CN101159480B - Code tree self-adaptive recovery method and apparatus in communication system - Google Patents
Code tree self-adaptive recovery method and apparatus in communication system Download PDFInfo
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- CN101159480B CN101159480B CN2007101772254A CN200710177225A CN101159480B CN 101159480 B CN101159480 B CN 101159480B CN 2007101772254 A CN2007101772254 A CN 2007101772254A CN 200710177225 A CN200710177225 A CN 200710177225A CN 101159480 B CN101159480 B CN 101159480B
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Abstract
The invention provides a method and a device of the adaptive restoration of a code tree in a communication system, wherein the method includes that: Step 1, if channelizing codes are released by users or the reconfiguration of the channelizing codes is accomplished by the users on the current carrier frequency, determining whether the system meets the preset condition, and if it does, execute Step 2, or finishing the procedure; Step 2, examining each occupied channelizing code of all time-slot code trees on the current carrier frequency, and if the examined channelizing code is not the channelizing code used by a public channel or not the channelizing code used by a special user, the examined channelizing code is released. By using the invention, once the code trees have the channelizing codes which are hung abnormally, the system has the ability to release the channelizing codes and restores the code trees normal.
Description
Technical field
The present invention relates to the TDS-CDMA system of communication field, particularly relate to the method and apparatus of code tree self-adaptive recovery in the communication system.
Background technology
In TD-SCDMA (TD SDMA) system, physical channel is that the combination by carrier frequency/channel code identifies.User's business datum is all carried by physical channel, and therefore, which user radio network controller need write down and use which channel code, that is, radio network controller is necessary for each time slot of each carrier frequency and safeguards a cover code tree.So-called code tree, the i.e. set of the channel code that is used on each time slot of each carrier frequency.In each user's access, release, reconfiguration course,, will bring the variation of the code tree of this user place carrier frequency as long as the channel code that the user uses changes.The maintenance of code tree is the important support of system's operation, in case code tree breaks down, system will paralyse gradually.
In existing technology, the quality of RNC (base station controller) software that normally whether places one's entire reliance upon of code tree.That is,, remove non-artificial the intervention, otherwise this time slot code tree that goes wrong will can't recover normal forever voluntarily in case bug (defective) appears in RNC software or fault causes code tree mistake to occur.Wherein modal code tree mistake is that code word is hung, and promptly have the channel code that does not discharge on the code tree, but this channel code can not find corresponding user.Wherein the people is for for example intervening: the people is for carrying out obturation, separating inaccessible carrier frequency.
Therefore, this robustness that can not self-healing characteristic have seriously reduced system of code tree in the prior art.
Summary of the invention
The method and apparatus that the purpose of this invention is to provide code tree self-adaptive recovery in a kind of communication system, in a single day code tree breaks down and can't carry out the technical problem of self-adaptive recovery in the solution prior art.
To achieve these goals, the invention provides the method for code tree self-adaptive recovery in a kind of communication system, wherein, comprise the steps:
Step 1 is reshuffled channel code if having the user to discharge channel code on the current carrier frequency or have the user to finish, and judges then whether system satisfies preset condition, is execution in step two then, otherwise process ends;
Step 2, check each occupied channel code of each time slot code tree on the current carrier frequency, be not the employed channel code of private subscribers if checked channel code neither is the employed channel code of common signal channel yet, then this checked channel code discharged.
Above-mentioned method, wherein, in described step 1, described preset condition is: judge whether the dedicated channel number of users on the current carrier frequency is zero, if not, process ends is if verify counter and add one; Judge the counting the thresholding whether count value of counter accumulative total is provided with more than or equal to system, if more than or equal to, then carry out step 2.
Above-mentioned method wherein, in described step 1, also comprises: if the dedicated channel number of users on the current carrier frequency is zero, the count value of counter is added one, and the count value of judging counter is less than the counting thresholding of setting, then process ends; And after described step 2, also comprise: counter O reset.
Above-mentioned method, wherein, the counting thresholding that described system is provided with is by the radio network controller setting.
Above-mentioned method wherein, in described step 2, is carried out described inspection by the mode that travels through all channel codes successively.
Above-mentioned method wherein, in described step 1, learns that by radio network controller the user has discharged channel code or user and finished and reshuffle channel code.
Above-mentioned method, wherein, the employed channel code of described common signal channel comprises: Common Control Physical Channel, Page Indication Channel, rapid physical Random Access Channel, Physical Random Access Channel, high-speed physical downlink shared channel (HS-PDSCH), shared control channel and the employed channel code of shared information channel.
Above-mentioned method, wherein, the employed channel code of described private subscribers comprises: the employed channel code of private subscribers and the busy channel code of transient state user that is in the reconfiguration course that are in stable state.
To achieve these goals, the present invention also provides the device of code tree self-adaptive recovery in a kind of communication system, wherein, comprising: open unit and performance element; Described unlatching unit is used for: reshuffling channel code if having the user to discharge channel code on the current carrier frequency or have the user to finish, judge then whether system satisfies preset condition, is the function of then carrying out described performance element, otherwise finishes; Described performance element is used for, check each occupied channel code of each time slot code tree on the current carrier frequency, be not the employed channel code of private subscribers if checked channel code neither is the employed channel code of common signal channel yet, then this checked channel code discharged.
