CN100417249C - Upward auess-in method and apparatus - Google Patents
Upward auess-in method and apparatus Download PDFInfo
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- CN100417249C CN100417249C CNB2005101166823A CN200510116682A CN100417249C CN 100417249 C CN100417249 C CN 100417249C CN B2005101166823 A CNB2005101166823 A CN B2005101166823A CN 200510116682 A CN200510116682 A CN 200510116682A CN 100417249 C CN100417249 C CN 100417249C
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
- H04W74/0875—Non-scheduled access, e.g. ALOHA using a dedicated channel for access with assigned priorities based access
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Abstract
The present invention discloses an uplink access method. In the method, after uplink access requests initiated by terminal devices are collided, retransmission random intervals are created according to users' priorities, wherein the retransmission random intervals of the high priority users are smaller than that of low priority users. Moreover, the terminal devices retransmit the uplink access requests after the delay of the retransmission random intervals. The present invention also discloses the terminal devices which comprise transmitting units and interval generating units, wherein the transmitting units are used for transmitting the uplink access requests; the interval generating units are used for generating the retransmission random intervals which are used for controlling the transmitting units to retransmit the uplink access requests. The present invention controls the secondary access time of the users according to the users' priorities, and thus, the prior channel occupation of the low priority users is avoided so that the priorities of the high priority users are ensured.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of up-link access method and device.
Background technology
The GT800 digital cluster system is based on the TDMA technical system, short calling in capacity in the public mobile network is big, individual professional abundant and the Digital Clustering technology, shared channel, the characteristics that scheduling feature is powerful merge, and can fully satisfy the user's request of cluster private network, common network.The GT800 digital cluster system is based on the GSM technology of maturation, with reference to using for reference the traffic performance of existing ripe group system in the world, call flow and network configuration to existing GSM network are optimized, expand, and make the GT800 system possess the performance index and the dispatching of professional Trunked Radio System.
Compare with existing group system, GT800 is abundanter on business function, can provide that individual calling, group calling, function addressing, dynamically reorganization, multipriority, distant getting killed/brings back to life, environment are intercepted, group service characteristics such as fail soft, VPN, End to End Encryption, terminal are led directly to, location and group's note; In data transmission, the grouped data ability can reach 200kbps.
In Clustering, in the trunked call group a plurality of users are arranged.Different user can be applied for different priority according to the power difference in group, and User Priority is commonly defined as 8 grades in the group.The priority of definition generally is used to pass judgment on the rank of calling in the group, the priority level of handling when determining the common preempting resources of a plurality of callings, and calling subscriber's priority is the priority of this calling.
The multipriority business is meant that high-priority users preferentially obtains the service that group system provides, and specifically comprises two layers of meaning:
(1) in group-calling process, same group of interior high-priority users can be seized the right of speech of low priority user, thus preferential speech.
When (2) user in being in communication receives the communication of higher priority, then stop its former calling or keep former calling, guarantee the high-priority traffic connection.
In a communication network that contains many transmitters (terminal equipment), every transmitter sends packets of information by same IA High Speed Channel to main platform at any time, and packets of information adopts error detection coding.When two above transmitters send simultaneously, packets of information " collision " or overlapping just can take place, thereby cause losing or mistake of packets of information.In order to recover to lose or wrong packets of information, network side utilizes the feedback channel of a special use to send confirmation signal to each terminal, and network side is deciphered the letter bag of receiving, if discovery is error-free, then beams back an answer signal (ACK) that expression is correct.If terminal still can not receive ACK after distributing information in the time of a qualification,, avoid secondary collision just retransmit the letter bag according to certain random time.If receive the ACK of non-terminal, then stop to send the letter bag.
GT800 adopts pure ALOHA access technology, owing to adopted the group call uplink channel to fight for mode, a plurality of members fight for the situation of up channel simultaneously in the possible existence group, causes the network decoding failure after the collision.The user of collision seizes unsuccessful, and in the certain hour section after collision, the user fights for up channel again according to predetermined rule.
Because after being defined in up application appearance collision in the prior art, all are with adopting the identical repeating transmission random interval time per family, thereby cause the user of low priority to arrive channel than user's first to file of high priority, cause the priority of high-priority users not to be guaranteed, can not obtain Priority Service.
Summary of the invention
The invention provides a kind of up-link access method and device, occur to guarantee that high-priority users preferentially obtains the problem of serving after the collision in up access request to solve prior art.
