CN100391157C - Network resource management method and device - Google Patents
Network resource management method and device Download PDFInfo
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- CN100391157C CN100391157C CNB2004100423996A CN200410042399A CN100391157C CN 100391157 C CN100391157 C CN 100391157C CN B2004100423996 A CNB2004100423996 A CN B2004100423996A CN 200410042399 A CN200410042399 A CN 200410042399A CN 100391157 C CN100391157 C CN 100391157C
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Abstract
The present invention discloses a network resource management method and a device thereof. The network resource management method comprises the steps of resource management module management, a logic network resource distribution, physical distribution of a bottom layer module, checking, recovery and response. Correspondingly, the network resource management device of the present invention comprises a resource management module, the bottom layer module, a checking unit, a recovery unit and a response unit. The network resource management method and the device of the present invention can cause network resource information logically distributed by the resource management module to be coincident with network resource information physically distributed by the bottom layer module.
Description
Technical field
The present invention relates to a kind of method for managing resource and device, refer to a kind of method for managing network resource and device especially.
Background technology
Along with the development of technology such as computer, the network and communications, be that the various systems and the service of carrier is that human being's production and life provide a great convenience with computer and network, meanwhile the problem of management of computer and Internet resources also just day shows outstanding.Such as, at field of telecommunications, some telecommunications operators adopt Wideband Code Division Multiple Access (WCDMA) to insert (WCDMA in its telecom operation system, Wideband Code DivisionMultiple Access) technology, along with the WCDMA The Application of Technology, also just from strength to strength, the network resource management of inside of base station is also increasingly sophisticated for the function of base station.
Usually, at an inside of base station, all bottom layer node of base station are divided in groups, each group comes actual physics to distribute the channel resource of the bottom layer node in this group by a bottom module, as shown in Figure 1, in this example, there are four bottom layer node the base station--first bottom layer node 1, second bottom layer node 2, the 3rd bottom layer node 3 and the 4th bottom layer node 4, and promptly the first bottom module, 5 actual physics distribute the channel resource of first bottom layer node 1 and second bottom layer node 2; The second bottom module, 6 actual physics distribute the channel resource of the 3rd bottom layer node 3 and the 4th bottom layer node 4; Resource management module 7 management and assignment of logical channel resources.When professional log on resource, resource management module 7 is the traffic assignments channel resource, and it is issued the first bottom module 5 or the second bottom module 6 for the channel resource information of traffic assignments, carrying out actual physics by the first bottom module 5 or the second bottom module 6 distributes, even should the actual allotted channel resource of occupying of business, will discharge its shared channel resource after this business stops, resource management module 7 just logic reclaims the channel resource of this business release and notifies the first bottom module 5 or the second bottom module, 6 actual physics recovery channel resource.
Under normal circumstances, it is consistent that the first bottom module 5 gets channel resource with the channel resource that the second bottom module, 6 actual physics distribute with resource management module 7 assignment of logical, as, the first bottom module, 5 physical allocation first bottom layer node 1 and second bottom layer node 2 channel resource 60%, then remaining available resource is 40%; The second bottom module, 6 physical allocation the 3rd bottom layer node 3 and the 4th bottom layer node 4 channel resource 60%, then available resources are 40%; The remaining available resource of the first bottom module of putting down in writing at resource management module 7 places 5 is the remaining available resource 40% of the 40% and second bottom module 6.
Yet in some cases, reasons such as the flow such as channel is excessive, transmission abnormality can cause the inconsistent phenomenon of the channel resource of assignment of logical and the channel resource of actual allocated (channel resources of the resource management module 7 and the first bottom module 5 and 6 records of the second bottom module).For example resource management module 7 has reclaimed the channel resource of certain professional its first bottom layer node 1 that takies that discharges, change the remaining available resource of the first bottom module 5 of its record into 50% from 40%, and notify the first bottom module, 5 physics to reclaim this channel resource of first bottom layer node 1, the first bottom module 5 does not receive the notice of resource management module 7, so the first bottom module 5 not physics reclaims described channel resource, this has just caused the assignment of logical and the inconsistent phenomenon of physical allocation of channel resource.If do not take suitable measure, can cause described channel resource can't continue to use, reduced the actual capacity of first bottom layer node 1, also may cause system crash in the time of serious.
