CN101500243B - A method for selecting a bearer mode of a packet data service - Google Patents
A method for selecting a bearer mode of a packet data service Download PDFInfo
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- CN101500243B CN101500243B CN2008100575785A CN200810057578A CN101500243B CN 101500243 B CN101500243 B CN 101500243B CN 2008100575785 A CN2008100575785 A CN 2008100575785A CN 200810057578 A CN200810057578 A CN 200810057578A CN 101500243 B CN101500243 B CN 101500243B
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Abstract
本发明公开了一种分组数据业务承载方式的选择方法，包括：预先设置不同的UE状态和分组数据PS业务承载方式选择场景所对应的至少两个可选PS业务承载方式；在进行PS业务承载方式选择时，根据当前的UE状态和当前场景，确定对应的所有可选PS业务承载方式；针对确定的所有可选PS业务承载方式，逐个进行该承载方式的资源分配，直到所述可选PS业务承载方式中的一种成功完成资源分配、或者所有可选PS业务承载方式的资源分配全部失败，结束本流程。应用本发明，能够提高PS业务的接纳成功率。
The invention discloses a method for selecting a packet data service bearing mode, which includes: pre-setting at least two optional PS service bearing modes corresponding to different UE states and packet data PS service bearing mode selection scenarios; When selecting the mode, determine all the corresponding optional PS service bearing modes according to the current UE state and the current scene; for all the determined optional PS service bearing modes, perform resource allocation for the bearing mode one by one until the optional PS service bearing mode One of the service bearer modes successfully completes resource allocation, or resource allocation of all optional PS service bearer modes fails, and this process ends. By applying the present invention, the acceptance success rate of PS services can be improved.
Description
Technical field
The present invention relates to grouped data (PS) service technique, particularly a kind of bearing mode selection method of PS business.
Background technology
According to the 3GPP normalized definition, the business that mobile communications network provides can be divided into session service, interactive service, stream business, background business 4 classes.Generally be circuit type (CS) business with session class service definition, such professional up-downgoing symmetry; Interactive service, stream business, background business are defined as the PS business.
The PS business features is: sudden strong, the error rate is had relatively high expectations, delay requirement is lower, up-downgoing professional asymmetric, allocated bandwidth can be selected flexibly etc.Before carrying out the PS business, need be the suitable bearing mode of PS service selection.Particularly, need carry out the scene that PS service bearer mode selects comprises: the professional maintenance process of the access procedure of PS business and PS two big classes.Refinement ground more, the scene of PS service access process can be subdivided into: initial access process, switch or enter the process that inserts other sub-districts etc. during reorientation; The scene that the professional maintenance process of PS comprises can be subdivided into: PS traffic packets scheduling process, cell updating course, composite service remain PS business procedure etc. after discharging CS.
These characteristics according to the PS business, the mode of PS service selection carrying will be different from the CS business that only is carried on the DCH channel, can be for the bearing mode of PS service selection: DCH channel in the R4 network or FACH channel, the DCH channel in the R5 network, FACH channel or HS-DSCH channel.
Wherein, the DCH channel is a dedicated channel, if professional only selection of PS is carried on the DCH channel, consequently the receptive online user number of system is limited, and bandwidth availability ratio is low, the implementation complexity height of resource re-allocation, inefficiency.
The HS-DSCH channel is a shared channel, when distributing this channel, can additionally follow the HS-SCCH channel of allocation of downlink and up HS-SICH channel, therefore, if professional only selection of PS is carried on the HS-DSCH channel, consequently traffic carrying capacity is less, and the lower business of rate requirement is when Resources allocation, HS-SCCH channel that the meeting additional allocation is descending and up HS-SICH channel will cause the wasting of resources like this.
The FACH channel is a shared channel, its corresponding RACH channel is responsible for carrying out user's up access, therefore, if the professional only selection of PS is carried on the FACH channel, consequently throughput of system is lower, and when a plurality of users are received into the FACH channel simultaneously, can be in RACH channel generation random access collision problem etc.
Therefore, for R4, the R5 hybrid network, above-mentioned any channel bearing mode all can not satisfy the multifarious requirement of PS territory QoS of survice fully, how in these transmission channels to the bearing mode of PS service selection optimum, with the decision systems bandwidth availability ratio, whether throughput of system realizes maximization, and whether the receptive online user number of system is maximum etc.
