CN101039509A - Channel transferring method for high speed downlink sharing channel and dedicated channel - Google Patents

Channel transferring method for high speed downlink sharing channel and dedicated channel Download PDF

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CN101039509A
CN101039509A CNA2006100651370A CN200610065137A CN101039509A CN 101039509 A CN101039509 A CN 101039509A CN A2006100651370 A CNA2006100651370 A CN A2006100651370A CN 200610065137 A CN200610065137 A CN 200610065137A CN 101039509 A CN101039509 A CN 101039509A
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channel
quality
thresholding
high speed
incident
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CN101039509B (en
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吕平宝
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ZTE Corp
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ZTE Corp
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Abstract

The present invention discloses a channel migration method of high-speed downlink shared channels and dedicated channels. The present invention is in order to solve the problem that the existing high-speed downlink shared channels and dedicated channels can not reasonably allocate the resources and can not get a higher spectral efficiency in the business bearing transmission process. The present inventive channel migration method of high-speed downlink shared channels and dedicated channels, measures wireless channel parameters including the wireless channel quality, the business volume, and the business effective rate; and compares the measurement results with the set wireless channel quality threshold, the business volume threshold and the business effective rate threshold; and then decides whether to carry out the mutual migration of the high-speed downlink shared channels and dedicated channels. The present inventive channel migration method of high-speed downlink shared channels and dedicated channels, can reasonably allocate the resources in the running course of the system to a higher spectrum efficiency, and can guarantee the service quality of the business.

Description

The channel migration method of high speed descending sharing channel and dedicated channel
Technical field
The present invention relates to the transmission channel moving method of a kind of mobile cellular communication system, relate in particular to and support high-speed downlink packet to insert high speed descending sharing channel (the High Speed Downlink Shared Channel of the WCDMA mobile communication system (WCDMA) of (HSDPA), HS-DSCH) and dedicated channel (DedicatedChannel, channel migration method DCH).
Background technology
HSDPA be 3GPP in the R5 agreement on satisfying/the asymmetric demand of downstream data traffic and a kind of new technology of proposing, it solved well that system covers and capacity between contradiction, promoted power system capacity greatly, satisfied user's high speed business demand.
HSDPA has introduced a kind of new transmission channel at down link, be HS-DSCH, with carrying user data, the user shares descending sign indicating number resource and power resource, carries out time-division and code division multiplexing, and adopts Adaptive Modulation and Coding (Adaptive Modulation and Coding, AMC) and mix and to retransmit (Hybrid Automatic RepeatRequest automatically, HARQ) technology is carried out link circuit self-adapting, to increase terminal use's data throughout as much as possible, reduces transmission delay.The main feature of HSDPA is to select the channel coding method of high order modulation and two-forty to transmit user data when channel quality is relatively good, thereby obtains higher transmission rate; And when channel quality is poor, then choose the channel coding method of low-order-modulated mode and low rate, thereby can guarantee service quality (Quality ofService, QoS).
HSDPA can support to flow the transmission of class, interactive class and background classes Packet Service.Can think that generally HS-DSCH has higher spectrum efficiency and sign indicating number resource utilization than DCH, but because HS-DSCH does not adopt fast power control, not have soft handover gain at cell edge, HS-DSCH user's data speed may be lower than DCH.
Summary of the invention
In order to overcome above-mentioned defective, the object of the present invention is to provide a kind of based on quality of wireless channel, traffic carrying capacity and professional effective speed, and the HS-DSCH and the DCH channel migration method that in system's running, can reasonably carry out resource allocation.
For achieving the above object, the channel migration method of a kind of high speed descending sharing channel of the present invention and dedicated channel, the wireless channel parameter that comprises quality of wireless channel, traffic carrying capacity and professional effective speed is measured, and quality of wireless channel thresholding, traffic carrying capacity thresholding and the professional effective speed thresholding of measurement result and setting compared, according to comparative result decision whether the carrying out mutual migration of high speed descending sharing channel and dedicated channel.
Wherein, described wireless channel parameter is quality of wireless channel and traffic carrying capacity, this method is specially: when Packet Service in the maintenance process and when using dedicated channel transmission data, quality of wireless channel and traffic carrying capacity are measured, quality of wireless channel is higher than the quality of wireless channel thresholding of setting, and traffic carrying capacity is higher than the traffic carrying capacity thresholding of setting, carries out the channel migration of dedicated channel to high speed descending sharing channel.
