CN102088773A - Dynamic downlink channel resource distribution method - Google Patents
Dynamic downlink channel resource distribution method Download PDFInfo
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- CN102088773A CN102088773A CN2009101885957A CN200910188595A CN102088773A CN 102088773 A CN102088773 A CN 102088773A CN 2009101885957 A CN2009101885957 A CN 2009101885957A CN 200910188595 A CN200910188595 A CN 200910188595A CN 102088773 A CN102088773 A CN 102088773A
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Abstract
The invention provides a dynamic downlink channel resource distribution method, wherein a radio network controller (RNC) receives data packets transmitted by an application layer, extracts service characteristic data of each data packet to determine corresponding service parameters, and selects the type of a downlink channel according to the service parameters. By the method, services having different data characteristics can be loaded to corresponding transmission channels, so service resource requirements are met and unnecessary reconfigurations are reduced, the service performance is enhanced, and the utilization rate of resources of cell channels is increased.
Description
Technical field
The present invention relates to a kind of to the channel resource dynamic allocation method, relate in particular to TD SDMA (Time Division Synchronization CDMA in the communication field, TD-SCDMA) in the honeycomb mobile communcations system to the dynamic allocation method of the professional down channel resources of PS (Packet Service, Packet Service).
Background technology
In the TD-SCDMA system, can be used to carry the professional down channel resources of PS (Packet Service, Packet Service) has multiplely, roughly can be divided into:
DCH (Dedicated Channel, dedicated channel) channel is the service-specific channel, and suitable bearer service activity is strong and flow is professional stably.
HS-DSCH (High Speed Downlink Shared Channel, high speed descending sharing channel) channel is common signal channel, and multi-user data is time division multiplexing on HS-DSCH, and data transmission resources is distributed by the NodeB scheduling.The transmittability of HS-DSCH channel is stronger than DCH, and the theoretical limit throughput of single time slot is 512K, is fit to carrying high-speed data service or the bigger business of bursty data amount.The HS-DSCH channel needs and follows the DCH channel accordingly, and the therefore available low speed of following channel bearing and flow business comparatively stably are not suitable for being carried on the HS-DSCH channel.
FACH (Forward Access Channel, forward direction inserts) channel is common signal channel, and multi-user data is time division multiplexing on FACH.Need to use omnidirectional's power emission owing to FACH is difficult to do figuration, so the FACH channel is not suitable for being carried in the business time-slot, and the restriction that its capacity in the TS0 configuration is subjected to cell power is also more limited.Therefore the FACH channel is fit to the weak and little business of bursty data amount of carrying activity.
For the PS business, RNC (Radio Network Controller, radio network controller) generally according to CN (Core Network, core net) QoS that issues (Quality of Service, service quality) parameter (comprising type of service, maximum rate and assurance speed) is distributed in it on corresponding channel resources, in business maintenance process, dynamically adjust resource allocation then, to satisfy professional demand according to the business datum demand.At present, generally all assess the service resources demand according to the measuring business volume incident.The measuring business volume incident is according to RLC (Radio Link Control, Radio Link control) data volume (BO in the buffer area, BufferOccupy, buffering takies) with relatively the reporting of incident thresholding, what BO reflected is the size of professional outgoing data amount, changes along with the variation of application layer data amount.Then for the professional resource that increases, receive that measuring business volume 4B incident then reduces resource for business when RNC receives measuring business volume 4A incident, the resource that increases and reduce can be a fixed configurations, also can be dynamic estimation.When satisfying business demand, can effectively utilize system resource like this.
Dynamically adjust traffic resource assignment according to the measuring business volume incident, its advantage is, can follow the size that application layer issues data volume fast and carry out the corresponding channel resources adjustment; And shortcoming is: the algorithm adjustment is relatively more responsive, cause frequent adjustment easily for sudden strong business, be professional increase resource always when business burst, and service resources reduced gradually in professional quiet period, it is slower to cause adjusting convergence, and business is difficult to be stabilized on a certain speed.
Summary of the invention
Based on the problems referred to above, the invention provides a kind of method of down channel resources dynamic assignment, improve professional stability.
