WO2013082931A1 - Procédé et appareil pour allouer des ressources de temps de transmission et système de communication mobile lte - Google Patents

Procédé et appareil pour allouer des ressources de temps de transmission et système de communication mobile lte Download PDF

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Publication number
WO2013082931A1
WO2013082931A1 PCT/CN2012/077263 CN2012077263W WO2013082931A1 WO 2013082931 A1 WO2013082931 A1 WO 2013082931A1 CN 2012077263 W CN2012077263 W CN 2012077263W WO 2013082931 A1 WO2013082931 A1 WO 2013082931A1
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Prior art keywords
resource
period
sending
mask
opportunity
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PCT/CN2012/077263
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English (en)
Chinese (zh)
Inventor
杨德
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中兴通讯股份有限公司
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Publication of WO2013082931A1 publication Critical patent/WO2013082931A1/fr

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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
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of mobile communications, and more particularly to a transmission opportunity resource allocation method and apparatus, and an LTE mobile communication system. Background technique
  • PUCCH Physical Uplink Control Channel
  • LTE Long Term Evolution
  • PUCCH Physical Uplink Control Channel
  • SR Scheduling Request
  • PUCCH format 2/2a/2b CQI/PMI (Channel Quality Indicator, Precoding Matrix Indicator) , channel quality indication, precoding matrix indication) or multiplexing of CQI/PMI and ACK/NACK.
  • CQI/PMI Channel Quality Indicator, Precoding Matrix Indicator
  • channel quality indication precoding matrix indication
  • the 36.331 protocol describes that the transmission timing and channel resource location for SR and CQI/PMI are allocated by RRM (Radio Resource Management) and configured by the air interface to the UE (User Equipment, User Set), where SR and CQI/PMI
  • the transmission timing is represented by 1 ⁇ and I CQ i/p MI , respectively.
  • the following description uses CQI/PMI as an example.
  • SR is similar to CQI/PMI.
  • RRM is managed as follows:
  • the number of intra-time domain transmission timings is calculated.
  • Figure 7 shows the typical configuration 1 of TDD (Time Division Duplex). See Figure 7 for the uplink and downlink time slot ratio parameter 1, and the CQI/PMI transmission period parameter Np: 80ms.
  • Np time Division Duplex
  • Calculate the number of time slots in the Np time domain: (Np/10) *4 32;
  • the correspondence between the CQI/PMI transmission timing and the I C Q I/pmi is initialized.
  • the available I CQ i/p MIs are searched from the N resource pools available in the time domain and allocated to the UE.
  • the above resource management method for CQI/PMI is simple and easy to manage. However, the method is obviously unreasonable: First, since the number of CQI/PMI time domain resources available to the cell is determined in advance, the number of UEs supported by the cell is limited to some extent, and if the CQI supported by the cell is to be changed The number of UEs allocated by the /PMI resource needs to modify the CQI/PMI transmission period configuration parameters of the background. Secondly, the method preprocesses the correspondence between the CQI/PMI transmission timing and the I CQI/PMI , which actually limits the intra-cell. The UE sends, the CQI/PMI cycle is fixed and unchangeable. In the laboratory test, or not very complicated wireless environment can meet the demand.
  • the complexity and uncertainty of the environment is Its main features. Therefore, the requirement of the radio channel quality of the UE is dynamic and dynamically changed according to the actual situation of the radio link. Therefore, the RRM dynamically manages the CQI/PMI resources to adapt to the radio link condition of the UE and improve the resource utilization efficiency.
  • the present invention provides a method and an apparatus for allocating a transmission opportunity resource, and an LTE mobile communication system, which is used to solve the problem of the lack of a dynamic allocation method for supporting PUCCH transmission timing resource allocation problems existing in the prior art.
  • a method for allocating a transmission opportunity resource is provided, and the following technical solutions are adopted:
  • the method for allocating the transmission timing resource includes: generating, by the network side, the transmission timing mask set of the uplink control information supporting the PUCCH according to the uplink and downlink slot allocation parameter in the UCI reporting periodic reporting protocol, and generating and the sending timing a set of transmission timing resources corresponding to the mask set;
  • the network side acquires a sending opportunity mask corresponding to the first reporting period in the sending opportunity mask set according to the first reporting period of the accessing UE;
  • the network side allocates a transmission opportunity resource corresponding to the transmission opportunity mask in the transmission timing resource set to the UE.
  • the resource allocation method further includes: the network side detecting the wireless link status of the UE, And obtaining a detection result; setting the initial reporting period of the UE to the first reporting period when the detection result meets the first preset condition.
  • the resource allocation method further includes: receiving, by the network side, an optimal period reported by the CMAC, and sending the set of the timing mask and the sending timing resource according to the value of the optimal period, and The first transmission timing resource is obtained; the network side compares the first transmission timing resource with the preset resource bitmap to obtain a first comparison result; when the first comparison result is that the first transmission timing resource is an idle resource, The optimal period is set to the first reporting period.