Present PS service bearer mode system of selection specifically comprises as shown in Figure 1:
Step 102 is relatively applied for speed and FACH thresholding and HS-DSCH thresholding, if apply for speed smaller or equal to the FACH thresholding, then execution in step 103; If apply for speed more than or equal to the HS-DSCH thresholding, and be positioned at non-R4 sub-district, then execution in step 104; If application speed is less than the HS-DSCH thresholding, and greater than the FACH thresholding, perhaps greater than the HS-DSCH thresholding, and when being positioned at the R4 sub-district, then execution in step 105.
Calculate the dynamically required parameter of acquisition target bearing mode by some, such as the RAB parameter, RadioLink parameter etc. are carried out the distribution of related resource then.
If the resource allocation failure, then the PS business is set up failure at this bearing mode, does not at this moment reattempt the access of other bearing modes.
In the system of selection by above-mentioned PS service bearer mode, in PS service access process, the selection of its bearing mode compares with application speed by thresholding and makes a strategic decision, and do not consider the loading condition of present network, if the bearing mode of selecting has reached the load maximum, then this PS business is not attempted other bearing mode in this case with access failure, admits success rate lower so cause.
To the professional maintenance process of PS, before and after various scenes take place, its bearing mode does not change, promptly keep original bearing mode, do not realize making real-time adjustment according to the flow or the link-quality of business, such result does not realize system bandwidth utilance and throughput of system maximization.
In addition, in above-mentioned system of selection shown in Figure 1, the conversion of various bearing modes is dynamically to realize, and the parameter of target bearing mode also is that dynamic calculation obtains, and causes system loading bigger like this, and efficient is lower.
Summary of the invention
In view of this, the invention provides a kind of system of selection of PS service bearer mode, can improve the admittance success rate of PS business.
For achieving the above object, the present invention adopts following technical scheme:
A kind of system of selection of bearing manner of PS data service comprises:
Set in advance different UE states and grouped data PS service bearer mode and select pairing at least two the optional PS service bearer modes of scene;
Carrying out PS service bearer mode when selecting,, determine all corresponding optional PS service bearer modes according to current UE state and current scene;
At all optional PS service bearer modes of determining, carry out the resource allocation of this bearing mode one by one, process ends is all failed in a kind of resource allocation that completes successfully resource allocation or all optional PS service bearer modes in described optional PS service bearer mode.
Preferably, describedly different UE states is set and grouped data PS service bearer mode selects the pairing optional PS service bearer mode of scene to comprise:
To select scene be PS business initial access procedure and UE state when having the CS session when described PS service bearer mode, corresponding optional PS service bearer mode is set for being carried on the DCH channel and being carried on the HS-DSCH channel;
Selecting scene when described PS service bearer mode is to switch or during PS service access process during reorientation, perhaps, to select scene be PS traffic packets scheduling process or cell updating course and UE state when having the CS session when PS service bearer mode, corresponding optional PS service bearer mode is set for being carried on the DCH channel and being carried on the HS-DSCH channel;
To select scene be PS business initial access procedure and UE state when not having the CS session when described PS service bearer mode, perhaps, to select scene be PS traffic packets scheduling process or cell updating course and UE state when not having the CS session when PS service bearer mode, corresponding optional PS service bearer mode is set for being carried on the DCH channel, being carried on the FACH channel and being carried on the HS-DSCH channel;
Selecting scene when described PS service bearer mode is that residue PS business procedure and UE state were current composite service when being carried on the HS-DSCH channel after composite service discharged CS, corresponding optional PS service bearer mode is set for being carried on the HS-DSCH channel and being carried on the DCH channel;
Selecting scene when described PS service bearer mode is that residue PS business procedure and UE state were current composite service when being carried on the DCH channel after composite service discharged CS, corresponding optional PS service bearer mode is set for being carried on the DCH channel and being carried on the FACH channel.
Preferably, this method further comprises: set in advance under the different RAB Type weight factor of various PS service bearer modes;
Described at all optional PS service bearer modes of determining, the resource allocation of carrying out this bearing mode one by one comprises: according to the RAB Type of current application, determine the weight factor of described optional PS service bearer mode; The corresponding respectively present load situation of the described optional PS service bearer mode in inquiry sub-district, UE place; According to the weight factor and the present load situation of described optional PS service bearer mode, determine the priority of all optional PS service bearer modes, and, carry out the resource allocation of all optional PS service bearer modes successively according to this priority.