For addressing the above problem, a kind of down channel resources dynamic allocation method is provided, and wherein, radio network controller (RNC) receives the packet that application layer issues, extract the service feature data of each packet and determine the corresponding business parameter, and select the down channel type according to this service parameter.
Further, described RNC selects the down channel type to comprise according to this service parameter: if professional maximum burst data packet group data volume is less than forward access channel FACH maximum burst data packet group data volume thresholding, maximum burst data packet group speed is less than FACH maximum burst data packet group speed, activity is less than FACH activity thresholding, Mean Speed also less than FACH average throughput thresholding, is then selected the FACH channel.
Further, described RNC selects the down channel type to comprise according to this service parameter: if professional maximum burst data packet group data volume is less than dedicated channel DCH maximum burst data packet group data volume thresholding, maximum burst data packet group speed is less than DCH maximum burst data packet group speed, activity is greater than DCH activity thresholding, Mean Speed is less than DCH average throughput thresholding, then select the DCH channel, and distribute the DCH resource according to Mean Speed.
Further, described RNC selects the down channel type to comprise according to this service parameter: if professional maximum burst data packet group data volume is greater than DCH maximum burst data packet group data volume thresholding, perhaps maximum burst data packet group speed is greater than DCH maximum burst data packet group speed, perhaps Mean Speed is then selected the high speed downlink shared channel HS-DSCH channel greater than DCH average throughput thresholding.
Further, data volume and time of reception that described service feature data are packet, described service parameter comprise maximum burst data packet group data volume, maximum burst data packet group speed, activity and Mean Speed.
Further, is a bursty data package with the time of reception difference of continuous several adjacent two data bags less than the packet definitions of inter-packet gap thresholding, with the data volume sum of all packets in this bursty data package data volume as this bursty data package, for the bursty data package of all duration greater than certain thresholding, with the bursty data package data volume of maximum maximum burst data packet group data volume as business, for the bursty data package of all duration, with the bursty data package speed of maximum sign as professional maximum burst data volume smaller or equal to certain thresholding; With the time of reception difference of last packet in the bursty data package and first packet duration as this bursty data package, with the ratio of duration of the data volume of bursty data package and bursty data package as bursty data package speed, with the bursty data package speed of bursty data package speed maximum in the analytical cycle as maximum.
Further, with time interval of adjacent two bursty data packages quiet period as business, with the professional silence period of all the quiet period time sums in the analytical cycle as analytical cycle, described activity is the professional silence period and the analytical cycle ratio of 1-analytical cycle; Mean Speed is all the interior data packet group data volumes of analytical cycle and the ratio of analytical cycle.
Further,, then initiate professional reprovision flow process if the target downlink channel type is different with professional current downlink channel, with business migration to the target downlink channel.
Further, described certain thresholding is determined by system emulation or prediction.
Adopt method of the present invention, can with service bearer to corresponding transmission channel, when satisfying the service resources demand, reduce unnecessary reprovision, improved service feature, promoted the utilance of cell channel resource with different pieces of information feature.
Description of drawings
Fig. 1 is a specific embodiment of the invention down channel dynamic assignment flow chart.
Embodiment
As shown in Figure 1, terminal is initiated the PS business, and RNC receives the packet that application layer issues, and whenever receives a packet, writes down the data volume and the time of reception of this packet.After the related data of all packets in the collection analysis cycle, according to the time of reception sequencing packet is analyzed one by one, extract the service feature data, determine the corresponding business parameter according to the service feature data, thereby selective channel type, its characteristic comprises: data packet group data volume, i.e. the data total amount that comprises of data packet group; The duration of data packet group, promptly the time of reception of last packet and first packet is poor in the data packet group; The time of reception interval of adjacent two data package, the time of reception of first packet of a promptly back data package and last packet of previous data packet group at interval.
