WO2012146032A1 - 一种基于分组的业务信道干扰消除调度方法、装置及系统 - Google Patents

一种基于分组的业务信道干扰消除调度方法、装置及系统 Download PDF

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Publication number
WO2012146032A1
WO2012146032A1 PCT/CN2011/084120 CN2011084120W WO2012146032A1 WO 2012146032 A1 WO2012146032 A1 WO 2012146032A1 CN 2011084120 W CN2011084120 W CN 2011084120W WO 2012146032 A1 WO2012146032 A1 WO 2012146032A1
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Prior art keywords
demodulation
batch
task
module
information
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PCT/CN2011/084120
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English (en)
French (fr)
Inventor
闫晓伟
丁杰伟
江德兴
刘丛丛
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中兴通讯股份有限公司
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Publication of WO2012146032A1 publication Critical patent/WO2012146032A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • H04B1/7097Interference-related aspects
    • H04B1/7103Interference-related aspects the interference being multiple access interference
    • H04B1/7107Subtractive interference cancellation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • H04B1/7097Interference-related aspects
    • H04B1/711Interference-related aspects the interference being multi-path interference
    • H04B1/7115Constructive combining of multi-path signals, i.e. RAKE receivers

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a packet-based traffic channel interference cancellation scheduling method, apparatus and system in a direct spread spectrum code division multiple access system. Background technique
  • WCDMA Wideband Code Division Multiple Access
  • uplinks distinguish different users by scrambling codes. Orthogonality between different users and different code channels of different users due to factors such as channel fading Will be damaged to varying degrees. This allows mutual interference between different code channels of different users and different users. The more users supported by the uplink, the greater the interference with a target user.
  • the 3GPP (3rd Generation Partnership Project) Release 6 protocol introduces HSUPA (High Speed Uplink Packet Access) technology, in order to support HSUPA technology, increase The EDCH channel allows a minimum SF ( Spreading Factor) of 2.
  • HSUPA High Speed Uplink Packet Access
  • 3GPP Release 7 introduces 16QAM (16 Quadrature Amplitude Modulation; hexadecimal quadrature amplitude modulation;). The smaller spreading factor and 16QAM improve the user's uplink transmission rate, but at the same time it also causes a larger interference.
  • Interference cancellation refers to reconstructing the interference signal of the interfering user, and then eliminating the interference signal from the received signal to reduce interference to the target user.
  • the gain of interference cancellation is related to two factors, one is that the interference eliminates the performance of the link level, and the other is that the interference cancels the performance of the system level scheduling.
  • Link-level performance depends on the correctness of the reconstruction information and the reliability of the parameters required for reconstruction.
  • System-level scheduling which refers to the full use of commercial systems Some software and hardware resources, select users who need interference cancellation, allocate all kinds of resources required for users who need interference cancellation, arrange the time and sequence of demodulation, decoding, reconstruction and elimination, and users who need interference cancellation. Selecting refactoring multipath, etc., makes the benefits of all kinds of users the most, and the gain of interference elimination is the largest.
  • the main object of the present invention is to provide a packet-based traffic channel interference cancellation scheduling method, apparatus, and system, which overcomes the limited resources available for demodulation, decoding, reconstruction, and bandwidth.
  • the number of reconstructed users without scheduling is small, the benefits between users are insufficient, and the interference cancellation gain is low.
  • the gain of interference cancellation is improved, and the capacity of the system is improved.
  • the present invention provides a traffic channel interference cancellation scheduling method, including:
  • Step 1 Put the user into the task list, assign the task to a different group (Batch), and issue various batches;
  • Step 2 Demodulate each task in the batch that is delivered;
  • Step 3 Decoding the task that completes the demodulation, re-encoding the correctly decoded user, collecting the Batch information, and selecting the multipath involved in the reconstruction;
  • Step 4 Perform reconstruction according to the batch information, the multipath information, and the recoded information to perform interference cancellation. Further, the step 1 includes:
  • Step 1.1 The demodulation resource available for initializing the traffic channel is 1;
  • Step 1.2 In each system time slot, classify different users according to service types, sort different users according to priorities, and put them into the task list;
  • Step 1.3 Determine whether the task list is empty. If it is non-empty, go to step 1.5. If it is empty, end the allocation of the demodulation resource.
  • Step 1.5 Select a task from the task list according to the priority level, determine whether the resource is allocated for the task, and if yes, go to step 1.6, otherwise, return to step 1.3;
  • Step 1.6 Allocating required resources for demodulating the task, and placing the task into a Batch of a specified type according to the type information of the task;
  • Step 1.7 Update the remaining demodulation resources, and subtract the resources required for the task demodulation from the available demodulation resources;
  • Step 1.8 Delete the task from the task list and return to step 1.3.
  • the step 1.2 further includes: setting a priority identifier (PriFlag) for each task; wherein, a PriFlag of 1 indicates that the task has a high priority, and a demodulation resource must be allocated, and a PriFlag of 0 indicates the task.
  • the priority is lower, and whether or not the demodulation resource is allocated is determined according to the resource usage and the task priority scheduling.
  • the determining whether the resource is allocated for the task is: determining whether the resource is allocated for the task according to the determining condition, and the resource is allocated by satisfying one condition:
  • Condition 1 The required resource for demodulation is less than or equal to the available demodulation resources;
  • Condition 2 The required resources for demodulation are larger than the available demodulation resources and the demodulation priority of the task is the highest.
  • step 3 includes:
  • Step 3.1 performing deinterleaving, decimation rate matching, hybrid automatic retransmission request combining, and decoding on the demodulated user;
  • Step 3.2 Obtain the number of tasks in the Batch ( TaskTotal ), set the correct time when collecting the Batch Task threshold TaskThld;
  • Step 3.3 Determine whether the batch to which the task belongs has been collected. If BathFlag is 1, the task is directly discarded. Otherwise, go to step 3.4.
  • Step 3.4 updating the task count completed by the decoding
  • Step 3.5 re-encoding the user who has completed decoding and decoding correctly, go to step 3.6, otherwise, go to step 3.7;
  • Step 3.6 Update the received correct task count, traverse each multipath of the task, if the energy of the multipath is greater than the reconstructed multipath selection threshold PathThld, select the multipath to participate in reconstruction and offset, otherwise discard the Multipath
  • Step 3.7 Determine whether the conditions for batch collection are satisfied, and if yes, deliver the Bath, otherwise, return to step 3.3.
  • step 3.7 the judgment of the batch collection completion is:
  • Condition 2 The number of correctly decoded users collected has reached a certain threshold
  • step 4 includes:
  • the corresponding waveform data is read from the data buffer, the reconstructed waveform data is subtracted from the waveform data, and the interference canceled waveform data is written into the data buffer at the corresponding position.
  • the present invention also provides a packet-based traffic channel interference cancellation scheduling apparatus, where the apparatus includes: a demodulation scheduling module and a cancellation scheduling module;
  • the demodulation scheduling module is configured to determine a priority of a user to allocate a demodulation resource, allocate a demodulation resource to the user, allocate users of different services to different batches, and deliver various types of patches to the elimination scheduling module. ;
  • the cancellation scheduling module is configured to: re-collect the batch information according to the batch information delivered by the demodulation scheduling module, the decoding status of each user in the batch, and adjust the interference cancellation user. Refactoring multipath information.