Preferably, in advance according to the application speed of PS business and the number of users of sub-district, the weight factor of various PS service bearer modes under the different RABType is set.
Preferably, the described setting under the different RAB Type, the weight factor of various PS service bearer modes comprises:
For the RAB Type of little speed, the weight factor minimum that the weight factor that the weight factor maximum be carried on the FACH channel is set, is carried on the DCH channel is time big, be carried on the HS-DSCH channel;
For the RAB Type of big speed, the weight factor minimum that the weight factor that the weight factor maximum be carried on the HS-DSCH channel is set, is carried on the DCH channel is time big, be carried on the FACH channel.
Preferably, according to the number of users and the bandwidth of FACH channel in the sub-district, UE place, determine to be carried on the present load situation of FACH channel correspondence;
According to the code channel number and the power of DCH channel in the sub-district, UE place, determine to be carried on the present load situation of DCH channel correspondence;
According to the number of users and the bandwidth of HS-DSCH channel in the sub-district, UE place, determine to be carried on the present load situation of HS-DSCH channel correspondence.
Preferably, described weight factor and present load situation according to optional PS service bearer mode, determine that the priority of described optional PS service bearer mode comprises: the weight factor of PS service bearer mode is big more, and the priority of this PS service bearer mode is high more; The present load of PS service bearer mode correspondence is heavy more, and the priority of this PS service bearer mode is low more.
Preferably, the described resource allocation of carrying out all optional PS service bearer modes successively comprises:
According to the wireless parameter of the various PS service bearer mode correspondences that set in advance, determine the wireless parameter of all optional PS service bearer mode correspondences, and, carry out resource allocation successively according to corresponding wireless parameter.
As seen from the above technical solution, among the present invention, set in advance different UE states and PS service bearer mode and select pairing at least two the optional PS service bearer modes of scene.Carrying out PS service bearer mode when selecting,, determine all corresponding optional PS service bearer modes according to current UE state and current scene; At all optional PS service bearer modes of determining, carry out the resource allocation of this bearing mode one by one, process ends is all failed in a kind of resource allocation that completes successfully resource allocation or all optional PS service bearer modes in optional PS service bearer mode.Like this, in advance by the static configuration data storehouse, determine a plurality of optional PS service bearer mode corresponding under the various scenes, and when selecting PS service bearer mode, directly, from database, determine all optional PS service bearer modes, and attempt carrying out resource allocation one by one according to current scene and UE state, thereby the resource allocation failure of avoiding a kind of PS service bearer mode causes the admittance failure of whole PS business, improves the admittance success rate of PS business.
Description of drawings
Fig. 1 is the system of selection flow chart of present PS service bearer mode.
Fig. 2 is the system of selection overview flow chart of PS service bearer mode among the present invention.
Fig. 3 is the system of selection particular flow sheet of PS service bearer mode among the present invention.
Embodiment
For making purpose of the present invention, technological means and advantage clearer, below in conjunction with accompanying drawing the present invention is done to describe in further detail.
Basic thought of the present invention is: under various scenes, carry out the trial of multiple PS service bearer mode, thereby avoid a kind of resource allocation failure of PS service bearer mode to cause the admittance of whole PS business to be failed.
Fig. 2 is the system of selection overview flow chart of PS service bearer mode among the present invention.As shown in Figure 2, this method comprises:
Through aforesaid way, carrying out PS service bearer mode when selecting, can carry out the trial of multiple business bearing mode, when the resource allocation of any one bearing mode success, then definite PS business admission is controlled successfully, when the resource allocation of all bearing modes was all failed, the side determined the failure of PS business admission, thereby improved the admittance success rate of PS business.
Above-mentioned being to overview of the present invention, below by specific embodiment explanation the specific embodiment of the present invention.
Fig. 3 is the system of selection particular flow sheet of PS service bearer mode among the present invention.As shown in Figure 3, this method comprises:
Step 301 according to the PS business characteristic, is carried out static configuration to various PS service bearer modes in advance, comprises the parameter of target bearing mode.