Wherein, described wireless channel parameter is professional effective speed, this method is specially: when Packet Service in the maintenance process and when using high speed descending sharing channel transmission data, if the Packet Service of carrying is a stream class service, professional effective speed is measured, when professional effective speed is lower than the professional effective speed thresholding of setting, carry out the channel migration of high speed descending sharing channel to dedicated channel.
Wherein, described wireless channel parameter is quality of wireless channel and traffic carrying capacity, this method is specially: when Packet Service in the maintenance process and when using high speed descending sharing channel transmission data, if loaded service is interactive class or background business, quality of wireless channel and traffic carrying capacity are measured, when quality of wireless channel is lower than the quality of wireless channel thresholding of setting and traffic carrying capacity thresholding that traffic carrying capacity is higher than setting, carry out the channel migration of high speed descending sharing channel to dedicated channel.
Wherein, described quality of wireless channel is to measure in the frequency by Primary Common Pilot Channel, adopts 1E incident and the 1F incident condition as channel migration.
Wherein, the thresholding of 1E incident and 1F incident is following to be determined: according to the 3GPP agreement, and combining with theoretical analysis and link simulation, can obtain:
Ec/No PCPICH_1E＝ChannelConst+CQI-MPO-10*log 10(16)(in?dB) (0.1)
In the following formula, Ec/No PCPICHMeasure in the frequency for Primary Common Pilot Channel, MPO is the measurement power deviation of High-Speed Physical Downlink Shared Channel with respect to Primary Common Pilot Channel, the channel quality indication that CQI represents for the dB form, and ChannelConst is the channel constant.By the interior frequently thresholding Ec/No that measures of Primary Common Pilot Channel that 1E and 1F incident corresponded CQI threshold can obtain 1E and 1F incident is set PCPICH_1EOr Ec/No PCPICH_1F
Wherein, described measuring business volume is a Radio Access Network service buffer capacity, adopt 4A incident and 4B incident business demand condition as channel migration, described 4A incident is meant the measuring business volume value greater than the absolute thresholding of setting, and the 4B incident is meant that the measuring business volume value is less than the absolute thresholding of setting.
Wherein, the measurement of described professional effective speed, for the grouping stream class service, it is the assurance bit rate that is not less than the service request of ensuring the quality of products that professional effective speed thresholding is set.
The channel migration method of high speed descending sharing channel of the present invention and dedicated channel, when quality of wireless channel is higher than the quality of wireless channel thresholding of setting and traffic carrying capacity thresholding that traffic carrying capacity is higher than setting, Packet Service is in the maintenance process and using dedicated channel when transmission, the migration of dedicated channel can be carried out, higher spectrum efficiency and sign indicating number resource utilization can be reached like this to the channel of high speed descending sharing channel; When professional effective speed is lower than certain thresholding, and the business of transmission is a stream class service, when perhaps the business that is lower than the quality of wireless channel thresholding of setting and traffic carrying capacity thresholding that traffic carrying capacity is higher than setting and transmission when channel quality is background classes or interaction service, can carry out by the channel migration of high speed descending sharing channel to dedicated channel, can in system's running, reasonably carry out resource allocation like this, and guarantee professional QoS.
Description of drawings
Fig. 1 is that the DCH channel service keeps the flow chart of process migration to HS-DSCH;
Fig. 2 is the flow chart of moving to DCH in the HS-DSCH channel packet stream class service maintenance process;
Fig. 3 is the flow chart of moving to DCH in HS-DSCH channel packet interactive class or the background business maintenance process.
Embodiment
The channel migration method of high speed descending sharing channel disclosed by the invention and dedicated channel, by the wireless channel parameter that comprises quality of wireless channel, traffic carrying capacity and professional effective speed is measured, and quality of wireless channel thresholding, traffic carrying capacity thresholding and the professional effective speed thresholding of measurement result and setting compared, according to comparative result decision whether the carrying out mutual migration of high speed descending sharing channel and dedicated channel.
According to the difference of Packet Service type difference or transmission channel, above-mentioned wireless channel parameter can be quality of wireless channel, traffic carrying capacity or professional effective speed or their combination.
