WO2012163109A1 - 资源调度方法、装置和系统 - Google Patents

资源调度方法、装置和系统 Download PDF

Info

Publication number
WO2012163109A1
WO2012163109A1 PCT/CN2012/071384 CN2012071384W WO2012163109A1 WO 2012163109 A1 WO2012163109 A1 WO 2012163109A1 CN 2012071384 W CN2012071384 W CN 2012071384W WO 2012163109 A1 WO2012163109 A1 WO 2012163109A1
Authority
WO
WIPO (PCT)
Prior art keywords
resource
scheduling
base station
retention period
timer
Prior art date
Application number
PCT/CN2012/071384
Other languages
English (en)
French (fr)
Inventor
文敏
阮玉峰
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012163109A1 publication Critical patent/WO2012163109A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling

Definitions

  • the present invention relates to a 3G network Long Term Evolution (LTE) system, and in particular, to a resource scheduling method, apparatus and system under non-full load conditions.
  • LTE Long Term Evolution
  • the dynamic scheduling of the LTE enables the system to be based on a channel state indicator (CQI, Channel Quality Indicator) fed back by a User Equipment (UE) Uplink Control Channel (PUC) or a Physical Uplink Shared Channel (PUSCH).
  • CQI Channel Quality Indicator
  • UE User Equipment
  • PUC Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • MCS modulation and coding schemes
  • Information reasonable resource allocation and scheduling, so as to transmit more accurately and efficiently.
  • the LTE downlink system Downlink
  • the interference on the physical resource block mainly comes from the neighboring cell base station
  • the possible interference source location is determined. If the system is in a full load state and the bandwidth is fully utilized, the interference condition on the physical resource block of the local cell. Basically stable
  • the dynamic scheduling and resource allocation of the LTE system easily lead to interference hopping, which degrades performance.
  • the variable space of resource allocation is relatively large.
  • the physical resource location allocated by the scheduling UE of the neighboring cell is prone to hopping, so that the scheduling time is before and after.
  • the same-frequency interference power of the neighboring cell received by the same physical resource in the cell is also prone to hopping, so that the SINR (Signal to Interference Noise Ratio) fluctuates greatly, as shown in FIG.
  • the invention provides a resource scheduling method, device and system, which solves the problem of system performance degradation caused by SINR fluctuation under non-full load.
  • a resource scheduling method includes:
  • the base station in the non-full load state schedules the UE accessing the base station, allocates resources for the UE, and allocates a scheduling timer to the UE;
  • the scheduling timer is timed according to a preset resource retention period, where the length of the resource retention period is greater than a transmission time interval (TTI);
  • TTI transmission time interval
  • the resources allocated by the base station to the UE are released.
  • the foregoing resource scheduling method further includes:
  • the UE continuously occupies resources allocated by the base station for it.
  • the foregoing resource scheduling method further includes:
  • the setting the resource retention period according to the detection result is:
  • the resource retention period interval is adjusted according to the detection result, and the upper and lower limits of the resource retention period interval are increased when the SINR value fluctuates greatly, and the upper and lower limits of the resource retention period interval are decreased when the SINR value fluctuation is small;
  • a value is randomly selected from the period of the resource retention period interval as the resource retention period scheduled for the UE.
  • the base station in the non-full load state allocates resources for the UE accessing the base station to perform scheduling: scheduling the UE that initially accesses the base station; or
  • the UE that has occupied the released resources is dynamically scheduled.
  • the foregoing resource scheduling method further includes:
  • the present invention also provides a resource scheduling apparatus, including a resource allocation module, a scheduling timer, and a resource release module;
  • the resource allocation module is configured to: schedule, by a base station in a non-full load state, a UE that accesses the base station, allocate resources to the UE, and allocate the scheduling timer to the UE;
  • the scheduling timer is set to: time according to a preset resource retention period, where the length of the resource retention period is greater than ⁇ ;
  • the resource release module is configured to: after the scheduling timer expires, release resources allocated by the base station to the UE.
  • the resource scheduling apparatus further includes: a resource retention period management module, configured to: detect an SINR, and set the resource retention period according to the detection result.
  • a resource retention period management module configured to: detect an SINR, and set the resource retention period according to the detection result.
  • the present invention also provides a resource scheduling system, including a base station and at least one UE accessing the base station;
  • the base station is configured to: when in a non-full load state, schedule the UE that accesses the base station, allocate resources for the UE, and allocate a scheduling timer to the UE, where the scheduling timer is based on After the resource retention period is timed, the resources allocated by the base station to the UE are released, and the length of the resource retention period is greater than ⁇ .
  • the UE is configured to: when the scheduling timer performs timing according to the preset resource retention period, continuously occupy resources allocated by the base station for the base station.
  • the present invention provides a resource scheduling method, apparatus, and system, in which a base station in a non-full load state schedules a UE accessing the base station, allocates resources for the UE, and allocates a scheduling timer to the UE,
  • the scheduling timer is timed according to a preset resource retention period, where the length of the resource retention period is greater than ⁇ , and after the scheduling timer expires, the resources allocated by the base station to the UE are released, and implemented in one
  • the resource usage status of the resource retention period is longer than that of the scheduling, which stabilizes the synchronization interference of the neighboring cell and solves the problem of system performance degradation caused by SINR fluctuation under non-full load.
  • Figure 1 is a graph showing changes in received SINR and TTI for different UEs
  • FIG. 2 is a flowchart of a resource scheduling method according to Embodiment 1 of the present invention.
  • FIG. 3 is a state transition diagram of a UE in Embodiment 1 of the present invention.