The invention provides following technical scheme:
A kind of up-link access method comprises the steps:
After terminal equipment is initiated up access request, if the response of in the default time interval, not receiving network side, then obtain User Priority corresponding intervals fiducial time, and in the predetermined scope of duration at random, produce a random time, as retransmitting the random interval time, and the repeating transmission random interval time of high-priority users is less than the repeating transmission random interval time of low priority user with described interval fiducial time and random time sum; And
Terminal equipment is postponing to resend up access request after the described repeating transmission random interval time.
Wherein:
Described interval fiducial time according to the rules the longest interval fiducial time and the level data of User Priority determine.
User Priority and the corresponding relation of fiducial time are at interval formed tabulation, and this tabulation is kept in the terminal equipment.
With User Priority corresponding intervals fiducial time as parameter configuration in terminal equipment.
Described user is the user in the group system; Described User Priority is the priority of user in the group.
Described group system is the GT800 group system.
A kind of terminal equipment comprises:
Transmitting element is used to send up access request;
Memory cell is used for preserving and User Priority corresponding intervals fiducial time;
Blanking time generation unit, be used for after described transmitting element sends up access request, if the response of in the default time interval, not receiving network side, then from described memory cell, obtain User Priority corresponding intervals fiducial time, and in the predetermined scope of duration at random, produce a random time, with described interval fiducial time and random time sum, control the repeating transmission random interval time that described transmitting element resends up access request as being used to, and the repeating transmission random interval time of high-priority users is less than the repeating transmission random interval time of low priority user.
Adopt technical scheme of the present invention, after can in group service, realizing up channel application collision,, avoid the preferential busy channel of low priority user according to the secondary turn-on time of priority control different user, thereby can guarantee the priority of high-priority users, its preferential acquisition is served.
Description of drawings
Fig. 1 is a flow chart of the present invention;
Fig. 2 is the structural representation of terminal equipment of the present invention.
Embodiment
Present embodiment is that example describes with the GT800 system.
The priority service of GT800 system is only seized middle use in speech channel at present, and the user of high priority takies the speech channel of low priority user by force by seizing, and guarantees the conversation right of high-priority users.
In present 3GPP 44018 agreements, terminal equipment waits for that after sending up access request 100ms does not receive that the response of network side is then thought and up collision (that is: 100ms is the maximum time that the terminal equipment acquiescence should be received the network response) occurs, and all that up collision occurs are initiated the up access request of secondary again with random delay sheet unified time 0～20ms per family.
In priority service, when low priority user in when speech, in the high-priority users preemption processes, may exist has the medium priority user also to seize simultaneously, collision occurs seizing, causes the network decoding failure, seizes unsuccessful.The certain retransmission interval of random delay together then, possible medium priority user sends successfully earlier, causes high-priority users to seize failure.
Under the current situation that does not have a user from occupying up-channel, when the usefulness of two different priorities is applied for up channel per family simultaneously, all unsuccessful after the collision, the retransmission interval that random delay is certain, possible low priority user sends successfully earlier, causes high-priority users to account for have more than is needed channel.
For fear of occurring low priority user sends the up access request of secondary faster than high-priority users situation when the up access request of secondary, the present invention retransmits the time interval according to priority level initializing, different priority users sends the up access request of secondary after the different repeating transmission time intervals, and high more its repeating transmission time interval of User Priority is then short more.
In order to address the above problem, the present invention increases priority resending on the up access mechanism, and the high-priority users random delay is short, and the low priority user random delay is long.Preferential assurance high-priority users resends up access request prior to low priority user.
Consult shown in Figure 1ly, it is as follows to realize that secondary is retransmitted the main flow process of up access request:
As, by existing 3GPP 44018 agreements, waiting for that 100ms does not receive the correct response of network side to up access request, think that then up access asks out collision.
Described interval fiducial time according to the rules the longest interval fiducial time and the level data of User Priority determine.
Random delay sheet unified time 0～20ms with present agreement regulation is an example, the in-group priority of group user is set at 8 priority (being not limited to 8), it is example that interval between each priority differs 20ms fiducial time, User Priority with divide fiducial time at interval and corresponding relation as shown in the table
| Priority | The interval fiducial time (ms of unit) that secondary inserts | |
| 000 | no priority applied | 140+(0～20) |
| 001 | priority level 6 | 120+(0～20) |
| 010 | priority level 5 | 100+(0～20) |
| 011 | priority level 4 | 80+(0～20) |
| 100 | priority level 3 | 60+(0～20) |
| 101 | priority level 2 | 40+(0～20) |
| 110 | priority level 1 | 20+(0～20) |
| 111 | priority level 0 | 0+(0～20) |
As seen from the table, be that Tb is 0ms interval fiducial time of limit priority priority level 0, the whenever low one-level of priority, and it increases 20ms at interval fiducial time.
