CN1897723A - Method for requesting uplink call in packet system - Google Patents
Method for requesting uplink call in packet system Download PDFInfo
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- CN1897723A CN1897723A CN 200510084086 CN200510084086A CN1897723A CN 1897723 A CN1897723 A CN 1897723A CN 200510084086 CN200510084086 CN 200510084086 CN 200510084086 A CN200510084086 A CN 200510084086A CN 1897723 A CN1897723 A CN 1897723A
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Abstract
The method comprises: a) each cell decides if its uplink group calling channel is in idle; if yes, then setting a notice message to indicate the uplink group calling channel is available; otherwise, setting a notice message to indicate the uplink group calling channel is unavailable; b) each cell respectively sends the notice message to the user of trunk group in the cell; c) user receives the notice message from his currently-located cell, when the notice message indicates the uplink group calling channel is available, user initiates an uplink group calling request by using the uplink group calling channel; otherwise, user initiates an uplink group calling request by using the random access channel (RACH).
Description
Technical field
The present invention relates to the cluster wireless communication technical field, be meant the call-out method of a kind of group system uplink group cal request especially.
Background technology
Wireless trunking communication system, hereinafter to be referred as group system, be a kind of less expensive of growing up in recent years, command dispatching and communication system more flexibly, be widely used in units such as government bodies, energy traffic, airport harbour, industrial and mining enterprises, fire-fighting police, water conservancy and military affairs, in order to satisfy the needs of constituent parts intercommunication.
It is voice group call service (VGCS) that group system provides the most basic business.VGCS allows the user to set up and belongs to a certain given service area and have the interior a plurality of users' of a cluster group of identical group id (ID) calling, and described service area is made up of the sub-district that several belong to same mobile services switching centre (MSC) or different MS C.VGCS adopts semiduplex mode, and the user during the calling in the cluster group can become speaker, but any one constantly only allow a speaker, and other user is a listener in this cluster group.
Fig. 1 carries out the schematic diagram of group-calling process for prior art: when setting up group calling, each sub-district is distributed a pair of up-downgoing group-calling channel respectively for this cluster group, a user in this cluster group talks by the group emission mode at the uplink group cal channel of sub-district, place as current speaker, and other users in this cluster group are subjected to pattern to listen to the speech of speaker at place cell downlink group-calling channel by winding as listener.The notification message that wherein disposes this group-calling channel is at down channel, broadcasts with each user in the group of notifications as notification channel (NCH) and monitors.
The user of group system can belong to a plurality of different cluster groups, has different priority levels in different cluster groups.In a cluster group, obtain the service feature of following different stage in order to make different user, be provided with different priority levels for different users:
1, the parameter difference that other user of different priorities is provided with in random access procedure in the cluster group, as: the different retransmission intervals with setting of the repeating transmission number of times of setting are different or the like, and then cause inserting the success rate difference;
When 2, other user of different priorities initiated the access of uplink group cal channel simultaneously in the cluster group, group system was judged according to its priority level, is preferably other user of high priority and distributes the uplink group cal channel;
When 3, the other user of low priority talked by the uplink group cal channel in the cluster group, the other user of high priority can interrupt the other user's of low priority speech, obtained the uplink group cal channel and talked.
In order to realize above-mentioned the 3rd, promptly the multipriority of introducing the user not after, the other user of high priority can be in the other user's speech of low priority be carried out, send the uplink group cal request, interrupt the other user's of low priority speech and make the other user of high priority become speaker, just existing currently has speaker just in uplink group cal channel speech, and how listener initiates the problem of uplink group cal request.Present implementation method mainly contains two kinds.
First kind of implementation method is called 1.5 channel implementation methods of group system.Speaker takies dedicated uplink channels, and listener is initiated the uplink group cal request by the uplink group cal channel that distributes when the group calling of cluster group is set up.After the uplink group cal request that the listener of asking when making a call is initiated by the uplink group cal channel is responded by the group system network side, the group system network side discharges the dedicated uplink channels that current speaker takies, the listener that is this request of making a call is distributed dedicated uplink channels, and this listener changes current speaker into and takies the dedicated uplink channels of being distributed and talk.