  • the preset resource bitmap is: a resource bitmap configured by the network side to identify the resource occupation according to the maximum reporting period.
  • the resource allocation method further includes: determining, by the network side, the trend direction of the reporting period adjustment according to the optimal period and the initial reporting period; and adjusting the trend direction according to the reporting period
  • the period closest to the optimal period is used as the suboptimal period; the network side sends the set of timing masks and the set of transmission timing resources according to the value index of the suboptimal period, and obtains the second transmission timing resource; and the second transmission timing resource and the preset
  • the resource bitmap is compared to obtain a second comparison result.
  • the sub-optimal period is set as the first reporting period.
  • a transmission opportunity resource allocation apparatus is provided, and the following technical solutions are adopted:
  • the sending opportunity resource allocation device includes: a generating module, configured to generate, according to the uplink and downlink time slot matching parameter, a sending timing mask set of the uplink control information supporting the PUCCH in each cycle, and generate a sending timing resource set corresponding to the sending timing mask set;
  • an obtaining module configured to obtain, according to the first reporting period of the access UE, a sending opportunity mask corresponding to the first period in the sending timing mask set;
  • an allocating module configured to allocate, to the UE, a sending opportunity resource corresponding to the sending opportunity mask in the sending timing resource set.
  • the sending timing resource allocation device further includes: a detecting module, configured to detect a radio link status of the UE, and obtain a detection result; and a first setting module, configured to: when the detection result satisfies the first preset condition, The initial reporting period is set to the first reporting period.
  • the transmission timing resource allocation apparatus further includes: a receiving module, configured to receive an optimal period reported by the CMAC; and an indexing module, configured to send the timing mask set and the sending timing resource set according to the value of the optimal period, and obtain the first a sending timing resource; a comparing module, configured to compare the first sending timing resource with a preset resource bitmap to obtain a first comparison result; and a second setting module, configured to: when the comparison result is the first sending timing resource is idle When the resource is used, the optimal period is set to the first reporting period.
  • the sending timing resource allocation device further includes: a configuration module, configured to allocate a resource bitmap according to a maximum uplink period to identify a resource occupation situation.
  • an LTE mobile communication system including the above-described transmission timing resource allocation apparatus is provided.
  • the dynamic management of the uplink control information transmission timing of the user PUCCH is realized, and the flexibility of resource management is improved; at the same time, the capability of the UE to adapt to the complex change of the wireless link condition is improved, due to the periodic dynamics Adjustment, the user can respond to the base station faster under the condition of poor radio link, and facilitate the base station to perform frequency selection scheduling on the user. The user can respond to the base station in a large period under the condition of good radio link, and the cell is guaranteed. User capacity.
  • the use of the suboptimal period as an auxiliary means of the optimal period ensures the quality of the user's service and the utilization of the resource as much as possible.
  • FIG. 2 is a schematic diagram of PUCCH CQI/PMI transmission timing initialization after a cell is successfully established according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of dynamic management of a PUCCH CQI/PMI resource according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of initializing a PUCCH SR transmission timing after a cell is successfully established according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a PUCCH SR resource dynamic management according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a main structure of a transmission timing resource allocation apparatus according to an embodiment of the present invention
  • FIG. 7 is a PUCCH CQI in a typical configuration in the prior art. Schematic diagram of /PMI resource correspondence. detailed description
  • the 32 resource elements of CQI_PMI_RES_SET6 are:
  • the network side allocates the timing resource corresponding to the index to the UE according to the first reporting period.
  • the first reporting period may be an initial reporting period, or may be a reporting period that the network side reconfigures for the UE according to the wireless link status.
  • the dynamic management of the PUCCH uplink control information transmission timing is realized, and the flexibility of resource management is improved.
  • the resource allocation method further includes:
  • the network side detects the radio link status of the UE, and obtains a detection result.
  • the detection result meets the first preset condition
  • the initial reporting period of the UE is set to the first reporting period.
  • the first preset condition here is that when the media access control (CMAC) layer detects the radio link status of the UE, if it is determined that the channel condition parameter of the UE changes normally, the initial reporting period allocated by the RRM for the access UE is A reporting cycle.
