CN1315352C - Method for improving speaking quality of centreless multi-channel dress selection mobile communication system - Google Patents
Method for improving speaking quality of centreless multi-channel dress selection mobile communication system Download PDFInfo
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- CN1315352C CN1315352C CNB200510020947XA CN200510020947A CN1315352C CN 1315352 C CN1315352 C CN 1315352C CN B200510020947X A CNB200510020947X A CN B200510020947XA CN 200510020947 A CN200510020947 A CN 200510020947A CN 1315352 C CN1315352 C CN 1315352C
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Abstract
The present invention discloses a method for improving speaking quality of centreless multi-channel address selection mobile communication systems, which orderly has the following steps: inter-call signaling data list storage, inter-call signaling data list processing, channel search ranked list modification and idle channel search and selection by adopting a random number pointer method. The present invention is used for the following working states on a calling station: after starting up, making a call after conversation limit time, making a call within the conversation limit time, or making a call immediately after starting up again within the conversation limit time, making a call immediately after starting up again after the conversation limit time and the calling station makes set calls, wherein some steps are different. The last step of the fourth working state checks whether calling numbers and called numbers in an inter-call signaling data list are user numbers in the same set belonging to the calling station or not. The present invention can obviously improve speaking quality and mutual speaking crosstalk between speaking users, shorten calling set-up time and improve the calling rate of the whole set of users.
Description
Technical field
The present invention relates to choice device that the two-way wireless communication link by mobile radio system connects the user and utilize stored program control to the system that the user provides special service, especially relate to the method that a kind of hubless system improves speech quality.
Background technology
The hubless system that meets standard GB 15160 " hubless system system " regulation, there is not the central controlled switching control center of realization, by each travelling carriage or the fixed station decentralized control of setting wireless communication link respectively.This mobile communication system adopts the multichannel common mode, and communications band is set to S shared channel f with certain frequency
1... f
S-1, f
S, wherein first channel f
1Be control channel, all the other S-1 channel f
2... f
S-1, f
SBe talk channel, channel number D should be 1,2 mutually ... S-1, S use no third order intermodulation group method search to select talk channel, and S shared channel is divided into a plurality of no third order intermodulation groups, are arranged at least 1 part of channel search sequencing table.Each mobile station is all waited at control channel after all user radio station starts in advance and do not know to have which channel occupied.The calling subscriber presses the PTT key after keying in called subscriber's user code, the caller radio station is automatic searching idle channel in talk channel just, when jumping to a certain channel, the carrier level that receives is higher than the threshold level of setting, the state of threshold level that perhaps is lower than setting is within the duration of setting, judge that promptly this channel is occupied, just can jump to another channel and continue searching idle channel; When jumping to a certain channel, the carrier level that receives is lower than the threshold level of setting in the duration of setting, and judges that promptly this channel is an idle channel.This idle channel number is noted in the caller radio station, returns control channel and sends the selective call signaling that comprises called subscriber's address code and this idle channel number; Called radio station is after receiving the selective call signaling that comprises self user code on the control channel, just the channel with called radio station is adjusted on the idle channel of caller radio station selective call signaling appointment automatically; And the caller radio station also turns back on the idle channel that is searched from control channel, realizes two-way call; Caller behind the end of conversation, called radio station discharge talk channel, all wait at control channel again.If the caller radio station is in and resets, under the stand-by state at average call duration T
mWithin carry out recall, the caller radio station is searching idle channel again, presses the PTT key and can set up on used just now channel with used just now number and communicate by letter.
In said process, the caller radio station seek with the standard of judging idle channel only be whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, this will have influence on communication quality.The first produces and crosstalks mutually, and in the process of caller broadcasting station search idle channel, other radio station is in the searching idle channel process simultaneously; Even sent the selective call signaling to called radio station, be the not response as yet of called radio station; Perhaps other radio station to or group be in the caller broadcasting station search to the conversation gap of idle channel in, promptly communicating pair is not all pressed the PTT key, the carrier level that receives in this channel also is the threshold level that is lower than setting in the duration of setting; In addition, other radio station to or the group the caller broadcasting station search to idle channel converse, but distance is far away, the carrier level that receives in this channel also is the threshold level that is lower than setting in the duration of setting, and when realizing two-way call, other radio station of just on this channel, conversing to or group, actual near or moved near caller radio station or called radio station; The caller radio station all can be idle channel with occupied talk channel erroneous judgement in these cases, makes two groups of radio station take same talk channel conversation, crosstalks mutually thereby produce; It two is to have increased call set-up time because the duration that will experience setting when judging idle channel is sought in the caller radio station, particularly when channel utilization when higher, it is long to search for the used time of idle channel; It three is the full group of influence user call completion ratios, when on the same group some member just when talk channel communicates, will can not receive the group calling signaling of on control channel, sending, thereby mainly exhale the radio station not exhale logical organizing the user entirely.In addition, four groups of operating states at the caller radio station: starting shooting again after the conversation binding hours after start makes a call immediately, shuts down again within the binding hours of conversing after making a call or shut down within the conversation binding hours after making a call, start shooting after the conversation binding hours after starting shooting makes a call and the initiation group calling of caller radio station immediately, improves the individual steps of speech quality method and should distinguish to some extent.
Summary of the invention
Technical problem to be solved by this invention is the defective that remedies prior art, provides a kind of hubless system to improve the method for speech quality.This method is used for the following four groups of operating states in caller radio station: starting shooting again after the conversation binding hours after start makes a call immediately, shuts down again within the binding hours of conversing after making a call or shut down within the conversation binding hours after making a call, start shooting after the conversation binding hours after starting shooting makes a call and the initiation group calling of caller radio station immediately, and individual steps is distinguished to some extent.
Technical problem of the present invention is solved like this:
This hubless system improves the method for speech quality, and communications band is set to S shared channel, and is divided into a plurality of no third order intermodulation groups, lines up at least 1 part of channel search sequencing table.
The characteristics that this hubless system improves the method for speech quality are that following steps are arranged successively:
Step 1 is a storage selective call signaling data table: receive selective call signaling t constantly according to the caller radio station
CJPrecedence, the selective call signaling that selective call signaling of having stored when started shooting in N bar caller radio station and start back receive when control channel is waited for all is recorded in the selective call signaling data table, described selective call signaling data table comprises that calling number, called number, talk channel D, the identification code of taking out stitches, conversation binding hours TXZ, caller radio station receive selective call signaling tCJ and the field intensity that is directly proportional with carrier level that detection receives constantly in this channel, write down selective call signaling N at most
MAXBar, the N of wide band system
MAXBe that minimum is 1, is 79 natural number, the N of arrowband mode or interlace mode to the maximum
MAXBe that minimum is 1, is 157 natural number to the maximum;
Step 2 is to handle selective call signaling data table: selective call signaling data table is carried out data processing, delete all and satisfy inequality t
DQ〉=t
CJ+ T
XZThe selective call signaling that requires, t in the formula
DQBe the current time, t
CJBe the moment of caller radio station reception selective call signaling, T
XZBe the conversation binding hours of setting;
Step 3 is to revise the channel search sequencing table: equal to be lower than and to be higher than two kinds of situations of the channel utilization rate that hubless system sets according to channel utilization, the channel search sequencing table is made amendment:
When (1) equaling to be lower than the channel utilization rate of setting, selective call signaling of the every record in caller radio station just corresponding channel number in this signaling is deleted from all channel search sequencing tables, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires, just corresponding channel number in this signaling is added on original position in all channel search sequencing tables again, form amended channel search sequencing table, number of channel Z=S-N wherein, S is the shared channel number of hubless system;
When (2) being higher than the channel utilization rate of setting, selective call signaling of the every record in caller radio station just corresponding channel number in this signaling is deleted from all channel search sequencing tables, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires just is added on original position in all channel search sequencing tables to corresponding channel number in this signaling again, chooses the user simultaneously and receive selective call signaling t constantly from selective call signaling data table
CJSelective call signaling bar is the earliest counted L=M-(S-N), corresponding channel number in these signalings is added on original position in all channel search sequencing tables again, form amended channel search sequencing table, number of channel Z=(S-N)+L=M wherein, be that number of channel Z is M, M is the positive integer between 20～S/2;
Step 4 is to adopt the search of random number pointer method to select idle channel: have at least following three kinds of methods (1), (2), (3) to produce pointer value at random, the channel number that points in amended channel search sequencing table is exactly the starting point of the idle channel selected of caller radio station number or caller broadcasting station search idle channel:
(1) directly extracts the numerical value of 8 or 16 digit counters, get its remainder behind the mould Z as pointer value;
(2) 0～(Z-1) the random number that directly produces with the function that produces random number in certain language is as pointer value;
(3) extract the numerical value of 8 or 16 digit counters or the random number that directly produces with the function of generation random number in certain language as random number seed I, pointer value=(the mod Z of I * X+Y), wherein X, Y must have at least one to be prime number, Z is the number of channel of amended channel search sequencing table, pointer value is 0 corresponding to the first channel number in the amended channel search sequencing table, and pointer value is that Z-1 is corresponding to the end channel number in the table.