  • the demodulation scheduling module includes: an initial configuration module, configured to provide various types of information related to the batch, and available demodulation resource information, where the batch related information includes: the number of users in the batch, and demodulation for each user. Information, various types of Batch deliver priority.
  • the demodulation scheduling module includes: a user detection module, configured to detect a user, and determine a service type, a demodulation type, and a time offset relationship of each user.
  • the demodulation scheduling module further includes: a user classification module, configured to classify users of various service types according to the information provided by the user detection module.
  • the demodulation scheduling module further includes: a prioritization module, configured to sort the users of various types according to the information provided by the user detection module, and put the tasks into the order according to the priority from high to low. List.
  • the demodulation scheduling module further includes: a demodulation resource allocation module, configured to allocate demodulation resources according to the existing available demodulation resources and the priority of the user, and update the available demodulation resources after the allocation is completed.
  • a demodulation resource allocation module configured to allocate demodulation resources according to the existing available demodulation resources and the priority of the user, and update the available demodulation resources after the allocation is completed.
  • the demodulation scheduling module further includes: a batch building module, configured to put the task that has allocated the demodulation resource into different batches according to the service type of each task, until the task allocation of all allocated demodulation resources is performed. Finished, set up various types of Batch.
  • the demodulation scheduling module further includes: a batch delivery module, configured to send the assembled batches to the elimination scheduling module according to the category of the batch and the priority of the batch delivery.
  • the cancellation scheduling module includes: an initial configuration module, configured to provide batch related information, and available reconfiguration resource information, where the batch related information includes: a number of users in the batch, and multipath information.
  • the cancellation scheduling module further includes: a batch collection module, configured to collect a batch according to the batch information and the decoding result delivered by the demodulation scheduling module. Further, the cancellation scheduling module further includes: a reconstruction multipath selection module, configured to select a multipath that finally participates in reconstruction and cancellation according to available reconfiguration resource information, user and multipath information that needs to be reconstructed, and Multipath threshold.
  • the present invention further provides a packet-based traffic channel interference cancellation scheduling system, the system comprising: a traffic channel interference cancellation scheduling device, a traffic channel demodulation module, a decoding module, a re-encoding module, and a traffic channel interference cancellation module;
  • the traffic channel interference cancellation scheduling apparatus is configured to determine a priority of a user to allocate a demodulation resource, allocate a demodulation resource to the user, allocate users of different services to the task list, and assign the task to different batches, and Allocating various types of batches to the traffic channel demodulation module; and collecting the batch information according to the batch information sent by the demodulation scheduling module and the decoding situation of each user in the batch, and adjusting the interference of the interference cancellation user Multipath information is sent to the traffic channel interference cancellation module;
  • the traffic channel demodulation module is configured to demodulate each task in the batch delivered by the traffic channel interference cancellation scheduling device;
  • the decoding module is configured to decode a task for performing demodulation in the traffic channel demodulation module
  • the re-encoding module is configured to re-encode the correct decoding user of the decoding module; the traffic channel interference cancellation module is configured to re-encode the module according to the batch information, the multipath information, and the re-encoded information.
  • the user who completed the encoding performs reconstruction and performs interference cancellation.
  • system further includes:
  • the data buffer is used to buffer the waveform data required for demodulation and the waveform data after interference cancellation.
  • the present invention provides a method, a device and a system for scheduling traffic channel interference cancellation in a packet-based manner, which can save bandwidth resources occupied by reading and writing, and fully utilize existing demodulation, decoding, and heavy Structure resources, reasonably arrange the time points and order of user demodulation, It can effectively improve the interference cancellation gain and increase the system capacity.
  • FIG. 1 is a schematic diagram of a packet-based traffic channel interference cancellation scheduling system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a packet-based traffic channel interference cancellation scheduling apparatus according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a packet-based traffic channel interference cancellation method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of an offset scheduling provided by an embodiment of the present invention. detailed description
  • the basic idea of the present invention is: putting a user into a task list, assigning a task to a different group, and issuing various types of batches; demodulating each task in the issued batch; The task of the tuning is decoded, the coded user is re-encoded, the batch information is collected, and the multipath participating in the reconstruction is selected; the patch information, the multipath information, and the re-encoded information are reconstructed to perform interference cancellation.
  • an embodiment of the present invention provides a packet-based traffic channel interference cancellation scheduling system, where the system 100 includes: a traffic channel interference cancellation scheduling device 10, and a traffic channel demodulation The module 20, the decoding module 30, the re-encoding module 40, the traffic channel interference cancellation module 50, and the data buffer 60. among them,
  • the traffic channel interference cancellation scheduling apparatus 10 is configured to classify different users according to service types, sort different users according to a certain priority, put them into a task list (TaskList), and according to the service type of each task Task
  • the task task is allocated to different batches, and various types of batches are sent to the traffic channel demodulation module 20 according to the priority order; and the batch is collected according to the decoding situation of each user in the batch, and the collected batches are collected.
  • the information is sent to the traffic channel interference cancellation module 50.
  • the user and the reconstructed multipath of each user that need to perform interference cancellation are dynamically adjusted according to the condition of the reconstructed resource, and the information is sent to the traffic channel interference cancellation module 50.
  • the Batch here is a grouping concept, in which users with the same service satisfying a certain relationship in time offset are grouped in the same group, and users in the same group share the same piece of antenna data, so that only need to read once.
  • the data is saved and shared by each user without each user having to read it separately, thereby saving the bandwidth consumption of the read data.
  • the eliminated data is processed.
  • the data buffer 60 is uniformly written back, instead of being written once after each user offsets, thereby saving bandwidth consumption of the write data.
  • the traffic channel demodulation module 20 is configured to demodulate each Task in the Batch delivered by the traffic channel interference cancellation scheduling device 10.
  • the decoding module 30 is configured to perform de-interleaving, de-rate matching, HARQ (Hybrid Auto Repeat Request) combining and decoding on the task that is demodulated in the traffic channel demodulation module 20.
  • HARQ Hybrid Auto Repeat Request
  • the re-encoding module 40 is configured to re-encode the correct decoding of the decoding module 30.
  • the traffic channel interference cancellation module 50 is configured to reconstruct, according to the batch information, the multipath information, and the recoded information, the user who completes the encoding by the re-encoding module 40, and perform interference cancellation.
  • the data buffer 60 is configured to buffer waveform data required for demodulation, and waveform data after interference cancellation.
  • an embodiment of the present invention provides a packet-based traffic channel interference cancellation scheduling apparatus, where the apparatus 10 includes: a demodulation scheduling module 110 and an elimination scheduling module 140.
  • the demodulation scheduling module 110 is configured to determine a priority of the user to allocate the demodulation resource according to the number of users and the type of the user; allocate a demodulation resource to the user according to the priority of the demodulation resource allocated by the user, and the usage of the demodulation resource; Allocating users of different services to different batches, and allocating various types of batches to the traffic channel demodulation module 20 and the elimination scheduling module 140 according to the priority order.
