术有限公司 Random access method, user equipment, cell control equipment and system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1491522A (en) * 2001-04-18 2004-04-21 �ƶ��Ѷ��� Method for reducing radio channel access delay in wireless communication system
US20070211671A1 (en) * 2006-03-09 2007-09-13 Interdigital Technology Corporation Method and apparatus for a flexible preamble and efficient transmission thereof
CN101132638A (en) * 2007-09-10 2008-02-27 中兴通讯股份有限公司 Method for acquiring propagation delay from physical random access signal channel
CN101483919A (en) * 2008-01-08 2009-07-15 华为技术有限公司 Wireless resource allocation method used for stochastic access and base band equipment
CN101242669A (en) * 2008-03-19 2008-08-13 中兴通讯股份有限公司 A physical random access channel parameter configuration and indication method in time division duplex system
EP2214450A2 (en) * 2009-02-03 2010-08-04 Samsung Electronics Co., Ltd. Physical channel communication method for random access in wireless communication system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011147363A1 (en) * 2010-09-03 2011-12-01 华为技术有限公司 Random access method and user equipment, cell control device and system thereof
CN102651894A (en) * 2011-02-28 2012-08-29 华为技术有限公司 Cell switching method, terminal equipment, base station equipment and communication system
CN102651894B (en) * 2011-02-28 2016-12-28 华为技术有限公司 Method, terminal unit, base station equipment and the communication system of community switching
WO2014166358A1 (en) * 2013-04-07 2014-10-16 电信科学技术研究院 Method and device for cell switching
CN105682232A (en) * 2016-01-08 2016-06-15 宇龙计算机通信科技(深圳)有限公司 Resource configuration method, resource configuration device and base station
CN105682232B (en) * 2016-01-08 2018-03-16 宇龙计算机通信科技(深圳)有限公司 Resource allocation method, device for allocating resources and base station
CN108419269A (en) * 2017-02-10 2018-08-17 中国移动通信有限公司研究院 Configuration method, cut-in method based on speed class and device
US11452138B2 (en) 2017-05-16 2022-09-20 Vivo Mobile Communication Co., Ltd. Random access method, user equipment, source base station and target base station
CN107659969A (en) * 2017-09-15 2018-02-02 武汉虹信通信技术有限责任公司 The method and device of handover success rate is improved in Rail Transit System
CN107659969B (en) * 2017-09-15 2020-09-08 武汉虹信通信技术有限责任公司 Method and device for improving switching success rate in rail transit system
CN110062428A (en) * 2018-01-19 2019-07-26 中兴通讯股份有限公司 A kind of Cell Radio Network Temporary Identifier/Identity, Cell-RNTI distribution method, apparatus and system

Also Published As

Publication number Publication date
WO2011147363A1 (en) 2011-12-01

Similar Documents

Publication Publication Date Title
CN101932106A (en) Random access method, user equipment, cell control equipment and system
US11039357B2 (en) Handover method in mobile communication system
EP4044669A1 (en) Cell condition updating method, user equipment and computer-readable storage medium
CN102932837B (en) For the method and apparatus that the timing advance group of detected cells changes
CN107925937B (en) Mobility for beamforming systems
CN107872856B (en) Method and device for reducing switching time delay
US10616785B2 (en) Method and apparatus for determining application time of CSI report, and device
US11246108B2 (en) Method and device for transmitting and receiving synchronization signal block in 5G system
CN104754759B (en) A kind of RRC state transfer control and data transmission method, equipment and system
EP3905759A1 (en) Information configuration method, data transmission method, and apparatus
CN107889174B (en) Switching method, terminal equipment, base station and system
CN114070676A (en) Method and device for reporting and receiving AI network model support capability, storage medium, user equipment and base station
RU2008132875A (en) METHOD AND DEVICE FOR PERFORMING THE PROCEDURE OF TEMPORARY SYNCHRONIZATION OF THE RISING COMMUNICATION LINES WHEN TRANSFERRING SERVICE IN THE MOBILE COMMUNICATION SYSTEM
EP3468292B1 (en) Transition state methods, devices and products
US9924428B2 (en) Quick transmission point handover method, handover device, service base station and terminal
JP2009542063A (en) Method for performing handover processing of user terminal on radio interface, base station and network therefor
JP4690467B2 (en) Intermittent communication system, base station apparatus and mobile station apparatus
WO2011157164A1 (en) Method, device and system for cell detection
CN112867079A (en) Method, device, system and storage medium for switching service cell in station
CN110635874A (en) Method and device for triggering SRS transmission
CN110572854A (en) Beam recovery method, system, base station, terminal and computer-readable storage medium
CN103037499B (en) Determine the method for Timing Advance, equipment and system
CN104662963A (en) Method, apparatus and system for access of terminals to base station system
CN101754111A (en) Method for transmitting MBMS business data, equipment and communication system
EP2915391A1 (en) Scheduling request transmission method and apparatus for decoupled downlink-uplink

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20101229