More than table is for example, and user 1 priority is priority level 0 in the group, its at interval fiducial time be 0; User 2 priority is 2 grades of priority level, its at interval fiducial time be 40ms, user 3 priority is 6 grades of priority level, its at interval fiducial time be 120ms.
After user 1, user 2 and user 3 sent up access request appearance collision, it was 19ms that user 1 produces random time, and the random time that user 2 produces is 12ms, and the random time that user 3 produces is 1ms; Then user 1 should find to send the up access request of secondary after delay 19ms appears having collided in up access request, user 2 is finding could to send the up access request of secondary after delay 40ms+12ms=52ms appears having collided in up access request, and user 3 occurs having collided in the up access request of discovery and postpones could send the up access request of secondary behind the 120ms+1ms=121ms.And network can be received up access request of the user 1 earlier, the priority allocation channel resource is given user 1, after user 2 and user 3 receive that network is given the signaling of user's 1 Resources allocation, then stop to send up access solicited message, thereby guaranteed that high-priority users can preferentially obtain resource.
Though it is identical fiducial time for equal priority user interval, send at the same time up access request taken place the collision after, owing to retransmit the random interval time is that (Tb is interval fiducial time to Tb+S, the random time of S in the scope of duration at random of being scheduled to, producing, as the random time in 0～20ms scope), so in 20ms, can not send the up access request of secondary simultaneously, therefore secondary collision can not occur.
More than table is divided into example, as: the priority of user 4, user 5 and user 6 in the group is prioritylevel 4, and it is 80ms at interval fiducial time.After user 4, user 5 and user 6 sent up access request appearance collision, it was 2ms that user 4 produces random times, and the random time that user 5 produces is 15ms, and the random time that user 6 produces is 9ms; Then user 4 should find to send the up access request of secondary after delay 82ms appears having collided in up access request, user 5 is finding could to send the up access request of secondary after delay 95ms appears having collided in up access request, and user 6 occurs having collided in the up access request of discovery and postpones could send the up access request of secondary behind the 89ms.And network can be received up access request of the user 4 earlier, the priority allocation channel resource is given user 4, after user 5 and user 6 receive that network is given the signaling of user's 4 Resources allocation, then stop to send up access solicited message, thereby guaranteed that the equal priority user secondary collision can not occur.
The User Priority corresponding intervals can be used as the parameter configuration of terminal equipment fiducial time on terminal equipment.
A kind of preferable mode is that the information in the above-mentioned tabulation (or similar form) is kept on the terminal equipment, and terminal equipment is inquired about this tabulation to obtain corresponding intervals fiducial time according to User Priority; Need not make amendment to its fiducial time when user's priority changes, this mode is more flexible.
Accordingly, present embodiment provides terminal equipment as shown in Figure 2, and this terminal equipment comprises: transmitting element, memory cell and blanking time generation unit.Wherein:
Transmitting element is used to send up access request at least.
Memory cell is used for preserving and User Priority corresponding intervals fiducial time.
Blanking time generation unit, has in logic annexation with described transmitting element and memory cell, be used for after collision appears in the up access request that described transmitting element sends, generation is used to control the repeating transmission random interval time that described transmitting element resends up access request.Produce this repeating transmission random interval during the time, blanking time, generation unit obtained corresponding intervals fiducial time according to User Priority from described memory cell, and produced a random time in the scheduled duration scope; Then with described interval fiducial time and random time sum as retransmitting the random interval time, and the repeating transmission random interval time of high-priority users is less than the repeating transmission random interval time of low priority user.
Though more than with the random delay sheet unified time 0～20ms of present agreement regulation, the in-group priority of group user is set at 8 priority (being not limited to 8), it is that example describes that interval between each priority differs 20ms fiducial time, but be not limited to this, can be 0～30ms as random delay sheet unified time, priority also can be not limited to 8, and difference also can be inequality (but should guarantee the maximum time of its difference greater than the random delay time sheet generally speaking the interval fiducial time between each priority, as above-mentioned 20ms), can determine according to the actual conditions of networking.
From foregoing description as can be known, should receive the maximum latency of network response with the 100ms that stipulates in present 3GPP 44018 agreements as terminal equipment acquiescence after sending up access request, still adopt the stand-by period of other durations, do not influence realization of the present invention and beneficial effect.
Said method can be applied in the processing of similar above-mentioned priority service of other communication systems equally, and its processing procedure in like manner repeats no more.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. a up-link access method is characterized in that, comprises the steps:
After terminal equipment is initiated up access request, if the response of in the default time interval, not receiving network side, then obtain User Priority corresponding intervals fiducial time, and in the predetermined scope of duration at random, produce a random time, as retransmitting the random interval time, and the repeating transmission random interval time of high-priority users is less than the repeating transmission random interval time of low priority user with described interval fiducial time and random time sum; And
Terminal equipment is postponing to resend up access request after the described repeating transmission random interval time.