  • the Batch here is a grouping concept. Users who have the same service and satisfy a certain relationship in time offset are grouped in the same group. Users in the same group share the same piece of antenna data, so that only data needs to be read once.
  • the demodulation scheduling module 110 includes: an initial configuration module 111, a user detection module 112, a user classification module 113, a prioritization module 114, a demodulation resource allocation module 115, a batch group modeling block 116, and a batch delivery module 117, wherein:
  • the initial configuration module 111 is configured to provide various types of information related to the batch, the available demodulation resource information, and the like.
  • the information related to the batch includes: the number of users in the batch, the demodulation information of each user, and the priority of each type of the batch. Wait.
  • the user detection module 112 is configured to detect users and determine a service type, a demodulation type, and a time offset relationship of each user.
  • the user classification module 113 is configured to classify users of various service types according to the information provided by the user detection module 112.
  • the prioritization module 114 is configured to sort the various types of users according to the information provided by the user detection module 112, and put them into the task list in order of priority from high to low.
  • the demodulation resource allocation module 115 is configured to evaluate resources required for demodulation of each task according to the service type, the spreading factor, and the multipath information of the task, and allocate solutions according to the existing available demodulation resources and the priority allocation of the user. The resource is adjusted, and the available demodulation resources are updated after the allocation is completed.
  • the batch building module 116 is configured to put the tasks for which the demodulation resources have been allocated in different batch according to the service type of each task, until all the tasks of the allocated demodulation resources are allocated, and various batches are formed.
  • the batch sending module 117 is configured to send the assembled batches to the traffic channel demodulation module 20 and the cancellation scheduling module 140 according to the category of the batch and the priorities of the batches.
  • the cancellation scheduling module 140 is configured to: according to the batch information sent by the batch issuing module 117, and the decoding status of each user in the batch, the decoding situation includes a time point and a result of decoding completion, and the batch is collected again, and the collection is collected.
  • the batch is sent to the traffic channel interference cancellation module 50.
  • the cancellation scheduling module 140 dynamically adjusts the resolving multipath of the user and each user that needs to perform interference cancellation according to the condition of the reconstructed resource, and sends the information to the service.
  • Channel interference cancellation module 50 is configured to: according to the batch information sent by the batch issuing module 117, and the decoding status of each user in the batch, the decoding situation includes a time point and a result of decoding completion, and the batch is collected again, and the collection is collected.
  • the batch is sent to the traffic channel interference cancellation module 50.
  • the cancellation scheduling module 140 dynamically adjusts the resolving multipath of the user and each user that needs to perform interference cancellation according to the condition of the re
  • the elimination scheduling module 140 includes: an initial configuration module 141, a batch collection module 142, and a reconstruction multipath selection module 143, wherein:
  • the initial configuration module 141 is configured to provide information about the batch related information, and the available reconstructed resources, where the batch related information includes: the number of users in the batch, and multipath information.
  • the batch collection module 142 is configured to collect a batch according to the batch information and the decoding result delivered by the demodulation scheduling module 117, and send the batch to the traffic channel interference cancellation module 50 after the batch is collected.
  • the reconstructing multipath selection module 143 is configured to select a multipath that ultimately participates in the reconfiguration and cancellation, and a multipath threshold according to available reconfigurable resources, user and multipath information that needs to be reconstructed, and send the information to the Traffic channel interference cancellation module 50.
  • the traffic channel interference cancellation module 50 performs reconfiguration multipath selection on each task in the Batch output by the Batch collection module 142 according to the multipath threshold output by the reconstruction multipath selection module 143.
  • the multipath energy of each task is greater than the selected threshold to participate in reconstruction and cancellation, otherwise the discard does not participate in reconstruction and 4th cancellation.
  • a flow of a packet-based traffic channel interference cancellation method according to an embodiment of the present invention is as follows:
  • Step 1 Demodulation scheduling module performs scheduling: The module schedules each system time slot once, and each type of user detects and classifies different types of users, prioritizes users, and allocates according to user priority and demodulation resource usage. And the demodulation resource is updated, and the user is allocated a batch of the demodulation resource, and the batch is sent to the service channel demodulation module according to a certain priority order.
  • Step 1.1 Initialize the service channel available demodulation resource (TDDLoad) to 1, wherein TDDLoad is 1 to indicate that all demodulation resources available in the system time slot. Because different system time slots need to deal with different demodulation tasks, some system time slots are more, some system time slots are less, and the requirements for demodulation resources are different. In order to balance the demodulation tasks between different system time slots, full use of demodulation Resources, you can initialize TDDLoad to a value greater than 1, such as 1.2.
  • Step 1.2 The demodulation scheduling module schedules each system time slot once. In each system time slot, the demodulation scheduling module classifies different users according to service types, and ranks different users according to a certain priority.
  • the demodulation scheduling module Into the task list (TaskList), wherein each task (Task) has a priority identifier (PriFlag), and a PriFlag of 1 indicates that the task has a high priority, and the demodulation resource is allocated without considering the use of the demodulation resource. If PriFlag is 0, the priority of the task is low. Whether to allocate demodulation resources depends on the resource usage and task priority. When creating a task list, you can assign a value to the tag as needed.
  • different classification and sorting methods can be selected according to the needs of different businesses, the benefit relationship between different users, and the like.
  • Step 1.3 Determine whether the TaskList is empty. If it is not empty, go to step 1.4. If it is empty, end the allocation of the demodulation resource.
  • Step 1.4 Select a task from the TaskList according to the priority level, and estimate the resource required for demodulation of the task traffic channel (TDDNeed).
  • the resources required for task demodulation are related to the processing capability of the demodulation resource, the type of service of the user, and the channel environment of the user.
  • the estimation method can be determined according to the resource model of the system. For example, according to the total number of demodulation resources, the service type of the user, and the multipath number, that is, different types of users, different SF code channels, different multipath numbers correspond to different demodulation resources, and then according to the user's traffic channel.
  • the number of code channels, the SF and the multipath number lookup table obtain the resources required for demodulation of the user traffic channel.
  • Step 1.5 Determine whether the condition for allocating resources for the task is met. If the condition is met, go to step 1.6. Otherwise, go to step 1.3.
  • the judgment conditions are as follows, and one of the conditions can be satisfied to allocate resources:
  • TDDLoad > TDDNeed, that is, the required resources for demodulation are less than or equal to the available demodulation resources;
  • Step 1.6 Allocate the required resources for the task, and put the task into the Batch of the specified type according to the type of the task and the like.
  • Step 1.7 Update the remaining demodulation resources, and subtract the resources required for the task demodulation from the available demodulation resources.
  • Step 1.8 Delete the task from the TaskList and go to step 1.3.
  • Step 2 a service channel demodulation module, the module demodulates the batch sent by the scheduling demodulation module, reads the waveform data required for demodulation from the data buffer, performs demodulation, and sends the demodulation to the decoding module. . Since the user of the same Batch has a certain relationship in time offset, the demodulation processing of all users in the same batch only needs to read the waveform data once and save it for sharing with each user to save the reading bandwidth consumption.
  • Step 3 The decoding module decodes the demodulated user, and the re-encoding module decodes the decoding.
  • the user who has decoded and decoded is re-encoded, and the elimination scheduling module starts collecting the Batch and selects the multipath that participates in the reconstruction.
