WO2011020269A1 - Random access method and apparatus for a long term evolution system - Google Patents
Random access method and apparatus for a long term evolution system Download PDFInfo
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- WO2011020269A1 WO2011020269A1 PCT/CN2009/075583 CN2009075583W WO2011020269A1 WO 2011020269 A1 WO2011020269 A1 WO 2011020269A1 CN 2009075583 W CN2009075583 W CN 2009075583W WO 2011020269 A1 WO2011020269 A1 WO 2011020269A1
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- random access
- aggregated carrier
- uplink
- downlink
- carrier group
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000007774 longterm Effects 0.000 title claims abstract description 11
- 239000000969 carrier Substances 0.000 claims abstract description 28
- 230000002776 aggregation Effects 0.000 claims abstract description 21
- 238000004220 aggregation Methods 0.000 claims abstract description 21
- 230000004044 response Effects 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 21
- 238000001514 detection method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004931 aggregating effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
Definitions
- the present invention relates to the field of communications, and in particular to a random access method and apparatus for a long term evolution system. Background technique
- Carrier aggregation is a key technology for supporting larger bandwidth in future wireless communication systems. It aggregates different carriers to form a carrier with a larger bandwidth, and supports a user terminal with a stronger capability on the aggregated bandwidth (User Terminal, UT ), for example, a bandwidth exceeding 100 MHz in LTE-Advanced.
- the carrier of the uplink and the downlink is asymmetric when the carrier is aggregated, and in the case of the asymmetric carrier, all the components must be required.
- Backward compatibility can support user access of all bandwidth capabilities. Therefore, the resource scheduling of the base station (BS) has a large limitation.
- BS base station
- the path carrier allocates more resources, which easily leads to loss of virtual alarm and false detection performance, and the resource request on the uplink component carrier brings an increase in overhead. Summary of the invention
- the present invention aims to provide a random access method for a long-term evolution system, which can solve the problem that a user terminal that requires all component carriers to be backward compatible to support all bandwidth capabilities in the case of an asymmetric carrier, resource scheduling of the base station There is a large limitation. In order to distinguish the downlink carrier corresponding to the uplink carrier, more resources must be allocated for the uplink carrier, resulting in loss of false alarm and false detection performance, and on the uplink component carrier. Resource requests bring an increase in overhead.
- a random access method for a long term evolution system including the following steps: a base station according to a bandwidth capability of all user terminals that need to be supported, and an aggregate carrier for an uplink Performing grouping to obtain an uplink aggregated carrier group; the base station sets a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, and the downlink aggregated carrier group and the uplink aggregated carrier group form an aggregated carrier pair; The physical random access channel parameters of the aggregated carrier pair are then performed, and then access is performed according to the determined physical random access channel parameters.
- the determining, by the base station, the random access channel parameter of the aggregated carrier pair comprises: receiving, by the base station, a random access request message from the first user terminal; and determining, by the base station, the bandwidth capability of the first user terminal
- the uplink aggregation aggregation carrier group corresponds to the first downlink aggregation carrier group; the base station transmits a random access response message on the first downlink aggregation carrier group, and the random access response message includes a physical random access channel parameter.
- the physical random access channel parameters include time, frequency, and code resources.
- each uplink aggregated carrier group corresponds to a user terminal having similar bandwidth capability.
- the base station enters the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network.
- Line semi-static configuration the base station enters the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network.
- the downlink aggregated carrier group includes a downlink aggregated carrier.
- the downlink aggregated carrier group includes a plurality of downlink aggregated carriers.
- a random access apparatus for a long term evolution system including: a packet module, configured, by a base station, according to a bandwidth capability of all user terminals supported by the base station, The aggregated carrier of the path is grouped to obtain an uplink aggregated carrier group, and the setting module is configured to set, by the base station, a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, and the downlink aggregated carrier group and the uplink aggregation
- the carrier group forms an aggregated carrier pair;
- the parameter module is configured to determine, by the base station, a physical random access channel parameter of the aggregated carrier pair; and the access module is configured to perform access according to the physical random access channel parameter determined by the parameter module.
- the parameter module specifically includes: a receiving unit, configured to receive, by the base station, a random access request message from the first user terminal; and a corresponding unit, configured to determine, by the base station, the bandwidth capability of the first user terminal a first downlink aggregated carrier group corresponding to the corresponding uplink aggregated carrier group; a response unit, configured to send, by the base station, a random access response message, a random access response message, on the first downlink aggregated carrier group Includes physical random access channel parameters.