Technical problem of the present invention make a call, start shooting after the conversation binding hours in start back, caller radio station the back make a call or shut down within the conversation binding hours back within the conversation binding hours again start make a call immediately, shut down the back after the conversation binding hours again start make a call immediately and four groups of operating states of group calling are initiated in the caller radio station, described step 4 adopts random number pointer method to search for the selection idle channel and can solve according to qualifications like this:
Adopting random number pointer method search selection idle channel under the described state that makes a call after the conversation binding hours after starting shooting in the caller radio station, is to take two kinds of different steps according to two kinds of situations that channel utilization equals to be lower than with the channel utilization rate that is higher than the hubless system setting:
(1) equals to be lower than the channel utilization rate of setting
1) if the caller calling-up is not recorded in calling number, the called number in the selective call signaling data table in this radio station,
The caller radio station adopts random number pointer method directly to choose idle channel from the channel search sequencing table, needn't search for the selection idle channel;
Can shorten call set-up time, in this case, all channels in the amended channel search sequencing table all are idle;
2) if the caller calling-up is recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mWithin,
The caller radio station directly shows busy, needn't search for the selection idle channel;
Can shorten call set-up time, reduce the workload in radio station and the collision probability on control channel thereof, in this case, called radio station also continuing conversation, can not exhale logical probability very big mostly;
3) if the caller calling-up is recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mAfterwards,
The caller radio station adopts random number pointer method directly to choose idle channel from the channel search sequencing table, send the selective call signaling that comprises called subscriber's address code and this idle channel number, start a timer simultaneously, if before timer overflows, receive the signaling of replying in called radio station, illustrate that called radio station finished last time conversation, if do not receive the signaling of replying in called radio station, illustrate that called radio station do not finish last time conversation as yet, can show busy;
In this case, conversation may be finished in called radio station, can be exhaled logical probability bigger, and all channels in the amended channel search sequencing table all are idle;
(2) be higher than the channel utilization rate of setting
1) if the caller calling-up is not recorded in calling number, the called number in the selective call signaling data table in this radio station,
The caller radio station is adopted random number pointer method to search for successively in the channel search sequencing table and is selected idle channel,
Search the idle channel in the selective call signaling data table that is not recorded in this radio station, just select this channel as talk channel;
Searching the idle channel in the selective call signaling data table that is recorded in this radio station, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Be not, just abandon this channel, continue the next idle channel of search, the carrier level that receives on searching the channel number that is not recorded in this radio station selective call signaling data table or channel is lower than the channel of the threshold level of setting in the duration of setting, just select it as talk channel;
2) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mWithin,
The caller radio station directly shows busy, needn't search for the selection idle channel;
Can shorten call set-up time, the workload that reduces the radio station and the collision probability on control channel thereof, in this case, called radio station also continuing conversation, can not exhale logical probability very big mostly;
3) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mAfterwards,
The caller radio station is adopted random number pointer method to search for successively in the channel search sequencing table and is selected idle channel,
Search the idle channel in the selective call signaling data table that is not recorded in this radio station, just select this channel as talk channel;
Searching the idle channel in the selective call signaling data table that is recorded in this radio station, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Be not, just abandon this channel, continue the next idle channel of search, the carrier level that receives on searching the channel number that is not recorded in this radio station selective call signaling data table or channel is lower than the channel of the threshold level of setting in the duration of setting, just select it as talk channel;
The selective call signaling that comprises this talk channel number is sent in the caller radio station, start a timer simultaneously, if before timer overflows, receive the signaling of replying in called radio station, illustrate that called radio station finished last time conversation, if do not receive the signaling of replying in called radio station, illustrate that called radio station do not finish last time conversation as yet, can show busy;
In this case, conversation may be finished in called radio station, can be exhaled logical probability bigger, and it is idle that the channel in the amended channel search sequencing table has part;
The operating state that makes a call after the conversation binding hours in start back, caller radio station is the most frequently used operating state of hubless system, and described selective call signaling data table record has from current time t under this operating state
DQTo (current time t
DQ-conversation binding hours T
XZ) all selective call signalings of receiving when inherent control channel is waited for, the radio station can make full use of these information, reaches the purpose that shortens call time.But, when being higher than the channel utilization rate of setting, in order to keep the quantity of available channel, having chosen the call time of the channel early of part in the selective call signaling data table adds in the channel search sequencing table, the probability of this part channel idle is big, but still have occupied possibility, if search this part channel, the method that the radio station must adopt the carrier level that receives on the detection channel whether to be lower than the threshold level of setting in the duration of setting determines that this channel is not used by other user, promptly whether can select this idle channel as talk channel, the generation of crosstalking with reduction.
Described conversation make a call or shut down within the binding hours back within the conversation binding hours again start make a call immediately and adopt the search of random number pointer method to select idle channel under the state, be that the channel utilization rate that channel utilization equals to be below or above setting all adopts following method:
(1) if the caller calling-up is not recorded in calling number, the called number in the selective call signaling data table in this radio station,
The caller radio station adopts the search of random number pointer method to select idle channel;
No matter search is the idle channel that or is not recorded in the selective call signaling data table in this radio station, all detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, be just to select this idle channel as talk channel; Not, just abandon this channel, continue the next idle channel of search,, just select it as talk channel until searching the channel that is lower than the threshold level of setting in the duration that the carrier level that receives setting;
(2) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mWithin,
The caller radio station directly shows busy, needn't searching idle channel;
Can shorten call time, reduce the workload in radio station and the collision probability on control channel thereof, in this case, called radio station also continuing conversation, can not exhale logical probability very big mostly;
(3) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mAfterwards,
The caller radio station adopts the search of random number pointer method to select idle channel;
No matter search is the idle channel that or is not recorded in the selective call signaling data table in this radio station, all detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, be just to select this idle channel as talk channel; Not, just abandon this channel, continue the next idle channel of search,, just select it as talk channel until searching the channel that is lower than the threshold level of setting in the duration that the carrier level that receives setting;
The selective call signaling that comprises this talk channel number is sent in the caller radio station, start a timer simultaneously, if before timer overflows, receive the signaling of replying in called radio station, illustrate that called radio station finished last time conversation, if do not receive the signaling of replying in called radio station, illustrate that called radio station do not finish last time conversation as yet, can show busy;
In this case, conversation may be finished in called radio station, can be exhaled logical probability bigger, and it is idle that the channel in the amended channel search sequencing table has part;
After starting shooting, the caller radio station making a call and shutting down the back within the conversation binding hours under the state that makes a call immediately of starting shooting again within the conversation binding hours, owing to can not receive any signaling that control channel sends during the shutdown of radio station, the data that write down in the described selective call signaling data table are not all selective call signalings that control channel sends within the conversation binding hours, therefore when the search selective channel, the method that the radio station must adopt the carrier level that receives on the detection channel whether to be lower than the threshold level of setting in the duration of setting determines that this channel is not used by other user, promptly whether can select this idle channel as talk channel, the generation of crosstalking with reduction.
