CN105376860A - Wireless resource management method for packet service - Google Patents
Wireless resource management method for packet service Download PDFInfo
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- CN105376860A CN105376860A CN201410412979.3A CN201410412979A CN105376860A CN 105376860 A CN105376860 A CN 105376860A CN 201410412979 A CN201410412979 A CN 201410412979A CN 105376860 A CN105376860 A CN 105376860A
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Abstract
The invention discloses a wireless resource management method for packet services. The method is characterized in that a list including mobile terminal users and system information is established in a scheduler of a base station end, wherein the contents recorded in the list include state information of the mobile terminal users connected to a base station, the number of MAC channels and the number of service channels that a system has already used at present, the number of remaining MAC channels and the number of remaining service channels, values of timers controlling the switching states of the mobile terminal users, values of timers for recording the length of called durations after the mobile terminal users have already had services, the number of burst data generated by each mobile terminal user and the waiting time of obtaining service channels by the burst data generated by each mobile terminal user. The channel utilization rate of a system is maintained while MAC channels needed by the system are reduced under the same condition, so the overall performance of the system is ensured.
Description
Technical field
The present invention relates to a kind of radio resource management method of Packet Service.
Background technology
In the face of the radio spectrum resources that the mobile phone users more and more with different business requirement accesses and is becoming tight day, cell mobile communication systems is except needing the technology of physical layer to support that high speed packet service transmits, except larger power system capacity, also needing reasonable efficiently radio resource management method to what ensure wireless money frequency spectrum source makes full use of scale-multiple services quality of service requirement of sufficient multi-user, obtains the optimization of overall system performance.
" International Electro and the Institution of Electrical Engineers's Computers and Communication joint conference the 21 annual meeting " describes the state switching method of a kind of medium education (MAC) layer to seek the compromise and balance between occupying system resources and service quality.The mobile phone users being in idle condition must obtain MAC channel before can carrying out data transmission and Traffic Channel enters state of activation, a mobile phone users call duration is alternately made up of multiple time burst and silence period, the timer T_active that one keeps Traffic Channel is started after a burst transfers of data in process of transmitting, if next bursty data arrives before timer T_active overflows, with this bursty data of traffic channel transmission kept, otherwise release Traffic Channel enters control hold mode starts timer T_hold simultaneously, if next bursty data arrives before timer T_hold overflows, again compete Traffic Channel, otherwise enter suspended state and start timer T_suspend simultaneously, if had bursty data to arrive before timer T_suspend overflows, enter control hold mode, otherwise enter idle condition, in whole mobile phone users call duration, mobile phone users keeps MAC channel always.
The shortcoming of this method is: owing to keeping MAC channel in whole mobile phone users call duration always, if the Traffic Channel of system also has residue when MAC channel is less, even if so other mobile phone users have data to produce the request also can not carrying out Traffic Channel because can not get MAC channel, cause the waste of Traffic Channel and the reduction of system channel utilance like this, if increase the overhead that MAC channel quantity can increase again system.
Summary of the invention
For solving above-mentioned existing shortcoming, main purpose of the present invention is the radio resource management method of the Packet Service providing a kind of practicality, the channel utilization of keeping system while under equal conditions reducing the MAC number of channel needed for system, thus the overall performance of the system of guarantee.