- the foregoing random access device further includes: a configuration module, configured to perform semi-static configuration on the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network.
- a configuration module configured to perform semi-static configuration on the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network.
- the present invention is directed to a random access method and apparatus for a long term evolution system.
- the uplink aggregated carriers are grouped, and then the downlink corresponding to the uplink aggregated carrier group is set.
- the method comprises: aggregating a carrier group, and finally determining a physical random access channel parameter of the aggregated carrier pair formed by the uplink aggregated carrier group and the downlink aggregated carrier group, so that the base station only needs to use the random access to the user terminal User terminal pair
- the specific downlink aggregation carrier group should not occupy other downlink carrier resources, which reduces the occupation of channel resources in the physical random access process, helps suppress false alarms and improves detection performance, thereby improving the carrier.
- FIG. 1 is a flow chart showing a random access method according to a first embodiment of the present invention
- FIG. 2 is a flow chart showing a random access method according to a second embodiment of the present invention
- FIG. 1 is a flow chart showing a random access method according to a first embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:
- Step S102 The BS groups the uplink aggregate carriers according to the bandwidth capabilities of all the UTs that need to be supported, to obtain an uplink aggregated carrier group.
- Step S104 The BS sets a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, and the downlink aggregated carrier group and the uplink aggregated carrier group form an aggregated carrier pair.
- Step S106 The BS determines a physical random access channel parameter of the aggregated carrier pair.
- Step S108 The BS performs access according to the determined physical random access channel parameter.
- the uplink aggregated carriers are first grouped according to the bandwidth capabilities of all UTs that need to be supported, and then the downlink aggregated carriers corresponding to the uplink aggregated carrier groups are set. And determining, by the group, the physical random access channel parameters of the aggregated carrier pair formed by the uplink aggregated carrier group and the downlink aggregated carrier group, where the BS needs to determine the bandwidth capability of all the UTs that need to be supported in the wireless communication network, Understand the bandwidth capabilities of the UTs currently supported in the wireless communication system to determine the aggregated carrier conditions that need to be supported during the random access procedure.
- the BS only needs to utilize a specific downlink aggregated carrier group corresponding to the UT when performing random access to the UT, without occupying other downlink carrier resources, and reducing channel resources in the physical random access process.
- the occupation can help suppress false alarms and improve detection performance, thereby improving the utilization of carrier resources and the efficiency of random access. Therefore, in the case of asymmetric carriers, all component carriers are required to be backward compatible to support all.
- the resource scheduling of the BS has a large limitation. In order to distinguish the downlink carrier corresponding to the uplink carrier, more resources must be allocated for the uplink carrier, resulting in false alarm and false detection performance. The loss, and the resource request on the uplink component carrier brings about an increase in overhead.
- step S106 specifically includes: the BS receives a random access request message from the UT; and the BS determines a downlink aggregated carrier corresponding to the uplink aggregated carrier group that matches the UT bandwidth capability.
- the BS transmits a random access response message on the downlink aggregated carrier group, and the random access response message includes a physical random access channel parameter.
- the BS in this embodiment determines the bandwidth capability of the UT in the wireless communication network.
- the BS sets one or more downlink component carrier groups, and each downlink component carrier group and one or several The UT bandwidth capability uplink carriers are matched, and each downlink (DL) group is configured to set a random access response message.
- the BS receives the UT random access request, the BS only Transmitting a random access response message on a downlink component carrier group matched with an uplink carrier that matches the current UT bandwidth capability, and broadcasting different physical random access channel parameters when the preamble message transmitted by the BS is unchanged Learn more about the bandwidth capabilities of the UT.
- the BS For the physical random access channel, the BS only detects the downlink carrier that the UT can listen to, and at the same time, only sends a random access response message on the corresponding downlink carrier, which The problem of excessive occupation of channel resources in the process of physical random access is solved.
- the physical random access channel parameters include time, frequency and code resources, thereby obtaining more bandwidth capability information of the UT.
- each uplink aggregated carrier group corresponds to a UT having similar bandwidth capability.
- the same uplink resources are used, and the new resources formed after the aggregation are completely backward compatible.