Described after the conversation binding hours again start make a call immediately and adopt random number pointer method search selection idle channel under the state, be that the channel utilization rate that channel utilization always is lower than setting adopts following method:
Searching an idle channel at random, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Not, just abandon this channel, continue the next idle channel of search,, just select it as talk channel until searching the channel that is lower than the threshold level of setting in the duration that the carrier level that receives on the channel setting.
Again start shooting after binding hours is being conversed in shutdown back, caller radio station under the state that makes a call immediately, N=0 counted in the record in the described selective call signaling data table, and channel utilization always is lower than the channel utilization rate of setting.The radio station is not known in conversation has within the binding hours occupied and have which user to be in the conversation for which channel, the method that the radio station can only adopt the carrier level that receives on the detection channel whether to be lower than the threshold level of setting in the duration of setting determines that this channel is not used by other user, promptly whether can select this idle channel as talk channel, the generation of crosstalking with reduction.
The described initiation in the caller radio station adopts random number pointer method to search for the selection idle channel under the group calling state, be to take two kinds of different steps according to two kinds of situations that channel utilization equals to be lower than with the channel utilization rate that is higher than the hubless system setting:
(1) equals to be lower than the channel utilization rate of setting
The caller radio station adopts random number pointer method directly to choose at random, needn't search for the selection idle channel;
Can shorten call set-up time, in this case, all channels in the amended channel search sequencing table all are idle;
(2) be higher than the channel utilization rate of setting
The caller radio station adopts the search of random number pointer method to select idle channel,
Search the idle channel in the selective call signaling data table that is not recorded in this radio station, just select this channel as talk channel;
Searching the idle channel in the selective call signaling data table that is recorded in this radio station, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Be not, just abandon this channel, continue the next idle channel of search, the carrier level that receives on searching the channel number that is not recorded in this radio station selective call signaling data table or channel is lower than the channel of the threshold level of setting in the duration of setting, just select it as talk channel.
Initiate under the group calling state in the caller radio station, all selective call signalings that described selective call signaling data table record has the caller radio station to receive when control channel is waited in the conversation binding hours, the radio station can make full use of these information, reaches the purpose that improves full group user call completion ratio.But, when being higher than the channel utilization rate of setting, in order to keep the quantity of available channel, having chosen the call time of the channel early of part in the selective call signaling data table adds in the channel search sequencing table, the probability of this part channel idle is big, but still have occupied possibility, if search this part channel, whether the method that the radio station must adopt the carrier level that receives on the detection channel whether to be lower than the threshold level of setting in the duration of setting determines that this channel is not used by other user, promptly can select this idle channel as talk channel.
Described after the caller radio station initiates to adopt under the group calling state search of random number pointer method to select idle channel, 5 be to check that whether calling number in the selective call signaling data table, called number be the Subscriber Number on the same group under this caller radio station in steps also:
(1) calling number or called number are the Subscriber Numbers on the same group under this caller radio station, just according to the channel number of corresponding selective call signaling data table record and the identification code of taking out stitches, first one signaling of taking out stitches on the talk channel at this number place, make it return control channel, and then initiation group calling, just can exhale the Subscriber Number of colluding in the group, but participate in except the Subscriber Number of other caller radio station group calling;
(2) calling number, called number are Subscriber Numbers outer on the same group under this caller radio station, just directly initiate group calling.
The described step of initiating in the caller radio station under the group calling state 5, preferably the caller radio station form record comprise corresponding under the group calling user number code table of Member Users's number on the same group, whether the calling number, called number that is used for checking selective call signaling data table is the Subscriber Number on the same group under this caller radio station.
Technical problem of the present invention can further be solved like this:
The channel utilization rate of described shared channel S=80 respective settings is 75%.
When the channel utilization rate is lower than when equaling 75%, conversation binding hours T
XZBe 5 minutes, average call duration T
mIt is 2.5 minutes;
When the channel utilization rate is higher than 75%, conversation binding hours T
XZAutomatically change into 3 minutes, average call duration T
mIt is 1.5 minutes.
The idle channel incoming level of described search is lower than setting in the duration of setting threshold level is to continue to be lower than 1 microvolt in 1 second.
Method of the present invention is novel, and dependable performance makes full use of the data in whole selective call signalings that no center station receives, i.e. calling number, called number, channel number, conversation binding hours T when control channel is waited for
XZ, receipt of call time t
CJ, the identification code etc. of taking out stitches, carry out the selection of talk channel with the integrated use of no third order intermodulation group method, can obviously change the mandarin quality, significantly improve communicating with each other between the calling user and crosstalk, shorten call set-up time, improve full group user call completion ratio.Particularly, being used for start back, caller radio station makes a call can improve under the state after the conversation binding hours and crosstalks and shorten call set-up time; Be used for start back, caller radio station make a call and shut down within the conversation binding hours back within the conversation binding hours again start make a call immediately can improve under the state and crosstalk and shorten call set-up time; Be used for shutdown back, caller radio station after the conversation binding hours again start make a call immediately can improve to converse under the state and crosstalk; Being used for the caller radio station initiates can improve complete group of user's call completion ratio under the group calling state.
Embodiment
The invention will be further described below in conjunction with embodiment.
This hubless system improves the method for speech quality, the hubless system that is suitable for is with mobile radio system frequency range 915.0125MHz～916.9875MHz, is set to S=80 shared channel f with the frequency interval of 25kHz
1=915.0125MHz, f
2=915.0375MHz ... f
80=916.9875MHz.Wherein first channel f
1Be control channel, all the other 79 channel f
2... f
78, f
79, f
80It is talk channel, channel number D should be 1,2 mutually ... 78,79,80, utilization GB 15160 " hubless system system " recommends the preferential no third order intermodulation group method search of using to select talk channel, 80 shared channels are divided into 10 no third order intermodulation groups, are arranged into two parts of channel search sequencing table B
1, B
2Each mobile station in advance and do not know to have which channel occupied, all wait at control channel after all user radio station starts, the calling subscriber presses the PTT key after keying in called subscriber's user code, the caller radio station is automatic searching idle channel in talk channel just, and when jumping to a certain channel, the carrier level that receives is higher than the threshold level of setting in the duration of setting, judge that promptly this channel is occupied, just can jump to another channel and continue searching idle channel; When jumping to a certain channel, the carrier level that receives is lower than the threshold level of setting in the duration of setting, judge that promptly this channel is an idle channel, this idle channel number is noted in the caller radio station, return control channel and send the selective call signaling that comprises called subscriber's address code and this idle channel number, called radio station is after receiving the selective call signaling that comprises self user code on the control channel, just the channel with called radio station is adjusted on the idle channel of caller radio station selective call signaling appointment automatically, and the caller radio station also turns back on the idle channel that is searched from control channel, realize two-way call, caller behind the end of conversation, called radio station discharges talk channel, all waits at control channel again.