Implementation method:
Find continuously the packet of the time of reception difference of several adjacent two data bags less than the inter-packet gap thresholding, it is considered as a bursty data package, the inter-packet gap thresholding is meant the time interval between the packet in the bursty data package;
With the data volume sum of all packets in this bursty data package data volume as this bursty data package;
With the time of reception difference of last packet in this bursty data package and first packet duration as this bursty data package; With the ratio of duration of the data volume of this bursty data package and this bursty data package as bursty data package speed;
With time interval of adjacent two bursty data packages quiet period as business, all the quiet period time sums in the computational analysis cycle are the professional silence period of analytical cycle.
The data volume sum of all bursty data packages is the total amount of data of analytical cycle in the computational analysis cycle.Analyze traffic performance thus, concrete professional analytical method is as follows:
Preferential, determine the corresponding business parameter:
The sign of professional maximum burst data volume: can characterize by the bursty data package data volume of maximum, that is: maximum burst data packet group data volume; Perhaps levy, that is: the ratio of the duration of the data volume of maximum burst data packet group and maximum burst data packet group by the bursty data package Speedometer Drive of maximum.Wherein, for the bursty data package of all duration, try to achieve the sign of the bursty data package data volume of maximum wherein as professional maximum burst data volume greater than certain thresholding; For duration of all data packet group bursty data package smaller or equal to certain thresholding, try to achieve the sign of the bursty data package speed of maximum wherein as professional maximum burst data volume, described certain thresholding is definite by emulation or prediction.
Professional average amount can be characterized by its Mean Speed, that is: all the data packet group data volumes in the analytical cycle and the ratio of analytical cycle;
Business activity: by the ratio of bursty data duration and lasting total time of business, the i.e. professional silence period of 1-analytical cycle and analytical cycle ratio;
After definite corresponding business parameter, RNC comes the selective channel type according to service parameter:
If the maximum burst data packet group data volume of A business is less than FACH maximum burst data packet group data volume thresholding, maximum burst data packet group speed is less than FACH maximum burst data packet group speed, activity is less than FACH activity thresholding, Mean Speed also less than FACH average throughput thresholding, is then selected the FACH channel.
If the maximum burst data packet group data volume of B business is less than DCH maximum burst data packet group data volume thresholding, maximum burst data packet group speed is less than DCH maximum burst data packet group speed, activity is greater than DCH activity thresholding, Mean Speed is less than DCH average throughput thresholding, then select the DCH channel, and distribute the DCH resource according to Mean Speed.
If the maximum burst data packet group data volume of C business is greater than DCH maximum burst data packet group data volume thresholding, perhaps maximum burst data packet group speed is greater than DCH maximum burst data packet group speed, perhaps Mean Speed is then selected the HS-DSCH channel greater than DCH average throughput thresholding.
Last is the traffic assignments resource according to the destination channel type of determining.If the destination channel type is different with professional current channel, then initiate professional reprovision flow process, with business migration to target resource.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.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 (9)
1. down channel resources dynamic allocation method, it is characterized in that: radio network controller (RNC) receives the packet that application layer issues, extract the service feature data of each packet and determine the corresponding business parameter, and select the down channel type according to this service parameter.
2. method according to claim 1 is characterized in that: described RNC selects the down channel type to comprise according to this service parameter:
If professional maximum burst data packet group data volume is less than forward access channel FACH maximum burst data packet group data volume thresholding, maximum burst data packet group speed is less than FACH maximum burst data packet group speed, activity is less than FACH activity thresholding, Mean Speed also less than FACH average throughput thresholding, is then selected the FACH channel.
3. method according to claim 1 is characterized in that: described RNC selects the down channel type to comprise according to this service parameter:
If professional maximum burst data packet group data volume is less than dedicated channel DCH maximum burst data packet group data volume thresholding, maximum burst data packet group speed is less than DCH maximum burst data packet group speed, activity is greater than DCH activity thresholding, Mean Speed is less than DCH average throughput thresholding, then select the DCH channel, and distribute the DCH resource according to Mean Speed.
4. method according to claim 1 is characterized in that: described RNC selects the down channel type to comprise according to this service parameter:
If professional maximum burst data packet group data volume is greater than DCH maximum burst data packet group data volume thresholding, perhaps maximum burst data packet group speed is greater than DCH maximum burst data packet group speed, perhaps Mean Speed is then selected the high speed downlink shared channel HS-DSCH channel greater than DCH average throughput thresholding.