As shown in Figure 1, Packet Service carries out the measurement of wireless channel parameter earlier in the maintenance process and when using the DCH channel transmission data, and described wireless channel parameter is quality of wireless channel and traffic carrying capacity, and moving method is specially:
Step 101 is measured quality of wireless channel and traffic carrying capacity, enters step 102 then;
Step 102 judges whether quality of wireless channel is higher than the quality of wireless channel thresholding of setting, promptly whether triggers the 1E incident, if be higher than the quality of wireless channel thresholding, then enters step 103; If be not higher than the quality of wireless channel thresholding, then enter step 107;
Step 103 judges whether traffic carrying capacity is higher than the traffic carrying capacity thresholding of setting, and whether the 4A incident promptly takes place, if be higher than the traffic carrying capacity thresholding, then enters step 104, if be not higher than the traffic carrying capacity thresholding, then enters step 107;
Step 104, request HS-DSCH resource comprises power resource and sign indicating number resource, enters step 105 then;
Step 105, can judgement HS-DSCH resource apply for, if apply for, then enters step 106, if do not apply for, then enters step 107;
Step 106 is carried out the channel migration of DCH channel to the HS-DSCH channel, thereby can reach a spectrum efficiency and a sign indicating number resource utilization preferably;
Step 107, business remain on the DCH channel.
Quality of wireless channel is to measure in the frequency by Primary Common Pilot Channel, adopts 1E incident and the 1F incident condition as channel migration.Wherein, the thresholding of 1E incident and 1F incident is following determines:
According to the 3GPP agreement, and combining with theoretical analysis and link simulation, can obtain:
(1.1)SIR HS-PDSCH＝ChannelConst+CQI(in?dB)
(1.2)SIR PCPICH＝Ec/No PCPICH*256
(1.3) SIR HS - PDSCH = SIR PCPICH * MPO * 16 256
More than in three formulas, SIR HS-PDSCHBe symbol level SIR total after the HS-PDSCH despreading, SIR PCPICHBe the symbol level SIR after the Primary Common Pilot Channel despreading, Ec/No PCPICHMeasure in the frequency for Primary Common Pilot Channel, MPO is the measurement power deviation of HS-PDSCH with respect to Primary Common Pilot Channel, the channel quality indication that CQI represents for the dB form, ChannelConst is the channel constant, if subscriber equipment is in additive white Gaussian noise channel, then ChannelConst is-4.5dB, can be obtained by above-mentioned three formulas
(1.4)Ec/No PCPICH_1E＝ChannelConst+CQI-MPO-10*log 10(16)(in?dB)
By the interior frequently thresholding of measuring of Primary Common Pilot Channel that 1E and 1F incident corresponded CQI threshold can obtain 1E and 1F incident is set, substitution formula (1.4) can obtain the Primary Common Pilot Channel of 1E and 1F incident and measure thresholding frequently.
Measuring business volume is a Radio Access Network service buffer capacity, adopt 4A incident and 4B incident business demand condition as channel migration, described 4A incident is meant the measuring business volume value greater than the absolute thresholding of setting, and the 4B incident is meant that the measuring business volume value is less than the absolute thresholding of setting;
As shown in Figure 2, when grouping stream class service in the maintenance process and when using the HS-DSCH channel transmission data, carry out the measurement of wireless channel parameter earlier, described wireless channel parameter is professional effective speed, and moving method is specially:
Step 201, judgement business are grouping stream class service or grouping interactive class/background business; If the grouping stream class service then enters step 202, if interactive class or background business then enter step 207;
Step 202, the effective traffic speed of measurement Iub mouth enters step 203 then;
Step 203, whether the professional effective speed of judging the above-mentioned grouping stream class service that records is lower than professional effective speed thresholding, but is not less than the assurance bit rate of qos requirement, if professional effective speed is lower than professional effective speed thresholding, then enter step 204, otherwise enter step 208;
Step 204, request DCH resource comprises power resource and sign indicating number resource, enters step 205 then;
Step 205, can judgement DCH resource apply for, if apply for, enters step 206, otherwise enter step 208;
Step 206 is carried out the channel migration of HS-DSCH channel to the DCH channel;
Step 207, the HS-DSCH that turns to interactive class and background business is to DCH channel migration flow process;
Step 208, the grouping stream class service still remains on the HS-DSCH channel.