Wherein, the step of distributing dedicated uplink channels to talk for the listener of the request of making a call can be divided into two kinds of situations again: first kind, the group system network side changes this listener into current speaker earlier and assigns to the uplink group cal channel and talk, and has distributed for the user by the time again this user to be assigned to the dedicated uplink channels of being distributed again after the dedicated uplink channels and talk; Second kind, the group system network side discharges the dedicated uplink channels that former speaker takies, and after the listener of asking for making a call has been distributed dedicated uplink channels, directly this user is assigned to dedicated uplink channels and talks.After this CU dedicated uplink channels was talked, the uplink group cal channel in the cluster group transferred the free time to, and other users in this cluster group can send the uplink group cal request by the uplink group cal channel.
Second kind of implementation method is called 1.0 channel implementation methods of group system.Speaker takies the uplink group cal channel that is distributed when the group calling of cluster group is set up and talks, and listener is initiated the uplink group cal request by the Random Access Channel in the cluster group (RACH).But when the uplink group cal channel idle of cluster group, the user in the cluster group can also initiate the uplink group cal request by the uplink group cal channel.Here initiate the uplink group cal request by the uplink group cal channel and comprise two kinds of situations: no speaker in first kind of situation, current cluster group, uplink group cal channel idle; Second kind of situation has speaker in the current cluster group, and speaker takies the uplink group cal channel of its affiliated subdistrict, and the uplink group cal channel initiation uplink group cal request that the listener in other sub-districts is distributed by sub-district separately in the cluster group.
In actual applications, the group system network side can be supported this two kinds of implementation methods simultaneously, promptly supports two kinds of implementation methods of 1.5 channels and 1.0 channels simultaneously.When the user when the group system network side sends the uplink group cal request, can take any one method in these two kinds of implementation methods to send.
But the uplink group cal channel that distributes when all using group calling to set up owing to the implementation method of present 1.5 channels sends the uplink group cal request, thereby makes the user when supporting that these two kinds of implementation methods send uplink group cal requests simultaneously, following problems occurred.
Problem one: the user can't learn that current cluster grid side adopts the sort of implementation, thereby does not know by the uplink group cal channel still to be to send the uplink group cal request by the RACH channel sometimes;
Problem two: if the group system network side adopts the implementation method of 1.5 channels, but adopt earlier and distribute the uplink group cal channel to speaker, when redistributing the processing procedure that dedicated uplink channels talks again, listener can't be by initiating the uplink group cal request at the current uplink group cal channel that takies of speaker.
Summary of the invention
In view of this, main purpose of the present invention has been to provide the call-out method of a kind of group system uplink group cal request, to realize that the employed channel of network side indication user sends call request, and realize that the group system network side adopts the elder generation in the 1.5 channel implementation methods to distribute the uplink group cal channel to speaker, when redistributing the processing procedure that dedicated uplink channels talks again, listener can be initiated the uplink group cal request by the RACH channel.
The call-out method of group system uplink group cal of the present invention request, each sub-district is respectively this cluster group and distributes the up-downgoing group-calling channel respectively under the group system, and is further comprising the steps of:
A, described each sub-district judge that respectively its uplink group cal channel is whether idle, if, a notification message then is set represents that the uplink group cal channel can use, to be expressed as the uplink group cal channel unavailable otherwise this notification message is set;
B, described each sub-district respectively will be separately notification message send to cluster group user in the sub-district;
C, cluster group user receive the described notification message of sub-district, current place, but are expressed as the uplink group cal channel time spent when being judged as notification message, adopt the uplink group cal channel to initiate the uplink group cal request; Otherwise adopt Random Access Channel RACH to initiate the uplink group cal request.
