CN101325811B - Method for distributing high speed down share channel - Google Patents
Method for distributing high speed down share channel Download PDFInfo
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- CN101325811B CN101325811B CN2008101279401A CN200810127940A CN101325811B CN 101325811 B CN101325811 B CN 101325811B CN 2008101279401 A CN2008101279401 A CN 2008101279401A CN 200810127940 A CN200810127940 A CN 200810127940A CN 101325811 B CN101325811 B CN 101325811B
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Abstract
The invention discloses a high-speed downlink shared channel distribution method, comprising the following steps: 1) obtaining the user request, determining that the prior distributed channel type is the high-speed downlink shared channel; 2) determining that the current area accessed by the user does not support high-speed downlink packet access service or has no enough high-speed downlink packet access service resources; 3) determining a pilot frequency area which has the coverage range equal to or bigger than the current area and supports the high-speed downlink packet access service; 4) determining that the pilot frequency area has enough high-speed downlink packet access service source; 5) switching the user into the pilot frequency area in step 4), newly accessing to the pilot frequency area, and obtaining high-speed downlink shared channel distribution. When the current area does not support high-speed downlink packet access service or has no enough high-speed downlink packet access service resources, the method of the invention directly switches the user into the pilot frequency area meeting the condition, thereby improving the performance of the system, and improving the capacity and the service quality of the system.
Description
Technical field
The present invention relates to WCDMA system high speed downlink grouped and insert (HSDPA, High SpeedDownlink Packet Access), refer to a kind of high speed descending sharing channel (HS-PDSCH) distribution method especially.
Background technology
The full name of HSDPA is that high speed downlink packet inserts (High Speed Downlink PacketAccess), it is the key property of WCDMA technology the 5th version, series of key techniques such as fast dispatch by adaptive modulation and coding (AMC), mixing re-transmission (HARQ) and base station have realized descending high speed data transfer.
In the WCDMA system, the introducing of HSDPA has increased by three kinds of channels, be respectively the high speed descending sharing channel (HS-PDSCH) in downlink transmission data information, HS-SCCH (High-Speed Shared Control Channel) channel of transmission Downlink Control Information, and HS-DPCCH (High-Speed Dedicated Physical Control Channel) channel of transmission uplink feedback information.
Please refer to shown in Figure 1ly, a plurality of users in the sub-district share all resources of HSDPA.The operable HS-PDSCH channel in sub-district can reach 15 at most, and the spreading factor of the channel code that each channel uses is fixed as 16.The channel of these carrying data can reasonably be distributed to each user dynamically according to user's data transmission demand and residing channel circumstance, and synchronization also can be distributed to a plurality of users to resource according to certain ratio.By using certain dispatching algorithm, system can also distribute more HS-PDSCH channel for the good user of channel circumstance, so just can further improve the capacity of system.And for dedicated channel, system is necessary for each user and distributes fixing resource, when certain user does not have transfer of data, distributes to this user's resource and can not be used by other user, thereby cause the waste of resource.
Therefore, dedicated channel (DCH) is compared, and HSDPA has very big advantage.Very suitable those transfer of data demands of HSDPA technology have sudden, and data transmission delay requires not have the high non-real-time services of session service such as voice call.The adaptive modulation and coding function of HSDPA, make the modulation system that when the residing channel circumstance of user is reasonable, can adopt 16QAM, and use high encoding rate, thereby under the situation of using same channel code and power resource, improved 100% even more the acquisition high-speed data transmission, the relative DCH channel of the resource utilization of channel code and power.If a cell configuration 15 HS-PDSDCH channels, each user's maximum data transfer rate can reach 13.976Mbps when the residing channel circumstance of user allowed in theory.HSDPA adopt to mix retransmits (HARQ) technology, directly the data of bust this is retransmitted in physical layer, retransmits with the rlc layer of DCH channel and compares, and greatly reduces the time delay that data re-transmission is brought, thereby provides higher service quality for the user.
Generally speaking, system has reserved certain resource and has given HSDPA according to the business model of estimating in each sub-district, and these resources frequent modification can not take place, and have bigger gap between the business model of reserved resource and reality.So if these resources of better utilization, the advantage of giving full play to HSDPA is a key of RRM in the WCDMA system.
In the prior art scheme, when a user asks to set up business in the sub-district, system is just in conjunction with the ability of sub-district, user place, and according to the using priciple of channel type, for this user distributes a kind of suitable channel type (available channel type comprises: common signal channel, dedicated channel (DCH) and high speed descending sharing channel HS-PDSCH).