  • 2 is a schematic diagram of PUCCH CQI/PMI transmission timing initialization after a cell is successfully established according to an embodiment of the present invention.
  • the RRM initializes the PUCCH CQI/PMI transmission timing:
  • Step 201 The RRM initializes the CQI/PMI mask set and the resource set of the cell, that is, the sending timing mask set corresponds to the sending timing resource set, that is, after the RRM is successfully established, the RRM generates the CQI according to the uplink and downlink slot matching parameters respectively. /PMI Set of transmission timing masks for various cycles.
  • Step 202 The UE initiates an access procedure, and the RRM allocates an initial CQI/PMI transmission opportunity resource to the UE according to the initial timing according to the sending timing mask set and the sending timing resource set, and the process ends.
  • the background may configure the CQI/PMI transmission period parameter to be larger, so that the RRM is uniformly configured with the same period when the UE establishes the connection, and then the user
  • the change of the radio link condition when performing the service is dynamically adjusted by the CMAC and the RRM to perform the user CQI/PMI transmission timing.
  • the resource allocation method further includes: the network side receiving the optimal period reported by the CMAC; the network side transmitting the timing mask set and the sending opportunity resource set according to the value of the optimal period index, And obtaining the first sending opportunity resource; the network side compares the first sending opportunity resource with the preset resource bitmap to obtain a first comparison result; when the first comparison result is that the first sending timing resource is an idle resource, The optimal period is set to the first reporting period.
  • the second preset condition here is that when the CMAC detects the radio link status of the UE, if it is determined that the channel condition of the UE changes drastically or the change is very slow and nearly constant, it is determined that the CQI/PMI reporting period of the UE needs to be reconfigured.
  • the reporting period recommended by CMAC is the first reporting period.
  • FIG. 3 is a schematic diagram of dynamic management of PUCCH CQI/PMI resources according to an embodiment of the present invention. See picture 3 shows:
  • Step 301 The CMAC determines whether the UE channel condition timing arrives. If yes, go to step 302, otherwise, continue to wait for the judgment opportunity;
  • Step 302 The CMAC determines whether the CQI/PMI period needs to be modified. If necessary, go to step 303. Otherwise, the process ends.
  • Step 303 The CMAC reports the recommended optimal period for sending the CQI/PMI to the RRM.
  • Step 304 The RRM determines whether there is an idle resource according to the optimal period, the index mask set, and the sending timing resource set reported by the CMAC. If there is a step 306, the process proceeds to step 305.
  • Step 306 The RRM configures the searched CQI/PMI transmission timing to the UE.
  • the dynamic configuration of the UE CQI/PMI transmission timing is completed through CMAC and RRM cooperation.
  • the CMAC detects the radio link status of the UE. If it is determined that the channel condition of the UE changes drastically or the change is very slow and is almost constant, it is determined that the CQI/PMI reporting period of the UE needs to be reconfigured, and the recommended The period value, that is, the period reported by the CMAC, that is, the optimal period, is reported to the RRM; the RRM indexes the transmission timing mask set CQI_PMI_MASK_SET of the corresponding period according to the value of Np, and then traverses the mask elements in the set, and judges according to the following manner. :
  • CQI_PMI_MASK_SET[i] & CqiPmiBitMap[160] CQI_PMI_MASK_SET[i] where i is the index of the element in the mask set.
  • CQI_PMI_RES_SET[i] is the transmission timing that needs to be adjusted, and the adjusted transmission timing is configured to the UE;
  • the RRM adjusts the trend direction of the CMAC from the recommended trend period.
  • the RRM will determine the trend direction of the period adjustment according to the optimal period of the CMAC and the current period of the user. If the optimal period has no resources, it searches from the period closest to the optimal period. The timing of the transmission timing, the period that conforms to the trend adjustment trend direction, and the closest to the optimal period is called the suboptimal period.
  • the original UE CQI/PMI transmission period is 80 milliseconds
  • the CMAC is recommended to be adjusted to 5 milliseconds, and the 5 milliseconds corresponding resources are exhausted.
  • 10 milliseconds is the suboptimal period, and the i that satisfies the condition is searched from the suboptimal period. If found, the transmission timing is configured to the UE, and if the conditional i is not found, the resource of the suboptimal period is used. When it is done, the UE is not adjusted for the CQI/PMI transmission timing, and the flow ends.
  • the preset resource bitmap is: a resource bitmap configured by the network side to identify a resource occupation according to a maximum reporting period.
  • the resource bitmap is a CQI/PMI resource bitmap CqiPmiBitMap[160] that the RRM needs to maintain according to the maximum period of 160 milliseconds, indicating that there are 160 bits, which are used to identify the occupancy of the resource.
  • the foregoing is a transmission timing resource allocation embodiment of the CQI/PMI, and the present invention also specifically specifies a specific implementation of the SR transmission timing resource allocation.
  • FIG. 4 is a schematic diagram of PUCCH SR transmission timing initialization after a cell is successfully established according to an embodiment of the present invention.