  • Figure 4 is a schematic diagram of the UE switching between a silent state and a re-matched state
  • FIG. 5 is a flowchart of a resource scheduling method according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic diagram of multi-UE scheduling in a non-full load state according to an embodiment of the present invention
  • FIG. 7 is a flowchart of a resource scheduling method according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic structural diagram of a resource scheduling apparatus according to Embodiment 4 of the present invention.
  • the current main solution is to limit the bandwidth usage range of different cells through static spectrum division, and limit the bandwidth of different cells by static spectrum division.
  • the range of use can stabilize the co-channel interference of neighboring cells to a certain extent and reduce the fluctuation of SINR.
  • the static limited spectrum range makes it impossible for a cell to fully utilize the full-bandwidth spectrum resources, and it is not suitable for real-time scheduling according to channel changes.
  • the UE allocates the most suitable resources, which reduces the multi-UE frequency selection scheduling gain, thereby reducing system performance.
  • the embodiment of the present invention provides a resource scheduling method.
  • the process of using the method to perform resource scheduling under a non-full load state is as shown in FIG. 2, and includes:
  • Step 201 A base station in a non-full load state schedules a UE that accesses the base station, allocates resources for the UE, and allocates a scheduling timer to the UE.
  • the base station performs resource scheduling on the UE, and allocates a scheduling timer to the UE.
  • three states of the base station side maintenance UE are defined according to the timing of the scheduling timer.
  • the UE in this state is the initial access UE, and if it is scheduled, the dynamic resource allocation is used; at this time, since the UE is the initial access, no service request has occurred, so the base station has not allocated the UE scheduling timer.
  • the UE in this state uses dynamic resource allocation if scheduled; this state is the state that the UE is scheduled after the timer expires.
  • the UE in this state uses fixed resource allocation if scheduled; this state is from the time the UE is scheduled, until the scheduling timer expires.
  • Step 202 The scheduling timer is timed according to a preset resource retention period, where the length of the resource retention period is greater than ⁇ ;
  • the scheduling timer is used for the UE to migrate from the silent state to the reconfiguration state; when the different UEs are in the initial dynamic state after the initial state or the reconfiguration state, a resource retention period is randomly generated as the UE fixed resource.
  • the assigned quiet period interval that is, the start of the scheduling timer occurs after the previous timer arrives (or the first activation), and the UE gets a new scheduling opportunity; the termination of the scheduling timer occurs when the resource retention period is counted.
  • the resource retention period is uniformly distributed through the resource retention period interval ⁇ - +, where the units of ⁇ and ⁇ are both ms (milliseconds), which can be set according to resource hopping and SINR fluctuation in the actual scenario, if the SINR fluctuates greatly , can set a larger ⁇ and ⁇ If the SINR fluctuation is small, you can set a smaller ⁇ and
  • the purpose of randomly setting the resource retention period is to prevent different UEs from being in the same collision state (for example, multiple UEs are in a silent state at the same time), and the resources requested by other UEs are not guaranteed.
  • the principle of the UE switching between the silent state and the re-allocation state according to the resource retention period is as shown in FIG. 4 .
  • Step 203 After the scheduling timer expires, release the resource allocated by the base station to the UE.
  • the UE needs to be dynamically scheduled when there is a UE initial access or needs to re-allocate resources occupied by the UE.
  • the available resource list of the initial or reconfiguration state UE is the remaining system resources except the resources fixedly configured by the UE in the silent state, and the UE dynamically schedules the content within the available resource range according to the priority.
  • Priority (broadband priority and subband priority) are calculated according to conventional scheduling algorithms such as maximum carrier to interference ratio (Max C/I), polling (RR), fairness factor (PF), and so on.
  • all processes of its HARQ entity use the same resource location and number (ie, resources allocated for the UE during scheduling) in a quiet period interval;
  • the UE (including the state of initial, re-allocation, or silent UE) is scheduled according to the principle of retransmission priority.
  • the number of resources to be retransmitted is the same, in the UE.
  • all processes in all HARQ entities of the UE need to be cleared.
  • the embodiment of the present invention provides a resource scheduling method, and the process for completing resource scheduling by using the method is as shown in FIG. 5, and includes:
  • Step 501 The base station side receives a channel quality status report reported by all UEs.
  • Step 502 The base station side updates the scheduling timers of all UEs, and updates the UE status according to the scheduling timer. If there is a silent state UE, step 503 is performed; otherwise, step 504 is performed.
  • Step 503 The base station side schedules the UE in the silent state, and configures the resources of the UE according to the resource location and the number of the resource at the last scheduling time; the selection of the process and the determination of the MCS are the same as the regular dynamic scheduling.
  • Step 504 The base station side sets a list of available resources that are dynamically scheduled by the UE in the non-silent state. If the UE is not in the silent state, the available resource list is the full bandwidth. If yes, the available resource list is the remaining resources after the silent UE is scheduled.
  • Step 505 The base station side calculates the broadband priority and the sub-band priority of the UE according to the non-silent state UE channel quality status report according to the priority calculation principle of the conventional scheduling algorithm.
  • Step 506 The base station side dynamically schedules the non-silent UE according to the broadband priority and the sub-band priority, and checks whether there is a process in the UE HARQ entity that obtains the scheduling opportunity, and if so, clears the process in the HARQ.
  • Step 507 Select a process for the non-silent UE according to the conventional dynamic scheduling manner, and determine the MCS.
  • Step 701 The base station side receives a downlink channel quality status report reported by the UE, including a broadband CQI, a sub-band CQI, and the like.