  • the specific process is as follows (as shown in Figure 5):
  • Step 3.1 The decoding module performs deinterleaving, de-rate matching, HARQ merging, and decoding on the demodulated user, and then sends the re-encoding module and the batch collecting module to completion.
  • Step 3.2 Batch collection module obtains the number of tasks in Batch TaskTotal, set collection
  • the correct task threshold for Batch is TaskThld.
  • TaskThld The meaning of TaskThld is that when the number of correctly decoded tasks reaches the threshold TaskThld, the batch collection is considered complete and the collection continues.
  • Initialize the received task count TaskNum is 0, initialize the correct task count received.
  • TaskOK is 0, initialize the batch collection completion flag BathFlag is 0.
  • Step 3.3 Determine whether the batch to which the task belongs has been collected, if BathFlag is
  • step 3.4 the task is directly discarded, otherwise, go to step 3.4.
  • Step 3.4 Update the number of tasks completed by decoding, and TaskNum adds 1.
  • Step 3.5 The re-encoding module re-encodes the user who has decoded and decoded correctly, and proceeds to step 3.6, otherwise proceeds to step 3.7.
  • Step 3.6 TaskOK plus 1 , traverse each multipath of the task. If the energy of the multipath is greater than the reconstructed multipath selection threshold PathThld, select the path to participate in subsequent reconstruction and cancellation, otherwise discard the path. Setting the Reconstruction Multipath Selection Threshold The meaning of PathThld is that when the energy of the multipath is greater than or equal to the threshold PathThld, the path is selected to participate in the reconstruction, otherwise the improvement does not participate in the reconstruction.
  • Step 3.7 Determine whether the conditions for batch collection are satisfied. If yes, go to step 3.8. Otherwise, go to step 3.3.
  • the conditions for batch collection are as follows. If one of them is satisfied, the batch collection is completed:
  • Step 3.8 Batch collection is completed, set BathFlag to 1, and send the Bath to the business letter.
  • Channel interference cancellation module
  • Step 4 According to the Batch information outputted in the above step, the multipath information and the re-encoded information of the Batch output are reconstructed.
  • the specific process is:
  • the corresponding waveform data is read from the data buffer, the reconstructed waveform data is subtracted from the waveform data, and the interference canceled waveform data is written into the data buffer at the corresponding position. Since the users of the same batch have a certain relationship in time offset, all the users in the same batch are completely written into the data buffer after being offset, and the one-time write saves the bandwidth consumption of data writing.

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Description

一种基于分组的业务信道干扰消除调度方法、 装置及系统 技术领域
本发明涉及移动通信技术领域, 特别是涉及直接扩频码分多址系统中 基于分组的业务信道干扰消除调度方法、 装置及系统。 背景技术
WCDMA ( Wideband Code Division Multiple Access, 宽带码分多址)上 行链路通过扰码区分不同用户, 由于信道衰落等因素的影响, 不同用户之 间, 同一个用户的不同码道之间的正交性都会受到不同程度的破坏。 这使 得不同用户之间, 同一个用户的不同码道之间存在相互干扰。 上行支持的 用户越多, 对某一个目标用户的干扰就越大。