If current area does not have the tenability of HSDPA technology, then system can only give this user's assigned with dedicated channel or common signal channel.
If current area can be supported HSDPA, then can there be three kinds of selections (common signal channel, dedicated channel (DCH) and high speed descending sharing channel (HS-PDSCH)) in system for the channel type of this user's distribution.
If system is according to the selection principle of cell ability and channel type, for this user priority has been selected shared channel (HS-PDSCH), but there have been many users using the HS-PDSCH channel in the sub-district and the system that makes enough HS-PDSCH channel resource is provided to this user the time, system just refuses this user and uses the HS-PDSCH channel resource, gives this user and redistribute dedicated channel or common signal channel.
In real system, because the influence of various factorss such as system upgrade and saving cost, the different districts that covers same geographical position may have different abilities, and wherein the HSDPA characteristic is supported in the part sub-district, but all the other sub-districts do not have the tenability of HSDPA.Therefore, based on existing technical scheme, when never supporting in the sub-district of HSDPA characteristic request, the user sets up when professional, can only use dedicated channel or common signal channel, and less than the chance that obtains better service quality the sub-district of supporting HSPDA from other, even also have enough HSDPA resources left in the sub-district of current time support HSDPA.
In addition, all support the HSDPA characteristic, but, cause the operating position of two sub-district HSDPA resources unbalanced because the user inserts and initiates professional randomness even cover a plurality of sub-districts in same geographical position.Therefore, based on existing technical scheme, if the user does not almost have remaining sub-district request to set up when professional from a HSDPA resource, it also is very large being rejected and using the probability of HSDPA resource.
Summary of the invention
The problem that the present invention solves is to avoid abundant inadequately to the HSDPA utilization of resources.
For addressing the above problem, method for allocating down going sharing channel in high speed of the present invention comprises step: 1) obtain user's request, the channel type of determining priority allocation is a high speed descending sharing channel; 2) determine that the current area that the user inserts do not support high speed downlink grouping access business or do not have enough high speed downlink grouping access business resources; 3) determine identical or greater than the current area coverage with the current area coverage, and the alien-frequency district of support high speed downlink grouping access business; 4) determine that alien-frequency district has enough high speed downlink grouping access business resources; 5) user is switched to the alien-frequency district of step 4), insert this alien-frequency district again, obtain high speed descending sharing channel and distribute.
Step 2) further comprises if the current area that the user inserts is supported high speed downlink grouping access business, and if enough resources are arranged then distribute the high speed descending sharing channel in the current area to transmit data for this user.
Step 3) further comprises: if there is no coverage is identical or cover current area and support the high speed downlink grouping access business alien-frequency district, then distributes the non-high speed descending sharing channel of current area to give the user.
Step 4) further comprises: distribute the non-high speed descending sharing channel of current area to give the user if alien-frequency district does not have enough high speed downlink grouping access business resources.
Step 2) and step 4) by read the record sub-district whether support the cell capacity information of high speed downlink grouping access business to judge whether the sub-district supports high speed downlink grouping access business, and this cell capacity information is kept in the database of base station and base station controller.
Whether the message transmission rate that provides by sub-district residue high speed downlink grouping access business resource relatively determines whether service resources enough more than or equal to the message transmission rate that inserts customer requirements.
Judged whether that with the cell coverage information that current area has the alien-frequency district of identical or covering the alien-frequency district coverage is identical or cover current area by reading record in the step 4), this cell coverage information is kept in the database of base station and base station controller.
Compared with prior art, the present invention has the following advantages:
Because the present invention does not support high speed downlink grouping access business or does not have enough high speed downlink grouping access business resources in current area, if have the alien-frequency district that covers current area and have enough HSDPA resources, just the mode of this user by switching, be directly switch to the alien-frequency district that satisfies condition, the high speed data transfer of HSDPA can be provided for more user, improve systematic function; Make full use of idle HSDPA resource, improve the HSDPA efficiency of resource, when making full use of the technical advantage of HSDPA, improve the capacity and the service quality of system.
Description of drawings
Fig. 1 is that the HSDPA resource is used schematic diagram.
Fig. 2 is the method for allocating down going sharing channel in high speed first embodiment schematic diagram of the present invention.
Fig. 3 is the method for allocating down going sharing channel in high speed second embodiment schematic diagram of the present invention.