For reaching above-described object, the radio resource management method of a kind of Packet Service of the present invention takes following technical scheme:
A kind of radio resource management method of Packet Service, it is characterized in that, the table that one comprises mobile phone users and system information is set up in the scheduler of base station end, the content recorded in this table comprises, the state information of the mobile phone users be connected with base station, the current own MAC number of channel of system and Traffic Channel number, the remaining MAC number of channel and Traffic Channel number, control the value of each timer that mobile phone users state switches, be used for recording the value of the timer of call duration length after each mobile phone users generation business, the number of the bursty data that each mobile phone users produces, the bursty data that each mobile phone users produces obtains the stand-by period of Traffic Channel, the signaling consumption number that each mobile phone users is saved, the state information of mobile phone users described in table comprises, idle condition, initialization controls hold mode, state of activation, control hold mode and suspended state, if the mobile phone users being in idle condition is the call connection setting up certain business send a request signal to the scheduler of base station end, this request signal comprises the type of service of request, the Traffic Channel number of request, then scheduler is by the situation obtaining current MAC channel of tabling look-up, if there is MAC channel idle, then distribute to user's MAC channel, CU MAC channel is also switched to initialization control hold mode
,if there is no MAC channel idle, then user keeps idle condition, and resend request signal to the scheduler of base station end at next frame, the stand-by period of user increases a frame length simultaneously, then, to the mobile phone users being in initialization control hold mode, scheduler obtains the service condition of current traffic channel by tabling look-up, if available free Traffic Channel and number are more than or equal to the Traffic Channel number of user's request, then distribute to the Traffic Channel number of its request of user, when after the Traffic Channel that user obtains needed for it, user is switched to state of activation and discharges its MAC channel taken, in scheduler, after record traffic generation, the timer T---_call of call duration length starts to start simultaneously, if available free Traffic Channel but number are less than the Traffic Channel number of user's request, or there is no idle Traffic Channel, then user keeps initialization to control hold mode, the stand-by period of user increases a frame length simultaneously, after the data that first burst period produces are sent by the user entering state of activation in a call duration, scheduler starts timer T_active, and keep Traffic Channel a period of time by the timer value of setting, if there be second bursty data to arrive before timer overflows, scheduler distributes original Traffic Channel and sends to this bursty data, the signaling consumption of user is saved number and is added one, if do not have second bursty data to arrive before timer overflows, then scheduler release is distributed to the Traffic Channel of user and is switched to control hold mode, after user enters state of a control, scheduler starts timer T_hold immediately, if user had bursty data to arrive before timer overflows, the transmission that Traffic Channel carries out data is once obtained by every frame competition, if do not have bursty data to arrive before timer overflows, then enter suspended state, scheduler is that the user entering suspended state starts timer T_suspend, if had bursty data to arrive before timer overflows, user enters control hold mode by obtaining MAC channel, if do not have bursty data to arrive before timer overflows, then user enters idle condition, user-dependent all information therewith in the scheduler delete list of now base station end, the every frame of record in table upgrades once.
Adopt the present invention of as above technical scheme, there is following beneficial effect:
The present invention, the channel utilization of keeping system while under equal conditions reducing the MAC number of channel needed for system, thus the overall performance of the system of guarantee.
Accompanying drawing explanation
Accompanying drawing 1 is state switching principle schematic diagram of the present invention.
Accompanying drawing 2 is whether state of activation is switched to the exemplary plot controlling hold mode.
Accompanying drawing 3 is system channel utilance schematic diagram in different T_active timer value situation.
Accompanying drawing 4 is system channel utilance in different T_active timer value situation, and signaling consumption is saved, average bursty data stand-by period and combination property schematic diagram.
Embodiment
In order to further illustrate the present invention, be described further below in conjunction with drawings and Examples:
Embodiment 1:
The specific implementation method of the Packet Service RRM that the present embodiment keeps based on channel, first in the scheduler of described base station end, set up the table that comprises mobile phone users and system information, have in recording in this table: the state information of the mobile phone users be connected with base station, the current MAC number of channel of system and Traffic Channel number, the remaining MAC number of channel and Traffic Channel number, control the value of each timer that mobile phone users state switches, be used for recording the value of the timer of call duration length after each mobile phone users generation business, the number of the bursty data that each mobile phone users produces, the bursty data that each mobile phone users produces obtains the stand-by period of Traffic Channel, the signaling consumption number that each mobile phone users is saved, the state information of mobile phone users described in table has, idle condition, initialization controls hold mode, state of activation, control hold mode and suspended state, the every frame of record in table upgrades once.
