CN104283652B - The allocation management method of descending HARQ processes - Google Patents
The allocation management method of descending HARQ processes Download PDFInfo
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- CN104283652B CN104283652B CN201310285585.1A CN201310285585A CN104283652B CN 104283652 B CN104283652 B CN 104283652B CN 201310285585 A CN201310285585 A CN 201310285585A CN 104283652 B CN104283652 B CN 104283652B
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- harq
- subband
- processes
- contexts
- harq processes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
Abstract
This application discloses a kind of allocation management method of descending HARQ processes, physics subband number is bound with HARQ contextual informations, according to subband number, ID and radio frames frame number that physics subband is sent in schedule information, inquiry sends the corresponding HARQ contexts of physics subband, and the process number and process status of the HARQ processes of UE are distributed in acquisition.Using the present invention can distribute to the efficiency of HARQ processes of UE with quick obtaining, improve dispatching efficiency, reduce the HARQ context resource expenses of system.
Description
Technical field
The present invention relates to private network wireless communication field, more particularly to a kind of down mixing self-retransmission request
（HybridAutomatic Repeat Request, HARQ）The allocation management method of process.
Background technology
Current 230MHz frequency ranges are mainly used in data radio station and undertake long-range data collection task, because of the speed that provides very
It is low to be only used for some simple communications applications, it is impossible to meet intelligent grid and the growing business demand of Sensor Network.According to
Following planning of national grid, it is desirable to find a kind of new broadband communications technologies, meet its distribution automation, load management, use
Power information collection, smart power grid user service, emergency first-aid repair, the business demand in the big field of special area video monitoring six.
Based on TD-LTE（Time Division-Long Term Evolution）The 230MHz frequency range private networks of technology are wireless
Communication system preferable solution for the demand is provided, constitutes low-power consumption of new generation, and high spectrum utilization is highly reliable
The flexible multi-business communication system of property.The business need of power load monitoring system can farthest be met, while being state
The household electrical appliances generation network planning off the net provides solid technological accumulation and Applied D emonstration.
For above-mentioned business demand, private network wireless communication system network side evolution base station（Evolved NodeB, eNodeB）
Using semi-persistent scheduling mode（SPS, semi-persistent scheduling）.Semi-persistent scheduling refers to：Evolution base station is given
The running time-frequency resource that the allocation of packets of specific transactions is fixed, the packet of the specific transactions is passed in the running time-frequency resource position of the fixation
It is defeated, it is not required to extra Physical Downlink Control Channel（PDCCH, Physical Downlink Control Channel）Scheduling letter
Breath.By a transmission cycle being semi-statically configured, after once dispatching, user terminal UE（User Equipment）Press
The resource in cycle and initial schedule according to configuration carries out sending and receiving for data.According to 230MHz frequency range private network radio communications system
System frame structure and timing Design, downlink data transmission use HARQ technologies, Error Control is carried out to data, by new biography, retransmit
Data accurate actual effects is sent to user terminal UE.
In sum, according to 230MHz frequency range private network wireless communication system frame structures and timing Design and hardware handles energy
Power and a large number of users it is online and all using semi-persistent scheduling the characteristics of, finding one kind, effective to meet its descending
The method that HARQ data is accurately and reliably transmitted is particularly critical.
In existing 230MHz frequency ranges private network wireless communication system, HARQ process resources are carried out by the HARQ entities of system
Management, in scheduling for scheduling user distributes HARQ processes and carries out HARQ process configuring maintenances.Each HARQ entity is comprising more
Individual HARQ contexts, a HARQ context will record the relevant information of HARQ processes, including send radio frame number, feedback
Whether band, feedback radio frame number, downlink data buffering area, number of retransmissions, it is to retransmit the information such as Data Labels.Because 230MHz is special
The corresponding relation bound one by one with user using HARQ processes in net wireless communication system, i.e., one HARQ context and a use
Family is bound, therefore is required for traveling through the HARQ processes that all online users go lookup to distribute when dispatching user every time, so,
When online user is more, the time of traversal can be larger, so as to cause scheduling time more long, and then reduces systematic function.It can be seen that,
Constant in the ability of processor, on the basis of hardware cost is not increased, the HARQ treatment mechanisms of existing system are difficult to meet single small
Support the demand of a large number of users in area.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of allocation management method of descending HARQ processes, the party
Method can shorten the acquisition time of HARQ processes, improve dispatching efficiency.