为了提高 WCDMA上行传输速率, 3GPP ( 3rd Generation partnership Project, 第三代合作伙伴计划 ) Release 6协议引入了 HSUPA ( High Speed Uplink Packet Access , 高速上行链路分组接入 )技术, 为了支持 HSUPA技 术, 增加了 EDCH信道, 允许最小的 SF ( Spreading Factor, 扩频因子)为 2。同时 3GPP Release 7引入了 16QAM( 16 Quadrature Amplitude Modulation , 16进制正交幅度调制;), 更小的扩频因子和 16QAM提高了用户的上行传输 速率, 但同时也对其他用户造成了更大的干扰。
为了提高上行用户的性能, 减少高速率用户对其他用户的干扰, 提高 整个小区的吞吐率, 提出了干扰消除技术。 干扰消除指的是对干扰用户的 干扰信号进行重构, 然后从接收信号中消除干扰信号, 以减少对目标用户 的干扰。 干扰消除的增益和两方面的因素有关, 一是干扰消除链路级的性 能, 二是干扰消除系统级调度的性能。 链路级性能取决于重构信息的正确 性和重构所需参数的可靠性。 系统级调度, 指的是充分利用商用系统中已 有的软硬件资源, 选择需要干扰消除的用户, 为需要干扰消除的用户分配 所需各类资源, 安排解调、 译码、 重构和消除的时间和顺序, 以及为需要 做干扰消除的用户选择重构多径等, 使得各类用户之间的受益最充分, 干 扰消除的增益最大。
目前商用系统中, 由于可用的解调、 译码、 重构、 带宽等资源都存在 着限制, 在这种情况下, 由于没有调度带来的重构用户数少, 用户之间受 益不充分, 干扰消除增益低等弊端。
所以, 为了充分利用商用系统中已有的软硬件资源, 满足各类用户的 指标需求, 提高干扰消除的增益, 进而提高整个系统的容量, 有必要对商 用系统中已有的软硬件资源进行合理分配, 对解调、 译码、 重构、 干扰消 除等过程进行调度。 发明内容
有鉴于此, 本发明的主要目的在于提供一种基于分组的业务信道干扰 消除调度方法、 装置及系统, 在可用的解调、 译码、 重构、 带宽等资源受 限的情况下, 克服了没有调度带来的重构用户数少, 用户之间受益不充分, 干扰消除增益低等弊端, 提高了干扰消除的增益, 提升了系统的容量。
为了解决以上技术问题, 本发明提供一种业务信道干扰消除调度方法, 包括:
步驟 1、 将用户放进任务列表中, 并将任务分配到不同的分组(Batch ) 中, 并下发各类 Batch;
步驟 2、 对下发的 Batch中各任务进行解调;
步驟 3、 对完成解调的任务进行译码, 对译码正确的用户重新编码, 收 集 Batch信息, 选择参与重构的多径;
步驟 4、 根据 Batch信息、 多径信息和重新编码后的信息进行重构, 进 行干扰消除。 进一步地, 所述步驟 1包括:
步驟 1.1、 初始化业务信道可用解调资源为 1 ;
步驟 1.2、 在每个系统时隙, 根据业务类型对不同用户进行分类, 按照 优先级对不同的用户进行排序, 放进任务列表;
步驟 1.3、 判断任务列表是否为空, 如果为非空, 转步驟 1.5 , 如果为 空, 结束本次解调资源的分配;
步驟 1.5、 从任务列表按优先级高低选取任务, 判断是否满足为所述任 务分配资源, 如果满足, 转步驟 1.6, 否则, 返回驟 1.3;
步驟 1.6、 为所述任务分配解调所需资源, 根据所述任务的类型信息将 所述任务放入指定类型的 Batch;
步驟 1.7、 更新剩余解调资源, 从可用解调资源中减去所述任务解调所 需资源;
步驟 1.8、 从任务列表中删除所述任务, 返回步驟 1.3。
进一步地, 所述步驟 1.2 还包括: 为每个任务设置一个优先级标识 ( PriFlag ); 其中, PriFlag为 1表示所述任务的优先级高, 必需分配解调资 源, PriFlag为 0表示所述任务优先级较低, 是否分配解调资源根据资源的 使用情况和任务优先级调度决定。
进一步地, 所述判断是否满足为所述任务分配资源为: 根据判断条件 判断是否满足为所述任务分配资源, 满足一个条件即可分配资源:
所述判断条件为: 条件 1 : 解调所需资源小于或等于可用解调资源; 条 件 2: 解调所需资源大于可用解调资源且所述任务的解调优先级最高。
进一步地, 所述步驟 3包括:
步驟 3.1、 对解调完毕的用户进行解交织、 解速率匹配、 混合自动重传 请求合并、 译码;
步驟 3.2、 获取 Batch中任务个数( TaskTotal ), 设定收集 Batch时正确 任务门限 TaskThld;
步驟 3.3、 判断任务所属的 Batch是否已经收集完成, 如果 BathFlag为 1 , 所述任务直接丟弃, 否则, 转步驟 3.4;
步驟 3.4、 更新译码完成的任务计数;
步驟 3.5、 对译码完成且译码正确的用户进行重新编码, 转步驟 3.6, 否则, 转步驟 3.7;
步驟 3.6、 更新收到的正确任务计数, 遍历所述任务的每条多径, 如果 多径的能量大于重构多径选择门限 PathThld, 选择所述多径参加重构和抵 消, 否则丟弃所述多径;
步驟 3.7、 判断是否满足 Batch收集完成的条件, 如果是, 将所述 Bath 下发, 否则, 返回驟 3.3。
进一步地, 步驟 3.7中, 所述 Batch收集完成的判断为:
条件 1: Batch包中所有 Task均已收集齐;
条件 2: 已收集的译码正确的用户数达到一定的门限;
满足其中一条即表示 Batch收集完成。
进一步地, 所述步驟 4包括:
从数据緩存器中读取相应的波形数据, 从所述波形数据中减去重构的 波形数据, 然后把干扰抵消后的波形数据写进相应位置的数据緩存器。
本发明还提供一种基于分组的业务信道干扰消除调度装置, 所述装置 包括: 解调调度模块和消除调度模块; 其中,
所述解调调度模块, 用于决定用户分配解调资源的优先级, 为用户分 配解调资源, 将不同业务的用户分配到不同的 Batch中, 并下发各类 Batch 给所述消除调度模块;
所述消除调度模块: 用于根据所述解调调度模块下发的 Batch信息、 Batch中各用户的译码情况, 重新收集 Batch信息, 以及调整干扰抵消用户 的重构多径信息。
进一步地, 所述解调调度模块包括: 初始配置模块, 用于提供 Batch 相关的各类信息、可用的解调资源信息,其中, Batch相关的信息包括: Batch 中用户数目、 每个用户解调信息、 各类 Batch下发优先级。
进一步地, 所述解调调度模块包括: 用户检测模块, 用于检测用户, 并确定各用户的业务类型、 解调类型和时间偏移关系。
进一步地, 所述解调调度模块还包括: 用户分类模块, 用于根据所述 用户检测模块提供的信息, 为各种业务类型的用户分类。
进一步地, 所述解调调度模块还包括: 优先级排序模块, 用于根据所 述用户检测模块提供的信息, 为各种类型的用户排序, 并按照优先级由高 到低的顺序放进任务列表。
进一步地, 所述解调调度模块还包括: 解调资源分配模块, 用于根据 现有可用解调资源的情况和用户的优先级分配解调资源, 分配完成后更新 可用的解调资源。
进一步地, 所述解调调度模块还包括: Batch组建模块, 用于根据每个 任务的业务类型将已经分配解调资源的任务放在不同的 Batch中,直至所有 已分配解调资源的任务分配完毕, 组建各类 Batch。
进一步地,所述解调调度模块还包括: Batch下发模块,用于根据 Batch 的类别和各类 Batch下发的优先级,将组建的各类 Batch下发给所述消除调 度模块。
进一步地, 所述消除调度模块包括: 初始配置模块, 用于提供 Batch 相关信息, 以及可用的重构资源信息, 其中, Batch相关信息包括: Batch 中的用户数目、 多径信息。
进一步地, 所述消除调度模块还包括: Batch收集模块, 用于根据解调 调度模块下发的 Batch信息和译码结果收集 Batch。 进一步地, 所述消除调度模块还包括: 重构多径选择模块, 用于根据 可用的重构资源信息、 需要重构的用户和多径信息, 选择最终参加重构和 抵消的多径, 以及多径门限。