The reliability that improves the bottom data transmission, the technology such as length that increase message queue are adopted in more existing base stations, promptly improve the data-handling capacity of base station itself, prevent because message queue overflows the phenomenon that causes information drop-out.Though these methods are logically feasible, the message queue that can extend infinitely longways is can the message queue that in fact will extend infinitely longways is impossible, so prior art can't fundamentally solve the inconsistency of channel resource physical allocation and assignment of logical.
Summary of the invention
The problem to be solved in the present invention provides and a kind ofly can make the Internet resources assignment of logical method for managing network resource consistent with physical allocation.
In order to address the above problem, method for managing network resource of the present invention comprises management of step resource management module and assignment of logical Internet resources, bottom module physical allocation resource;
The check and correction step, obtain the network resource information of described resource management module assignment of logical and with the network resource information check and correction of itself and described bottom module physical allocation, the check and correction step may further comprise the steps: obtaining step, resource management module send the internal auditing request message of the network resource information that includes the resource management module assignment of logical to the bottom module; Comparison step, the bottom module compares according to the resource information of the assignment of logical of the transmission of the resource management module in the internal auditing request message and the resource information of its physical allocation;
The network resource information of physical allocation is arranged if there is no assignment of logical, then carry out recycling step, promptly reclaim no assignment of logical and the Internet resources of physical allocation are arranged;
There is not the network resource information that physics distributes if having assignment of logical, then carry out response of step, being described bottom module sends the internal auditing response message that includes assignment of logical and do not have the network resource information that physics distributes to described resource management module, by described resource management module according to actual conditions again to its assignment of logical or cancellation assignment of logical.
Further, described method for managing network resource also comprises regularly step, and setting-up time or frequency regularly or with certain frequency repeat described obtaining step.
Further, described method for managing network resource also comprises determining step, and described resource management module is judged the Resource Allocation in Networks failure of described bottom module, and failure cause is Internet resources when not enough, carries out described obtaining step.
Further, described method for managing network resource also comprises the request forwarding step, described bottom module is judged when there is the Internet resources conflict in the Internet resources of resource management module assignment of logical, then send internal auditing request Indication message to described resource management module, described obtaining step is carried out in request.
Correspondingly, management equipment, network resource management equipment of the present invention comprises:
Be used to manage with the resource management module of assignment of logical resource and be used for the bottom module of physical allocation resource;
The check and correction unit, be independent of resource management module and bottom module, perhaps be arranged in the bottom module, be used to obtain resource management module assignment of logical network resource information and with the network resource information check and correction of the physical allocation of itself and bottom module, the check and correction unit comprises: acquiring unit is used to receive the internal auditing request message of the network resource information that comprises the resource management module assignment of logical that resource management module sends; Comparing unit, the network resource information of the assignment of logical that sends according to the resource management module in the internal auditing request message and the network resource information of bottom module physical allocation compare;
Reclaim the unit, be arranged in the bottom module, the network resource information that physical allocation is arranged if be used for having no assignment of logical, then the physics no assignment of logical of recovery and the network resource information of physical allocation is arranged;
Response unit, be arranged in the bottom module, there is not the network resource information that physics distributes if be used for having assignment of logical, then send the internal auditing response message include assignment of logical and not have the network resource information that physics distributes, by resource management module according to actual conditions assignment of logical again or cancellation assignment of logical.
Further, described management equipment, network resource management equipment also comprises timing unit, be used for setting-up time or frequency, regularly or with certain frequency trigger resource management module sends internal auditing request message from the network resource information that comprises the resource management module assignment of logical to the bottom module.
Further, described management equipment, network resource management equipment also comprises judging unit, be used to judge when the Resource Allocation in Networks failure of bottom module and former because Internet resources are not enough, trigger resource management module sends internal auditing request message from the network resource information that comprises the resource management module assignment of logical to the bottom module.
Further, described management equipment, network resource management equipment also comprises request transmitting unit, when there is the Internet resources conflict in the Internet resources that are used to judge the resource management module assignment of logical, then send internal auditing request Indication message, trigger resource management module sends internal auditing request message from the network resource information that comprises the resource management module assignment of logical to the bottom module to resource management module.