The static configuration of specifically carrying out in this step comprises: under the selection scene at different UE states and PS service bearer mode, correspondence is provided with all possible PS service bearer mode, wherein, every kind of state and select the PS service bearer mode of the corresponding setting of scene institute to be at least two kinds is called optional PS service bearer mode.The UE state can show that this UE is current and whether have CS session and PS session, and the bearing mode of corresponding session.
Below at the selection scene of all kinds of PS service bearer modes, introduce the setting of optional PS service bearer mode respectively.
At first, for PS business initial access procedure:
When the UE state when having the CS session, optional PS service bearer mode has two kinds, is respectively: be carried on the DCH channel, be carried on the HS-DSCH channel; At this moment, the PS business can not be carried on the FACH channel;
When the UE state is signaling status when (not having the CS session), optional PS service bearer mode has three kinds, is respectively: be carried on the DCH channel, be carried on the HS-DSCH channel, be carried on the FACH channel.
PS service access process during secondly, for switching or reorientation:
No matter which kind of state UE is, optional PS service bearer mode is two kinds, is respectively: be carried on the DCH channel, be carried on the HS-DSCH channel; This be because, switch or during reorientation, had the PS business, at this moment, the PS business can not be moved to the FACH channel, this is because prior protocols is not supported.
Once more, for PS traffic packets scheduling process or cell updating course:
Similar with PS business initial access procedure, when the UE state when having the CS session, optional PS service bearer mode has two kinds, is respectively: be carried on the DCH channel, be carried on the HS-DSCH channel; At this moment, the PS business can not be carried on the FACH channel;
When the UE state when not having the CS session, optional PS service bearer mode has three kinds, is respectively: be carried on the DCH channel, be carried on the HS-DSCH channel, be carried on the FACH channel.
At last, for residue PS business procedure behind the composite service release CS:
When the UE state is a current composite service when being carried on the HS-DSCH channel, optional PS service bearer mode has two kinds, is respectively: be carried on the HS-DSCH channel, be carried on the DCH channel; That is to say that behind the release CS, remaining PS can be carried on HS-DSCH channel or the DCH channel, reason is that the speed of current PS business is very high;
When the UE state is a current composite service when being carried on the DCH channel, optional PS service bearer mode has two kinds, is respectively: be carried on the DCH channel, be carried on the FACH channel; That is to say that behind the release CS, remaining PS can be carried on FACH channel or the DCH channel, reason is that the speed of current PS is not very high;
Because current composite service can not be carried on the FACH channel, so this kind situation need not be considered.
Can carry out the configuration of optional PS service bearer mode according to aforesaid way.Preferably, in database, can further dispose various PS service bearer mode corresponding parameters.Definite mode of concrete relevant parameter is identical with existing mode, just repeats no more here.
Step 302 is provided with under the different RAB Type weight factor of various PS service bearer modes.
Specifically when weight factor is set, can carry out emulation, determine according to simulation result again according to the real network situation.The parameter of concrete real network situation can be the application speed of PS business and sub-district active user's number etc.
Provide a kind of concrete weight factor set-up mode below:
For the RAB Type of little speed, the weight factor minimum that the weight factor that the weight factor maximum be carried on the FACH channel is set, is carried on the DCH channel is time big, be carried on the HS-DSCH channel;
For the RAB Type of big speed, the weight factor minimum that the weight factor that the weight factor maximum be carried on the HS-DSCH channel is set, is carried on the DCH channel is time big, be carried on the FACH channel.
For convenience of description, the method for expressing of RAB Type under various bearing modes is as follows:
The weight factor of RAB Type under the FACH bearing mode is expressed as: α
f
The weight factor of RAB Type under the DCH bearing mode is expressed as: α
D
The weight factor of RAB Type under the HS-DSCH bearing mode is expressed as: α
H, α wherein
F+ α
D+ α
H=1.
Step 303 carrying out PS service bearer mode when selecting, according to current UE state and current scene, is determined all corresponding optional PS service bearer modes.
Particularly, current UE state and current scene input database are inquired about, determined all corresponding optional PS service bearer modes.
Step 304 according to the RAB Type of current application, is determined the weight factor of described optional PS service bearer mode.
In this step,, determine the weight factor of various optional PS service bearer modes according to the various RAB Type that are provided with in the step 302.