本发明还提供一种基于分组的业务信道干扰消除调度系统, 所述系统 包括: 业务信道干扰消除调度装置、 业务信道解调模块、 译码模块、 重新 编码模块、 业务信道干扰消除模块; 其中,
所述业务信道干扰消除调度装置, 用于决定用户分配解调资源的优先 级, 为用户分配解调资源, 将不同业务的用户分配到任务列表中, 并将任 务分配到不同的 Batch中, 并下发各类 Batch给所述业务信道解调模块; 以 及根据所述解调调度模块下发的 Batch信息、 Batch中各用户的译码情况, 重新收集 Batch信息,以及调整干扰抵消用户的重构多径信息下发给所述业 务信道干扰消除模块;
所述业务信道解调模块, 用于对所述业务信道干扰消除调度装置下发 的 Batch中各任务进行解调;
所述译码模块, 用于对所述业务信道解调模块中完成解调的任务进行 译码;
所述重新编码模块, 用于对所述译码模块的译码正确的用户重新编码; 所述业务信道干扰消除模块, 用于根据 Batch信息、 多径信息和重新编 码后的信息对重新编码模块完成编码的用户进行重构, 进行干扰消除。
进一步地, 所述系统还包括:
数据緩存器, 用于緩存解调所需的波形数据, 以及干扰抵消后的波形 数据。
与现有技术相比较, 本发明提出了基于分组的方式对业务信道干扰消 除进行调度的方法、 装置及系统, 可以节省读写占用的带宽资源, 充分利 用已有的解调、 译码、 重构等资源, 合理安排用户解调的时间点和顺序, 能有效提高干扰消除增益, 提高系统容量。 附图说明
此处所说明的附图用来提供对本发明的进一步理解, 构成本发明的一 部分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发 明的不当限定。 在附图中:
图 1是本发明实施例提供的基于分组的业务信道干扰消除调度系统的 示意图;
图 2是本发明实施例提供的基于分组的业务信道干扰消除调度装置的 示意图;
图 3是本发明实施例提供的基于分组的业务信道干扰消除方法的流程 图;
图 4是本发明实施例提供的解调调度的流程图;
图 5是本发明实施例提供的抵消调度的流程图。 具体实施方式
本发明的基本思想是: 将用户放进任务列表中, 并将任务分配到不同 的分组( Batch )中, 并下发各类 Batch;对下发的 Batch中各任务进行解调; 对完成解调的任务进行译码 ,对译码正确的用户重新编码 ,收集 Batch信息 , 选择参与重构的多径;根据 Batch信息、 多径信息和重新编码后的信息进行 重构, 进行干扰消除。
为了使本发明所要解决的技术问题、 技术方案及有益效果更加清楚、 明白, 以下结合附图和实施例, 对本发明进行进一步详细说明。 应当理解, 此处所描述的具体实施例仅用以解释本发明, 并不用于限定本发明。
如图 1 所示, 本发明实施例提供一种基于分组的业务信道干扰消除调 度系统, 该系统 100包括: 业务信道干扰消除调度装置 10、 业务信道解调 模块 20、 译码模块 30、 重新编码模块 40、 业务信道干扰消除模块 50、 数 据緩存器 60。 其中,
业务信道干扰消除调度装置 10, 用于根据业务类型对不同的用户进行 分类,按照一定的优先级对不同的用户进行排序,放进任务列表( TaskList ), 并根据每个任务 Task的业务类型将任务 Task分配到不同的分组( Batch ) 中, 并按照优先级顺序下发各类 Batch给业务信道解调模块 20; 以及根据 Batch中各用户的译码情况重新收集 Batch, 将收集齐的 Batch下发给业务 信道干扰消除模块 50; 同时还根据重构资源的情况动态调整需要做干扰抵 消的用户和每个用户的重构多径, 并将该信息下发给业务信道干扰消除模 块 50。 其中, 此处的 Batch是一个分组的概念, 是将具有相同业务的在时 间偏移上满足一定关系的用户分在同一组中, 同一组中的用户共享同一段 天线数据, 这样只需要读一次数据, 并保存起来供各用户共用, 而无需每 个用户单独去读, 从而节省了读数据的带宽消耗; 同时, 在同一组中的所 有用户干扰消除都处理完毕后,才把消除后的数据统一写回数据緩存器 60, 而不是每个用户抵消完后写一次, 从而节省了写数据的带宽消耗。
业务信道解调模块 20, 用于对业务信道干扰消除调度装置 10 下发的 Batch中各 Task进行解调。
译码模块 30, 用于对业务信道解调模块 20中完成解调的 Task进行解 交织、 解速率匹配、 HARQ ( Hybrid Auto Repeat Request, 混合自动重传请 求)合并和译码。
重新编码模块 40 , 用于对译码模块 30的译码正确的用户重新编码。 业务信道干扰消除模块 50, 用于根据 Batch信息、 多径信息和重新编 码后的信息对重新编码模块 40完成编码的用户进行重构, 进行干扰消除。
数据緩存器 60, 用于緩存解调所需的波形数据, 以及干扰抵消后的波 形数据。 如图 2所示, 本发明实施例提供一种基于分组的业务信道干扰消除调 度装置, 该装置 10包括: 解调调度模块 110和消除调度模块 140。
解调调度模块 110, 用于根据用户数量、 用户类型决定用户分配解调资 源的优先级; 根据用户分配解调资源的优先级, 以及解调资源的使用情况 为用户分配解调资源; 根据解调资源的分配情况, 以及用户之间的时间偏 移关系,将不同业务的用户分配到不同的 Batch中,并按照优先级顺序下发 各类 Batch给业务信道解调模块 20和消除调度模块 140。 此处的 Batch是 一个分组的概念, 是将具有相同业务的在时间偏移上满足一定关系的用户 分在同一组中, 同一组中的用户共享同一段天线数据, 这样只需要读一次 数据, 并保存起来供各用户共用, 而无需每个用户单独去读, 从而节省了 读数据的带宽消耗; 同时, 在同一组中的所有用户干扰消除都处理完毕后, 才把消除后的数据统一写回数据緩存器 60, 而不是每个用户抵消完后写一 次, 从而节省了写数据的带宽消耗。
解调调度模块 110包括: 初始配置模块 111、 用户检测模块 112、 用户 分类模块 113、 优先级排序模块 114、 解调资源分配模块 115、 Batch组建模 块 116、 Batch下发模块 117, 其中:
初始配置模块 111 , 用于提供 Batch相关的各类信息、 可用的解调资源 信息等; 其中, Batch相关的信息包括: Batch中用户数目、 每个用户解调 信息、 各类 Batch下发优先级等。
用户检测模块 112, 用于检测用户, 并确定各用户的业务类型、 解调类 型和时间偏移关系。
用户分类模块 113 , 用于根据用户检测模块 112提供的信息, 为各种业 务类型的用户分类。
优先级排序模块 114, 用于根据用户检测模块 112提供的信息, 为各种 类型的用户排序, 并按照优先级由高到低的顺序放进任务列表。 解调资源分配模块 115 , 用于根据任务的业务类型、扩频因子和多径信 息评估每个任务解调所需的资源, 并根据现有可用解调资源的情况和用户 的优先级分配解调资源, 分配完成后更新可用的解调资源。
Batch组建模块 116, 用于根据每个任务的业务类型将已经分配解调资 源的任务放在不同的 Batch中, 直至所有已分配解调资源的任务分配完毕, 组建各类 Batch。
Batch下发模块 117, 用于根据 Batch的类别和各类 Batch下发的优先 级, 将组建的各类 Batch下发给业务信道解调模块 20和消除调度模块 140。
消除调度模块 140, 用于根据 Batch下发模块 117下发的 Batch信息、 Batch中各用户的译码情况, 所述译码情况包括译码完成的时间点和结果, 重新收集 Batch, 将收集齐的 Batch下发给业务信道干扰消除模块 50; 同时 该消除调度模块 140根据重构资源的情况动态调整需要做干扰抵消的用户 和每个用户的重构多径, 并将该信息下发给业务信道干扰消除模块 50。