Fig. 4 is a method for allocating down going sharing channel in high speed flow chart of the present invention.
Embodiment
Technical solution of the present invention essence is the business that is more suitable for being mapped to HSDPA for those, if current area can not be supported the HSDPA function, perhaps current area is supported HSDPA but when not having enough HSDPA resources left, if have the alien-frequency district that covers current area and have enough HSDPA resources, just, be directly switch to the alien-frequency district that satisfies condition the mode of this user by switching.
Method for allocating down going sharing channel in high speed of the present invention may further comprise the steps:
1) obtain user's request, the channel type of determining priority allocation is a high speed descending sharing channel;
2) determine that the current area that the user inserts do not support high speed downlink grouping access business or do not have enough high speed downlink grouping access business resources;
3) determine identical or greater than the current area coverage with the current area coverage, and the alien-frequency district of support high speed downlink grouping access business;
4) determine that alien-frequency district has enough high speed downlink grouping access business resources;
5) user is switched to the alien-frequency district of step 4), insert this alien-frequency district again, obtain high speed descending sharing channel and distribute.
Described step 2) further comprise 21) judge whether the current area that the user inserts supports high speed downlink grouping access business, if support then forward step 22 to), if do not support then forward step 3) to; 22) judge whether enough high speed downlink grouping access business resources, if do not have enough resources then go to step 3), if enough resources are arranged then distribute the high speed descending sharing channel in the current area to transmit data for this user.
Described step 3) further comprises: 31) judged whether identical with the current area coverage or greater than the current area coverage, and supported the alien-frequency district of high speed downlink grouping access business; 32) if there is the alien-frequency district of supporting high speed downlink grouping access business, then execution in step 4); 33) if there is no coverage is identical or cover current area and support the high speed downlink grouping access business alien-frequency district, then distributes the non-high speed descending sharing channel of current area to give the user.
Described step 4) further comprises: judge 41) whether this alien-frequency district has enough high speed downlink grouping access business resources; 42) if not having enough high speed downlink grouping access business resources, distribute alien-frequency district the non-high speed descending sharing channel of current area to give the user; 43) if having, then execution in step 5).
According to Fig. 4 is method for allocating down going sharing channel in high speed detail flowchart of the present invention, may further comprise the steps:
Whether the current area that described user inserted has the HSDPA tenability, whether supports what the cell capacity information of high speed downlink grouping access business was judged by reading the record sub-district in the present embodiment.Whether this cell capacity information can just support each sub-district the information of HSDPA to be recorded in the entity (for example database of base station and base station controller (RNC) equipment) of carrying out technical solution of the present invention at the networking initial stage, therefrom reads the current area ability information then when data service is set up in user's request and just can determine whether current area supports HSDPA.
Judge in the present embodiment whether current area has the method for enough HSDPA resources left normally to carry out access control at the HSDPA resource, but carry out that access control does not belong to content of the present invention and different admittance control methods does not influence enforcement of the present invention.For example, whether the message transmission rate that provides by sub-district residue high speed downlink grouping access business resource relatively determines whether resource enough remain more than or equal to the message transmission rate that inserts customer requirements.If the message transmission rate that surplus resources provides, determines then that current area HSDPA resource has residue more than or equal to the message transmission rate requirement of user's requested service, otherwise determine that then the HSDPA resource of current area does not remain.
Exist at the alien-frequency district that whether has coverage to cover or to equal current area in the present embodiment, and whether this alien-frequency district has the ability of supporting HSDPA, judges with the cell coverage information that current area has the alien-frequency district of identical or covering by reading record.This cell coverage information is indicated the relativeness of each cell coverage area, in the networking process, can obtain by the result of the network planning, and the related cell coverage information is recorded in the database of RNC (base station and base station controller) equipment, the information of record can comprise: cover current area or have with the sub-district of the identical coverage of current area which is arranged.If the coverage of an alien-frequency district covers or equals current area, just mean that also this alien-frequency district has covered all users in the current area, system just can switch to the user in the current area this alien-frequency district, guarantees these quality of services for users simultaneously.