Compared with prior art, the beneficial effect of method for managing network resource of the present invention and device:
Because in the technical scheme of method for managing network resource of the present invention and device, comprise the network resource information that can obtain the resource management module assignment of logical and the network resource information of itself and bottom module physical allocation is compared, can obtain the network resource information of resource management module assignment of logical and the inconsistent situation of network resource information of bottom module physical allocation like this.Described inconsistent situation has two kinds, and a kind of is no assignment of logical and the Internet resources of physical allocation, another kind of situation are arranged is assignment of logical is arranged and not have the Internet resources that physics distributes.For the previous case, the step or the unit that comprise recyclable its physical allocation in the technical scheme of method for managing network resource of the present invention and device can make because the inconsistent situation of the network resource information of the network resource information of the resource management module assignment of logical that this situation causes and bottom module physical allocation is eliminated; For latter event, comprise in the technical scheme of method for managing network resource of the present invention and device that step or unit are that the bottom module includes the internal auditing response message that assignment of logical does not have the network resource information of physics distribution to the resource management module transmission,, can make like this according to actual conditions assignment of logical again or cancellation assignment of logical by resource management module because the inconsistent situation of the network resource information of the network resource information of the resource management module assignment of logical that this situation causes and bottom module physical allocation is eliminated.Thereby can make the network resource information of resource management module assignment of logical consistent with the network resource information of bottom module physical allocation.
Further, method for managing network resource of the present invention and device also comprise regularly step or timing unit, can regularly or with certain frequency re-execute described obtaining step or trigger described acquiring unit, can find inconsistent situation as early as possible, handle as early as possible.
Further, method for managing network resource of the present invention and device also comprise determining step or judging unit, resource management module is judged when the Resource Allocation in Networks failure of bottom module and former because Internet resources are not enough, carry out described obtaining step or trigger acquiring unit, Resource Allocation in Networks failure and former because Internet resources appear when not enough when the bottom module like this, can in time learn, in time handle.
Further, method for managing network resource of the present invention and device also comprise request forwarding step or request transmitting unit, the bottom module is judged when there is the Internet resources conflict in the Internet resources of resource management module assignment of logical, then send internal auditing request Indication message to resource management module, request is carried out described obtaining step or is triggered acquiring unit, when there is the Internet resources conflict in the Internet resources of resource management module assignment of logical, can in time learn like this, in time handle.
Description of drawings
Fig. 1 is the simple knot composition of base station network resource management;
Fig. 2 is the basic flow sheet of method for managing network resource of the present invention.
Embodiment
As shown in Figure 2, method for managing network resource of the present invention by resource management module 7 management and assignment of logical Internet resources, by the first bottom module 5 and the second bottom module, 6 physical allocation Internet resources, may further comprise the steps:
Check and correction step 10, obtain resource management module 7 assignment of logical network resource information and its network resource information with the physical allocation of the first bottom module 5 and/or the second bottom module 6 proofreaded;
The network resource information of physical allocation is arranged if there is no assignment of logical, then carry out recycling step 20, promptly reclaim no assignment of logical and the Internet resources of physical allocation are arranged;
The network resource information that physical allocation is arranged if there is no assignment of logical, then carry out response of step 30, promptly the first bottom module 5 or the second bottom module 6 send the internal auditing response message that includes assignment of logical and do not have the network resource information that physics distributes to resource management module 7, by resource management module 7 according to actual conditions assignment of logical again or cancellation assignment of logical.
Further, described check and correction step 10 further may further comprise the steps:
Obtaining step 11, resource management module 7 send the internal auditing request message of the network resource information that comprises resource management module 7 assignment of logical to the first bottom module 5 and/or the second bottom module 6;
Further, method for managing network resource of the present invention also comprises regularly step 40, and setting-up time or frequency regularly or with certain frequency repeat described obtaining step 11.
Further, method for managing network resource of the present invention also comprises determining step 50, and resource management module 7 is judged when the Resource Allocation in Networks failure of the first bottom modules 5 and/or the second bottom module 6 and former because Internet resources are not enough, carried out described obtaining step 11.
Further, method for managing network resource of the present invention also comprises request forwarding step 60, the bottom module is judged when there is the Internet resources conflict in the Internet resources of resource management module 7 assignment of logical, then send internal auditing request Indication message to resource management module 7, described obtaining step 11 is carried out in request.