Wherein, the described uplink group cal channel that is judged as of steps A is one of following for not idle situation comprises:
When adopting 1.5 channels, for the listener of initiating the uplink group cal request is distributed in the process that dedicated uplink channels talks, when this user was assigned to that the uplink group cal channel is talked and this user is not assigned to the dedicated uplink channels of being distributed again talks, the uplink group cal channel of this sub-district, user place was not for idle;
When adopting 1.0 channels, the uplink group cal channel of the sub-district, speaker place in the cluster group is not for idle.
Optionally, described steps A is regularly to carry out.
Preferable, when described cell uplink group-calling channel operating position changes, the sub-district execution in step A that uplink group cal channel operating position changes.
Wherein, described cell uplink group-calling channel operating position change comprise one of following:
When switching to another sub-district as the cluster group user of current speaker;
When using the uplink group cal channel to switch to use dedicated channel to talk as the cluster group user of current speaker;
Start and when ringing off as the cluster group user of current speaker.
Optionally, the described notification message that is provided with of steps A represents whether the uplink group cal channel is available, is to represent by the different value that a specific fields in the downlink broadcast information is set; Step C is described to judge whether notification message is expressed as the uplink group cal channel and can uses, and is to determine according to the different value of described specific fields.
Optionally, the described notification message that is provided with of steps A represents whether the uplink group cal channel is available, whether comprises a specific fields in the downlink broadcast information and represents by being provided with; Step C is described to judge whether notification message is expressed as the uplink group cal channel and can uses, and according to whether comprising described specific fields in the downlink broadcast message determines.
Optionally, described specific fields is original untapped spare fields in field newly-increased in the downlink broadcast message or certain message.
Optionally, the cluster group user that initiate the uplink group cal request does not receive described notification message at certain hour, uses the RACH channel to initiate the uplink group cal request.
By said method as can be seen, which kind of channel implementation method is method provided by the invention be regardless of the current use of group system network side, can unify to send Indication message by down channel and indicate the user in the cluster group to use definite channel to send the uplink group cal request.Thereby the user can select the access way of employing according to the indication of system, and when not receiving the message of uplink group cal channel idle by down channel, adopts the RACH channel to send the uplink group cal request.
On the other hand, when 1.5 channel methods, speaker takies the uplink group cal channel when talking, and it is unavailable also to send Indication message indication uplink group cal channel by down channel, and the user who receives in the cluster group of this Indication message sends the uplink group cal request by RACH.Having solved at the group system network side adopts the elder generation in the 1.5 channel implementation methods to distribute the uplink group cal channel to speaker, when redistributing the processing procedure that dedicated uplink channels talks again, listener can't be by initiating the problem of uplink group cal request at the current uplink group cal channel that takies of speaker.
Description of drawings
Fig. 1 is the wireless trunking communication system structure chart.
Fig. 2 realizes the flow chart of group system up call for the present invention.
Embodiment
Two kinds of methods that further analysis background technology is mentioned, when the group system network side is supported 1.5 channel implementation methods and 1.0 channel implementation methods simultaneously, no matter the current use of group system network side is 1.5 channel implementation methods or 1.0 channel implementation methods, the up channel that the user in the cluster group sends the uplink group cal request can only be the uplink group cal channel that distributes when setting up of group calling or the RACH in the cluster group.Therefore, the present invention is directed to the unified down channel transmission Indication message that uses of 1.5 channels and 1.0 channels indicates the user in the cluster group to use which kind of up channel to send the uplink group cal request, after user in the cluster group receives Indication message by down channel, select to send the up channel of uplink group cal request according to Indication message.
The content of Indication message of the present invention is determined according to the situation that takies of cell uplink group-calling channel respectively by each sub-district and is broadcasted.Referring to Fig. 2, step of the present invention is elaborated, may further comprise the steps:
Step 201: cell base station judges that current area uplink group cal channel is whether idle, if, a notification message notification list then is set is shown group-calling channel and can uses, be that group-calling channel is unavailable otherwise this notification message is set.