消除调度模块 140包括: 初始配置模块 141、 Batch收集模块 142、 重 构多径选择模块 143 , 其中:
初始配置模块 141 , 用于提供 Batch相关信息, 以及可用的重构资源等 信息; 其中, Batch相关信息包括: Batch中的用户数目、 多径信息。
Batch收集模块 142, 用于根据解调调度模块 117下发的 Batch信息和 译码结果收集 Batch, Batch收集完毕后将该 Batch送给业务信道干扰消除 模块 50。
重构多径选择模块 143 , 用于根据可用的重构资源、 需要重构的用户和 多径信息, 选择最终参加重构和抵消的多径, 以及多径门限, 并将该信息 下发给业务信道干扰消除模块 50。
业务信道干扰消除模块 50根据重构多径选择模块 143输出的多径门 限, 对 Batch收集模块 142输出的 Batch中各个任务进行重构多径选择, 即 每一任务的多径能量大于该门限的选中参与重构和抵消, 否则丟弃不参与 重构和 4氏消。
如图 3 所示, 本发明实施例提供的一种基于分组的业务信道干扰消除 方法的流程, 如下所述:
步驟 1、 解调调度模块进行调度: 该模块每个系统时隙调度一次, 每次 调度检测并分类不同类型的用户, 对用户进行优先级排序, 根据用户优先 级和解调资源的使用情况分配并更新解调资源, 对已分配解调资源的用户 组建 Batch, 并按照一定的优先级顺序下发 Batch到业务信道解调模块。
详细过程如下所述(如图 4所示;):
步驟 1.1、 初始化业务信道可用解调资源 (TDDLoad ) 为 1 , 其中, TDDLoad为 1表示该系统时隙全部可用解调资源。 因为不同系统时隙需要 处理的解调任务不同, 有些系统时隙多, 有些系统时隙少, 对解调资源的 需求不同, 为了均衡不同系统时隙之间的解调任务, 充分利用解调资源, 可以把 TDDLoad初始化为大于 1的值, 例如 1.2。
步驟 1.2、 解调调度模块每个系统时隙调度一次, 在每个系统时隙, 该 解调调度模块根据业务类型对不同的用户进行分类, 按照一定的优先级对 不同的用户进行排序, 放进任务列表(TaskList ), 其中, 每个任务(Task ) 都有一个优先级标识(PriFlag ), PriFlag为 1表示该任务的优先级高, 不需 要考虑解调资源的使用情况均分配解调资源, PriFlag为 0表示该任务优先 级较低, 是否分配解调资源需根据资源的使用情况和任务优先级等调度决 定。 在创建任务列表的时候, 可根据需要给该标识赋值。 此处可以根据不 同业务的需求, 不同用户之间的受益关系等因素选择不同的分类和排序方 法。
步驟 1.3、 判断 TaskList是否为空, 如果非空, 则转步驟 1.4, 如果为 空, 则结束本次解调资源的分配。 步驟 1.4、 从 TaskList按优先级高低选取任务, 并估计该任务业务信道 解调所需资源(TDDNeed )。 任务解调所需资源与解调资源的处理能力、 用 户的业务类型、 用户的信道环境等因素有关, 具体可以根据系统的资源模 型确定估计方法。 例如, 根据解调资源总数、 用户的业务类型和多径数目 建模, 即不同的类型的用户、 不同 SF的码道, 不同的多径数目对应不同的 解调资源, 然后根据用户的业务信道码道数、 SF和多径数目查表获取该用 户业务信道解调所需资源。
步驟 1.5、 判断是否满足为该任务分配资源的条件, 如果满足条件, 则 转步驟 1.6, 否则, 转步驟 1.3。 判断条件如下, 满足其中一个条件即可分 配资源:
( 1 ) TDDLoad >= TDDNeed, 即解调所需资源小于或等于可用解调资 源;
( 2 ) TDDLoad < TDDNeed & PriFlag==l , 即解调所需资源大于可用解 调资源且该任务的解调优先级最高。
步驟 1.6、 为该任务分配解调所需资源, 根据该任务的类型等信息将该 任务放入指定类型的 Batch。
步驟 1.7、 更新剩余解调资源, 从可用解调资源中减去该任务解调所需 资源。
步驟 1.8、 从 TaskList中删除该任务, 转步驟 1.3。
步驟 2、 业务信道解调模块, 该模块对调度解调模块下发的 Batch进行 解调, 从数据緩存器读取解调所需的波形数据进行解调, 解调完成后送给 译码模块。 由于此处同一 Batch 的用户在时间偏移上有一定的关系, 同一 Batch中所有用户的解调处理只需读取一次波形数据,保存起来供各用户共 享使用, 以节省读数带宽消耗。
步驟 3、译码模块对解调完毕的用户进行译码, 重新编码模块对译码完 成且译码正确的用户进行重新编码, 以及消除调度模块开始收集 Batch, 并 选择参与重构的多径。 具体过程如下所述(如图 5所示):
步驟 3.1、译码模块对解调完毕的用户进行解交织、解速率匹配、 HARQ 合并、 译码, 完成后送给重新编码模块和 Batch收集模块。
步驟 3.2、 Batch收集模块获取 Batch中任务个数 TaskTotal, 设定收集
Batch时正确任务门限 TaskThld,该门限 TaskThld的意义是, 当收集到的正 确译码的任务个数达到该门限 TaskThld时, 认为 Batch收集完成, 停止继 续收集。 初始化收到的任务计数 TaskNum为 0, 初始化收到的正确任务计 数 TaskOK为 0, 初始化 Batch收集完成的标志 BathFlag为 0。
步驟 3.3、 判断任务所属的 Batch是否已经收集完成, 如果 BathFlag为
1 , 则该任务直接丟弃, 否则, 转步驟 3.4。
步驟 3.4、 更新译码完成的任务数, TaskNum加 1。
步驟 3.5、 重新编码模块对译码完成且译码正确的用户进行重新编码, 转步驟 3.6, 否则转步驟 3.7。
步驟 3.6、 TaskOK加 1 , 遍历该任务的每条多径, 如果多径的能量大于 重构多径选择门限 PathThld, 选择该径参加后续的重构和抵消, 否则丟弃 该径。 设定重构多径选择门限 PathThld的意义是, 当多径的能量大于或等 于该门限 PathThld时, 选择该径参与重构, 否则改进不参与重构。
步驟 3.7、 判断是否满足 Batch收集完成的条件, 如果是, 转步驟 3.8, 否则, 转步驟 3.3。 Batch收集完成的条件如下, 满足其中一条即表示 Batch 收集完成:
( 1 ) TaskNum= =TaskTotal, 即 Batch包中所有 Task均已收集齐;
( 2 ) TaskOK==TaskThld , 即已收集译码正确的用户数达到正确任务门 限。
步驟 3.8、 Batch收集完成, 将 BathFlag置为 1 , 将该 Bath送给业务信 道干扰消除模块。
步驟 4、 根据上面步驟输出的 Batch信息, 多径信息和 Batch输出的重 新编码后的信息进行重构。 具体过程为:
从数据緩存器中读取相应的波形数据, 从该波形数据中减去重构的波 形数据, 然后把干扰抵消后的波形数据写进相应位置的数据緩存器。 由于 此处同一 Batch的用户在时间偏移上有一定的关系, 同一 Batch中的所有用 户抵消完毕后, 统一写进数据緩存器, 一次性写入节省了数据写入的带宽 消耗。
上述说明示出并描述了本发明的优选实施例, 但如前所述, 应当理解 本发明并非局限于本文所披露的形式, 不应看作是对其他实施例的排除, 而可用于各种其他组合、 修改和环境, 并能够在本文所述发明构想范围内, 通过上述教导或相关领域的技术或知识进行改动。 而本领域人员所进行的 改动和变化不脱离本发明的精神和范围, 则都应在本发明所附权利要求的 保护范围内。

Claims

权利要求书
1、 一种业务信道干扰消除调度方法, 其特征在于, 该方法包括: 步驟 1、 将用户放进任务列表, 并将任务分配到不同的分组(Batch ), 并下发各类 Batch;