  • Step 703 The base station side initializes the cell available resource list.
  • the iAvaiRBList is the cell full bandwidth, and the initial scheduling UE list and the cell allocated resource list eiiKS7JW are empty sets.
  • Step 704 The base station side divides all activated UEs into two sets according to the scheduling state PersScheFlag of the UE, one is a UE set in a silent state, and one is a UE set in an initial/re-allocation state, if the UE set in the silent state is not If it is empty, go to step 705; otherwise, go to step 707.
  • Step 705 The base station side performs the resource allocation record according to the latest scheduling, and is in a silent state.
  • the UEs in the lower UE set allocate resources and perform retransmission or new transmission scheduling on these UEs.
  • the HARQ process number and MCS determination are equivalent to the conventional scheduling scheme.
  • Step 706 The base station side updates the cell scheduled UE list iScheUeldList and the cell allocated resource list iUsedRBList for the UE in the already-scheduled silent state, and simultaneously updates the cell available resource list iAvaiRBList.
  • Step 707 The base station side dynamically schedules the UE in the UE set in the initial/reconfiguration state, and generates the broadband priority iWidePrioList and the subband priority of the UE according to the broadband CQI and the subband CQI reported by the UE, and other factors that need to be considered by the MAC. iRegPrioList.
  • Step 708 The base station side determines whether the cell available resource list lAvaiRBList is empty. If it is empty, step 718 is performed; otherwise, step 709 is performed.
  • Step 709 The base station side selects the highest priority UE scheduling according to the broadband priority and ifePnoTJW, and determines whether all UE scheduling is completed. If yes, go to step 718; otherwise, go to step 710.
  • Step 710 The base station side determines whether the number of resources allocated by the current cell has exceeded the upper limit of the cell load. If yes, execute 718; otherwise, execute 711.
  • Step 711 The base station side allocates resources for the currently scheduled UE in the current available resource list according to the subband priority egPnoTJW.
  • Step 712 If the current scheduled UE resource allocation is successful, go to step 713; otherwise, go to step 717.
  • Step 713 The base station side determines whether the currently scheduled UE HARQ buffer has a retransmission process. If yes, step 714 is performed; otherwise, step 715 is performed.
  • Step 714 The base station side clears all processes in the UE HARQ buffer.
  • Step 715 The base station side performs retransmission or new transmission scheduling on the current dynamic scheduling UE, and the HARQ process number assignment and the MCS determination are equivalent to the regular scheduling scheme.
  • the resource retention period is a random number in ⁇ - +, where ⁇ and 0 are both ms (milliseconds), and the recommended range of ⁇ is [10ms, 20ms, 40ms, 60ms, 80ms, 100ms], the value of 0 needs to be determined by the actual value of ⁇ , the recommended value range Surrounded by [10ms, 20ms, 30ms];
  • Step 717 The base station side updates the cell scheduled UE list iScheUeldList and the cell allocated resource list iUsedRBList for the UE in the already-scheduled silent state, and simultaneously updates the cell available resource list raz and sets the current scheduled UE sub-band priority. 0, execute A8;
  • Step 718 End the current scheduling of the base station side.
  • An embodiment of the present invention provides a resource scheduling apparatus, which has a structure as shown in FIG. 8, and includes: a resource allocation module 801, a scheduling timer 802, and a resource release module 803;
  • the resource allocation module 801 is configured to schedule, by a base station in a non-full load state, a UE that accesses the base station, allocate resources to the UE, and allocate the scheduling timer 802 to the UE; 802, configured to perform timing according to a preset resource retention period, where the length of the resource retention period is greater than ⁇ ;
  • the resource release module 803 is configured to release resources allocated by the base station to the UE after the scheduling timer expires.
  • An embodiment of the present invention further provides a resource scheduling system, including a base station and at least one UE accessing the base station;
  • the base station is configured to: when the user is in a non-full load state, schedule the UE that accesses the base station, allocate resources to the UE, and allocate a scheduling timer to the UE, where the scheduling timer is based on After the resource retention period is timed, the resources allocated by the base station to the UE are released, and the length of the resource retention period is greater than ⁇ .
  • the UE is configured to continuously occupy resources allocated by the base station during the timing of the scheduling timer according to the preset resource retention period.
  • the resource scheduling device may be integrated on a base station in the resource scheduling system to perform corresponding functions.
  • the various devices/function modules/functional units in the above embodiments may be implemented using a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • Each device/function module/functional unit in the above embodiments can be stored in a computer readable storage medium when implemented in the form of a software function module and sold or used as a standalone product.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • An embodiment of the present invention provides a resource scheduling apparatus and system, which can be combined with a resource scheduling method provided by an embodiment of the present invention, and a UE that is in a non-full load state schedules access to a UE of the base station,
  • the UE allocates resources, and allocates a scheduling timer to the UE, where the scheduling timer is timed according to a preset resource retention period, where the length of the resource retention period is greater than TTI, and after the scheduling timer expires Releasing the resources allocated by the base station to the UE, realizing the resource usage status in a resource retention period with a longer duration for a relative scheduling, stabilizing the synchronization interference of the neighboring cell, and solving the SINR under non-full load
  • the base station side only needs to make corresponding scheduling and resource allocation policy adjustments to reduce the resource occupancy hopping under non-full load and enhance the reliability of CQI prediction. Dynamically scheduled frequency selective gain, thereby improving system performance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明提供了一种资源调度方法、装置和系统。涉及长期演进系统(LTE)网络;解决了非满负荷下信号干扰噪声比(SINR)波动造成的系统性能下降的问题。该方法包括:处于非满负荷状态的基站调度接入该基站的UE,为所述UE分配资源,并为所述UE分配一调度计时器;所述调度计时器根据预置的资源保留周期进行计时,所述资源保留周期的长度大于传输时间间隔(TTI);在所述调度计时器到时后,释放所述基站为所述UE分配的资源。本发明提供的技术方案适用于LTE系统中,实现了在一个相对调度所用时长更为长的资源保留周期内资源使用状况不变。