The measurement of professional effective speed adopts Iub mouth Frame speed approximate, the measurement of professional effective speed should be as far as possible near the user rate on the Uu mouth, for HSDPA grouping stream class service, because the Flow Control on the Iub mouth need be carried out based on the bit rate of Uu mouth, and most grouping stream class services adopt RLC UM pattern, thereby can think that the Frame speed of Iub mouth is approximately equal to the effective speed of customer service, by measuring the professional effective speed that business datum frame rate that Iub mouth in the dispatching cycle sends can obtain to be similar to; For the grouping stream class service, it is the assurance bit rate that is not less than qos requirement that professional effective speed thresholding can be set.
As shown in Figure 3, when grouping interactive class and background classes class business in the maintenance process and when using the HS-DSCH channel transmission data, moving method is specially:
Step 301, judgement business are grouping stream class service or grouping interactive class/background business, if interactive class or background business then enter step 302, if the grouping stream class service then enters step 308;
Step 302 is measured quality of wireless channel and traffic carrying capacity, enters step 303 then;
Step 303 judges whether quality of wireless channel is lower than the quality of wireless channel thresholding of setting, promptly whether triggers the 1F incident, if be lower than the quality of wireless channel thresholding, then enter step 304, otherwise enters step 309;
Step 304 judges whether traffic carrying capacity is higher than the traffic carrying capacity thresholding of setting, and whether the 4A incident promptly takes place, if traffic carrying capacity is higher than the traffic carrying capacity thresholding, then enters step 305;
Step 305, request DCH resource comprises power resource and sign indicating number resource, enters step 306 then;
Step 306, can judgement DCH resource apply for, if apply for, then enters step 307, otherwise enter step 309;
Step 307 is carried out the channel migration of HS-DSCH channel to the DCH channel;
Step 308, the HS-DSCH that turns to the grouping stream class service is to DCH channel migration flow process;
Step 309 still remains on HS-DSCH channel grouped data.
The measurement of described quality of wireless channel and traffic carrying capacity to the channel quality described in the HS-DSCH channel flow process and the method for measuring business volume, is measured channel quality and traffic carrying capacity in this flow process according to the DCH channel migration of embodiment 1.
The channel migration method of HS-DSCH channel of the present invention and DCH channel, when quality of wireless channel is better than the wireless communication way quality threshold of setting and traffic carrying capacity thresholding that traffic carrying capacity is higher than setting, Packet Service can carry out the migration of DCH channel to the HS-DSCH channel in the maintenance process and when using the DCH channel transmission data, can reach a higher spectrum efficiency and a sign indicating number resource utilization like this; Be lower than the professional effective speed thresholding of setting when professional effective speed, and the business of transmission is a stream class service, when perhaps the business that is lower than the quality of wireless channel thresholding of setting and traffic carrying capacity thresholding that traffic carrying capacity is higher than setting and transmission when channel quality is background classes or interaction service, can carry out by of the migration of HS-DSCH channel to the DCH channel, can in system's running, reasonably carry out resource allocation like this, and guarantee professional QoS.

Claims (8)

1, the channel migration method of a kind of high speed descending sharing channel and dedicated channel, it is characterized in that, the wireless channel parameter that comprises quality of wireless channel, traffic carrying capacity and professional effective speed is measured, and quality of wireless channel thresholding, traffic carrying capacity thresholding and the professional effective speed thresholding of measurement result and setting compared, according to comparative result decision whether the carrying out mutual migration of high speed descending sharing channel and dedicated channel.
2, according to the channel migration method of described high speed descending sharing channel of claim 1 and dedicated channel, it is characterized in that, described wireless channel parameter is quality of wireless channel and traffic carrying capacity, this method is specially: when Packet Service in the maintenance process and when using dedicated channel transmission data, quality of wireless channel and traffic carrying capacity are measured, quality of wireless channel is higher than the quality of wireless channel thresholding of setting, and traffic carrying capacity is higher than the traffic carrying capacity thresholding of setting, carries out the channel migration of dedicated channel to high speed descending sharing channel.