步驟 2、 对下发的 Batch中各任务进行解调;
步驟 3、 对完成解调的任务进行译码, 对译码正确的用户重新编码, 收 集 Batch信息, 选择参与重构的多径;
步驟 4、 根据 Batch信息、 多径信息和重新编码后的信息进行重构, 进 行干扰消除。
2、 如权利要求 1所述的方法, 其特征在于, 所述步驟 1包括: 步驟 1.1、 初始化业务信道可用解调资源为 1 ;
步驟 1.2、 在每个系统时隙, 根据业务类型对不同用户进行分类, 按照 优先级对不同的用户进行排序, 放进任务列表;
步驟 1.3、 判断任务列表是否为空, 如果为非空, 转步驟 1.5 , 如果为 空, 结束本次解调资源的分配;
步驟 1.5、 从任务列表按优先级高低选取任务, 判断是否满足为所述任 务分配资源, 如果满足, 则转步驟 1.6, 否则, 返回步驟 1.3;
步驟 1.6、 为所述任务分配解调所需资源, 根据所述任务的类型信息将 所述任务放入指定类型的 Batch;
步驟 1.7、 更新剩余解调资源, 从可用解调资源中减去所述任务解调所 需资源;
步驟 1.8、 从任务列表中删除所述任务, 返回步驟 1.3。
3、 如权利要求 2所述的方法, 其特征在于, 所述步驟 1.2还包括: 为每个任务设置一个优先级标识(PriFlag ); 其中, PriFlag为 1表示所 述任务的优先级高, 必需分配解调资源, PriFlag为 0表示所述任务优先级 较低, 是否分配解调资源根据资源的使用情况和任务优先级调度决定。
4、 如权利要求 2所述的方法, 其特征在于, 所述判断是否满足为所述 任务分配资源为: 根据判断条件判断是否满足为所述任务分配资源, 满足 一个条件即可分配资源:
所述判断条件为: 条件 1 : 解调所需资源小于或等于可用解调资源; 条 件 2: 解调所需资源大于可用解调资源且所述任务的解调优先级最高。
5、 如权利要求 1所述的方法, 其特征在于, 所述步驟 3包括: 步驟 3.1、 对解调完毕的用户进行解交织、 解速率匹配、 混合自动重传 请求合并、 译码;
步驟 3.2、 获取 Batch中任务个数( TaskTotal ), 设定收集 Batch时正确 任务门限 TaskThld;
步驟 3.3、 判断任务所属的 Batch是否已经收集完成, 如果 BathFlag为 1 , 所述任务直接丟弃, 否则, 转步驟 3.4;
步驟 3.4、 更新译码完成的任务计数;
步驟 3.5、 对译码完成且译码正确的用户进行重新编码, 转步驟 3.6, 否则, 转步驟 3.7;
步驟 3.6、 更新收到的正确任务计数, 遍历所述任务的每条多径, 如果 多径的能量大于重构多径选择门限 PathThld, 选择所述多径参加重构和抵 消, 否则丟弃所述多径;
步驟 3.7、 判断是否满足 Batch收集完成的条件, 如果是, 将所述 Bath 下发, 否则, 返回步驟 3.3。
6、 如权利要求 5所述的方法, 其特征在于, 所述 Batch收集完成的判 断条件为:
条件 1: Batch包中所有 Task均已收集齐;
条件 2: 已收集的译码正确的用户数达到一定的门限; 满足其中一条即表示 Batch收集完成。
7、 如权利要求 1所述的方法, 其特征在于, 所述步驟 4中包括: 从数据緩存器中读取相应的波形数据, 从所述波形数据中减去重构的 波形数据, 然后把干扰抵消后的波形数据写进相应位置的数据緩存器。
8、 一种基于分组的业务信道干扰消除调度装置, 其特征在于, 所述装 置包括: 解调调度模块和消除调度模块; 其中,
所述解调调度模块, 用于决定用户分配解调资源的优先级, 为用户分 配解调资源, 将不同业务的用户分配到不同的 Batch中, 并下发各类 Batch 给所述消除调度模块;
所述消除调度模块: 用于根据所述解调调度模块下发的 Batch信息、 Batch中各用户的译码情况, 重新收集 Batch信息, 以及调整干扰抵消用户 的重构多径信息。
9、 如权利要求 8所述的装置, 其特征在于, 所述解调调度模块包括: 初始配置模块, 用于提供 Batch相关的各类信息、 可用的解调资源信息, 其 中, Batch相关的信息包括: Batch中用户数目、 每个用户解调信息、 各类 Batch下发优先级。
10、 如权利要求 8所述的装置, 其特征在于, 所述解调调度模块包括: 用户检测模块, 用于检测用户, 并确定各用户的业务类型、 解调类型和时 间偏移关系。
11、 如权利要求 10所述的装置, 其特征在于, 所述解调调度模块还包 括: 用户分类模块, 用于根据所述用户检测模块提供的信息, 为各种业务 类型的用户分类。
12、 如权利要求 10所述的装置, 其特征在于, 所述解调调度模块还包 括: 优先级排序模块, 用于根据所述用户检测模块提供的信息, 为各种类 型的用户排序, 并按照优先级由高到低的顺序放进任务列表。
13、 如权利要求 12所述的装置, 其特征在于, 所述解调调度模块还包 括: 解调资源分配模块, 用于根据现有可用解调资源的情况和用户的优先 级分配解调资源, 分配完成后更新可用的解调资源。
14、 如权利要求 13所述的装置, 其特征在于, 所述解调调度模块还包 括: Batch组建模块, 用于根据每个任务的业务类型将已经分配解调资源的 任务放在不同的 Batch中, 直至所有已分配解调资源的任务分配完毕,组建 各类 Batch。
15、 如权利要求 14所述的装置, 其特征在于, 所述解调调度模块还包 括: Batch下发模块, 用于根据 Batch的类别和各类 Batch下发的优先级, 将组建的各类 Batch下发给所述消除调度模块。
16、 如权利要求 8所述的装置, 其特征在于, 所述消除调度模块包括: 初始配置模块,用于提供 Batch相关信息,以及可用的重构资源信息,其中, Batch相关信息包括: Batch中的用户数目、 多径信息。
17、 如权利要求 16所述的装置, 其特征在于, 所述消除调度模块还包 括: Batch收集模块, 用于根据解调调度模块下发的 Batch信息和译码结果 收集 Batch。
18、 如权利要求 16所述的装置, 其特征在于, 所述消除调度模块还包 括: 重构多径选择模块, 用于根据可用的重构资源信息、 需要重构的用户 和多径信息, 选择最终参加重构和抵消的多径, 以及多径门限。
19、 一种基于分组的业务信道干扰消除调度系统, 其特征在于, 所述 系统包括: 如权利要求 8所述的业务信道干扰消除调度装置、 业务信道解 调模块、 译码模块、 重新编码模块、 业务信道干扰消除模块; 其中,
所述业务信道干扰消除调度装置, 用于决定用户分配解调资源的优先 级, 为用户分配解调资源, 将不同业务的用户分配到任务列表中, 并将任 务分配到不同的 Batch中, 并下发各类 Batch给所述业务信道解调模块; 以 及根据所述解调调度模块下发的 Batch信息、 Batch中各用户的译码情况, 重新收集 Batch信息,以及调整干扰抵消用户的重构多径信息下发给所述业 务信道干扰消除模块;
所述业务信道解调模块, 用于对所述业务信道干扰消除调度装置下发 的 Batch中各任务进行解调;
所述译码模块, 用于对所述业务信道解调模块中完成解调的任务进行 译码;
所述重新编码模块, 用于对所述译码模块的译码正确的用户重新编码; 所述业务信道干扰消除模块,用于根据 Batch信息、多径信息和重新编 码后的信息对重新编码模块完成编码的用户进行重构, 进行干扰消除。
20、 如权利要求 19所述的系统, 其特征在于, 所述系统还包括: 数据緩存器, 用于緩存解调所需的波形数据, 以及干扰抵消后的波形 数据。
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