Wherein, cell base station is judged when whether current area uplink group cal channel is idle, only the uplink group cal channel in the own sub-district is judged, is the free time as long as the uplink group cal channel is unoccupied.For example, for adopting 1.5 channels, in the process that the listener distribution dedicated uplink channels of asking for making a call is talked, the group system network side assigns to the uplink group cal channel with this user and talks, and this user is not assigned to again in the stage that the dedicated uplink channels of being distributed talks, think that the uplink group cal channel is occupied.During and for example for employing 1.0 channels, the uplink group cal channel of the sub-district at the speaker place in the cluster group is occupied.
Wherein, described notification message can adopt original untapped spare fields in a field newly-increased in the downlink broadcast message or certain message, can adopt the field of 1 bit byte for the byte that reduces to take.Can use the different value of this field to represent whether the uplink group cal channel is available, perhaps represent by in downlink broadcast message, whether containing this field whether the uplink group cal channel is available.
Step 202: cell base station sends to each user in the group by down channel with notification message.According to step 201, this notification message can send separately, perhaps places certain downlink broadcast message to send.
Step 203: the user receives the described notification message of sub-district, current place in the group, but is shown the group-calling channel time spent when being judged as this message table, adopts group-calling channel to initiate the uplink group cal request; Otherwise adopt the RACH channel to initiate the uplink group cal request.
Corresponding to step 201, can determine whether the uplink group cal channel is available according to the different value of this notification message field, perhaps by judging that the field whether contain this notification message in downlink broadcast message determines whether the uplink group cal channel is available.
In fact, the RACH channel is operable all the time, and that the uplink group cal channel has only is just available at one's leisure, because the uplink group cal channel is better than the RACH channel on delay character, so, in step 203, but judge the uplink group cal channel time spent, preferentially use the uplink group cal channel.
Wherein, step 201 can be regularly to carry out, and when the cell channel operating position changes, carry out, when for example current speaker switches to another sub-district, two sub-districts that switch at once separately the channel operating position of sub-district upgrade and to be handed down to separately user in the sub-district; And for example, when certain user used the uplink group cal channel to switch to use dedicated channel to talk, the sub-district should be broadcasted current group-calling channel operating position equally by notification message; The and for example startup of spoken user speech and stop to cause situations such as the cell channel operating position changes.Certainly, when certain listener in start or when switching to another sub-district, then need it to receive the information of sub-district, current place.
In addition, because the RACH channel is operable all the time, when the whether available situation of uplink group cal channel occurring can not determine, then select to use RACH, in order to avoid cause interference.For example, when terminal does not receive notification message about the group-calling channel operating position at certain hour, then use RACH to initiate the uplink group cal request.
By the present invention program, when having solved group system and supporting two kinds of methods simultaneously, which kind of channel the user can not accurately determine to use initiate the problem of group calling request.Also having solved at the group system network side adopts the elder generation in the 1.5 channel implementation methods to distribute the uplink group cal channel to speaker, when redistributing the processing procedure that dedicated uplink channels talks again, listener can't be by initiating the problem of uplink group cal request at the current uplink group cal channel that takies of speaker.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, the call-out method of a kind of group system uplink group cal request, each sub-district is respectively the cluster group and distributes the up-downgoing group-calling channel respectively under the group system, it is characterized in that, may further comprise the steps:
A, described each sub-district judge that respectively its uplink group cal channel is whether idle, if, a notification message then is set represents that the uplink group cal channel can use, to be expressed as the uplink group cal channel unavailable otherwise this notification message is set;
B, described each sub-district respectively will be separately notification message send to cluster group user in the sub-district;
C, cluster group user receive the described notification message of sub-district, current place, but when judging that notification message is expressed as the uplink group cal channel time spent, adopt the uplink group cal channel to initiate the uplink group cal request; Otherwise adopt Random Access Channel RACH to initiate the uplink group cal request.