Please refer to shown in Figure 2ly, system comprises sub-district 1 (having frequency f 1), sub-district 2 (having frequency f 2), sub-district 3 (having frequency f 1) and sub-district 4 (having frequency f 2).A non-real-time service is set up in user's request that signaling of existence in sub-district 4 connects, and determines that according to the cell capacity information that reads sub-district 4 in the RNC device databases sub-district 4 does not have the tenability of HSDPA; And according to the definite alien-frequency district 3 that has identical coverage with sub-district 4 of the coverage information that reads in the RNC device databases, 3 cell capacity information determines that sub-district 3 has the tenability of HSDPA from the sub-district, and determine that according to access control current area 3 has enough residue HSDPA resources, so system is directly switch to sub-district 3 to this user, this user carries out transfer of data by HSDPA in sub-district 3, obtain better service quality.
Please refer to shown in Figure 3, a user in the sub-district 4 (having frequency f 2) has set up a business on common signal channel, because when professional variation need be transmitted more data, system's decision distributed the HS-PDSCH channel to improve the speed of transfer of data for the user.At this moment, though current area 4 is supported HSDPA but is not had enough surplus resources to satisfy this user's business demand, and the definite alien-frequency district 3 that has identical coverage with sub-district 4 of the coverage information of the sub-district 4 that from the RNC device databases, obtains, 3 cell capacity information determines that sub-district 3 has the tenability of HSDPA from the sub-district, and knows that according to admission control algorithm there are enough HSDPA resources left current time sub-district 3.So system is directly switch to sub-district 3 to this user, this user carries out transfer of data by HSDPA in sub-district 3, obtains better service quality.
Claims (7)
1. a method for allocating down going sharing channel in high speed is characterized in that, comprises step:
1) obtain user's request, the channel type of determining priority allocation is a high speed descending sharing channel;
2) determine that the current area that the user inserts do not support high speed downlink grouping access business or do not have enough high speed downlink grouping access business resources;
3) determine identical or greater than the current area coverage with the current area coverage, and the alien-frequency district of support high speed downlink grouping access business;
4) determine that alien-frequency district has enough high speed downlink grouping access business resources;
5) user is switched to the alien-frequency district of step 4), insert this alien-frequency district again, obtain high speed descending sharing channel and distribute.
2. method for allocating down going sharing channel in high speed as claimed in claim 1 is characterized in that step 2) further comprise
If the current area that the user inserts is supported high speed downlink grouping access business, and if enough resources are arranged then distribute the high speed descending sharing channel in the current area to transmit data for this user.
3. method for allocating down going sharing channel in high speed as claimed in claim 2 is characterized in that step 3) further comprises:
If there is no identical or covering current area and support high speed downlink grouping access business alien-frequency district of coverage then distributes the non-high speed descending sharing channel of current area to give the user.
4. method for allocating down going sharing channel in high speed as claimed in claim 3 is characterized in that step 4) further comprises:
If not having enough high speed downlink grouping access business resources, distribute alien-frequency district the non-high speed descending sharing channel of current area to give the user.
5. as each described method for allocating down going sharing channel in high speed of claim 1-4, it is characterized in that, step 2) and step 4) by read the record sub-district whether support the cell capacity information of high speed downlink grouping access business to judge whether the sub-district supports high speed downlink grouping access business, and this cell capacity information is kept in the database of base station and base station controller.
6. as each described method for allocating down going sharing channel in high speed of claim 1-4, it is characterized in that, whether the message transmission rate that provides by sub-district residue high speed downlink grouping access business resource relatively determines whether high speed downlink grouping access business resource enough more than or equal to the message transmission rate that inserts customer requirements.
7. as each described method for allocating down going sharing channel in high speed of claim 1-4, it is characterized in that, judged whether that with the cell coverage information that current area has the alien-frequency district of identical coverage or covering current area the alien-frequency district coverage is identical or cover current area by reading record in the step 4), this cell coverage information is kept in the database of base station and base station controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101279401A CN101325811B (en) | 2004-12-28 | 2004-12-28 | Method for distributing high speed down share channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101279401A CN101325811B (en) | 2004-12-28 | 2004-12-28 | Method for distributing high speed down share channel |
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| CNB2004101034980A Division CN100397946C (en) | 2004-12-28 | 2004-12-28 | Method for allocating down going sharing channel in high speed |
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| CN101325811A CN101325811A (en) | 2008-12-17 |
| CN101325811B true CN101325811B (en) | 2010-11-10 |
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| CN104066182B (en) * | 2013-03-21 | 2020-01-10 | 中国移动通信集团山西有限公司 | Method and device for configuring downlink shared control channel HS-SCCH |
| CN104955015B (en) * | 2014-03-27 | 2018-05-22 | 中国移动通信集团安徽有限公司 | The method and device that a kind of communication resource is shared |
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