  • Step 401 The RRM initializes the cell SR mask set and the transmission timing resource set, that is, the good mask set and the transmission timing resource set correspond, that is, the RRM is
  • the transmission timing mask sets of the SR periods are respectively generated according to the uplink and downlink slot ratio parameters:
  • SR_MASK_SET5 corresponds to 5, 10, 20, 40, and 80 milliseconds, respectively.
  • SR_MASK_SET3 has 8 mask elements respectively.
  • the prefix b represents binary
  • the first three ellipses of the first element indicate that 18 zeros are omitted
  • the last one ellipsis indicates that 16 zeros are omitted
  • the next seven elements are logically shifted right by the first element. Obtained, in the same way, a set of masks corresponding to other periods can be obtained.
  • SR_RES_SET1, SR_RES_SET2...SR_RES_SET5 corresponding to the transmission timing, corresponding to 5, 10, 20, 40, and 80 milliseconds, respectively.
  • the eight resource elements of SR_RES_SET3 are 17, 18, 22, 23, 27, 28, 32, and 33, respectively, corresponding to the elements in the mask set.
  • Step 402 The UE initiates an access procedure, and the RRM allocates an initial SR sending opportunity resource to the UE according to the initial period, and the process ends.
  • FIG. 5 is a schematic diagram of dynamic management of PUCCH SR resources according to an embodiment of the present invention. See Figure 5:
  • Step 501 The CMAC determines whether the UE channel condition timing arrives. If yes, go to step 502. Otherwise, continue to wait for the judgment opportunity;
  • Step 502 The CMAC determines whether the SR period needs to be modified. If necessary, go to step 503, otherwise the process ends.
  • Step 503 The CMAC reports the optimal period for sending the SR to the RRM.
  • Step 504 The RRM is based on the optimal period reported by the CMAC, the index mask set and the transmission timing resource set, and determines whether there is an idle resource, if yes, go to step 506, otherwise go to step 505;
  • Step 505 The RRM indexes the sub-optimal period according to the optimal period and the current period, and according to the sub-optimal period index mask set and the sending timing resource set, and determines whether there is an idle resource. If there is a step 506, the process ends.
  • Step 506 The RRM configures the searched transmission timing to the UE.
  • the dynamic configuration of the UE SR transmission timing is completed through CMAC and RRM cooperation.
  • FIG. 6 is a schematic diagram of main structures of a transmission timing resource allocation apparatus according to an embodiment of the present invention.
  • the sending opportunity resource allocation device includes:
  • the generating module 62 is configured to generate, according to the uplink and downlink slot allocation parameter, a transmission timing mask set of the uplink control information supporting the PUCCH in each period, and a sending timing resource set corresponding to the sending timing mask set;
  • the obtaining module 64 is configured to obtain, in the sending timing mask set, a sending opportunity mask corresponding to the first period according to the first reporting period of the access UE;
  • the allocating module 66 is configured to allocate, to the UE, a transmission opportunity resource corresponding to the transmission timing mask in the transmission timing resource set.
  • the transmission timing resource allocation apparatus further includes: a detection module, the detection module is not shown in FIG. 6, and is configured to detect a radio link status of the UE, and obtain a detection result;
  • the first setting module is configured to set an initial reporting period of the UE to a first reporting period when the detection result meets the first preset condition, where the first setting module is not shown in FIG. 6.
  • the sending timing resource allocation device further includes: a receiving module, an indexing module, a comparison module, and a second setting module, which are not shown in FIG. 6;
  • a receiving module configured to receive an optimal period reported by the CMAC
  • An indexing module configured to send a set of timing masks and a set of sending timing resources according to a value index of the optimal period, and obtain a first sending opportunity resource
  • a comparison module configured to compare the first transmission timing resource with a preset resource bitmap, to obtain First comparison result
  • the second setting module is configured to set the optimal period to the first reporting period when the comparison result is that the first sending timing resource is an idle resource.
  • the sending opportunity resource allocating device further comprises: a configuration module, configured to identify a resource bitmap of the resource occupation according to the maximum uplink configuration. This module is not shown in Figure 6.
  • the present invention also provides an LTE mobile communication system including the above-described transmission opportunity resource allocation means.
  • the dynamic management of the uplink control information transmission timing of the user PUCCH is realized, and the flexibility of resource management is improved; at the same time, the capability of the UE to adapt to the complex change of the wireless link condition is improved, due to the periodic dynamics Adjustment, the user can respond to the base station faster under the condition of poor radio link, so that the base station can perform frequency selection scheduling for the user, and the user can respond to the base station with a large period under the condition of good radio link, and the cell is guaranteed.
  • User capacity In particular, the suboptimal cycle is used as an auxiliary means of the optimal cycle to ensure the user's service quality and the utilization of resources as much as possible.