Above-mentioned device, wherein, described communication system is a TDS-CDMA system, described preset condition is: judge whether the dedicated channel number of users on the current carrier frequency is zero, if not, process ends is if verify counter and add one; Judge the count value whether number of counter accumulative total is provided with more than or equal to radio network controller, if more than or equal to, then carry out step 2.
Technique effect of the present invention is:
Utilize the present invention, in case the channel code that appearance is hung unusually on the code tree, system will have the ability they are discharged, and recover the normal of code tree.
The present invention also by the entry condition of " the private subscribers number is 0, counter greater than thresholding " is set, has not only guaranteed can the user in the communication not to be impacted, and can avoid overfrequency or very few traversing operation.
Description of drawings
Fig. 1 is the flow chart of steps of the inventive method;
Fig. 2 is the flow chart of a specific embodiment of the inventive method;
Fig. 3 is the code tree of the main carrier frequency time slot 4 among the inventive method embodiment.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the accompanying drawings and the specific embodiments.
In a single day break down and to carry out the shortcoming of self-adaptive recovery in order to overcome code tree, the present invention proposes the self-healing method of a kind of code tree, protect the correctness of code tree.Fig. 1 is the flow chart of steps of the inventive method, and as shown in Figure 1, the method for code tree self-adaptive recovery of the present invention comprises:
Step 100: in case have the user to discharge or reshuffle and finish, judge then whether the condition of this flow startup satisfies on the current carrier frequency,, then enter step 200 as satisfying; Otherwise withdraw from;
Step 200: each the occupied channel code to each time slot code tree on the current carrier frequency travels through successively: if this channel code is common signal channel or the employed channel code of private subscribers, then be normal, continue to check next channel code; Otherwise this channel code is the false channel sign indicating number, will discharge it;
The implication of the step 100 in the method for code tree self-adaptive recovery of the present invention further specifies as follows:
1) on the current carrier frequency in case have the user to discharge or reshuffle and finish, refer to radio network controller and learn that the user discharges, or learn that it has finished the operation that channel is reshuffled.
2) condition of flow startup is by the radio network controller setting;
The implication of the step 200 in the method for code tree self-adaptive recovery of the present invention further specifies as follows:
1) the employed channel code of common signal channel refers to SCCPCH (Common Control Physical Channel), PICH (Page Indication Channel), FPACH (rapid physical Random Access Channel), PRACH (Physical Random Access Channel), HS-PDSCH (high-speed physical downlink shared channel (HS-PDSCH)), HS-SCCH (shared control channel), the HS-SICH employed channel codes of channel such as (sharing information channel).
2) the employed channel code of private subscribers had both comprised the employed channel code of the private subscribers that is in stable state, also comprised the busy channel code of transient state user that is in the reconfiguration course.
3) channel code of mistake refers to this channel code neither the channel code of common signal channel, and therefore channel code that neither private subscribers will discharge it.
As shown in Figure 2, a representative instance of the method for the code tree self-adaptive recovery that the present invention proposes may further comprise the steps:
Step 201: on the current carrier frequency in case have the user to discharge or reshuffle and finish, the beginning flow process;
Step 202: judge whether the dedicated channel number of users on the current carrier frequency is 0: if not, process ends; If, execution in step 203;
Step 203: verify counter and add 1;
Step 204: judge the counting the thresholding whether count value of counter accumulative total is provided with more than or equal to radio network controller, if more than or equal to, then go to step 205, otherwise process ends;
Step 205: each the occupied channel code to each time slot code tree on the current carrier frequency travels through successively:
Is step 206: this channel code the employed channel code of common signal channel? be execution in step 208 then, otherwise execution in step 207;
Step 207: this channel code is the false channel sign indicating number, will discharge it;
Does step 208: traversal finish? be execution in step 209 then, continue to check next channel code otherwise return step 205;
Step 209: the zero clearing counter, finish.
As seen from the above, in this example, the condition of this flow startup is: the private subscribers number is 0, and the count value of counter accumulation is greater than the counting thresholding.Such condition has not only guaranteed can the user in the communication not to be impacted, and can avoid overfrequency or very few traversing operation by the counting thresholding is set.
The example of the code tree self-adaptive recovery method that the present invention is proposed is described further below.
Fig. 3 is the code tree figure of the time slot 4 of main carrier frequency, and the channelization code set of this code tree is combined into: { 16-1,16-2,16-5,16-6,16-7,16-8,16-13,16-14}, wherein, 16-1,16-2 are the employed channel codes of FPACH, 16-5,16-6,16-7,16-8 are the employed channel codes of HS-PDSCH, and 16-13,16-14 are the false channel sign indicating numbers.No user on other time slots of main carrier frequency.It is 2 that the code tree of radio network controller setting is verified the counting thresholding.
