CN106604406A - Uplink channel reserving method in random access process - Google Patents
Uplink channel reserving method in random access process Download PDFInfo
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- CN106604406A CN106604406A CN201610274512.6A CN201610274512A CN106604406A CN 106604406 A CN106604406 A CN 106604406A CN 201610274512 A CN201610274512 A CN 201610274512A CN 106604406 A CN106604406 A CN 106604406A
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- mobile station
- signaling
- base station
- random access
- stochastic accessing
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 230000008569 process Effects 0.000 title abstract description 7
- 230000011664 signaling Effects 0.000 claims abstract description 55
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 230000001174 ascending effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 6
- 101100274486 Mus musculus Cited2 gene Proteins 0.000 description 5
- 101150096622 Smr2 gene Proteins 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 101100533725 Mus musculus Smr3a gene Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
-
- 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
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses an uplink channel reserving method in random access process. The method comprises the following steps: accessing a cell's broadcasting by a mobile station to obtain the downlink synchronization state; transmitting by the mobile station the random access instructing information with temporary random identification of the mobile station to a base station through an uplink time slot with a random access collision detection zone; sending by the base station the command with the temporary random identification and the synchronization adjustment reported by the mobile station to the mobile station through a downlink time slot with a common signaling area; and instructing the mobile station to carry out synchronization adjustment and send signaling upwards; receiving by the mobile station the downlink control signaling sent from the base station; through an uplink time slot with a common signaling area, sending upwards the signaling that needs to be reported upwards to the base station; and sending downwards by the base station the responding signaling with the mobile station identification to confirm the information of the mobile station and then completing the random access process. With the technical schemes of the invention, channel occupation related collisions can be reduced and the success rate for random access process is increased.
Description
Technical field
The present invention relates to the radio access technology in broadband cluster system, up channel is pre- in more particularly to a kind of random access procedure
The method stayed.
Background technology
The signaling sending method of group system is shared channel mode, i.e., all mobile stations send at random on certain common signal channel,
This mechanism is possible to have multiple mobile stations to send signaling on the same channel in same time point, so as to cause to send signaling punching
It is prominent.
In broadband cluster system, any signaling or business are not sent because mobile station is possible to long-time, it is up so as to be in
Desynchronizing state, thus mobile station initiate service access before be required for obtaining uplink sync status by random access procedure.With
Machine access procedure is in very important status in whole business procedure, and what its success rate directly influenced user finally uses body
Test.Due to depositing the abnormal conditions that on a shared channel up signaling is clashed, the success rate of random access procedure can be caused
Reduce.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, the reserved side of up channel in a kind of random access procedure is proposed
Method, to reach the situation that channel seizes conflict that reduces, improves the success rate target of random access procedure.
The technical solution adopted for the present invention to solve the technical problems is：
The reserved method of up channel, is applied to be made up of at least one base station and one group of mobile station in a kind of random access procedure
Broadband cluster system in, including：
Mobile station reads Cell Broadcast CB, obtains down-going synchronous state；
Mobile station indicates message to base station by detecting that an ascending time slot of battleground sends Stochastic accessing with Stochastic accessing；Institute
State Stochastic accessing and indicate that message carries the interim random identification of the mobile station；
Base station is detected after Mobile Origination Stochastic accessing, calculates the uplink synchronous offset parameter of mobile station, by with public letter
A descending time slot for making area issues control signaling to mobile station, carries in the control signaling for indicating with Stochastic accessing inspection
The common signaling area channel reservation Warning Mark being reserved for surveying the ascending time slot of battleground, the movement for getting Stochastic accessing right
Interim random identification and synchronization adjustment command that platform is reported, indicate that the mobile station synchronizes adjustment and upper signaling；
After receiving the descending control signaling of base station transmission, the mobile station of Stochastic accessing right is got by with common signaling area
An ascending time slot on send out needed for the signaling that reports to base station；
Base station is received after the signaling sent out in the mobile station, issues the response signaling for carrying mobile station identification to the mobile station
Message confirmed, completes random access procedure.
The interim random identification is unique between multiple mobile stations that synchronization initiates Stochastic accessing.
The simultaneous bias parameter sends a message to the time span up to base station including mobile station.
The beneficial effect brought of technical scheme that the present invention is provided is：Propose the reserved side of up channel in a kind of random access procedure
Method, reduces the situation that channel seizes conflict, improves the success rate of random access procedure.