When the mobile phone users being in idle condition 1 be the call connection setting up certain business send the scheduler of a wide request signal to base station end time, this request signal comprises the type of service of request, the Traffic Channel number of request, then scheduler is by the situation obtaining current MAC channel of tabling look-up: if there is MAC channel idle, then distribute to user's channel, CU MAC channel 2 is also switched to initialization control hold mode 3; If do not have MAC channel idle, then user keeps idle condition, and resends request signal to the scheduler of base station end at next frame, and the stand-by period of user increases a frame length simultaneously;
To the mobile phone users being in initialization control hold mode 3, scheduler obtains the service condition of current traffic channel by tabling look-up, if available free Traffic Channel and number are more than or equal to the Traffic Channel number of user's request, then distribute to the Traffic Channel number of its request of user, when after the Traffic Channel 5 that user obtains needed for it, user is switched to state of activation 6 and discharges its MAC channel 4 taken, simultaneously in scheduler record traffic produce after the timer T_call of call duration length start to start: if available free Traffic Channel but number are less than the Traffic Channel number of user's request, or there is no idle Traffic Channel, then user keeps initialization to control hold mode, the stand-by period of user increases a frame length simultaneously,
When the user entering state of activation 6 starts the transmission carrying out data, a call duration is made up of a lot of burst period and quiet period, after the data that first burst period produces are sent by user, the Traffic Channel of user distributed to by scheduler not release immediately, but starts timer T_active and keep Traffic Channel a period of time by the timer value of setting; With reference to accompanying drawing 2: if next bursty data arrives before T_active overflows, then scheduler designated user carries out the transmission of data by the Traffic Channel of previous burst data requests, saves the signaling consumption of system; If next bursty data does not arrive before T_active overflows, then the Traffic Channel 7 of user is distributed in scheduler release, and be switched to control hold mode 8, user competes Traffic Channel again when next bursty data arrives, it is the stand-by period of bursty data in the time of competition before new business channel, such process be continued until recording user business produce after the timer T_call of call duration length overflow, come back to the calling that initial condition is carried out next time after an end of calling of user;
After user enters state of a control 8, scheduler starts timer T_hold immediately: if user had bursty data to arrive before timer overflows 10, then must once obtain by every frame competition the transmission that Traffic Channel 9 carries out data, the stand-by period obtaining Traffic Channel is the competition frame number before obtaining Traffic Channel, if do not have bursty data to arrive before timer overflows 10, then enter suspended state 11;
Scheduler is that the user entering suspended state 11 starts timer T_suspend, if had bursty data to arrive before timer overflows 13, user enters control hold mode 8 by obtaining MAC channel 12, if do not have bursty data to arrive before timer overflows 13, then user enters idle condition, user-dependent all information therewith in the scheduler delete list of now base station end.
It is the state that mobile phone users experiences in call connection procedure that described initialization controls hold mode, this state only experiences once in whole winter calling procedure, be successfully established in call connection, mobile phone users is assigned with after Traffic Channel carries out business transmission, just no longer enter this state, until re-establish call connection process next time.
In the present embodiment, the signaling consumption of define system saves the ratio that S is the bursty data number produced in total pare down expenses number of times and the simulation time of system, and scope is between 0 to 1; The channel utilization 0 of the define system ratio of total channel sum for providing with system for the channel sum transmitting data in simulation time, scope is 0 to 1; Define the ratio that the average bursty data stand-by period knows bursty data stand-by period sum and the bursty data number produced for simulation time is interior, even if suppose not need competition just can obtain Traffic Channel after a certain frame bursty data produces, bursty data also can be waited for and start just to transmit at next frame, stand-by period is half frame length from the statistical significance, therefore the average bursty data stand-by period is for being more than or equal to 0.5 frame length, in order to the signaling consumption of system save 8 and system channel utilance 0 scope consistent, get 0.5/W in simulation result; The combination property 0 of define system is S, U, 0.5/W sum.’
In the performance evaluation of the present embodiment, suppose that the free time of customer service is not more than T_hold, do not consider that user enters the situation of suspended state 11 like this, the situation that user enters the analysis of suspended state 11 situation and the present embodiment is similar.
In emulation, suppose that voice user number is 21, packet data user number is 9; The burst period of voice user and quiet period all obey the exponential distribution that average is 1 second; Packet data user burst period obeys the heavy-tailed Pareto distribution of formal parameter α=1.5, spreading parameter k=0.2: quiet period obeys the exponential distribution that average is 1 second; Frame length is 20 milliseconds, and mean call duration is 2 minutes, and the Traffic Channel number that system provides is 120, and user can equiprobability request 1,3,6,9 or 12 Traffic Channel.