In this step, the load of certain bearing mode correspondence is big more, then admit the priority of this PS business more little, the load of certain bearing mode correspondence is more little, then admit the priority of this PS business big more, if the load of certain bearing mode correspondence has reached maximum, then this bearing mode can not be admitted the PS business.
For convenience of description, use following method for expressing to represent cell load:
The loading liquifier of respective cell under the FACH bearing mode is shown: L
F(0≤L
F≤ 1);
The loading liquifier of respective cell under the DCH bearing mode is shown: L
D(0≤L
D≤ 1);
The loading liquifier of respective cell under the HS-DSCH bearing mode is shown: L
H(0≤L
H≤ 1).
Step 306 according to the weight factor and the present load situation of optional PS service bearer mode, is determined the priority of all optional PS service bearer modes.
Obtain the priority factors of this PS business under various bearing modes according to RAB Type in weight factor under the various bearing modes and respective cell loading condition:
The PS service bearer is at the priority factors of FACH channel: P
F=α
F* (1-L
f);
The PS service bearer is at the priority factors of DCH channel: P
D=α
D* (1-L
D);
The PS service bearer is at the priority factors of HS-DSCH channel: P
H=α
H* (1-L
H);
The priority factors P of more various bearing modes
F, P
DAnd P
H, priority factors is big more, then selects the priority of this bearing mode high more.If priority factors is 0, just then corresponding bearing mode is filtered, such as under the effective situation of assurance speed, the priority factors of FACH bearing mode need be made as 0.
Step 307 according to the priority of determining in the step 306, is attempted the resource allocation of each optional PS service bearer mode successively, judges whether resource allocation is successful, if, then judge and admit successfully, process ends, otherwise, execution in step 308.
In this step, when carrying out resource allocation,, carry out described resource allocation according to the various PS service bearer mode corresponding parameters that dispose in the database.The mode of specifically carrying out resource allocation is identical with existing mode, just repeats no more here.
Step 308 is checked the trial whether all optional PS service bearers have all carried out resource allocation, if, then determine to admit failure, process ends, otherwise return step 307.
Cycling by above-mentioned steps 307～308, priority according to all optional PS service bearer modes, carry out the trial of resource allocation, process ends is all failed in the resource allocation that completes successfully resource allocation or all optional PS service bearer modes up to wherein a kind of bearing mode.
By the embodiment of the invention described above as seen, among the present invention, at first, static configuration has been carried out in the conversion of various bearing modes, comprised that the parameter of target bearing mode is also carried out static configuration, thereby form a configuration database according to the PS business characteristic.Certain scene a situation arises down, but by import some querying conditions just quick search comprise relevant parameter to the possible situation of the institute of target bearing mode, utilize the present invention to shorten the admittance time of PS business greatly.Secondly, when the PS business is admitted control, be to take all factors into consideration PS traffic performance and the various carry load situations of the current area priority factors of making a strategic decision, effectively improve and admit success rate.At last, under certain bearing mode overload situations of sub-district, utilize the present invention the PS service bearer of new access under other bearing mode, to have improved the admittance success rate.
Being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the system of selection of a bearing manner of PS data service is characterized in that, this method comprises:
Set in advance different UE states and grouped data PS service bearer mode and select pairing at least two the optional PS service bearer modes of scene;
Carrying out PS service bearer mode when selecting,, determine all corresponding optional PS service bearer modes according to current UE state and current scene;
At all optional PS service bearer modes of determining, carry out the resource allocation of this bearing mode one by one, process ends is all failed in a kind of resource allocation that completes successfully resource allocation or all optional PS service bearer modes in described optional PS service bearer mode;
Wherein, to select scene be PS business initial access procedure and UE state when having Circuit Service CS session when described PS service bearer mode, corresponding optional PS service bearer mode is set for being carried on the DCH channel and being carried on the HS-DSCH channel;
Selecting scene when described PS service bearer mode is to switch or during PS service access process during reorientation, perhaps, to select scene be PS traffic packets scheduling process or cell updating course and UE state when having the CS session when PS service bearer mode, corresponding optional PS service bearer mode is set for being carried on the DCH channel and being carried on the HS-DSCH channel;
To select scene be PS business initial access procedure and UE state when not having the CS session when described PS service bearer mode, perhaps, to select scene be PS traffic packets scheduling process or cell updating course and UE state when not having the CS session when PS service bearer mode, corresponding optional PS service bearer mode is set for being carried on the DCH channel, being carried on the FACH channel and being carried on the HS-DSCH channel;
Selecting scene when described PS service bearer mode is that residue PS business procedure and UE state were current composite service when being carried on the HS-DSCH channel after composite service discharged CS, corresponding optional PS service bearer mode is set for being carried on the HS-DSCH channel and being carried on the DCH channel;
Selecting scene when described PS service bearer mode is that residue PS business procedure and UE state were current composite service when being carried on the DCH channel after composite service discharged CS, corresponding optional PS service bearer mode is set for being carried on the DCH channel and being carried on the FACH channel.