Description

资源调度方法、 装置和系统
技术领域
本发明涉及一种 3G网络长期演进系统( LTE, Long Term Evolution ) , 尤其涉及一种非满负荷条件下的资源调度方法、 装置和系统。 背景技术
LTE 的动态调度使得系统能够根据用户设备 (UE ) 上行控制信道 ( PUCCH, Physical Uplink Control Channel )或者上行共享信道(PUSCH, Physical Uplink Shared Channel )反馈的信道状态指示 (CQI, Channel Quality Indicator ) , 在不同的调度时刻调度不同的 UE, 为 UE分配不同的物理资源 块(PRB, Physical Resources Block ) , 并选择相应的调制编码方式(MCS, Modulation and Coding Scheme )传输数据, 这样可以较好的利用信道信息, 合理的进行资源分配和调度, 从而更加准确、 有效的进行传输。 对于 LTE下 行系统( Downlink ) , 由于物理资源块上的干扰主要来自于邻小区基站, 可 能的干扰源位置确定, 如果系统处于满负荷状态, 带宽完全利用, 那么本小 区物理资源块上的干扰状况基本稳定, 在信道变化不快的情况下, 下行信道 状态的估计基本准确。
但是在非满负荷下, LTE系统的动态调度和资源分配, 容易导致干扰跳 变, 使得性能下降。 对于下行非满负荷场景, 由于邻小区资源没有完全使用, 资源分配的可变空间比较大, 如果釆用动态调度, 邻小区的调度 UE分配的 物理资源位置容易发生跳变, 使得在前后调度时刻, 本小区同一个物理资源 上接收到的邻小区同频干扰功率也容易发生跳变, 从而接收信号干扰噪声比 ( SINR, Signal to Interference Noise Ratio ) 波动较大, 如图 1所示。
SINR波动太大对系统性能有 4艮大的影响。 由于下行系统的 CQI测量、 上报到实际的下行调度存在一定的时延, SINR波动越大, CQI对于当前调度 时刻的下行信道质量估计越不准确, 导致选择的调制编码方式不合理, 使得 最终接收端解调失败率增加。 而在实际的通信网络中, 系统通常不是满负荷运行的, 满负荷运行对系 统造成很大的风险, 通常的系统是非满负荷, 如 50%负载、 70%负载等, 这 样当系统负荷升高时, 才会有一个预警緩冲的空间, 以降低系统故障的风险。 发明内容
本发明提供了一种资源调度方法、装置和系统, 解决了非满负荷下 SINR 波动造成的系统性能下降的问题。
一种资源调度方法, 包括:
处于非满负荷状态的基站调度接入该基站的 UE, 为所述 UE分配资源, 并为所述 UE分配一调度计时器;
所述调度计时器根据预置的资源保留周期进行计时, 所述资源保留周期 的长度大于传输时间间隔 (TTI ) ;
在所述调度计时器到时后, 释放所述基站为所述 UE分配的资源。
优选的, 上述资源调度方法还包括:
在所述调度计时器按照根据所述预置的资源保留周期进行计时期间, 所 述 UE持续占用所述基站为其分配的资源。
优选的, 上述资源调度方法还包括:
检测 SINR; 根据检测结果设置所述资源保留周期。
优选的, 所述根据检测结果设置所述资源保留周期为:
根据所述检测结果调整资源保留周期区间, 在 SINR值波动较大时提高 所述资源保留周期区间的上限和下限, 在 SINR值波动较小时降低所述资源 保留周期区间的上限和下限;
从所述资源保留周期区间周期内随机选择一值, 作为本次对 UE调度的 资源保留周期。
优选的, 所述处于非满负荷状态的基站为接入该基站的 UE分配资源进 行调度为: 为初始接入所述基站的 UE进行调度; 或,
对占用资源已释放的 UE进行动态调度。 优选的, 上述资源调度方法还包括:
在释放所述基站为所述 UE分配的资源时, 清空所述 UE所有 HARQ实 体中的进程。
本发明还提供了一种资源调度装置, 包括资源分配模块、 调度计时器和 资源释放模块;
所述资源分配模块设置为: 在处于非满负荷状态的基站调度接入该基站 的 UE, 为所述 UE分配资源, 并为所述 UE分配所述调度计时器;
所述调度计时器设置为: 根据预置的资源保留周期进行计时, 所述资源 保留周期的长度大于 ΤΉ;
所述资源释放模块设置为: 在所述调度计时器到时后, 释放所述基站为 所述 UE分配的资源。
优选的, 上述资源调度装置还包括: 资源保留周期管理模块, 设置为: 检测 SINR, 并根据检测结果设置所述资源保留周期
本发明还提供了一种资源调度系统, 包括基站和接入该基站的至少一个 UE;
所述基站设置为: 在处于非满负荷状态时, 调度接入该基站的所述 UE, 为所述 UE分配资源,并为所述 UE分配一调度计时器,在所述调度计时器根 据预置的资源保留周期进行计时到时后, 释放所述基站为所述 UE分配的资 源, 所述资源保留周期的长度大于 ΤΉ。
优选的, 所述 UE设置为: 在所述调度计时器按照根据所述预置的资源 保留周期进行计时期间, 持续占用所述基站为其分配的资源。
本发明提供了一种资源调度方法、 装置和系统, 由处于非满负荷状态的 基站调度接入该基站的 UE, 为所述 UE分配资源, 并为所述 UE分配一调度 计时器, 所述调度计时器根据预置的资源保留周期进行计时, 所述资源保留 周期的长度大于 ΤΤΙ, 并在所述调度计时器到时后, 释放所述基站为所述 UE 分配的资源, 实现了在一个相对调度所用时长更为长的资源保留周期内资源 使用状况不变, 稳定了邻小区的同步干扰, 解决了非满负荷下 SINR波动造 成的系统性能下降的问题。 附图概述
图 1为不同 UE接收 SINR随 TTI变化图;
图 2为本发明的实施例一提供的一种资源调度方法的流程图;
图 3为本发明的实施例一中 UE的状态转移关系图;
图 4为 UE在静默态和重配态之间切换的原理图 ;
图 5为本发明的实施例二提供的一种资源调度方法的流程图;
图 6为本发明的实施例中非满负荷状态下的多 UE调度原理图; 图 7为本发明的实施例三提供的一种资源调度方法的流程图;
图 8为本发明的实施例四提供的一种资源调度装置的结构示意图。
本发明的较佳实施方式
如何解决非满负荷下 SINR波动造成的系统性能下降成为一个现实问题, 当前主要的解决方案是通过静态频谱划分的方式, 限制不同小区的带宽使用 范围, 通过静态频谱划分的方式限制不同小区的带宽使用范围, 虽然可以在 一定程度上稳定邻小区的同频干扰, 降低 SINR波动, 但静态的限制频谱范 围, 使得一个小区不能完整的利用全带宽频谱资源, 不能根据信道的变化实 时的调度最合适的 UE、 分配最合适的资源, 降低了多 UE频选调度增益, 进 而降低了系统性能。