10 above-mentioned no third order intermodulation groups are:
1 group: 1,10,21,29,36,50,54,67,77;
2 groups: 2,11,22,30,37,51,55,68,78;
3 groups: 3,12,23,31,38,52,56,69,79;
4 groups: 4,13,24,32,39,53,57,70,80;
5 groups: 9,20,28,44,49,62,66,76;
6 groups: 8,19,27,43,48,61,65,75;
7 groups: 7,18,26,42,47,60,64,74;
8 groups: 6,17,25,41,46,59,63,73;
9 groups: 5,16,34,35,58,71;
10 groups: 14,15,33,40,45,72;
Wherein channel 1 is a control channel, and all the other channels are talk channel.
Above-mentioned channel search sequencing table B
1In channel be successively:
1→77→21→67→10→54→29→50→36→51→22→2→55→78→68→11→37→30→38→31→69→79→52→56→23→12→3→80→57→13→53→4→39→32→24→70→76→49→28→66→20→9→44→62→8→43→75→48→65→61→19→27→26→64→47→18→60→42→74→7→17→25→63→6→41→46→59→73→5→16→34→35→58→71→14→72→15→40→45→33；
Above-mentioned channel search sequencing table B
2In channel be successively:
1→10→21→29→36→50→54→67→77→2→11→22→30→37→51→55→68→78→3→12→23→31→38→52→56→69→79→4→13→24→32→39→53→57→70→80→9→20→28→44→49→62→66→76→8→19→27→43→48→61→65→75→7→18→26→42→47→60→64→74→6→17→25→41→46→59→63→73→5→16→34→35→58→71→14→15→33→40→45→72。
Related standards is set when the channel utilization rate is lower than 75%, conversation binding hours T
XZIt is 5 minutes; When the channel utilization rate is higher than 75%, conversation binding hours T
XZAutomatically change into 3 minutes.
Channel search sequencing table B is adopted in parity decision according to the pointer value that produces in the random number pointer method
1Or B
2, for example, when channel number is odd number, adopt channel search sequencing table B
1, when channel number is even number, adopt channel search sequencing table B
2
Below according to four groups of operating states in caller radio station: the start back makes a call after the conversation binding hours, in the back that makes a call or shut down within the conversation binding hours in that start makes a call immediately again within the conversation binding hours, start makes a call and the initiation group calling of caller radio station immediately again after the conversation binding hours, and the concrete grammar that improves speech quality is described respectively.
The method of the condition improvement speech quality that makes a call after the conversation binding hours after (one) start shooting in the caller radio station has following steps successively:
Step 1 is a storage selective call signaling data Table A: the selective call signaling that selective call signaling of having stored when started shooting in the caller radio station and start back receive when control channel is waited for all receives selective call signaling t constantly according to the caller radio station
CJPrecedence record the N bar and comprise calling number, called number, talk channel D, the identification code of taking out stitches, conversation binding hours T
XZ, the caller radio station receives selective call signaling t constantly
CJSelective call signaling data Table A with the field intensity that is directly proportional with carrier level that detection receives in this channel writes down N at most
MAXBar, the N of wide band system
MAXBe that minimum is 1, is 79 natural number, the N of arrowband mode or interlace mode to the maximum
MAXBe that minimum is 1, is 157 natural number to the maximum;
Above-mentioned selective call signaling data Table A is as follows:
| Calling number | Called radio station | D | The identification code of taking out stitches | T XZ | T CJ | Field intensity |
| 50076 | 50089 | 48 | 127 | 5 | 13:10:56 | -78 |
| 60006 | 50047 | 12 | 231 | 5 | 13:09:26 | -90 |
| 50014 | 50025 | 65 | 435 | 5 | 13:07:43 | -89 |
| 50025 | 50078 | 31 | 156 | 5 | 13:06:23 | -90 |
| 50024 | 50099 | 15 | 621 | 5 | 13:06:08 | -77 |
| 50045 | 20053 | 66 | 381 | 5 | 13:04:01 | -67 |
Step 2 is to handle selective call signaling data Table A: selective call signaling data Table A is carried out data processing, delete all and satisfy inequality t
DQ〉=t
CJ+ T
XZThe selective call signaling that requires, t in the formula
DQBe the current time, t
CJBe the moment of caller radio station reception selective call signaling, T
XZBe the conversation binding hours of setting; The up-to-date time t that receives signaling in the selective call signaling data Table A for example
DQBe 13:10:56, the data that write down before 13:05:56 are all deleted, and promptly the data of message registration are to exceed conversation binding hours T between 50045 and 20053
XZWrite down its T in=5 minutes
CJBe 13:04:01, satisfy inequality t
DQ〉=t
CJ+ T
XZ, just deleted.
Step 3 is to revise channel search sequencing table B
1, B
2: equal to be lower than and be higher than two kinds of situations of the channel utilization rate that hubless system sets according to channel utilization, to channel search sequencing table B
1, B
2Make amendment:
When (1) equaling to be lower than the channel utilization rate of setting, selective call signaling of the every record in caller radio station, just corresponding channel number in this signaling from all channel search sequencing table B
1, B
2Middle deletion, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires just is added on all channel search sequencing table B to corresponding channel number in this signaling again
1, B
2In original position, form amended channel search sequencing table B
1', B
2', number of channel Z=80-N wherein, the 80th, the shared channel number of hubless system;
When (2) being higher than the channel utilization rate of setting, selective call signaling of the every record in caller radio station, just corresponding channel number in this signaling from all channel search sequencing table B
1, B
2Middle deletion, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires just is added on all channel search sequencing table B to corresponding channel number in this signaling again
1, B
2In original position, from selective call signaling data Table A, choose the user simultaneously and receive selective call signaling t constantly
CJSelective call signaling bar is the earliest counted L=M-(80-N), and corresponding channel number in these signalings is added on all channel search sequencing table B again
1, B
2In original position, form amended channel search sequencing table B
1', B
2', number of channel Z=(80-N)+L=M wherein, promptly number of channel Z is M, M is the positive integer between 20～40;
Step 4 is to adopt the search of random number pointer method to select idle channel: equal to be lower than and to be higher than two kinds of situations of the channel utilization rate that hubless system sets according to channel utilization, take two kinds of different steps:
(1) equals to be lower than the channel utilization rate of setting
1) if the caller calling-up is not recorded in calling number, the called number in the selective call signaling data Table A in this radio station,
The caller radio station adopts random number pointer method from channel search sequencing table B
1', B
2' in directly choose idle channel, needn't search for the selection idle channel;
Can shorten call set-up time, in this case, amended channel search sequencing table B
1', B
2' in all channels all be idle;
2) if the caller calling-up is recorded in calling number, the called number in the selective call signaling data Table A in this radio station, and at average call duration T
mWithin,
The caller radio station directly shows busy, needn't search for the selection idle channel;
Can reduce the workload in radio station and the collision probability on control channel thereof, in this case, called radio station also continuing conversation, can not exhale logical probability very big mostly;
3) if the caller calling-up is recorded in calling number, the called number in the selective call signaling data Table A in this radio station, and at average call duration T
mAfterwards,
The caller radio station adopts random number pointer method from channel search sequencing table B
1', B
2' in directly choose idle channel, send the selective call signaling that comprises called subscriber's address code and this idle channel number, start a timer simultaneously, if before timer overflows, receive the signaling of replying in called radio station, illustrate that called radio station finished last time conversation, if do not receive the signaling of replying in called radio station, illustrate that called radio station do not finish last time conversation as yet, can show busy;
In this case, conversation may be finished in called radio station, can be exhaled logical probability bigger, amended channel search sequencing table B
1', B
2' in all channels all be idle;
(2) be higher than the channel utilization rate of setting
1) if the caller calling-up is not recorded in calling number, the called number in the selective call signaling data Table A in this radio station,
The caller radio station adopts random number pointer method at channel search sequencing table B
1', B
2' in successively search select idle channel,
Search the idle channel in the selective call signaling data Table A that is not recorded in this radio station, just select this channel as talk channel;
Searching the idle channel in the selective call signaling data Table A that is recorded in this radio station, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Be not, just abandon this channel, continue the next idle channel of search, the carrier level that receives on searching the channel number that is not recorded in this radio station selective call signaling data Table A or channel is lower than the channel of the threshold level of setting in the duration of setting, just select it as talk channel;
2) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data Table A in this radio station, and at average call duration T
mWithin,
The caller radio station directly shows busy, needn't search for the selection idle channel;
Can shorten call time, reduce the workload in radio station and the collision probability on control channel thereof, in this case, called radio station also continuing conversation, can not exhale logical probability very big mostly;
3) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data Table A in this radio station, and at average call duration T
mAfterwards,
The caller radio station adopts random number pointer method at channel search sequencing table B
1', B
2' in successively search select idle channel,
Search the idle channel in the selective call signaling data Table A that is not recorded in this radio station, just select this channel as talk channel;
Searching the idle channel in the selective call signaling data Table A that is recorded in this radio station, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Be not, just abandon this channel, continue the next idle channel of search, the carrier level that receives on searching the channel number that is not recorded in this radio station selective call signaling data Table A or channel is lower than the channel of the threshold level of setting in the duration of setting, just select it as talk channel;
The selective call signaling that comprises this talk channel number is sent in the caller radio station, start a timer simultaneously, if before timer overflows, receive the signaling of replying in called radio station, illustrate that called radio station finished last time conversation, if do not receive the signaling of replying in called radio station, illustrate that called radio station do not finish last time conversation as yet, can show busy;
In this case, conversation may be finished in called radio station, can be exhaled logical probability bigger, amended channel search sequencing table B
1', B
2' in channel have the part be idle.For example when 12345 calling stations 60006 of caller radio station, from selective call signaling data Table A as can be known calling number 60006 at binding hours T recently
XZIn sent calling.If send when calling out in caller radio station 12345, the conversation between calling number 60006, the called radio station 50047 finishes, and general family 60006 just can be exhaled in caller radio station 12345; If send when calling out in caller radio station 12345, calling number 60006 is still being conversed or is being shut down with called radio station 50047, and general family 60006 just can not be exhaled in caller radio station 12345.
Above-mentioned caller radio station adopts the search of random number pointer method to select idle channel, and specific practice has following three kinds:
(1) directly extracts the numerical value of 8 or 16 digit counters, get its remainder behind the mould Z as pointer value;
For example: at B
1', B
2' in number of channel Z=40, suppose that pointer value is that odd number is corresponding to B
1' table, pointer value is that even number is corresponding to channel search sequencing table B
2' table, the span of 16 digit counters is 0～65535, certain constantly the value of counter be 587, the remainder behind the mould 40 is 27, promptly pointer value is 27, its respective channels searching order table B
1' in the channel number of the 27th position, be the channel number that searches, because the remainder value after any digital-to-analogue 40 is between 0～39, just in time with channel search sequencing table B
1', B
2' in number of channel Z=40 corresponding.
(2) 0～(Z-1) the random number that directly produces with the function that produces random number in certain language is as pointer value;
For example: the RAND () function in the C language.
(3) extract the numerical value of 8 or 16 digit counters or the random number that directly produces with the function that produces random number in certain language as random number seed I, pointer value=(the mod Z of I * X+Y), wherein X, Y must have at least one to be prime number.
For example: at channel search sequencing table B
1', B
2' in number of channel Z=40, certain constantly the value of 16 digit counters be 324, promptly I is 324, and sets that X is 23, Y is 7, corresponding pointer value is 19.When producing random number, can also can extract the numerical value of counter again as random number seed I with 19 as random number seed I next time.
(2) start back, caller radio station make a call and shut down within the conversation binding hours back within the conversation binding hours again make a call the immediately method of condition improvement speech quality of start following steps are arranged successively:
Step 1 is a storage selective call signaling data Table A: the selective call signaling that selective call signaling of having stored when started shooting in the caller radio station and start back receive when control channel is waited for all receives selective call signaling t constantly according to the caller radio station
CJPrecedence record the N bar and comprise calling number, called number, talk channel D, the identification code of taking out stitches, conversation binding hours T
XZ, the caller radio station receives selective call signaling t constantly
CJSelective call signaling data Table A with the field intensity that is directly proportional with carrier level that detection receives in this channel writes down N at most
MAXBar, the N of wide band system
MAXBe that minimum is 1, is 79 natural number, the N of arrowband mode or interlace mode to the maximum
MAXBe that minimum is 1, is 157 natural number to the maximum;
Step 2 is to handle selective call signaling data Table A: selective call signaling data Table A is carried out data processing, delete all and satisfy inequality t
DQ〉=t
CJ+ T
XZThe selective call signaling that requires, t in the formula
DQBe the current time, t
CJBe the moment of caller radio station reception selective call signaling, T
XZBe the conversation binding hours of setting;
Step 3 is to revise channel search sequencing table B
1, B
2: equal to be lower than and be higher than two kinds of situations of the channel utilization rate that hubless system sets according to channel utilization, to channel search sequencing table B
1, B
2Make amendment:
(1) when the record strip number in the selective call signaling data Table A equals to be lower than (the channel utilization rate of 80 * setting), think that actual channel utilization rate equals to be lower than the channel utilization rate of setting, this moment the every record in caller radio station selective call signaling, just corresponding channel number in this signaling from all channel search sequencing table B
1, B
2Middle deletion, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires just is added on all channel search sequencing table B to corresponding channel number in this signaling again
1, B
2In original position, form amended channel search sequencing table B
1', B
2', number of channel Z=80-N wherein, the 80th, the shared channel number of hubless system;
(2) when the record strip number in the selective call signaling data Table A is higher than (the channel utilization rate of 80 * setting), think that actual channel utilization rate is higher than the channel utilization rate of setting, selective call signaling of the every record in caller radio station, just corresponding channel number in this signaling from all channel search sequencing table B
1, B
2Middle deletion, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires just is added on all channel search sequencing table B to corresponding channel number in this signaling again
1, B
2In original position, from selective call signaling data Table A, choose the caller radio station simultaneously and receive selective call signaling t constantly
CJSelective call signaling bar is the earliest counted L=M-(80-N), and corresponding channel number in these signalings is added on all channel search sequencing table B again
1, B
2In original position, form amended channel search sequencing table B
1', B
2', number of channel Z=(80-N)+L=M wherein, promptly number of channel Z remains M, and M is the positive integer between 20～40;
Step 4 is to adopt the search of random number pointer method to select idle channel: no matter channel utilization equals to be below or above the channel utilization rate of setting, all adopts following method:
(1) if the caller calling-up is not recorded in calling number, the called number in the selective call signaling data Table A in this radio station,
The caller radio station adopts the search of random number pointer method to select idle channel;
No matter search is the idle channel that or is not recorded in the selective call signaling data Table A in this radio station, all detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, be just to select this idle channel as talk channel; Not, just abandon this channel, continue the next idle channel of search,, just select it as talk channel until searching the channel that is lower than the threshold level of setting in the duration that the carrier level that receives setting;
(2) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data Table A in this radio station, and at average call duration T
mWithin,