The performance of the present embodiment as accompanying drawing 3, shown in 4.In fig. 3, abscissa is the duration of T_active, unit is frame, ordinate is channel utilization, curve A represents the system channel utilance performance of 10 MAC channels that the present embodiment uses, the system channel utilance performance of 30 MAC channels that the state switching method of medium education (MAC) layer that curve B represents " International Electro and the Institution of Electrical Engineers's Computers and Communication joint conference the 21 annual meeting " introduces uses.Can see from result, closely, this shows the channel utilization of the present invention's energy keeping system while the MAC number of channel needed for minimizing system to both performances.In accompanying drawing 4, abscissa is the duration than generation, unit is frame, and ordinate is ratio, and in the present embodiment, system employs 10 MAC channels, curve 5 represents that the signaling consumption of system saves performance, curve 0.5/W represents the performance of 0.5 frame length and the ratio of the average latency of bursty data, and curve U represents the channel utilization performance of system, and curve 0 represents the combination property of system, can see from result, the combination property of system obtains maximum when T_active is 110 frame.
Claims (1)
1. the radio resource management method of a Packet Service, it is characterized in that, the table that one comprises mobile phone users and system information is set up in the scheduler of base station end, the content recorded in this table comprises, the state information of the mobile phone users be connected with base station, the current own MAC number of channel of system and Traffic Channel number, the remaining MAC number of channel and Traffic Channel number, control the value of each timer that mobile phone users state switches, be used for recording the value of the timer of call duration length after each mobile phone users generation business, the number of the bursty data that each mobile phone users produces, the bursty data that each mobile phone users produces obtains the stand-by period of Traffic Channel, the signaling consumption number that each mobile phone users is saved, the state information of mobile phone users described in table comprises, idle condition, initialization controls hold mode, state of activation, control hold mode and suspended state, if the mobile phone users being in idle condition is the call connection setting up certain business send a request signal to the scheduler of base station end, this request signal comprises the type of service of request, the Traffic Channel number of request, then scheduler is by the situation obtaining current MAC channel of tabling look-up, if there is MAC channel idle, then distribute to user's MAC channel, CU MAC channel is also switched to initialization control hold mode
,if there is no MAC channel idle, then user keeps idle condition, and resend request signal to the scheduler of base station end at next frame, the stand-by period of user increases a frame length simultaneously, then, to the mobile phone users being in initialization control hold mode, scheduler obtains the service condition of current traffic channel by tabling look-up, if available free Traffic Channel and number are more than or equal to the Traffic Channel number of user's request, then distribute to the Traffic Channel number of its request of user, when after the Traffic Channel that user obtains needed for it, user is switched to state of activation and discharges its MAC channel taken, in scheduler, after record traffic generation, the timer T---_call of call duration length starts to start simultaneously, if available free Traffic Channel but number are less than the Traffic Channel number of user's request, or there is no idle Traffic Channel, then user keeps initialization to control hold mode, the stand-by period of user increases a frame length simultaneously, after the data that first burst period produces are sent by the user entering state of activation in a call duration, scheduler starts timer T_active, and keep Traffic Channel a period of time by the timer value of setting, if there be second bursty data to arrive before timer overflows, scheduler distributes original Traffic Channel and sends to this bursty data, the signaling consumption of user is saved number and is added one, if do not have second bursty data to arrive before timer overflows, then scheduler release is distributed to the Traffic Channel of user and is switched to control hold mode, after user enters state of a control, scheduler starts timer T_hold immediately, if user had bursty data to arrive before timer overflows, the transmission that Traffic Channel carries out data is once obtained by every frame competition, if do not have bursty data to arrive before timer overflows, then enter suspended state, scheduler is that the user entering suspended state starts timer T_suspend, if had bursty data to arrive before timer overflows, user enters control hold mode by obtaining MAC channel, if do not have bursty data to arrive before timer overflows, then user enters idle condition, user-dependent all information therewith in the scheduler delete list of now base station end, the every frame of record in table upgrades once.
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| CN201410412979.3A CN105376860A (en) | 2014-08-21 | 2014-08-21 | Wireless resource management method for packet service |
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| CN201410412979.3A CN105376860A (en) | 2014-08-21 | 2014-08-21 | Wireless resource management method for packet service |
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| CN105376860A true CN105376860A (en) | 2016-03-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788065A (en) * | 2019-01-30 | 2019-05-21 | 广东海聊科技有限公司 | A kind of offline message transmission method and offline message transmitting device based on dipper system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788065A (en) * | 2019-01-30 | 2019-05-21 | 广东海聊科技有限公司 | A kind of offline message transmission method and offline message transmitting device based on dipper system |
| CN109788065B (en) * | 2019-01-30 | 2021-09-24 | 广东海聊科技有限公司 | Off-line message transmission method and off-line message transmission device based on Beidou system |
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Application publication date: 20160302 |