Be that example describes with the inside of base station channel resource management in the telecommunication system below, as shown in Figure 1, there are four bottom layer node this routine base station--first bottom layer node 1, second bottom layer node 2, the 3rd bottom layer node 3 and the 4th bottom layer node 4, the first bottom module, 5 actual physics distribute the channel resource of first bottom layer node 1 and second bottom layer node 2, the second bottom module, 6 actual physics distribute the channel resource of the 3rd bottom layer node 3 and the 4th bottom layer node 4, resource management module 7 management and assignment of logical channel resources.Behind initiation of services, resource management module 7 is the traffic assignments channel resource, and it is issued the first bottom module 5 or the second bottom module 6 for the channel resource information of traffic assignments, carrying out actual physics by the first bottom module 5 or the second bottom module 6 distributes, even should the actual allotted channel resource of occupying of business, will discharge its shared channel resource after this business stops, resource management module 7 just logic reclaims the channel resource of this business release and notifies the first bottom module 5 or the second bottom module, 6 actual physics recovery channel resource.
The step that the channel resource of this base station is managed is as follows:
At first, obtaining step 11, resource management module 7 sends the internal auditing request message of the channel resource information that comprises resource management module 7 assignment of logical to the first bottom module 5 and/or the second bottom module 6, and described internal auditing request message is as shown in the table:
| Title | Type and scope | Length (byte) | Semantic description |
| Message?Type | ?ID_INNER_AUDIT_REQUES ? |
2 | Message identifier |
| PId | ?Integer(1..2^32-1) | 4 | CPU software process number |
| TotalChannelNu m | ?Integer(1..MAXCHANNEL) | 2 | The total number of channel in the resource |
| ChannelId[MA XCHANNEL] | 2 | Channel number, not enough whole 0xFFFF that fill out |
Wherein,
Message identifier (Message Type) is used to represent the type of message;
Resource number (TotalChannelNum) is used for the quantity of the channel resource that presentation logic distributes;
Resource information (ChannelId) is used to represent channel number;
Process identification (PID) (PId) is used to represent the process number of cpu process.
After getting access to the channel resource information of resource management module 7 assignment of logical, compare step 12, promptly the first bottom module 5 and/or the second bottom module 6 compare according to the channel resource information of the digital section of the resource in the internal auditing request message and resource information field and the first bottom module 5 and/or the second bottom module, 6 physical allocation.
If the channel resource of some resource management module 7 assignment of logical has been recovered the first bottom module 5 and/or the second bottom module 6 not physics reclaim this channel resource, then carry out recycling step 20, with these channel resource deletions of not reclaimed by physics, promptly physics reclaims these channel resources; If some channel resource is the described first bottom module 5 and/or the second bottom module 6 these channel resources of physical allocation not by resource management module 7 assignment of logical, then carry out response of step 30, the first bottom module 5 and/or the second bottom module 6 send the internal auditing response message that comprises these channel resource information to resource management module 7, by resource management module 7 according to actual conditions assignment of logical again or cancellation assignment of logical.
Described internal auditing response message such as following table:
| Title | Type and scope | Length (byte) | Semantic description |
| Message?Type | ?ID_INNER_AUDIT_ ?RESPONSE | ?2 | Message identifier |
| PId | ?Integer(1..2^32-1) | 4 | Process PID, directly backfill |
| TotalChannelNum | ?Integer(1..MAXCHANNEL) | 2 | The total number of channel |
| ChannelId[MAXC HANNEL] | 2 | Channel number, not enough whole 0xFFFF that fill out |
Wherein,
Message identifier (Message Type) is used to represent the type of message, and this example is the internal auditing corresponding message;
Resource number (TotalChannelNum) is used to represent assignment of logical is arranged and does not have the quantity of the channel resource that physics distributes;
Resource information (ChannelID) is used to represent channel number;
Process identification (PID) (PId) is used to represent the process number of cpu process.
Further, as shown in Figure 2, method for managing network resource of the present invention also comprises regularly step 40, and setting-up time or frequency regularly or with certain frequency repeat described obtaining step 11 (prior art does not describe in detail).