In order to achieve the above object, technical scheme proposed by the present invention is：
A kind of allocation management method of descending HARQ processes, including：
It is when a, scheduler module are scheduled to user equipment (UE), the down mixing automatic repeat request HARQ of the UE is upper and lower
The transmission physics subband of text and the UE is bound, and the binding of the descending HARQ contexts and the transmission physics subband is believed
Breath is notified to corresponding HARQ entities；
B, when need to the UE send data when, the scheduling related information of the UE is sent to institute by the scheduler module
HARQ entities are stated, the scheduling related information includes ID, the subband number for sending physics subband, transmission radio frames of eating dishes without rice or wine
Frame number and the HARQ process types of needs configuration；
C, the HARQ entities are tied up according to the subband and HARQ contexts of the scheduling related information and current preservation
Determine information, acquisition distributes to the process number and process status of the HARQ processes of the UE and is sent to the scheduler module；
Whether d, the scheduler module will be needed on the physics subband in the radio frames of eating dishes without rice or wine to send using described
HARQ processes retransmit the configured information of data, notify to the HARQ entities；The HARQ entities indicate letter according to described
Breath and the HARQ process types, configure to the HARQ processes；
E, when the finishing scheduling to the UE, the scheduler module notifies that the HARQ entities delete the descending HARQ
The binding information of context and the downlink transfer subband.
In sum, the allocation management method of descending HARQ processes proposed by the present invention, by physics subband number and HARQ
Context information is bound, according to subband number, ID and radio frames frame number that physics subband is sent in schedule information, inquiry
The corresponding HARQ contexts of physics subband are sent, the process number and process status of the HARQ processes of UE are distributed in acquisition, in this way, with
Subband number is the efficiency of the HARQ processes that index search HARQ contexts can distribute to UE with quick obtaining, and then can improve tune
Degree efficiency, while the HARQ context resource expenses of system can also be reduced.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one.
Specific embodiment
It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in further detail.
Core concept of the invention is：Change descending HARQ contexts（That is HARQ processes）It is corresponding with what user was bound
Relation, the mechanism bound with transmission subband using HARQ contexts, binding relationship is determined when scheduling is started to user, this
Sample, without each online user of poll during scheduling, according to eating dishes without rice or wine radio frame number and UE indexes can just match HARQ process numbers
With HARQ states of a process.Because the available sub-band number of system is much smaller than the online user's quantity in system, therefore, it is this to incite somebody to action
HARQ contexts can be greatly reduced HARQ amount of context with the method for subband binding, not increase the premise of hardware cost
It is issued to the purpose of System Expansion.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one, as shown in figure 1, the embodiment mainly includes：
When step 101, scheduler module are scheduled to user equipment (UE), by the down mixing automatic repeat request of the UE
The transmission physics subband of HARQ contexts and the UE is bound, by the descending HARQ contexts and the transmission physics subband
Binding information notify to corresponding HARQ entities.
This step be used for start scheduling user when, by HARQ contexts with send physics subband corresponding relation notify to
HARQ entities, so that hereafter HARQ entities can find HARQ contexts by index of subband, and then according to ID and nothing
Line frame number obtains the HARQ progress informations in HARQ contexts.
Step 102, when needing to send data to the UE, the scheduler module sends out the scheduling related information of the UE
Give the HARQ entities.
The frame that the scheduling related information includes ID, the subband number for sending physics subband, eats dishes without rice or wine transmission radio frames
Number and need configuration HARQ process types.
Explanation is needed exist for, when data are sent out to UE, it is necessary to obtain the HARQ processes for distributing to the UE, here, is adjusted
Degree module needs for scheduling related information to issue HARQ entities, so that HARQ entities determine therefrom that the HARQ processes for distributing to UE simultaneously
Feed back to scheduler module.
Step 103, the HARQ entities are upper and lower according to the scheduling related information and the subband and HARQ of current preservation
The binding information of text, acquisition distributes to the process number and process status of the HARQ processes of the UE and is sent to the scheduling mould
Block.