3, according to the channel migration method of described high speed descending sharing channel of claim 1 and dedicated channel, it is characterized in that, described wireless channel parameter is professional effective speed, this method is specially: when Packet Service in the maintenance process and when using high speed descending sharing channel transmission data, if the Packet Service of carrying is a stream class service, professional effective speed is measured, when professional effective speed is lower than the professional effective speed thresholding of setting, carry out the channel migration of high speed descending sharing channel to dedicated channel.
4, channel migration method according to described high speed descending sharing channel of claim 1 and dedicated channel, it is characterized in that, described wireless channel parameter is quality of wireless channel and traffic carrying capacity, this method is specially: when Packet Service in the maintenance process and when using high speed descending sharing channel transmission data, if loaded service is interactive class or background business, quality of wireless channel and traffic carrying capacity are measured, when quality of wireless channel is lower than the quality of wireless channel thresholding of setting and traffic carrying capacity thresholding that traffic carrying capacity is higher than setting, carry out the channel migration of high speed descending sharing channel to dedicated channel.
5, according to the channel migration method of claim 2 or 4 described high speed descending sharing channels and dedicated channel, it is characterized in that, described quality of wireless channel is to measure in the frequency by Primary Common Pilot Channel, adopts 1E incident and the 1F incident condition as channel migration.
According to the channel migration method of described high speed descending sharing channel of claim 5 and dedicated channel, it is characterized in that 6, the thresholding of 1E incident and 1F incident is following to be determined: according to the 3GPP agreement, and combining with theoretical analysis and link simulation, can obtain:
Ec/No PCPICH_1E＝ChannelConst+CQI-MPO-10*log 10(16)(in?dB) (0.1)
In the following formula, Ec/No PCPICHMeasure in the frequency for Primary Common Pilot Channel, MPO is the measurement power deviation of High-Speed Physical Downlink Shared Channel with respect to Primary Common Pilot Channel, the channel quality indication that CQI represents for the dB form, and ChannelConst is the channel constant.By the interior frequently thresholding Ec/No that measures of Primary Common Pilot Channel that 1E and 1F incident corresponded CQI threshold can obtain 1E and 1F incident is set PCPICH_1EOr Ec/No PCPICH_1F
7, according to the channel migration method of claim 2 or 4 described high speed descending sharing channels and dedicated channel, it is characterized in that, described measuring business volume is a Radio Access Network service buffer capacity, adopt 4A incident and 4B incident business demand condition as channel migration, described 4A incident is meant the measuring business volume value greater than the absolute thresholding of setting, and the 4B incident is meant that the measuring business volume value is less than the absolute thresholding of setting.
8, according to the channel migration method of described high speed descending sharing channel of claim 3 and dedicated channel, it is characterized in that, the measurement of described professional effective speed, for the grouping stream class service, it is to be not less than the assurance bit rate that guarantees service quality and require that professional effective speed thresholding is set.
CN2006100651370A 2006-03-17 2006-03-17 Channel transferring method for high speed downlink sharing channel and dedicated channel Expired - Fee Related CN101039509B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873599A (en) * 2009-04-27 2010-10-27 鼎桥通信技术有限公司 Method and device for reconfiguring channel resources
WO2012116606A1 (en) * 2011-02-28 2012-09-07 中兴通讯股份有限公司 Spectrum resource allocation method and apparatus
CN103024842A (en) * 2011-09-21 2013-04-03 宏碁股份有限公司 Method for switching operating modes of wireless communication system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030012217A1 (en) * 1999-10-29 2003-01-16 Christoffer Andersson Channel-type switching to a common channel based on common channel load
JP2003515294A (en) * 1999-11-17 2003-04-22 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Acceleration-dependent channel switching in mobile telecommunications
CN1738476A (en) * 2004-08-16 2006-02-22 上海华为技术有限公司 Channel switching method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873599A (en) * 2009-04-27 2010-10-27 鼎桥通信技术有限公司 Method and device for reconfiguring channel resources
WO2012116606A1 (en) * 2011-02-28 2012-09-07 中兴通讯股份有限公司 Spectrum resource allocation method and apparatus
CN103024842A (en) * 2011-09-21 2013-04-03 宏碁股份有限公司 Method for switching operating modes of wireless communication system

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