为了解决上述问题, 本发明的实施例提供了一种资源调度方法、 装置和 系统。 下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是, 在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互任意组合。
首先结合附图, 对本发明的实施例一进行说明。
本发明实施例提供了一种资源调度方法, 使用该方法进行非满负荷状态 下的资源调度的流程如图 2所示, 包括:
步骤 201、 处于非满负荷状态的基站调度接入该基站的 UE, 为所述 UE 分配资源, 并为所述 UE分配一调度计时器; 本步骤中, 在 UE发起业务请求资源时,基站对该 UE进行资源调度, 并 为该 UE分配一调度计时器。 为了方便描述, 根据调度计时器的计时情况, 定义了基站侧维护 UE的三种状态。
UE的三种状态定义:
1、 初始状态
处于该状态的 UE为初始接入 UE, 如果被调度则使用动态资源分配; 此 时, 由于 UE是初始接入, 并未有发生过业务请求, 故基站还未分配给 UE 调度计时器。
2、 重配状态
处于该状态的 UE, 如果被调度则使用动态资源分配; 此状态为 UE被调 度且调度计时器到时后所进入的状态。
3、 静默状态
处于该状态的 UE, 如果被调度则使用固定资源分配; 此状态自 UE被调 度时起, 至调度计时器到时为止。
UE的上述三种状态之间的转移关系如图 3所示。
步骤 202、 所述调度计时器根据预置的资源保留周期进行计时, 所述资 源保留周期的长度大于 ΤΉ;
本发明实施例中, 调度计时器用于 UE从静默状态迁移到重配状态; 不 同的 UE在初始状态或者重配状态后的第一次动态调度时, 随机生成一个资 源保留周期, 作为 UE 固定资源分配的静默周期间隔, 即调度计时器的启动 发生在前一次计时器到达(或者第一次激活)之后, 且 UE得到新的调度机 会时; 调度计时器的终止则发生在根据资源保留周期计时到时。 优选的, 资 源保留周期通过资源保留周期区间 ^— + 的均匀分布, 其中 ^和 ^的单位 均为 ms (毫秒) , 可根据实际场景中资源跳变与 SINR波动情况设置, 如果 SINR波动很大, 可设置较大的 ^和^ 如果 SINR波动很小, 可设置较小的 ^ 和
随机设置资源保留周期的目的在于避免不同的 UE—直处于相同的碰撞 状态(如多个 UE同时处于静默状态),造成其他 UE请求的资源得不到保证。 UE根据资源保留周期, 在静默态和重配态之间切换的原理如图 4所示。
步骤 203、在所述调度计时器到时后,释放所述基站为所述 UE分配的资 源;
在有 UE初始接入或者需要重配 UE占用的资源时,需要对 UE进行动态 调度。具体的,初始或者重配状态 UE的可用资源列表为静默状态下 UE固定 配置的资源之外剩余的系统资源, UE按照优先级在可用资源范围内动态竟争 调度。 优先级(宽带优先级和子带优先级) 的计算按照常规调度算法, 如最 大载干比 (Max C/I ) , 轮询 (RR ) , 公平因子 (PF )等。
对于调度计时器计时期间处于静默状态的 UE,则按照前一调度时刻的资 源位置和数目配置其资源。 在调度计时器到时后, 将释放为相应 UE配置的 资源, UE状态迁移为重配状态, 该 UE将重新参与动态调度资源竟争。
此外, 对于同一个被调度的 UE, 在一个静默周期间隔内, 其 HARQ实 体的所有进程均使用相同的资源位置和数目(即调度时为该 UE分配的资源); 对于每一个得到调度机会的 UE (包含状态为初始、 重配或者静默 UE ) , 均 按照重传优先的原则进行调度; 当调度 UE某一个进程跨越两个静默周期间 隔时, 为保证重传合并的资源数目相同, 在 UE重新启动新的静默周期间隔 时, 需将该 UE所有 HARQ 实体中所有进程清空。
下面结合附图, 对本发明的实施例二进行说明。
本发明实施例提供了一种资源调度方法, 使用该方法完成资源调度的流 程如图 5所示, 包括:
步骤 501、 基站侧接收所有 UE上报的信道质量状态报告。
步骤 502、 基站侧更新所有 UE的调度计时器, 且根据调度计时器更新 UE状态, 如果有静默状态 UE, 则执行步骤 503; 否则, 执行步骤 504。
步骤 503、 基站侧调度静默态 UE, 并按照上一调度时刻的资源位置和数 目配置该 UE的资源; 进程的选取和 MCS的确定同于常规动态调度。
步骤 504、基站侧设置非静默态 UE动态调度的可用资源列表,如果没有 静默态调度 UE, 则可用资源列表为全带宽; 如果有, 则可用资源列表为静默 UE调度之后剩余的资源; 步骤 505、基站侧根据非静默状态 UE信道质量状态报告,按照常规调度 算法优先级计算原则, 计算 UE的宽带优先级和子带优先级;
步骤 506、 基站侧根据宽带优先级和子带优先级动态调度非静默态 UE, 检查得到调度机会的 UE HARQ实体中是否还有进程,如果有,则清空 HARQ 中的进程;
步骤 507、按照常规动态调度的方式, 为非静默态 UE选取进程, 并确定 MCS。
非满负荷状态下的多 UE调度原理如图 6所示。
下面结合附图, 对本发明的实施例三进行说明。
本发明实施例提供了一种资源调度方法, 为使本发明的目的、 技术方案 和优点更加清楚, 以下结合附图对本发明的实施例加以详细说明。
具体流程如图 7所示, 包括:
步骤 701、 基站侧接收 UE上报的下行信道质量状态报告,包括宽带 CQI、 子带 CQI等。
步骤 702 、 基站侧更新 UE的调度计时器 ilntervalTimer (对于每个 UE 的调度计时器, 每经过一个 TTI该调度计时器的计数就减 1 ) , 以及调度状 态 PersScheFlag (在这里 PersScheFlag = -1表示 UE初始状态, PersScheFlag = 0表示 UE重配状态, PersScheFlag = 1表示 UE静默状态); 如果调度计时 器 iIntervalTimer=0 , 则 PersScheFlag置为 0; 同时基站侧需将调度状态由 PersScheFlag迁移为 PersScheFlag)的 UE所占用的物理资源释放。
步骤 703、 基站侧初始化小区可用资源列表 iAvaiRBList为小区全带宽, 初始化调度 UE列表 和小区已分配资源列表 eiiKS7JW为空集 合.