Specifically, it is contemplated that HARQ processes are divided into the HARQ processes of PDCCH and the HARQ processes of PDSCH, distribution is being obtained
To the HARQ processes of the UE process number and process status when realized, it is necessary to distinguish specific HARQ process types, compared with
Goodly, following methods can be used：
When HARQ process of the HARQ process types for PDCCH, the HARQ entities are in the current subband number for preserving
In the binding information of HARQ contexts, with the subband number of the transmission physics subband for the corresponding HARQ of index search is upper and lower
Text, and inquire about in the corresponding HARQ contexts with the presence or absence of the frame with the ID and the transmission radio frames of eating dishes without rice or wine
Number information for matching, if it is present by HARQ process numbers and HARQ process status in the corresponding HARQ contexts
To retransmit state notifying to the scheduler module；If it does not exist, then judging to be eated dishes without rice or wine described on the transmission physics subband
Send whether radio frames have the idle HARQ process of PDCCH, if it has, then by a process for the idle HARQ process of PDCCH
Number and process status be sent to the scheduler module for the configured information of idle condition, if it is not, to the scheduling mould
Block returns to the busy configured information of process.
When HARQ process of the HARQ process types for PDSCH, the HARQ entities are in the current subband number for preserving
In the binding information of HARQ contexts, with the subband number of the transmission physics subband for the corresponding HARQ of index search is upper and lower
Text, and inquire about in the corresponding HARQ contexts with the presence or absence of the frame with the ID and the transmission radio frames of eating dishes without rice or wine
Number information for matching, if it is present HARQ process numbers and HARQ process status in the HARQ contexts that will be matched
For the configured information of retransmission state is sent to the scheduler module；If it does not exist, then judging on the transmission physics subband
Eat dishes without rice or wine to send whether radio frames have the idle HARQ process of PDSCH described, if it has, then by an idle HARQ of PDSCH
The process number and process status of process are that the configured information of idle condition is notified to the scheduler module, if it is not, to
The scheduler module returns to the busy configured information of process.
Need exist for explanation, as existing HARQ contexts, in the HARQ contexts will preserve ID,
The information such as radio frame number, when inquire send the corresponding HARQ contexts of physics subband in exist and the ID and described
During the information that the frame number of transmission radio frames of eating dishes without rice or wine matches, then data transfer was carried out before illustrating, HARQ process status should
It is retransmission state, otherwise, then before illustrating did not distributed HARQ processes, it is necessary to for the UE distributes the HARQ process of free time
And scheduler module is fed back to, if without idle HARQ processes, HARQ processes cannot be distributed for the UE, feed back HARQ processes
Busy information is to scheduler module.
Whether step 104, the scheduler module will need is eated dishes without rice or wine to send radio frames profit on the physics subband described
Carry out retransmitting the configured information of data with the HARQ processes, notify to the HARQ entities；The HARQ entities are according to
Configured information and the HARQ process types, configure to the HARQ processes.
In this step, if need on the physics subband in the radio frames of eating dishes without rice or wine to send using the HARQ processes
Carry out re-transmission data and determine that specific method is compared with system by scheduler module.The HARQ processes are configured, can be used
Existing method is realized.It is preferred that can be realized using following methods：
When needs carry out weight in the transmission radio frames of eating dishes without rice or wine on the transmission physics subband using the HARQ processes
When passing data, the data in caching are retransmitted to be sent to and eated dishes without rice or wine by the HARQ entities；
When need not it is described transmission physics subband on it is described eat dishes without rice or wine send radio frames be carried out using the HARQ processes
When retransmitting data, if the HARQ processes are the HARQ processes of PDCCH, the HARQ processes to the PDCCH are configured, deposited
Store up the data that the HARQ processes of the PDCCH are transmitted, if there is with the afoul PDSCH processes of the HARQ processes of the PDCCH,
Prolong after then the data transfer of the afoul PDSCH processes is carried out；
When need not it is described transmission physics subband on it is described eat dishes without rice or wine send radio frames be carried out using the HARQ processes
When retransmitting data, if the HARQ processes are the HARQ processes of PDSCH, the HARQ processes to the PDSCH are configured, deposited
Store up the data that the HARQ processes of the PDSCH are transmitted.
Step 105, when the finishing scheduling to the UE, the scheduler module notify the HARQ entities delete it is described under
The binding information of row HARQ contexts and the downlink transfer subband.
In sum, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in of the invention
Within protection domain.