The caller radio station directly shows busy, needn't searching idle channel;
Can shorten call time, reduce the workload in radio station and the collision probability on control channel thereof, in this case, called radio station also continuing conversation, can not exhale logical probability very big mostly;
(3) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data Table A in this radio station, and at average call duration T
mAfterwards,
The caller radio station adopts the search of random number pointer method to select idle channel;
No matter search is the idle channel that or is not recorded in the selective call signaling data Table A in this radio station, all detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, be just to select this idle channel as talk channel; Not, just abandon this channel, continue the next idle channel of search,, just select it as talk channel until searching the channel that is lower than the threshold level of setting in the duration that the carrier level that receives setting;
The selective call signaling that comprises this talk channel number is sent in the caller radio station, start a timer simultaneously, if before timer overflows, receive the signaling of replying in called radio station, illustrate that called radio station finished last time conversation, if do not receive the signaling of replying in called radio station, illustrate that called radio station do not finish last time conversation as yet, can show busy;
In this case, conversation may be finished in called radio station, can be exhaled logical probability bigger, amended channel search sequencing table B
1', B
2' in channel have the part be idle;
(3) start shooting again after the conversation binding hours make a call the immediately method of condition improvement speech quality of shutdown back, caller radio station has following steps successively:
Step 1 is a storage selective call signaling data Table A: the selective call signaling of having stored when started shooting in the caller radio station all receives selective call signaling t constantly according to the caller radio station
CJPrecedence record the N bar and comprise calling number, called radio station, talk channel D, the identification code of taking out stitches, conversation binding hours T
XZ, the caller radio station receives selective call signaling t constantly
CJSelective call signaling data Table A with the field intensity that is directly proportional with carrier level that detection receives in this channel writes down N at most
MAXBar, the N of wide band system
MAXBe that minimum is 1, is 79 natural number, the N of arrowband mode or interlace mode to the maximum
MAXBe that minimum is 1, is 157 natural number to the maximum;
Step 2 is to handle selective call signaling data Table A: selective call signaling data Table A is carried out data processing, delete all and satisfy inequality t
DQ〉=t
CJ+ T
XZThe selective call signaling that requires, t in the formula
DQBe the current time, t
CJBe the moment of caller radio station reception selective call signaling, T
XZBe the conversation binding hours of setting; Owing to be that shutdown back, caller radio station is at conversation binding hours T
XZAgain start makes a call immediately afterwards, so all records all satisfy inequality t
DQ〉=t
CJ+ T
XZAnd deleted, N=0 counted in the record in the selective call signaling data Table A;
Step 3 is to revise channel search sequencing table B
1, B
2: because N=0 counted in the record in the selective call signaling data Table A, therefore only there is the situation that equals to be lower than the channel utilization of setting and do not have the channel utilization that is higher than setting, and is to make a call immediately after the start, so channel search sequencing table B
1, B
2In number of channel Z=80-N=80, need not revise channel search sequencing table B
1, B
2, the 80th, the shared channel number of hubless system;
Step 4 is to adopt the search of random number pointer method to select idle channel: the caller radio station adopts the search of random number pointer method to select idle channel,
Searching an idle channel at random, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Not, just abandon this channel, continue the next idle channel of search,, just select it as talk channel until searching the channel that is lower than the threshold level of setting in the duration that the carrier level that receives on the channel setting.
(4) method of caller radio station initiation group calling state raising speech quality has following steps successively:
Step 1 is a storage selective call signaling data Table A: the selective call signaling that selective call signaling of having stored when started shooting in the caller radio station and start back receive when control channel is waited for all receives selective call signaling t constantly according to the caller radio station
CJPrecedence record the N bar and comprise calling number, called number, talk channel D, the identification code of taking out stitches, conversation binding hours T
XZ, the caller radio station receives selective call signaling t constantly
CJSelective call signaling data Table A with the field intensity that is directly proportional with carrier level that detection receives in this channel writes down N at most
MAXBar, the N of wide band system
MAXBe that minimum is 1, is 79 natural number, the N of arrowband mode or interlace mode to the maximum
MAXBe that minimum is 1, is 157 natural number to the maximum;
Step 2 is to handle selective call signaling data Table A: selective call signaling data Table A is carried out data processing, delete all and satisfy inequality t
DQ〉=t
CJ+ T
XZThe selective call signaling that requires, t in the formula
DQBe the current time, t
CJBe the moment of caller radio station reception selective call signaling, T
XZBe the conversation binding hours of setting;
Step 3 is to revise channel search sequencing table B
1, B
2: equal to be lower than and be higher than two kinds of situations of the channel utilization rate that hubless system sets according to channel utilization, to channel search sequencing table B
1, B
2Make amendment,
When (1) equaling to be lower than the channel utilization rate of setting, selective call signaling of the every record in caller radio station, just corresponding channel number in this signaling from all channel search sequencing table B
1, B
2Middle deletion, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires just is added on all channel search sequencing table B to corresponding channel number in this signaling again
1, B
2In original position, form amended channel search sequencing table B
1', B
2', number of channel Z=80-N wherein, the 80th, the shared channel number of hubless system;
When (2) being higher than the channel utilization rate of setting, selective call signaling of the every record in caller radio station, just corresponding channel number in this signaling from all channel search sequencing table B
1, B
2Middle deletion, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires just is added on all channel search sequencing table B to corresponding channel number in this signaling again
1, B
2In original position, from selective call signaling data Table A, choose the user simultaneously and receive selective call signaling t constantly
CJSelective call signaling bar is the earliest counted L=M-(80-N), and corresponding channel number in these signalings is added on all channel search sequencing table B again
1, B
2In original position, form amended channel search sequencing table B
1', B
2', number of channel Z=(80-N)+L=M wherein, promptly number of channel Z remains M, and M is the positive integer between 20～40;
Step 4 is to adopt the search of random number pointer method to select idle channel: equal to be lower than and to be higher than two kinds of situations of the channel utilization rate that hubless system sets according to channel utilization, take two kinds of different steps:
(1) equals to be lower than the channel utilization rate of setting
The caller radio station adopts random number pointer method directly to choose at random, needn't search for the selection idle channel;
Can shorten call set-up time, in this case, amended channel search sequencing table B
1', B
2' in all channels all be idle;
(2) be higher than the channel utilization rate of setting
The caller radio station adopts the search of random number pointer method to select idle channel,
Search the idle channel in the selective call signaling data Table A that is not recorded in this radio station, just select this channel as talk channel;
Searching the idle channel in the selective call signaling data Table A that is recorded in this radio station, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Be not, just abandon this channel, continue the next idle channel of search, the carrier level that receives on searching the channel number that is not recorded in this radio station selective call signaling data Table A or channel is lower than the channel of the threshold level of setting in the duration of setting, just select it as talk channel;
Step 5 be the caller radio station form record comprise corresponding under the group calling user number code table C of Member Users's number on the same group, when being used for the caller radio station and sending group calling, check that earlier whether calling number in the selective call signaling data Table A, called number be the Subscriber Number on the same group under this caller radio station.