2. the method for claim 1 is characterized in that, described interval fiducial time according to the rules the longest interval fiducial time and the grade quantity of User Priority determine.
3. the method for claim 1 is characterized in that, is kept in the terminal equipment in advance with User Priority and the corresponding relation formation tabulation of fiducial time at interval, and with this tabulation.
4. the method for claim 1 is characterized in that, in advance with User Priority corresponding intervals fiducial time as parameter configuration in terminal equipment.
5. as each described method of claim 1 to 4, it is characterized in that described user is the user in the group system.
6. method as claimed in claim 5 is characterized in that, described group system is the GT800 group system.
7. method as claimed in claim 5 is characterized in that, described User Priority is the priority of user in the group.
8. a terminal equipment is characterized in that, comprising:
Transmitting element is used to send up access request;
Memory cell is used for preserving and User Priority corresponding intervals fiducial time;
Blanking time generation unit, be used for after described transmitting element sends up access request, if the response of in the default time interval, not receiving network side, then from described memory cell, obtain User Priority corresponding intervals fiducial time, and in the predetermined scope of duration at random, produce a random time, with described interval fiducial time and random time sum, control the repeating transmission random interval time that described transmitting element resends up access request as being used to, and the repeating transmission random interval time of high-priority users is less than the repeating transmission random interval time of low priority user.
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| CNB2005101166823A CN100417249C (en) | 2005-10-27 | 2005-10-27 | Upward auess-in method and apparatus |
| PCT/CN2006/002792 WO2007048328A1 (en) | 2005-10-27 | 2006-10-20 | Method and equipment of uplink access |
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| CNB2005101166823A CN100417249C (en) | 2005-10-27 | 2005-10-27 | Upward auess-in method and apparatus |
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| CN100417249C true CN100417249C (en) | 2008-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520879A (en) * | 2011-11-30 | 2012-06-27 | 广东威创视讯科技股份有限公司 | Priority-based file information storage method, device and system |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101785356B (en) | 2007-06-20 | 2014-06-11 | 诺基亚西门子通信公司 | Avoiding collisions between semi-persistent allocation and dynamic allocation in radio access networks |
| CN101854588B (en) | 2009-04-01 | 2013-11-06 | 中兴通讯股份有限公司 | Data retransmission method and device in enhanced multimedia broadcast and multicast service |
| CN102223613A (en) * | 2010-04-16 | 2011-10-19 | 中兴通讯股份有限公司 | Method and system for controlling signaling or data transmission of machine type communication equipment |
| CN102316600B (en) * | 2010-06-29 | 2016-06-15 | 中兴通讯股份有限公司 | Method, system and the terminal that a kind of terminal is randomly accessing |
| CN102833872A (en) * | 2011-06-16 | 2012-12-19 | 中兴通讯股份有限公司 | Service access method and system and terminal |
| CN106303988B (en) * | 2015-05-13 | 2019-09-06 | 普天信息技术有限公司 | Priority management method under base station fault reduction state |
| CN105142118B (en) * | 2015-08-11 | 2019-02-19 | 电子科技大学 | The quick accidental access method of TD-LTE group system user |
| CN106453667B (en) * | 2016-12-20 | 2019-06-18 | 北京小米移动软件有限公司 | Update data cached method and device |
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| EP1005243A1 (en) * | 1998-11-24 | 2000-05-31 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Access method for mobile telecommunication system |
| US20030123426A1 (en) * | 2001-12-31 | 2003-07-03 | Bysted Tommy Kristensen | Uplink access control |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1035745A1 (en) * | 1999-03-10 | 2000-09-13 | Sony International (Europe) GmbH | Random access burst transmission scheme |
| CN1505336A (en) * | 2002-12-03 | 2004-06-16 | 华为技术有限公司 | A control method for random access |
| WO2004088878A1 (en) * | 2003-03-31 | 2004-10-14 | Matsushita Electric Industrial Co., Ltd. | Radio communication method and radio communication device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102520879A (en) * | 2011-11-30 | 2012-06-27 | 广东威创视讯科技股份有限公司 | Priority-based file information storage method, device and system |
| CN102520879B (en) * | 2011-11-30 | 2015-07-08 | 广东威创视讯科技股份有限公司 | Priority-based file information storage method, device and system |
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| CN1852495A (en) | 2006-10-25 |
| WO2007048328A1 (en) | 2007-05-03 |
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