步骤 704 、 基站侧按照 UE的调度状态 PersScheFlag将所有激活 UE分 为两个集合, 一个为静默状态下的 UE集合, 一个为初始 /重配状态下的 UE 集合, 如果静默状态下的 UE集合不为空, 则转执行步骤 705; 否则, 执行步 骤 707。
步骤 705 、 基站侧按照最近一次调度使用的资源分配记录, 为静默状态 下的 UE集合中的 UE分配资源 ,并对这些 UE进行重传或者新传调度, HARQ 进程号、 MCS确定等同于常规调度方案。
步骤 706、 基站侧针对已经调度的静默状态下的 UE, 更新小区已调度 UE列表 iScheUeldList和小区已分配资源列表 iUsedRBList, 同时更新小区可 用资源列表 iAvaiRBList.
步骤 707、 基站侧对初始 /重配状态下的 UE集合中的 UE进行动态调度, 根据 UE上报的宽带 CQI和子带 CQI, 以及 MAC其他需要考虑的因素生成 UE的宽带优先级 iWidePrioList和子带优先级 iRegPrioList。
步骤 708、 基站侧判断小区可用资源列表 lAvaiRBList是否为空, 如果为 空, 则执行步骤 718; 否则, 执行步骤 709。
步骤 709、 基站侧按照宽带优先级, ifePnoTJW的顺序, 选择最高优先 级的 UE调度, 判断是否所有 UE调度完成, 如果是, 执行步骤 718; 否则执 行步骤 710。
步骤 710、 基站侧判断当前小区分配的资源数是否已经超过小区负荷上 限, 如果超过, 则执行 718; 否则执行 711。
步骤 711、 基站侧根据子带优先级 egPnoTJW, 在当前可用资源列表范 围内为当前调度 UE分配资源。
步骤 712、 如果当前调度 UE资源分配成功, 则执行步骤 713 ; 否则, 执 行步骤 717。
步骤 713、 基站侧判断当前调度 UE HARQ緩冲区 (buffer )是否还有 重传进程, 如果有, 则执行步骤 714; 否则, 执行步骤 715。
步骤 714、 基站侧将 UE HARQ buffer内所有进程清空。
步骤 715、基站侧对当前动态调度 UE进行重传或者新传调度, HARQ进 程号分配、 MCS确定等同于常规调度方案。
步骤 716、 基站侧将本次动态调度 UE的状态由 PersScheFlag=0迁移为
PersScheFlag=l , 并启动调度计时器, 资源保留周期为^- + 中的一个随 机数, 其中 ^和 0的单位均为 ms (毫秒), ^的建议取值范围为 [10ms, 20ms, 40ms , 60ms , 80ms , 100ms] , 0的取值需要 ^的实际取值来定, 建议取值范 围为 [10ms, 20ms, 30ms] ;
步骤 717、 基站侧针对已经调度的静默状态下的 UE, 更新小区已调度 UE列表 iScheUeldList和小区已分配资源列表 iUsedRBList, 同时更新小区可 用资源列表 raz皿 且将当前调度 UE的子带优先级全部置为 0 , 执行 A8;
步骤 718、 结束基站侧本次调度。
下面结合附图, 对本发明的实施例四进行说明。
本发明实施例提供了一种资源调度装置, 其结构如图 8所示, 包括: 资源分配模块 801、 调度计时器 802和资源释放模块 803 ;
所述资源分配模块 801 , 用于在处于非满负荷状态的基站调度接入该基 站的 UE, 为所述 UE分配资源, 并为所述 UE分配所述调度计时器 802; 所述调度计时器 802 , 用于根据预置的资源保留周期进行计时, 所述资 源保留周期的长度大于 ΤΉ;
所述资源释放模块 803 , 用于在所述调度计时器到时后, 释放所述基站 为所述 UE分配的资源。
本发明实施例还提供了一种资源调度系统, 包括基站和接入该基站的至 少一个 UE;
所述基站, 用于在处于非满负荷状态时, 调度接入该基站的所述 UE, 为 所述 UE分配资源,并为所述 UE分配一调度计时器,在所述调度计时器根据 预置的资源保留周期进行计时到时后, 释放所述基站为所述 UE分配的资源, 所述资源保留周期的长度大于 ΤΉ。
优选的, 所述 UE, 用于在所述调度计时器按照根据所述预置的资源保留 周期进行计时期间, 持续占用所述基站为其分配的资源。
上述资源调度装置可集成于上述资源调度系统内的基站上, 完成相应功 能。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计 算机程序流程来实现,所述计算机程序可以存储于一计算机可读存储介质中, 所述计算机程序在相应的硬件平台上(如系统、 设备、 装置、 器件等)执行, 在执行时, 包括方法实施例的步骤之一或其组合。 可选地, 上述实施例的全部或部分步骤也可以使用集成电路来实现, 这 些步骤可以被分别制作成一个个集成电路模块, 或者将它们中的多个模块或 步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬 件和软件结合。
上述实施例中的各装置 /功能模块 /功能单元可以釆用通用的计算装置来 实现, 它们可以集中在单个的计算装置上, 也可以分布在多个计算装置所组 成的网络上。
上述实施例中的各装置 /功能模块 /功能单元以软件功能模块的形式实现 并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。 上述提到的计算机可读取存储介质可以是只读存储器, 磁盘或光盘等。
任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想 到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范 围应以权利要求所述的保护范围为准。
工业实用性
本发明的实施例提供了一种资源调度装置和系统, 能够与本发明的实施 例所提供的资源调度方法相结合, 由处于非满负荷状态的基站调度接入该基 站的 UE, 为所述 UE分配资源, 并为所述 UE分配一调度计时器, 所述调度 计时器根据预置的资源保留周期进行计时, 所述资源保留周期的长度大于 TTI, 并在所述调度计时器到时后, 释放所述基站为所述 UE分配的资源, 实 现了在一个相对调度所用时长更为长的资源保留周期内资源使用状况不变, 稳定了邻小区的同步干扰, 解决了非满负荷下 SINR波动造成的系统性能下 降的问题。 无须修改现有协议, 也不需要增加信令开销, 基站侧只需做出相 应的调度和资源分配策略调整,以减少非满负荷下资源占用的跳变,增强 CQI 预测的可靠性, 同时兼顾了动态调度的频率选择性增益, 从而提升系统性能。