Suppose that user A inserts, and discharges subsequently; User B inserts then, and physical channel is reshuffled to assistant carrier frequency subsequently.The described flow operations of this method is as follows:
When 1) user A discharged, flow startup: the dedicated channel number of users on the main carrier frequency was 0, and count value becomes 1.Yet, still less than counting thresholding 2, process ends;
2) user B reshuffles when assistant carrier frequency is finished, and flow startup: the dedicated channel number of users on the main carrier frequency is 0, and count value becomes 2, equals to count thresholding.So each channel code to main carrier frequency time slot 4 code trees travels through, be pair set { 16-1,16-2,16-5,16-6,16-7,16-8,16-13, each channel code among the 16-14} is checked: 16-1,16-2,16-5,16-6,16-7,16-8 are the employed channel codes of common signal channel, for normally; 16-13,16-14 can not find corresponding common signal channel, are the false channel sign indicating number, will discharge them.
As from the foregoing, by the inventive method, in case the channel code that appearance is hung unusually on the code tree, system will have the ability they are discharged, and recover the normal of code tree.
In addition, corresponding the inventive method, the present invention also provides the device of code tree self-adaptive recovery in a kind of communication system, wherein, comprising: open unit and performance element; Described unlatching unit is used for: reshuffling channel code if having the user to discharge channel code on the current carrier frequency or have the user to finish, judge then whether system satisfies preset condition, is the function of then carrying out described performance element, otherwise finishes; Described performance element is used for, check each occupied channel code of each time slot code tree on the current carrier frequency, be not the employed channel code of private subscribers if checked channel code neither is the employed channel code of common signal channel yet, then this checked channel code discharged.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the method for code tree self-adaptive recovery in the communication system is characterized in that, comprises the steps:
Step 1 is reshuffled channel code if having the user to discharge channel code on the current carrier frequency or have the user to finish, and judges then whether system satisfies preset condition, is execution in step two then, otherwise process ends;
Step 2, check each occupied channel code of each time slot code tree on the current carrier frequency, be not the employed channel code of private subscribers if checked channel code neither is the employed channel code of common signal channel yet, then this checked channel code discharged;
In described step 1, described preset condition is: judge whether the dedicated channel number of users on the current carrier frequency is zero, if not, process ends is if verify counter and add one; Judge the counting the thresholding whether count value of counter accumulative total is provided with more than or equal to system, if more than or equal to, then carry out step 2.
2. method according to claim 1 is characterized in that, in described step 1, also comprise: if the dedicated channel number of users on the current carrier frequency is zero, the count value of counter is added one, and judge the counting thresholding of the count value of counter less than setting, then process ends; And after described step 2, also comprise: counter O reset.
3. method according to claim 1 is characterized in that, the counting thresholding that described system is provided with is by the radio network controller setting.
4. according to any described method among the claim 1-3, it is characterized in that, in described step 2, carry out described inspection by the mode that travels through all channel codes successively.
5. method according to claim 4 is characterized in that, in described step 1, learns that by radio network controller the user has discharged channel code or user and finished and reshuffle channel code.
6. method according to claim 4, it is characterized in that the employed channel code of described common signal channel comprises: Common Control Physical Channel, Page Indication Channel, rapid physical Random Access Channel, Physical Random Access Channel, high-speed physical downlink shared channel (HS-PDSCH), shared control channel and the employed channel code of shared information channel.
7. method according to claim 4 is characterized in that, the employed channel code of described private subscribers comprises: the employed channel code of private subscribers and the busy channel code of transient state user that is in the reconfiguration course that are in stable state.
8. the device of code tree self-adaptive recovery in the communication system is characterized in that, comprising: open unit and performance element;
Described unlatching unit is used for: reshuffling channel code if having the user to discharge channel code on the current carrier frequency or have the user to finish, judge then whether system satisfies preset condition, is the function of then carrying out described performance element, otherwise finishes; Described preset condition is: judge whether the dedicated channel number of users on the current carrier frequency is zero, if not, process ends is if verify counter and add one; Judge the count value whether number of counter accumulative total is provided with more than or equal to radio network controller, if more than or equal to, the function of described performance element then carried out;
Described performance element is used for, check each occupied channel code of each time slot code tree on the current carrier frequency, be not the employed channel code of private subscribers if checked channel code neither is the employed channel code of common signal channel yet, then this checked channel code discharged.
9. device according to claim 8 is characterized in that, described communication system is a TDS-CDMA system.
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| CN2007101772254A CN101159480B (en) | 2007-11-12 | 2007-11-12 | Code tree self-adaptive recovery method and apparatus in communication system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332915A (en) * | 1998-11-03 | 2002-01-23 | 艾利森电话股份有限公司 | Slotted mode code usage in cellular communications system |
| CN1430356A (en) * | 2001-12-30 | 2003-07-16 | 深圳市中兴通讯股份有限公司上海第二研究所 | Channelizing code resource dynamic optimization distribution method of wideband CDMA system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332915A (en) * | 1998-11-03 | 2002-01-23 | 艾利森电话股份有限公司 | Slotted mode code usage in cellular communications system |
| CN1430356A (en) * | 2001-12-30 | 2003-07-16 | 深圳市中兴通讯股份有限公司上海第二研究所 | Channelizing code resource dynamic optimization distribution method of wideband CDMA system |
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Granted publication date: 20110420 Termination date: 20161112 |