Above-mentioned group calling user number code table C is as follows:
| Calling number | Called number | D | The identification code of taking out stitches | T XZ | T CJ | Field intensity |
| 50076 | 50089 | 48 | 127 | 5 | 13:10:56 | -78 |
| 60006 | 50047 | 12 | 231 | 5 | 13:09:26 | -90 |
| 50014 | 50025 | 65 | 435 | 5 | 13:07:43 | -89 |
| 50025 | 50078 | 31 | 156 | 5 | 13:06:23 | -90 |
| 50024 | 50099 | 15 | 621 | 5 | 13:06:08 | -77 |
| 50045 | 20053 | 66 | 381 | 5 | 13:06:01 | -67 |
(1) calling number in the selective call signaling data Table A or called number are the Subscriber Numbers on the same group under this radio station, Member Users's number of 00001 group under the radio station 50001 for example: 50001,50025,50048,50089 and 50098, wherein 50025 conversing with 50014, when 50001 initiate 00001 group group calling, just according to the channel number that writes down in the corresponding selective call signaling data Table A and the identification code of taking out stitches, on 65 talk channels, utilize 435 one signalings of taking out stitches of identification code of taking out stitches, with (50014,50025) assembling and dismantling line, make and all get back to control channel and keep the marquis, and then initiation group calling, just can guarantee 50001 exhale 50025 logical, but can not guarantee to exhale all Member Users in 00001 group logical, because it is a plurality of that a user's group calling number has,, just it can not be exhaled logical if certain user is participating in the group calling in other caller radio station;
(2) calling number, the called number in the selective call signaling data Table A is Subscriber Number outer on the same group under this caller radio station, and it is same as the prior art directly to initiate group calling, can not improve complete group of user's call completion ratio.
Test shows: the no third order intermodulation group method of simple utilization is the group selection talk channel in contrast, the cross-talk rate of cochannel is 7.3%, and this embodiment will not have the third order intermodulation method and talk channel is selected in selective call signaling data table method integrated use of the present invention, cochannel cross-talk rate drops to 1.2%, False Rate is than the obvious reduction of control group more than 6 times, significantly improve the quality that communicates with each other between the talk channel, can also shorten call set-up time, improve full group user call completion ratio.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make as the dried fruit simple push and drill or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (9)
1. a hubless system improves the method for speech quality, and communications band is set to S shared channel, and is divided into a plurality of no third order intermodulation groups, lines up at least 1 part of channel search sequencing table, it is characterized in that:
Following steps are arranged successively:
Step 1 is a storage selective call signaling data table: receive selective call signaling t constantly according to the caller radio station
CJPrecedence, the selective call signaling that selective call signaling of having stored when started shooting in N bar caller radio station and start back receive when control channel is waited for all is recorded in the selective call signaling data table, and described selective call signaling data table comprises calling number, called number, talk channel D, the identification code of taking out stitches, conversation binding hours T
XZ, the caller radio station receives selective call signaling t constantly
CJField intensity with being directly proportional with carrier level that detection receives in this channel writes down selective call signaling N at most
MAXBar, the N of wide band system
MAXBe that minimum is 1, is 79 natural number, the N of arrowband mode or interlace mode to the maximum
MAXBe that minimum is 1, is 157 natural number to the maximum;
Step 2 is to handle selective call signaling data table: selective call signaling data table is carried out data processing, delete all and satisfy inequality t
DQ〉=t
CJ+ T
XZThe selective call signaling that requires, t in the formula
DQBe the current time, t
CJBe the moment of caller radio station reception selective call signaling, T
XZBe the conversation binding hours of setting;
Step 3 is to revise the channel search sequencing table: equal to be lower than and to be higher than two kinds of situations of the channel utilization rate that hubless system sets according to channel utilization, the channel search sequencing table is made amendment:
When (1) equaling to be lower than the channel utilization rate of setting, selective call signaling of the every record in caller radio station just corresponding channel number in this signaling is deleted from all channel search sequencing tables, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires, just corresponding channel number in this signaling is added on original position in all channel search sequencing tables again, form amended channel search sequencing table, number of channel Z=S-N wherein, S is the shared channel number of hubless system;
When (2) being higher than the channel utilization rate of setting, selective call signaling of the every record in caller radio station just corresponding channel number in this signaling is deleted from all channel search sequencing tables, and inequality t is satisfied in one of every deletion
DQ〉=t
CJ+ T
XZThe selective call signaling that requires just is added on original position in all channel search sequencing tables to corresponding channel number in this signaling again, chooses the user simultaneously and receive selective call signaling t constantly from selective call signaling data table
CJSelective call signaling bar is the earliest counted L=M-(S-N), corresponding channel number in these signalings is added on original position in all channel search sequencing tables again, form amended channel search sequencing table, number of channel Z=(S-N)+L=M wherein, be that number of channel Z is M, M is the positive integer between 20～S/2;
Step 4 is to adopt the search of random number pointer method to select idle channel: have at least following three kinds of methods (1), (2), (3) to produce pointer value at random, the channel number that points in amended channel search sequencing table is exactly the starting point of the idle channel selected of caller radio station number or caller broadcasting station search idle channel:
(1) directly extracts the numerical value of 8 or 16 digit counters, get its remainder behind the mould Z as pointer value;
(2) 0～(Z-1) the random number that directly produces with the function that produces random number in certain language is as pointer value;
(3) extract the numerical value of 8 or 16 digit counters or the random number that directly produces with the function of generation random number in certain language as random number seed I, pointer value=(the mod Z of I * X+Y), wherein X, Y must have at least one to be prime number, Z is the number of channel of amended channel search sequencing table, pointer value is 0 corresponding to the first channel number in the amended channel search sequencing table, and pointer value is that Z-1 is corresponding to the end channel number in the table.
2. improve the method for speech quality according to the described hubless system of claim 1, it is characterized in that:
Adopting the search of random number pointer method to select idle channel under the state that makes a call after the conversation binding hours after the start of caller radio station, is to take two kinds of different steps according to two kinds of situations that channel utilization equals to be lower than with the channel utilization rate that is higher than the hubless system setting:
(1) equals to be lower than the channel utilization rate of setting
1) if the caller calling-up is not recorded in calling number, the called number in the selective call signaling data table in this radio station,
The caller radio station adopts random number pointer method directly to choose idle channel from the channel search sequencing table, needn't search for the selection idle channel;
2) if the caller calling-up is recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mWithin,
The caller radio station directly shows busy, needn't search for the selection idle channel;
3) if the caller calling-up is recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mAfterwards,
The caller radio station adopts random number pointer method directly to choose idle channel from the channel search sequencing table, send the selective call signaling that comprises called subscriber's address code and this idle channel number, start a timer simultaneously, if before timer overflows, receive the signaling of replying in called radio station, illustrate that called radio station finished last time conversation, if do not receive the signaling of replying in called radio station, illustrate that called radio station do not finish last time conversation as yet, can show busy;
(2) be higher than the channel utilization rate of setting
1) if the caller calling-up is not recorded in calling number, the called number in the selective call signaling data table in this radio station,
The caller radio station is adopted random number pointer method to search for successively in the channel search sequencing table and is selected idle channel,
Search the idle channel in the selective call signaling data table that is not recorded in this radio station, just select this channel as talk channel;
Searching the idle channel in the selective call signaling data table that is recorded in this radio station, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Be not, just abandon this channel, continue the next idle channel of search, the carrier level that receives on searching the channel number that is not recorded in this radio station selective call signaling data table or channel is lower than the channel of the threshold level of setting in the duration of setting, just select it as talk channel;
2) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mWithin,
The caller radio station directly shows busy, needn't search for the selection idle channel;
3) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mAfterwards,
The caller radio station is adopted random number pointer method to search for successively in the channel search sequencing table and is selected idle channel,
Search the idle channel in the selective call signaling data table that is not recorded in this radio station, just select this channel as talk channel;
Searching the idle channel in the selective call signaling data table that is recorded in this radio station, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Be not, just abandon this channel, continue the next idle channel of search, the carrier level that receives on searching the channel number that is not recorded in this radio station selective call signaling data table or channel is lower than the channel of the threshold level of setting in the duration of setting, just select it as talk channel;
The selective call signaling that comprises this talk channel number is sent in the caller radio station, start a timer simultaneously, if before timer overflows, receive the signaling of replying in called radio station, illustrate that called radio station finished last time conversation, if do not receive the signaling of replying in called radio station, illustrate that called radio station do not finish last time conversation as yet, can show busy.