The present invention is described in further detail below in conjunction with drawings and Examples, but in a kind of random access procedure of the present invention on
The method of row channel reservation is not limited to embodiment.
Description of the drawings
Fig. 1 is the main flow chart of the inventive method；
Fig. 2 is the frame structure format exemplary plot of the inventive method；
Fig. 3 is the channel architecture exemplary plot on the Slot0 of the inventive method；
Fig. 4 is the channel architecture exemplary plot on the Slot3 of the inventive method；
Fig. 5 is the mobile station login process of the inventive method；
Fig. 6 is the increase channel reservation Warning Mark exemplary plot of the inventive method；
Fig. 7 is the Msg2 message structure exemplary plots of the inventive method.
Specific embodiment
Referring to Fig. 1, the reserved method of up channel, is applied to by least one base station in a kind of random access procedure of the present invention
In the broadband cluster system of one group of mobile station composition, comprise the steps：
Step 101：Mobile station reads Cell Broadcast CB, obtains down-going synchronous state；
Step 102：Mobile station indicates message by detecting that an ascending time slot of battleground sends Stochastic accessing with Stochastic accessing
To base station；The Stochastic accessing indicates that message carries the interim random identification of the mobile station；
Step 103：Base station is detected after Mobile Origination Stochastic accessing, calculates the uplink synchronous offset parameter of mobile station, is passed through
With common signaling area descending time slot issues control signaling to mobile station, carries in the control signaling and is carried for instruction
Stochastic accessing detection battleground ascending time slot common signaling area be reserved channel reservation Warning Mark, get Stochastic accessing
Interim random identification and synchronization adjustment command that the mobile station of right is reported, indicate the mobile station synchronize adjustment and on transmit
Order；
Step 104：After receiving the descending control signaling of base station transmission, the mobile station of Stochastic accessing right is got by carrying
The signaling reported needed for sending out on one ascending time slot in common signaling area is to base station；
Step 105：Base station is received after the signaling sent out in the mobile station, issues the response signaling for carrying mobile station identification to institute
The message for stating mobile station confirmed, completes random access procedure.
In the present embodiment, correlation function implementation method, frame structure lattice are illustrated by taking a kind of 4 slotted frame structure broadband cluster system as an example
Formula can be three kinds of forms as shown in Figure 2, and wireless frame length is 20ms, divides 6 time slots：Slot0 (descending), Slot1
(upstream or downstream), Slot2 (upstream or downstream), Slot3 (up), dl sync slot (downlink synchronization slot), and 1
Individual protection interval GP.Slot0, Slot1, Slot2, Slot3 are data slot.
Specifically, there is shared channel region on Slot0 and Slot3 for transmitting common signaling, such as：Cell Broadcast CB, Stochastic accessing
During signaling, link establishment signaling etc..There is random access collision detection zone on Slot3, send for mobile station and connect at random
Enter to indicate.Channel architecture on Slot0 is as shown in figure 3, the channel architecture on Slot3 is as shown in Figure 4.
In the present embodiment, random access procedure is specific as follows：
Mobile station (MS) obtains down-going synchronous state after Cell Broadcast CB is read, in n-th frame (n is more than or equal to 1) Slot3
Stochastic accessing detection battleground send Stochastic accessing indicate, wherein carry mobile station interim random identification, so as to base station (BS)
Distinguish when receiving and initiate multiple mobile stations of Stochastic accessing simultaneously (interface-free resources of collision detection area distribution are more, can adopt
Special reliable algorithm is detected that, such as the Preamble ID detection methods used using LTE protocol, this message is referred to as
Msg1).Base station is after Mobile Origination Stochastic accessing that may be present is detected, and this is moved to calculate acquisition according to certain algorithm
The uplink synchronous offset parameter of dynamic platform, such as mobile station sending signal reach the time span of base station, afterwards in the n-th+2 frame Slot0
Common signaling area issue control signaling (this message is referred to as mobile station Msg2), wherein carrying the interim random mark that reports of mobile station
Know and synchronization adjustment command, indicate that this mobile station is synchronized and adjust and upper control signaling.Mobile station is receiving this descending control
After signaling, the up signaling reported required for sending out in the common signaling area of the n-th+2 frame slot3, such as：Cell registration or
Synchronous recovery request etc., this step operation finally determines that above-mentioned mobile station Msg2 is for this shifting also for by Signalling exchange
What dynamic platform was issued.After the signaling that base station is sent out on user is received, issue response signaling in the n-th+4 frame Slot0 and (wherein carry
Mobile station ID), so as to confirm to mobile station, it is finally completed random access procedure.By taking mobile station login process as an example, tool
Body flow process is as shown in Figure 5.