Claims

权 利 要 求 书
1、 一种资源调度方法, 包括:
处于非满负荷状态的基站调度接入该基站的用户设备(UE ) , 为所述 UE分配资源, 并为所述 UE分配一调度计时器;
所述调度计时器根据预置的资源保留周期进行计时, 所述资源保留周期 的长度大于传输时间间隔 (TTI ) ;
在所述调度计时器到时后, 释放所述基站为所述 UE分配的资源。
2、 根据权利要求 1所述的资源调度方法, 其中, 该方法还包括: 在所述调度计时器按照根据所述预置的资源保留周期进行计时期间, 所 述 UE持续占用所述基站分配的资源。
3、 根据权利要求 1所述的资源调度方法, 其中, 该方法还包括: 检测接收信号干扰噪声比 (SINR ) ;
根据检测结果设置所述资源保留周期。
4、 根据权利要求 3所述的资源调度方法, 其中, 所述根据检测结果设置 所述资源保留周期为:
根据所述检测结果调整资源保留周期区间, 在 SINR值波动较大时提高 所述资源保留周期区间的上限和下限, 在 SINR值波动较小时降低所述资源 保留周期区间的上限和下限;
从所述资源保留周期区间周期内随机选择一值, 作为本次对 UE调度的 资源保留周期。
5、 根据权利要求 1所述的资源调度方法, 其中, 所述处于非满负荷状态 的基站为接入该基站的 UE分配资源进行调度为:
为初始接入所述基站的 UE进行调度; 或,
对占用资源已释放的 UE进行动态调度。
6、 根据权利要求 1所述的资源调度方法, 其中, 该方法还包括: 在释放所述基站为所述 UE分配的资源时, 清空所述 UE所有 HARQ实 体中的进程。
7、一种资源调度装置, 包括资源分配模块、调度计时器和资源释放模块; 所述资源分配模块设置为: 在处于非满负荷状态的基站调度接入该基站 的用户设备(UE ) , 为所述 UE分配资源, 并为所述 UE分配所述调度计时 器;
所述调度计时器设置为: 根据预置的资源保留周期进行计时, 所述资源 保留周期的长度大于传输时间间隔 (TTI ) ;
所述资源释放模块设置为: 在所述调度计时器到时后, 释放所述基站为 所述 UE分配的资源。
8、 根据权利要求 7所述的资源调度装置, 其中, 该装置还包括: 资源保留周期管理模块, 设置为: 检测接收信号干扰噪声比 (SINR ) , 并根据检测结果设置所述资源保留周期。
9、 一种资源调度系统, 包括基站和接入该基站的至少一个用户设备 ( UE ) ;
所述基站设置为: 在处于非满负荷状态时, 调度接入该基站的所述 UE, 为所述 UE分配资源,并为所述 UE分配一调度计时器,在所述调度计时器根 据预置的资源保留周期进行计时到时后, 释放所述基站为所述 UE分配的资 源, 所述资源保留周期的长度大于传输时间间隔 (TTI ) 。
10、 根据权利要求 9所述的资源调度系统, 其中,
所述 UE设置为: 在所述调度计时器按照根据所述预置的资源保留周期 进行计时期间, 持续占用所述基站分配的资源。
PCT/CN2012/071384 2011-05-31 2012-02-21 资源调度方法、装置和系统 WO2012163109A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110143789.2A CN102811488B (zh) 2011-05-31 2011-05-31 资源调度方法、装置和系统
CN201110143789.2 2011-05-31