Further, as shown in Figure 2, method for managing network resource of the present invention also comprises determining step 50, after resource management module 7 receives that the channel of the first bottom module 5 and/or 6 transmissions of the second bottom module is set up failure response message in this example, judge that failure cause is the Internet resources deficiencies, then carry out obtaining step 11, promptly send the internal auditing request message.
Further, as shown in Figure 2, method for managing network resource of the present invention also comprises request forwarding step 60, the first bottom module 5 and/or the second bottom module 6 are judged when there is the Internet resources conflict in the Internet resources of resource management module 7 assignment of logical, then send internal auditing request Indication message to resource management module 7, obtaining step 11 is carried out in request.
Described internal auditing request Indication message is as shown in the table:
| Title | Type and scope | Length (byte) | Semantic description |
| Message | ?ID_ | 2 | Message identifier |
| Type | INNER_AUDIT_REQUIRED_I NDICATION | ||
| PId | Integer(1..2^32-1) | 4 | Process PID fills out 0xFFFFFFFF |
| Cause | Integer(0..65535) | 2 | Initiate the reason of audit request |
Wherein,
Message identifier (Message Type) is used to represent the type of message;
Process identification (PID) (PId), expression cpu process number;
Reason (Cause), expression sends the reason of internal auditing request indication.
Further, resource management module 7 also should be carried out obtaining step 11 immediately after system's (not marking) breaks down and causes reconstruction of part common channel resources or generation masterslave switchover, promptly send the internal auditing request message.
Correspondingly, management equipment, network resource management equipment of the present invention, by resource management module 7 management and assignment of logical Internet resources, by the first bottom module 5 and/or the second bottom module, 6 physical allocation Internet resources, this device comprises:
The check and correction unit, be used to obtain resource management module 7 assignment of logical network resource information and its network resource information with the physical allocation of the first bottom module 5 and/or the second bottom module 6 proofreaded;
Reclaim the unit, the network resource information that physical allocation is arranged if be used for having no assignment of logical, the physics no assignment of logical of recovery and the network resource information of physical allocation is arranged;
Response unit, there is not the network resource information that physics distributes if be used for having assignment of logical, then send the internal auditing response message include assignment of logical and not have the network resource information that physics distributes, by resource management module 7 according to actual conditions assignment of logical again or cancellation assignment of logical.
Further, described check and correction unit further comprises:
Acquiring unit is used to receive the internal auditing request message of the network resource information that comprises resource management module 7 assignment of logical that resource management module 7 sends;
Comparing unit, the network resource information of the assignment of logical that sends according to the resource management module in the internal auditing request message 7 and the network resource information of the first bottom module 5 and/or the second bottom module, 6 physical allocation compare.
Further, management equipment, network resource management equipment of the present invention also comprises timing unit, be used for setting-up time or frequency, regularly or with certain frequency trigger described resource management module sends internal auditing request message from the network resource information that comprises the resource management module assignment of logical to the bottom module.
Further, management equipment, network resource management equipment of the present invention also comprises judging unit, be used to judge when the Resource Allocation in Networks failure of bottom module and former because Internet resources are not enough, trigger resource management module sends internal auditing request message from the network resource information that comprises the resource management module assignment of logical to the bottom module.
Further, management equipment, network resource management equipment of the present invention also comprises request transmitting unit, when there is the Internet resources conflict in the Internet resources that are used to judge resource management module 7 assignment of logical, then send internal auditing request Indication message, trigger resource management module sends internal auditing request message from the network resource information that comprises the resource management module assignment of logical to the bottom module to resource management module 7.
The above only is the description to the preferred implementation of method for managing network resource of the present invention and equipment; should be understood 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 (8)
1. a method for managing network resource comprises management of step resource management module and assignment of logical Internet resources, and bottom module physical allocation resource is characterized in that, and is further comprising the steps of:
The check and correction step, obtain the network resource information of described resource management module assignment of logical and with the network resource information check and correction of itself and described bottom module physical allocation, the check and correction step may further comprise the steps: obtaining step, resource management module send the internal auditing request message of the network resource information that includes the resource management module assignment of logical to the bottom module; Comparison step, the bottom module compares according to the resource information of the assignment of logical of the transmission of the resource management module in the internal auditing request message and the resource information of its physical allocation;
The network resource information of physical allocation is arranged if there is no assignment of logical, then carry out recycling step, promptly reclaim no assignment of logical and the Internet resources of physical allocation are arranged;
There is not the network resource information that physics distributes if having assignment of logical, then carry out response of step, being described bottom module sends the internal auditing response message that includes assignment of logical and do not have the network resource information that physics distributes to described resource management module, by described resource management module according to actual conditions again to its assignment of logical or cancellation assignment of logical.