2. method according to claim 1 is characterized in that, this method further comprises: set in advance under the different RAB type RAB Type weight factor of various PS service bearer modes;
Described at all optional PS service bearer modes of determining, the resource allocation of carrying out this bearing mode one by one comprises: according to the RAB Type of current application, determine the weight factor of described optional PS service bearer mode; The corresponding respectively present load situation of the described optional PS service bearer mode in inquiry sub-district, UE place; According to the weight factor and the present load situation of described optional PS service bearer mode, determine the priority of all optional PS service bearer modes, and, carry out the resource allocation of all optional PS service bearer modes successively according to this priority.
3. method according to claim 2 is characterized in that, in advance according to the application speed of PS business and the number of users of sub-district, the weight factor of various PS service bearer modes under the different RAB Type is set.
4. method according to claim 3 is characterized in that, the described setting under the different RAB Type, and the weight factor of various PS service bearer modes comprises:
For the RAB Type of little speed, the weight factor minimum that the weight factor that the weight factor maximum be carried on the FACH channel is set, is carried on the DCH channel is time big, be carried on the HS-DSCH channel;
For the RAB Type of big speed, the weight factor minimum that the weight factor that the weight factor maximum be carried on the HS-DSCH channel is set, is carried on the DCH channel is time big, be carried on the FACH channel.
5. method according to claim 2 is characterized in that, according to the number of users and the bandwidth of FACH channel in the sub-district, UE place, determines to be carried on the present load situation of FACH channel correspondence;
According to the code channel number and the power of DCH channel in the sub-district, UE place, determine to be carried on the present load situation of DCH channel correspondence;
According to the number of users and the bandwidth of HS-DSCH channel in the sub-district, UE place, determine to be carried on the present load situation of HS-DSCH channel correspondence.
6. method according to claim 2, it is characterized in that, described weight factor and present load situation according to optional PS service bearer mode, the priority of determining described optional PS service bearer mode comprises: the weight factor of PS service bearer mode is big more, and the priority of this PS service bearer mode is high more; The present load of PS service bearer mode correspondence is heavy more, and the priority of this PS service bearer mode is low more.
7. method according to claim 2 is characterized in that, the described resource allocation of carrying out all optional PS service bearer modes successively comprises:
According to the wireless parameter of the various PS service bearer mode correspondences that set in advance, determine the wireless parameter of all optional PS service bearer mode correspondences, and, carry out resource allocation successively according to corresponding wireless parameter.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620048A (en) * | 2003-11-19 | 2005-05-25 | 华为技术有限公司 | Selection method of gateway sapporting node in universal pocket wireless business |
| CN1780426A (en) * | 2004-11-19 | 2006-05-31 | 大唐移动通信设备有限公司 | A Proportional Fair Scheduling Method for Base Stations to Select Serving Terminals |
| CN101098294A (en) * | 2006-06-26 | 2008-01-02 | 大唐移动通信设备有限公司 | Carrier distribution method and apparatus for high speed downlink packet access technology |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620048A (en) * | 2003-11-19 | 2005-05-25 | 华为技术有限公司 | Selection method of gateway sapporting node in universal pocket wireless business |
| CN1780426A (en) * | 2004-11-19 | 2006-05-31 | 大唐移动通信设备有限公司 | A Proportional Fair Scheduling Method for Base Stations to Select Serving Terminals |
| CN101098294A (en) * | 2006-06-26 | 2008-01-02 | 大唐移动通信设备有限公司 | Carrier distribution method and apparatus for high speed downlink packet access technology |
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