3. improve the method for speech quality according to the described hubless system of claim 1, it is characterized in that:
Conversation make a call or shut down within the binding hours back within the conversation binding hours again start make a call immediately and adopt the search of random number pointer method to select idle channel under the state, be that the channel utilization rate that channel utilization equals to be below or above setting all adopts following method:
(1) if the caller calling-up is not recorded in calling number, the called number in the selective call signaling data table in this radio station,
The caller radio station adopts the search of random number pointer method to select idle channel;
No matter search is the idle channel that or is not recorded in the selective call signaling data table in this radio station, all detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, be just to select this idle channel as talk channel; Not, just abandon this channel, continue the next idle channel of search,, just select it as talk channel until searching the channel that is lower than the threshold level of setting in the duration that the carrier level that receives setting;
(2) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mWithin,
The caller radio station directly shows busy, needn't searching idle channel;
(3) if the caller calling-up has been recorded in calling number, the called number in the selective call signaling data table in this radio station, and at average call duration T
mAfterwards,
The caller radio station adopts the search of random number pointer method to select idle channel;
No matter search is the idle channel that or is not recorded in the selective call signaling data table in this radio station, all detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, be just to select this idle channel as talk channel; Not, just abandon this channel, continue the next idle channel of search,, just select it as talk channel until searching the channel that is lower than the threshold level of setting in the duration that the carrier level that receives setting;
The selective call signaling that comprises this talk channel number is sent in the caller radio station, start a timer simultaneously, if before timer overflows, receive the signaling of replying in called radio station, illustrate that called radio station finished last time conversation, if do not receive the signaling of replying in called radio station, illustrate that called radio station do not finish last time conversation as yet, can show busy.
4. improve the method for speech quality according to the described hubless system of claim 1, it is characterized in that:
Again start makes a call immediately and adopts random number pointer method search selection idle channel under the state after the conversation binding hours, is that the channel utilization rate that channel utilization always is lower than setting adopts following method:
Searching an idle channel at random, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Not, just abandon this channel, continue the next idle channel of search,, just select it as talk channel until searching the channel that is lower than the threshold level of setting in the duration that the carrier level that receives on the channel setting.
5. improve the method for speech quality according to the described hubless system of claim 1, it is characterized in that:
Initiating to adopt under the group calling state search of random number pointer method to select idle channel in the caller radio station, is to take two kinds of different steps according to two kinds of situations that channel utilization equals to be lower than with the channel utilization rate that is higher than the hubless system setting:
(1) equals to be lower than the channel utilization rate of setting
The caller radio station adopts random number pointer method directly to choose at random, needn't search for the selection idle channel;
(2) be higher than the channel utilization rate of setting
The caller radio station adopts the search of random number pointer method to select idle channel,
Search the idle channel in the selective call signaling data table that is not recorded in this radio station, just select this channel as talk channel;
Searching the idle channel in the selective call signaling data table that is recorded in this radio station, just detect whether the carrier level that receives on this channel is lower than setting in the duration of setting threshold level, is just to select this idle channel as talk channel; Be not, just abandon this channel, continue the next idle channel of search, the carrier level that receives on searching the channel number that is not recorded in this radio station selective call signaling data table or channel is lower than the channel of the threshold level of setting in the duration of setting, just select it as talk channel.
6. improve the method for speech quality according to the described hubless system of claim 5, it is characterized in that:
Initiating step 5 under the group calling state in the caller radio station is to check that whether calling number in the selective call signaling data table, called number be the Subscriber Number on the same group under this caller radio station
(1) calling number or called number are the Subscriber Numbers on the same group under this caller radio station, just according to the channel number of corresponding selective call signaling data table record and the identification code of taking out stitches, first one signaling of taking out stitches on the talk channel at this number place, make it return control channel, and then initiation group calling, just can exhale the Subscriber Number of colluding in the group, but participate in except the Subscriber Number of other caller radio station group calling;
(2) calling number, called number are Subscriber Numbers outer on the same group under this caller radio station, just directly initiate group calling.
7. improve the method for speech quality according to the described hubless system of claim 6, it is characterized in that:
The caller radio station initiate step 5 under the group calling state be the caller radio station form record comprise corresponding under the group calling user number code table of Member Users's number on the same group, whether the calling number, called number that is used for checking selective call signaling data table is the Subscriber Number on the same group under this caller radio station.
8. improve the method for speech quality according to any described hubless system in the claim 1～7, it is characterized in that:
The channel utilization rate of shared channel S=80 respective settings is 75%.
9. improve the method for speech quality according to the described hubless system of claim 8, it is characterized in that:
When the channel utilization rate is lower than when equaling 75%, conversation binding hours T
XZBe 5 minutes, average call duration T
mIt is 2.5 minutes;
When the channel utilization rate is higher than 75%, conversation binding hours T
XZAutomatically change into 3 minutes, average call duration T
mIt is 1.5 minutes.
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| CN1315352C true CN1315352C (en) | 2007-05-09 |
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| CN100372421C (en) * | 2006-01-13 | 2008-02-27 | 北京交通大学 | Monitoring method of centreless multichannel selective addressing mobile communication system |
| CN101114848B (en) * | 2006-07-24 | 2011-05-04 | 展讯通信（上海）有限公司 | Emitting power grade control method of digital non-center system |
| CN101114866B (en) * | 2006-07-26 | 2010-10-06 | 展讯通信（上海）有限公司 | Time slot synchronization method of digital non-center communication system |
| WO2011026271A1 (en) * | 2009-09-04 | 2011-03-10 | 海能达通信股份有限公司 | Method for self-addressing communication applied to interphone |
| CN101765029A (en) * | 2009-09-04 | 2010-06-30 | 深圳市好易通科技有限公司 | Self-addressed communication method applied to interphone |
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| US5276908A (en) * | 1990-10-25 | 1994-01-04 | Northern Telecom Limited | Call set-up and spectrum sharing in radio communication on systems with dynamic channel allocation |
| JPH0833033A (en) * | 1994-07-12 | 1996-02-02 | N T T Ido Tsushinmo Kk | Method for controlling radio channel allocation and device therefor |
| CN1481177A (en) * | 2003-07-18 | 2004-03-10 | 深圳市三威电子有限公司 | Alternating mobile communication method without central multiple channels, without third-order on intermodulation addressing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048296A (en) * | 1989-06-22 | 1991-01-02 | 西安电子科技大学 | Full duplex does not have the center multichannel common type movable communication network |
| US5276908A (en) * | 1990-10-25 | 1994-01-04 | Northern Telecom Limited | Call set-up and spectrum sharing in radio communication on systems with dynamic channel allocation |
| JPH0833033A (en) * | 1994-07-12 | 1996-02-02 | N T T Ido Tsushinmo Kk | Method for controlling radio channel allocation and device therefor |
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