- the BS performs semi-static configuration on the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network.
- Corresponding relationship between the uplink aggregation carrier group and the downlink aggregation carrier group, including how the uplink carrier resources correspond to different downlink carriers, the correspondence may be fixed, or may be performed by the BS.
- this embodiment is a case where the BS performs semi-static configuration, that is, the BS increases or decreases the downlink component carrier group corresponding to the uplink carrier according to the change of the wireless communication network environment and the load condition, so that the physical random connection
- the inbound channel resources can be completely controlled within a reasonable range, thereby effectively reducing the complexity of the BS scheduling and the resource overhead occupied by the parameters that the physical random access channel needs to bear.
- the downlink aggregated carrier group includes a downlink aggregated carrier.
- the carrier resources of a corresponding component carrier group of the asymmetric uplink and the downlink can be respectively accommodated, thereby ensuring the backward compatibility performance of the wireless communication network.
- the downlink aggregated carrier group includes a plurality of downlink aggregated carriers.
- the present embodiment can accommodate different capabilities of UT random access by setting carrier resources of a plurality of corresponding component carriers of the asymmetric uplink and downlink, respectively, and ensuring backward compatibility performance of the wireless communication network.
- the BS performs access according to an existing access mode.
- 2 is a flow chart showing a random access method according to a second embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:
- Step S202 the BS determines the bandwidth capability of all the UTs that need to be supported in the wireless communication network.
- Step S204 The BS groups the uplink aggregated carriers according to the bandwidth capability of the UT.
- Step S206 The BS sets the downlink aggregated carrier or carrier group. Corresponding to the uplink aggregated carrier group;
- Step S208 The BS determines physical random access channel parameters of the uplink and downlink aggregated carrier pairs.
- Step S210 The BS performs access according to the determined physical random access channel parameter.
- FIG. 3 is a structural diagram of a random access device according to a third embodiment of the present invention. As shown in FIG. 3, the device includes:
- the grouping module 302 is configured to: the BS aggregates the aggregated carriers of the uplink according to the bandwidth capability of all the UTs that need to be supported, to obtain an uplink aggregated carrier group;
- the setting module 304 is configured to set, by the BS, a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, where the downlink aggregated carrier group and the uplink aggregated carrier group form an aggregated carrier pair; and the parameter module 306 is used for the BS.
- the physical random access channel parameter of the aggregated carrier pair is determined; the access module 308 is configured to perform access by the BS according to the physical random access channel parameter determined by the parameter module.
- the packet module 302 firstly groups the uplink aggregated carriers according to the bandwidth capabilities of all the UTs that need to be supported, and then uses the setting module 304 to set the downlink aggregated carrier corresponding to the uplink aggregated carrier group.
- the group, the last parameter module 306 determines the physical random access channel parameters of the aggregated carrier pair formed by the uplink aggregated carrier group and the downlink aggregated carrier group, so that the BS only needs to perform random access to the UT.
- the specific downlink aggregated carrier group corresponding to the UT is used without occupying other downlink carrier resources, which reduces the occupation of channel resources in the physical random access process, and helps to suppress false alarms and improve detection. Performance, thereby improving the utilization of carrier resources and the efficiency of random access.
- the parameter module 306 specifically includes: a receiving unit, configured to receive, by the BS, a random access request message from the first UT; and a corresponding unit, configured to determine, by the BS, the bandwidth capability of the first UT a first downlink aggregated carrier group corresponding to the uplink aggregated carrier group; a response unit, configured to transmit, by the BS, a random access response message on the first downlink aggregated carrier group, where the random access response message includes Physical random access channel parameters.
- the BS in this embodiment determines the bandwidth capability of the UT in the wireless communication network.
- the BS sets one or more downlink component carrier groups, and each downlink component carrier group and one or several The UT bandwidth capability uplink carriers are matched, and each DL component carrier group is provided with a random access response message.
- the BS receives the UT random access request, the BS only matches the current UT bandwidth capability.
- the downlink carrier-matched downlink component transmits a random access response message on the carrier group, and broadcasts different physical random access channel parameters to obtain more UT bandwidth capability if the preamble message transmitted by the BS is unchanged. information.
- the BS only detects the downlink carrier that the UT can listen to, and only sends the random access response message on the corresponding downlink carrier, thus solving the channel resource occupation in the physical random access process. Too big a problem.