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

Abstract

La présente invention se rapporte à un procédé et à un appareil adaptés pour allouer des ressources de temps de transmission. L'invention se rapporte d'autre part à un système de communication mobile LTE. Le procédé adapté pour allouer des ressources de temps de transmission, selon l'invention, comprend les étapes suivantes : un côté réseau génère, sur la base d'un paramètre de vitesse de distribution de tranches de temps sur la liaison montante/sur la liaison descendante, un ensemble de masques de temps de transmission de données de contrôle sur la liaison montante (UCI) qui prennent en charge un PUCCH, dans toutes les périodes de reporting définies dans un protocole de période de reporting d'UCI ; il génère un ensemble de ressources de temps de transmission correspondant à l'ensemble de masques de temps de transmission ; ensuite, sur la base d'une période de reporting déterminée via un CMAC en fonction d'une condition d'un canal radio après un accès par un UE, le côté réseau obtient un ensemble de masques de temps de transmission correspondant à la période ; et le côté réseau alloue à l'UE une ressource de temps de transmission correspondant à l'ensemble de masques de temps de transmission, la ressource appartenant à l'ensemble de ressources de temps de transmission. La présente invention permet : de mettre en œuvre une gestion dynamique de temps de transmission d'UCI de PUCCH de l'utilisateur ; et, partant, de simplifier une gestion de ressources.
PCT/CN2012/077263 2011-12-08 2012-06-20 Procédé et appareil pour allouer des ressources de temps de transmission et système de communication mobile lte WO2013082931A1 (fr)

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CN201110405540.4A CN103166749B (zh) 2011-12-08 2011-12-08 发送时机资源分配方法与装置、lte 移动通信系统
CN201110405540.4 2011-12-08

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CN111787616B (zh) * 2019-04-04 2023-03-28 华为技术有限公司 一种上行信息传输方法及装置

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