Publications (1)

Publication Number Publication Date
WO2012163109A1 true WO2012163109A1 (zh) 2012-12-06

Family

ID=47235034

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/071384 WO2012163109A1 (zh) 2011-05-31 2012-02-21 资源调度方法、装置和系统

Country Status (2)

Country Link
CN (1) CN102811488B (zh)
WO (1) WO2012163109A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111385900A (zh) * 2018-12-29 2020-07-07 华为技术有限公司 上行调度方法和装置
CN116136898A (zh) * 2023-04-19 2023-05-19 中国西安卫星测控中心 航天测控资源调度结果融合方法、装置和计算机设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106105360B (zh) * 2015-01-27 2019-05-07 华为技术有限公司 调制编码方式的选择方法及基站

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101350701A (zh) * 2007-07-19 2009-01-21 鼎桥通信技术有限公司 一种调度hsdpa资源的方法及系统
CN101820685A (zh) * 2010-04-15 2010-09-01 新邮通信设备有限公司 一种频率选择性调度方法和一种基站
US20110103336A1 (en) * 2008-04-22 2011-05-05 Ntt Docomo, Inc. Mobile communication method, mobile station, and radio base station
CN102056345A (zh) * 2009-11-05 2011-05-11 英飞凌科技股份有限公司 无线电基站及其控制方法、无线电通信装置及其控制方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101350701A (zh) * 2007-07-19 2009-01-21 鼎桥通信技术有限公司 一种调度hsdpa资源的方法及系统
US20110103336A1 (en) * 2008-04-22 2011-05-05 Ntt Docomo, Inc. Mobile communication method, mobile station, and radio base station
CN102056345A (zh) * 2009-11-05 2011-05-11 英飞凌科技股份有限公司 无线电基站及其控制方法、无线电通信装置及其控制方法
CN101820685A (zh) * 2010-04-15 2010-09-01 新邮通信设备有限公司 一种频率选择性调度方法和一种基站

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111385900A (zh) * 2018-12-29 2020-07-07 华为技术有限公司 上行调度方法和装置
CN111385900B (zh) * 2018-12-29 2021-11-19 华为技术有限公司 上行调度方法和装置
CN116136898A (zh) * 2023-04-19 2023-05-19 中国西安卫星测控中心 航天测控资源调度结果融合方法、装置和计算机设备

Also Published As

Publication number Publication date
CN102811488A (zh) 2012-12-05
CN102811488B (zh) 2016-11-02

Similar Documents

Publication Publication Date Title
US11317319B2 (en) Method and device for controlling congestion
US11032802B2 (en) Mobile terminal device and associated method for obtaining uplink resources
TWI619400B (zh) 用於對一無線通訊資源進行排程之方法及裝置
US20180352573A1 (en) Method and device for determining lbt mode, and method for implementing lbt mode switch
EP2936901B1 (en) Base station and associated method for assigning uplink resources to terminal devices with a similar traffic profile
US20100284364A1 (en) Semi-persistent scheduling method and apparatus based on statistically multiplexing in time and frequency resources
EP2734005B1 (en) Method of allocating resource, wireless communication system, base station, and program
CN108024287B (zh) 拥塞控制的方法及设备
JP6386046B2 (ja) 通信端末および方法
WO2012079517A1 (zh) 一种资源调度的方法、装置和基站
EP2858436B1 (en) Downlink data transmission scheduling method and device
JP2016527838A (ja) インフラ機器、無線通信ネットワークおよび方法
CN110583084B (zh) 无线电网络中的方法和装置
CN107889158B (zh) 传输控制和数据的方法及设备
US9668171B2 (en) Maximization of radio resource allocation for a carrier aggregated user equipment
US8478284B2 (en) Apparatus and method for scheduling packets
KR102400708B1 (ko) 전력 헤드룸을 보고하는 방법 및 상응하는 사용자 장치
EP3188538B1 (en) Method and device for adjusting inter-carrier load
WO2012163109A1 (zh) 资源调度方法、装置和系统
EP3016466A1 (en) Method to operate a radio access network and radio access network
US9504053B2 (en) Methods for scheduling communication resources to a wireless device and scheduling device
Patra et al. Packet scheduling for real-time communication over LTE systems
CN115835289A (zh) 拥塞控制的方法及设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12793697

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12793697

Country of ref document: EP

Kind code of ref document: A1