2. method for managing network resource as claimed in claim 1 is characterized in that, described method for managing network resource also comprises regularly step, and setting-up time or frequency regularly or with certain frequency repeat described obtaining step.
3. method for managing network resource as claimed in claim 1, it is characterized in that described method for managing network resource also comprises determining step, described resource management module is judged the Resource Allocation in Networks failure of described bottom module, and when failure cause is the Internet resources deficiency, carry out described obtaining step.
4. method for managing network resource as claimed in claim 1, it is characterized in that, described method for managing network resource also comprises the request forwarding step, described bottom module is judged when there is the Internet resources conflict in the Internet resources of resource management module assignment of logical, then send internal auditing request Indication message to described resource management module, described obtaining step is carried out in request.
5. management equipment, network resource management equipment comprises being used to manage with the resource management module of assignment of logical resource and being used for the bottom module of physical allocation resource, it is characterized in that this device also comprises:
The check and correction unit, be independent of resource management module and bottom module, perhaps be arranged in the bottom module, be used to obtain resource management module assignment of logical network resource information and with the network resource information check and correction of the physical allocation of itself and bottom module, the check and correction unit comprises: acquiring unit is used to receive the internal auditing request message of the network resource information that comprises the resource management module assignment of logical that resource management module sends; Comparing unit, the network resource information of the assignment of logical that sends according to the resource management module in the internal auditing request message and the network resource information of bottom module physical allocation compare;
Reclaim the unit, be arranged in the bottom module, the network resource information that physical allocation is arranged if be used for having no assignment of logical, then the physics no assignment of logical of recovery and the network resource information of physical allocation is arranged;
Response unit, be arranged in the bottom module, there is not the network resource information that physics distributes if be used for having assignment of logical, then send the internal auditing response message include assignment of logical and not have the network resource information that physics distributes, by resource management module according to actual conditions assignment of logical again or cancellation assignment of logical.
6. management equipment, network resource management equipment as claimed in claim 5, it is characterized in that, described management equipment, network resource management equipment also comprises timing unit, be used for setting-up time or frequency, regularly or with certain frequency trigger resource management module sends internal auditing request message from the network resource information that comprises the resource management module assignment of logical to the bottom module.
7. management equipment, network resource management equipment as claimed in claim 5, it is characterized in that, described management equipment, network resource management equipment also comprises judging unit, be used to judge when the Resource Allocation in Networks failure of bottom module and former because Internet resources are not enough, trigger resource management module sends internal auditing request message from the network resource information that comprises the resource management module assignment of logical to the bottom module.
8. management equipment, network resource management equipment as claimed in claim 5, it is characterized in that, described management equipment, network resource management equipment also comprises request transmitting unit, when there is the Internet resources conflict in the Internet resources that are used to judge the resource management module assignment of logical, then send internal auditing request Indication message, trigger resource management module sends internal auditing request message from the network resource information that comprises the resource management module assignment of logical to the bottom module to resource management module.
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| CN101426193B (en) * | 2007-11-01 | 2011-01-12 | 华为技术有限公司 | Network resource information management method, communication apparatus and communication system |
| CN104935461B (en) * | 2015-05-29 | 2019-03-05 | 南京邮电大学 | Method for managing network resource and system in multi-network environment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1244999A (en) * | 1996-11-12 | 2000-02-16 | 艾利森电话股份有限公司 | Channel resource management within a digital mobile communication network |
| GB2344963A (en) * | 1998-12-17 | 2000-06-21 | Northern Telecom Ltd | Object-oriented network management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1244999A (en) * | 1996-11-12 | 2000-02-16 | 艾利森电话股份有限公司 | Channel resource management within a digital mobile communication network |
| GB2344963A (en) * | 1998-12-17 | 2000-06-21 | Northern Telecom Ltd | Object-oriented network management system |
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