2, method according to claim 1 is characterized in that, steps A is described, and to be judged as the uplink group cal channel one of following for not idle situation comprises:
When adopting 1.5 channels, for the listener user who initiates the uplink group cal request distributes in the process that dedicated uplink channels talks, when this user was assigned to that the uplink group cal channel is talked and this user is not assigned to the dedicated uplink channels of being distributed again talks, the uplink group cal channel of this sub-district, user place was not for idle;
When adopting 1.0 channels, the uplink group cal channel of the sub-district, speaker user place of cluster group is not for idle.
3, method according to claim 1 is characterized in that, described steps A is regularly to carry out.
4, method according to claim 1 is characterized in that, when described cell uplink group-calling channel operating position changes, and the sub-district execution in step A that uplink group cal channel operating position changes.
5, method according to claim 4 is characterized in that, described cell uplink group-calling channel operating position change comprise one of following:
When switching to another sub-district as the cluster group user of current speaker;
When using the uplink group cal channel to switch to use dedicated channel to talk as the cluster group user of current speaker;
Start and when ringing off as the cluster group user of current speaker.
6, method according to claim 1 is characterized in that, the described notification message that is provided with of steps A represents whether the uplink group cal channel is available, is to represent by the different value that a specific fields in the downlink broadcast information is set;
Step C is described to judge whether notification message is expressed as the uplink group cal channel and can uses, and is to determine according to the different value of described specific fields.
7, method according to claim 1 is characterized in that, the described notification message that is provided with of steps A represents whether the uplink group cal channel is available, whether comprises a specific fields in the downlink broadcast information and represents by being provided with;
Step C is described to judge whether notification message is expressed as the uplink group cal channel and can uses, and according to whether comprising described specific fields in the downlink broadcast message determines.
According to claim 6 or 7 described methods, it is characterized in that 8, described specific fields is original untapped spare fields in field newly-increased in the downlink broadcast message or certain message.
9, method according to claim 1 is characterized in that, further comprises: the cluster group user that initiate the uplink group cal request does not receive described notification message at certain hour, uses the RACH channel to initiate the uplink group cal request.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100840861A CN100417248C (en) | 2005-07-12 | 2005-07-12 | Method for requesting uplink call in packet system |
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| CNB2005100840861A CN100417248C (en) | 2005-07-12 | 2005-07-12 | Method for requesting uplink call in packet system |
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| CN1897723A true CN1897723A (en) | 2007-01-17 |
| CN100417248C CN100417248C (en) | 2008-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019029527A1 (en) * | 2017-08-11 | 2019-02-14 | 维沃移动通信有限公司 | Random access resource processing method and device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020172165A1 (en) * | 2001-05-15 | 2002-11-21 | Eric Rosen | Communication device for reducing latency in a mobile-originated group communication request |
| US6963543B2 (en) * | 2001-06-29 | 2005-11-08 | Qualcomm Incorporated | Method and system for group call service |
| CN100344182C (en) * | 2003-09-19 | 2007-10-17 | 华为技术有限公司 | Method for group calling by user of group radio communication system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019029527A1 (en) * | 2017-08-11 | 2019-02-14 | 维沃移动通信有限公司 | Random access resource processing method and device |
| US11825513B2 (en) | 2017-08-11 | 2023-11-21 | Vivo Mobile Communication Co., Ltd. | Random access resource processing method and device |
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| CN100417248C (en) | 2008-09-03 |
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Application publication date: 20070117 Assignee: Apple Computer, Inc. Assignor: Huawei Technologies Co., Ltd. Contract record no.: 2015990000755 Denomination of invention: Method for requesting uplink call in packet system Granted publication date: 20080903 License type: Common License Record date: 20150827 |
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