5. according to claim 2,3 or 4 described methods, it is characterized in that: data volume and time of reception that described service feature data are packet, described service parameter comprise maximum burst data packet group data volume, maximum burst data packet group speed, activity and Mean Speed.
6. according to claim 2,3 or 4 described methods, it is characterized in that: the time of reception difference of several adjacent two data bags is a bursty data package less than the packet definitions of inter-packet gap thresholding continuously, with the data volume sum of all packets in this bursty data package data volume as this bursty data package, for the bursty data package of all duration greater than certain thresholding, with the bursty data package data volume of maximum maximum burst data packet group data volume as business, for the bursty data package of all duration, with the bursty data package speed of maximum sign as professional maximum burst data volume smaller or equal to certain thresholding; With the time of reception difference of last packet in the bursty data package and first packet duration as this bursty data package, with the ratio of duration of the data volume of bursty data package and bursty data package as bursty data package speed, with the bursty data package speed of bursty data package speed maximum in the analytical cycle as maximum.
7. according to claim 2,3 or 4 described methods, it is characterized in that: with time interval of adjacent two bursty data packages quiet period as business, with the professional silence period of all the quiet period time sums in the analytical cycle as analytical cycle, described activity is the professional silence period and the analytical cycle ratio of 1-analytical cycle; Mean Speed is all the interior data packet group data volumes of analytical cycle and the ratio of analytical cycle.
8. according to claim 2,3 or 4 described methods, it is characterized in that: if the target downlink channel type is different with professional current downlink channel, then initiate professional reprovision flow process, with business migration to the target downlink channel.
9. method according to claim 6 is characterized in that: described certain thresholding is determined by system emulation or prediction.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105187170A (en) * | 2014-06-20 | 2015-12-23 | 苹果公司 | Selecting A Physical Data Channel Based On Application Traffic Pattern |
| WO2018045864A1 (en) * | 2016-09-07 | 2018-03-15 | 华为技术有限公司 | Data transmission method and terminal |
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| CN1585505A (en) * | 2003-08-22 | 2005-02-23 | 北京三星通信技术研究有限公司 | Method for inquiring channel type by service wireless network controller |
| CN1633053A (en) * | 2003-12-22 | 2005-06-29 | 上海贝尔阿尔卡特股份有限公司 | Method of dynamic channel code management for high-speed downlink shared channel |
| CN1819696A (en) * | 2005-02-07 | 2006-08-16 | 上海贝尔阿尔卡特股份有限公司 | Admission control algorithm and device for HSUPA service |
| CN101087477A (en) * | 2006-08-23 | 2007-12-12 | 中兴通讯股份有限公司 | Method for configuring physical layer type of high-speed downlink share channel |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1585505A (en) * | 2003-08-22 | 2005-02-23 | 北京三星通信技术研究有限公司 | Method for inquiring channel type by service wireless network controller |
| CN1633053A (en) * | 2003-12-22 | 2005-06-29 | 上海贝尔阿尔卡特股份有限公司 | Method of dynamic channel code management for high-speed downlink shared channel |
| CN1819696A (en) * | 2005-02-07 | 2006-08-16 | 上海贝尔阿尔卡特股份有限公司 | Admission control algorithm and device for HSUPA service |
| CN101087477A (en) * | 2006-08-23 | 2007-12-12 | 中兴通讯股份有限公司 | Method for configuring physical layer type of high-speed downlink share channel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105187170A (en) * | 2014-06-20 | 2015-12-23 | 苹果公司 | Selecting A Physical Data Channel Based On Application Traffic Pattern |
| CN105187170B (en) * | 2014-06-20 | 2020-06-09 | 苹果公司 | Selecting physical data channels based on application traffic patterns |
| WO2018045864A1 (en) * | 2016-09-07 | 2018-03-15 | 华为技术有限公司 | Data transmission method and terminal |
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Application publication date: 20110608 |