- the foregoing random access device further includes: a configuration module, configured to perform semi-static configuration on the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network. Correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group, including how the uplink carrier resources are opposite to different downlink carriers
- the correspondence may be fixed or semi-statically configured by the BS. This embodiment is a case where the BS performs semi-static configuration, that is, the BS increases or decreases according to changes in the wireless communication network environment and load conditions.
- the downlink corresponding to the uplink carrier constitutes a carrier group, so that the physical random access channel resources can be completely controlled within a reasonable range, thereby effectively reducing the complexity of the BS scheduling and the physical random access channel needs to be carried.
- the foregoing embodiment of the present invention reduces the occupation of channel resources in the physical random access process, helps suppress false alarms, and improves detection performance, thereby improving utilization of carrier resources and The efficiency of random access.
- modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
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Abstract
A random access method and apparatus for a Long Term Evolution system are provided in the invention. The method includes: according to the bandwidth capacities of all user terminals requiring support, grouping the aggregation carriers of uplinks to obtain uplink aggregation carrier groups; setting downlink aggregation carrier groups corresponding to the uplink aggregation carrier groups, wherein the downlink aggregation carrier groups and the uplink aggregation carrier groups form aggregation carrier pairs; determining the physical random access channel parameters of the aggregation carrier pairs and executing access. The present invention reduces the occupation on the channel resources during the physical random access, and it is conductive to suppress the false alert and improve the detection performance, and thereby improves the utilization ratio of the carrier resources and the efficiency of the random access, solves the problem of allocating necessarily more resources for the uplink carriers, therefore causing the loss of the false alert and the error detection performance, and adding the overhead brought by the resource request on the uplink component carriers.
Description
用于长期演进***的随机接入方法及装置 技术领域 Random access method and device for long term evolution system
本发明涉及通信领域， 具体而言， 涉及一种用于长期演进***的随机 接入方法及装置。 背景技术 The present invention relates to the field of communications, and in particular to a random access method and apparatus for a long term evolution system. Background technique
在下一代的宽带无线通信网络中， 解决无线通信网络中如何在当前的 无线通信***中的带宽下支持更大的带宽成为提高小区间用户终端吞吐量 及用户终端平均吞吐量的一个关键因素， 并面临严峻的挑战。 In the next generation of broadband wireless communication networks, solving how wireless networks support larger bandwidths in the bandwidth of current wireless communication systems is a key factor in improving the throughput of inter-cell user terminals and the average throughput of user terminals. And facing severe challenges.
目前， 在第三代合作伙伴计划的长期演进（ Long Term Evolution, LTE ) 技术中提出釆用载波聚合的方式来有效地在当前的无线通信***中支持更 大的带宽， 以满足新一代无线标准中对吞吐量、 峰值速率等指标的需求。 载波聚合是未来无线通信***中支持更大带宽的关键技术， 其通过对不同 的载波进行聚合， 形成更大带宽的载波， 在聚合后的带宽上支持具有更强 能力的用户终端（ User Terminal, UT ),例如， LTE- Advanced中超过 100MHz 的带宽。 At present, in the Long Term Evolution (LTE) technology of the 3rd Generation Partnership Project, a carrier aggregation method is proposed to effectively support larger bandwidth in current wireless communication systems to meet the next generation wireless standard. The need for indicators such as throughput and peak rate. Carrier aggregation is a key technology for supporting larger bandwidth in future wireless communication systems. It aggregates different carriers to form a carrier with a larger bandwidth, and supports a user terminal with a stronger capability on the aggregated bandwidth (User Terminal, UT ), for example, a bandwidth exceeding 100 MHz in LTE-Advanced.