Claims (3)
1. a kind of allocation management method of descending HARQ processes, it is characterised in that including：
When a, scheduler module are scheduled to user equipment (UE), by the down mixing automatic repeat request HARQ contexts of the UE and
The transmission physics subband of the UE is bound, and the binding information of the descending HARQ contexts and the transmission physics subband is led to
Know to corresponding HARQ entities；
B, when needing to send data to the UE, be sent to for the scheduling related information of the UE described by the scheduler module
HARQ entities, the frame that the scheduling related information includes ID, the subband number for sending physics subband, eats dishes without rice or wine transmission radio frames
Number and need configuration HARQ process types；
C, the HARQ entities are according to the scheduling related information and the binding letter of the current subband for preserving and HARQ contexts
Breath, acquisition distributes to the process number and process status of the HARQ processes of the UE and is sent to the scheduler module；
Whether d, the scheduler module will be needed on the physics subband in the radio frames of eating dishes without rice or wine to send using the HARQ
Process retransmit the configured information of data, notifies to the HARQ entities；The HARQ entities according to the configured information and
The HARQ process types, configure to the HARQ processes；
E, when the finishing scheduling to the UE, it is upper and lower that the scheduler module notifies that the HARQ entities delete the descending HARQ
The literary and described binding information for sending physics subband.
2. method according to claim 1, it is characterised in that the process of the HARQ processes of the UE is distributed in the acquisition
Number and process status include：
When HARQ process of the HARQ process types for PDCCH, the HARQ entities the current subband number for preserving with
In the binding information of HARQ contexts, with the subband number of the transmission physics subband for the corresponding HARQ contexts of index search,
And inquire about in the corresponding HARQ contexts with the presence or absence of the frame number with the ID and the transmission radio frames of eating dishes without rice or wine
The information for matching, if it is present being by the HARQ process numbers and HARQ process status in the corresponding HARQ contexts
Retransmission state is notified to the scheduler module；If it does not exist, then judging on the transmission physics subband in the hair of eating dishes without rice or wine
Send whether radio frames have the idle HARQ process of PDCCH, if it has, then by a process number for the idle HARQ process of PDCCH
And the configured information that process status is idle condition is sent to the scheduler module, if it is not, to the scheduler module
The busy configured information of return process；
When HARQ process of the HARQ process types for PDSCH, the HARQ entities the current subband number for preserving with
In the binding information of HARQ contexts, with the subband number of the transmission physics subband for the corresponding HARQ contexts of index search,
And inquire about in the corresponding HARQ contexts with the presence or absence of the frame number with the ID and the transmission radio frames of eating dishes without rice or wine
The information for matching, if it is present the HARQ process numbers and HARQ process status in the HARQ contexts that will be matched are
The configured information of retransmission state is sent to the scheduler module；If it does not exist, then judge it is described transmission physics subband on
It is described to eat dishes without rice or wine to send whether radio frames have the idle HARQ process of PDSCH, if it has, then the idle HARQ of a PDSCH is entered
The process number and process status of journey are notified to the scheduler module for the configured information of idle condition, if it is not, to institute
State scheduler module and return to the busy configured information of process.
3. method according to claim 1, it is characterised in that carrying out configuration to the HARQ processes includes：
When needs carry out re-transmission number in the transmission radio frames of eating dishes without rice or wine on the transmission physics subband using the HARQ processes
According to when, the data in caching are retransmitted and are sent to and eat dishes without rice or wine by the HARQ entities；
When need not it is described transmission physics subband on it is described eat dishes without rice or wine send radio frames be retransmitted using the HARQ processes
During data, if the HARQ processes are the HARQ processes of PDCCH, the HARQ processes to the PDCCH are configured, and storage should
The data that the HARQ processes of PDCCH are transmitted, if there is with the afoul PDSCH processes of the HARQ processes of the PDCCH, then will
The data transfer of the afoul PDSCH processes is prolonged after carrying out；
When need not it is described transmission physics subband on it is described eat dishes without rice or wine send radio frames be retransmitted using the HARQ processes
During data, if the HARQ processes are the HARQ processes of PDSCH, the HARQ processes to the PDSCH are configured, and storage should
The data that the HARQ processes of PDSCH are transmitted.
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| US8369424B2 (en) * | 2006-07-14 | 2013-02-05 | Qualcomm Incorporated | Frequency selective and frequency diversity transmissions in a wireless communication system |
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| WO2007105914A1 (en) * | 2006-03-14 | 2007-09-20 | Samsung Electronics Co., Ltd. | Apparatus and method for performing resource allocation and communication in a wireless communication system, and system using the same |
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