Specifically, channel reservation method of the invention is by the increase channel reservation Warning Mark in the Msg2 that the n-th+2 frame sends,
Indicate that common signaling area is reserved on this frame slot3, do not allow other mobile stations to send any signaling, hence in so that initiating random
The mobile station of access can monopolize the common signaling channel of this time slot, occur channel punching when Msg3 is sent so as to avoid mobile station
The prominent problem seized, as shown in Figure 6.
Specifically, the message structure of Msg2 is as shown in fig. 7, each explanation of field such as following table：
This channel reservation method can also be used for other and can predict the scene that there is up signaling transmission demand, such as：Base station to purpose is moved
When dynamic platform transmission link sets up request, link establishment response can be replied for mobile station and reserve up shared signaling channel.
The beneficial effect brought of technical scheme that the present invention is provided is：Propose the reserved side of up channel in a kind of random access procedure
Method, reduces the situation that channel seizes conflict, improves the success rate of random access procedure.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, it is all the spirit and principles in the present invention it
Interior, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (3)
1. a kind of reserved method of up channel in random access procedure, is applied to by least one base station and one group of mobile station group
Into broadband cluster system in, it is characterised in that include：
Mobile station reads Cell Broadcast CB, obtains down-going synchronous state；
Mobile station indicates message to base station by detecting that an ascending time slot of battleground sends Stochastic accessing with Stochastic accessing；Institute
State Stochastic accessing and indicate that message carries the interim random identification of the mobile station；
Base station is detected after Mobile Origination Stochastic accessing, calculates the uplink synchronous offset parameter of mobile station, by with public letter
A descending time slot for making area issues control signaling to mobile station, carries in the control signaling for indicating with Stochastic accessing inspection
The common signaling area channel reservation Warning Mark being reserved for surveying the ascending time slot of battleground, the movement for getting Stochastic accessing right
Interim random identification and synchronization adjustment command that platform is reported, indicate that the mobile station synchronizes adjustment and upper signaling；
After receiving the descending control signaling of base station transmission, the mobile station of Stochastic accessing right is got by with common signaling area
An ascending time slot on send out needed for the signaling that reports to base station；
Base station is received after the signaling sent out in the mobile station, issues the response signaling for carrying mobile station identification to the mobile station
Message confirmed, completes random access procedure.
2. the method that up channel is reserved in random access procedure according to claim 1, it is characterised in that：It is described to face
When random identification synchronization initiate Stochastic accessing multiple mobile stations between be unique.
3. the method that up channel is reserved in random access procedure according to claim 1, it is characterised in that：
The simultaneous bias parameter sends a message to the time span up to base station including mobile station.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610274512.6A CN106604406A (en) | 2016-04-28 | 2016-04-28 | Uplink channel reserving method in random access process |
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| CN201610274512.6A CN106604406A (en) | 2016-04-28 | 2016-04-28 | Uplink channel reserving method in random access process |
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| CN106604406A true CN106604406A (en) | 2017-04-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110418419A (en) * | 2018-04-28 | 2019-11-05 | 中国移动通信有限公司研究院 | A kind of accidental access method, terminal and the network equipment |
| CN110475306A (en) * | 2019-08-24 | 2019-11-19 | 江苏久鑫铜业有限公司 | A kind of implementation method of no random access channel switching |
| CN110971364A (en) * | 2018-09-28 | 2020-04-07 | 华为技术有限公司 | Method and device for transmitting downlink control information |
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| CN110418419A (en) * | 2018-04-28 | 2019-11-05 | 中国移动通信有限公司研究院 | A kind of accidental access method, terminal and the network equipment |
| CN110971364A (en) * | 2018-09-28 | 2020-04-07 | 华为技术有限公司 | Method and device for transmitting downlink control information |
| CN110971364B (en) * | 2018-09-28 | 2021-04-09 | 华为技术有限公司 | Method and device for transmitting downlink control information |
| CN110475306A (en) * | 2019-08-24 | 2019-11-19 | 江苏久鑫铜业有限公司 | A kind of implementation method of no random access channel switching |
| CN110475306B (en) * | 2019-08-24 | 2021-09-17 | 江苏久鑫铜业有限公司 | Method for realizing channel switching without random access |
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