但是， 由于无线通信***中上行链路和下行链路之间的业务非对称， 从而导致载波聚合时上行链路和下行链路的载波非对称， 在非对称载波情 况下， 要求所有组成载波必须后向兼容才能支持所有带宽能力的用户终端 接入， 所以， 基站（Base Station, BS ) 的资源调度存在较大的限制， 为了 区分上行链路载波所对应的下行链路载波， 必须为上行链路载波分配更多 资源， 从而容易导致虚警报和误检测性能的损失， 并且， 在上行链路组成 载波上的资源请求会带来开销的增加。
发明内容 However, due to the asymmetric service between the uplink and the downlink in the wireless communication system, the carrier of the uplink and the downlink is asymmetric when the carrier is aggregated, and in the case of the asymmetric carrier, all the components must be required. Backward compatibility can support user access of all bandwidth capabilities. Therefore, the resource scheduling of the base station (BS) has a large limitation. In order to distinguish the downlink carrier corresponding to the uplink carrier, it must be uplink. The path carrier allocates more resources, which easily leads to loss of virtual alarm and false detection performance, and the resource request on the uplink component carrier brings an increase in overhead. Summary of the invention
本发明旨在提供一种用于长期演进***的随机接入方法， 能够解决在 非对称载波情况下， 要求所有组成载波必须后向兼容才能支持所有带宽能 力的用户终端接入， 基站的资源调度存在较大的限制， 为了区分上行链路 载波所对应的下行链路载波， 必须为上行链路载波分配更多资源， 从而导 致虚警报和误检测性能的损失， 并且在上行链路组成载波上资源请求带来 开销的增加的问题。 The present invention aims to provide a random access method for a long-term evolution system, which can solve the problem that a user terminal that requires all component carriers to be backward compatible to support all bandwidth capabilities in the case of an asymmetric carrier, resource scheduling of the base station There is a large limitation. In order to distinguish the downlink carrier corresponding to the uplink carrier, more resources must be allocated for the uplink carrier, resulting in loss of false alarm and false detection performance, and on the uplink component carrier. Resource requests bring an increase in overhead.
为了实现上述目的， 根据本发明的一个方面， 提供了一种用于长期演 进***的随机接入方法， 包括以下步骤： 基站根据需要支持的所有用户终 端的带宽能力， 对上行链路的聚合载波进行分组， 得到上行链路聚合载波 组； 基站设置与上行链路聚合载波组相对应的下行链路聚合载波组， 下行 链路聚合载波组与上行链路聚合载波组形成聚合载波对； 基站确定聚合载 波对的物理随机接入信道参数， 之后根据所确定的物理随机接入信道参数 执行接入。 In order to achieve the above object, according to an aspect of the present invention, a random access method for a long term evolution system is provided, including the following steps: a base station according to a bandwidth capability of all user terminals that need to be supported, and an aggregate carrier for an uplink Performing grouping to obtain an uplink aggregated carrier group; the base station sets a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, and the downlink aggregated carrier group and the uplink aggregated carrier group form an aggregated carrier pair; The physical random access channel parameters of the aggregated carrier pair are then performed, and then access is performed according to the determined physical random access channel parameters.
优选地， 在上述的随机接入方法中， 基站确定聚合载波对的随机接入 信道参数具体包括： 基站接收来自笫一用户终端的随机接入请求消息； 基 站确定与第一用户终端带宽能力相符的上行链路聚合载波组相对应的第一 下行链路聚合载波组； 基站在第一下行链路聚合载波组上发射随机接入响 应消息， 随机接入响应消息包括物理随机接入信道参数。 Preferably, in the foregoing random access method, the determining, by the base station, the random access channel parameter of the aggregated carrier pair comprises: receiving, by the base station, a random access request message from the first user terminal; and determining, by the base station, the bandwidth capability of the first user terminal The uplink aggregation aggregation carrier group corresponds to the first downlink aggregation carrier group; the base station transmits a random access response message on the first downlink aggregation carrier group, and the random access response message includes a physical random access channel parameter.
优选地， 在上述的随机接入方法中， 物理随机接入信道参数包括时间、 频率与码资源。 Preferably, in the random access method described above, the physical random access channel parameters include time, frequency, and code resources.
优选地， 在上述的随机接入方法中， 每个上行链路聚合载波组对应于 具有类似带宽能力的用户终端。 Preferably, in the above random access method, each uplink aggregated carrier group corresponds to a user terminal having similar bandwidth capability.
优选地， 在上述的随机接入方法中， 基站根据无线通信网络的当前环 境与负载情况对上行链路聚合载波组与下行链路聚合载波组的对应关系进
行半静态配置。 Preferably, in the foregoing random access method, the base station enters the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network. Line semi-static configuration.
优选地， 在上述的随机接入方法中， 下行链路聚合载波组包括一个下 行链路聚合载波。 Preferably, in the random access method described above, the downlink aggregated carrier group includes a downlink aggregated carrier.
优选地， 在上述的随机接入方法中， 下行链路聚合载波组包括多个下 行链路聚合载波。 Preferably, in the random access method described above, the downlink aggregated carrier group includes a plurality of downlink aggregated carriers.
为了实现上述目的， 根据本发明的另一方面， 提供了一种用于长期演 进***的随机接入装置， 包括： 分组模块， 用于基站根据需要支持的所有 用户终端的带宽能力， 对上行链路的聚合载波进行分组， 得到上行链路聚 合载波组； 设置模块， 用于基站设置与上行链路聚合载波组相对应的下行 链路聚合载波组， 下行链路聚合载波组与上行链路聚合载波组形成聚合载 波对； 参数模块， 用于基站确定聚合载波对的物理随机接入信道参数； 接 入模块， 用于根据参数模块确定的物理随机接入信道参数执行接入。 In order to achieve the above object, according to another aspect of the present invention, a random access apparatus for a long term evolution system is provided, including: a packet module, configured, by a base station, according to a bandwidth capability of all user terminals supported by the base station, The aggregated carrier of the path is grouped to obtain an uplink aggregated carrier group, and the setting module is configured to set, by the base station, a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, and the downlink aggregated carrier group and the uplink aggregation The carrier group forms an aggregated carrier pair; the parameter module is configured to determine, by the base station, a physical random access channel parameter of the aggregated carrier pair; and the access module is configured to perform access according to the physical random access channel parameter determined by the parameter module.
优选地， 在上述的随机接入装置中， 参数模块具体包括： 接收单元， 用于基站接收来自第一用户终端的随机接入请求消息； 对应单元， 用于基 站确定与第一用户终端带宽能力相符的上行链路聚合载波组相对应的第一 下行链路聚合载波组； 响应单元， 用于基站在第一下行链路聚合载波组上 发射随机接入响应消息， 随机接入响应消息包括物理随机接入信道参数。 Preferably, in the foregoing random access device, the parameter module specifically includes: a receiving unit, configured to receive, by the base station, a random access request message from the first user terminal; and a corresponding unit, configured to determine, by the base station, the bandwidth capability of the first user terminal a first downlink aggregated carrier group corresponding to the corresponding uplink aggregated carrier group; a response unit, configured to send, by the base station, a random access response message, a random access response message, on the first downlink aggregated carrier group Includes physical random access channel parameters.
优选地， 上述的随机接入装置还包括： 配置模块， 用于基站根据无线 通信网络的当前环境与负载情况对上行链路聚合载波组与下行链路聚合载 波组的对应关系进行半静态配置。 Preferably, the foregoing random access device further includes: a configuration module, configured to perform semi-static configuration on the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network.
本发明用于长期演进***的随机接入方法及装置， 首先根据需要支持 的所有用户终端的带宽能力， 对上行链路的聚合载波进行分组， 然后设置 与上行链路聚合载波组对应的下行链路聚合载波组， 最后确定上行链路聚 合载波组与下行链路聚合载波组构成的聚合载波对的物理随机接入信道参 数， 本发明使得基站在对用户终端进行随机接入时只需利用该用户终端对
应的特定下行链路聚合载波组， 而无需占用其他的下行链路载波资源， 降 低了物理随机接入过程中对信道资源的占用， 有助于抑制虚警报和提高检 测性能， 从而提高了载波资源的利用率及随机接入的效率， 所以克服了在 非对称载波情况下， 要求所有组成载波必须后向兼容才能支持所有带宽能 力的用户终端接入， 基站的资源调度存在较大的限制， 为了区分上行链路 载波所对应的下行链路载波， 必须为上行链路载波分配更多资源， 从而导 致虚警报和误检测性能的损失， 并且在上行链路组成载波上资源请求带来 开销的增加的问题。 附图说明 The present invention is directed to a random access method and apparatus for a long term evolution system. First, according to the bandwidth capability of all user terminals that need to be supported, the uplink aggregated carriers are grouped, and then the downlink corresponding to the uplink aggregated carrier group is set. The method comprises: aggregating a carrier group, and finally determining a physical random access channel parameter of the aggregated carrier pair formed by the uplink aggregated carrier group and the downlink aggregated carrier group, so that the base station only needs to use the random access to the user terminal User terminal pair The specific downlink aggregation carrier group should not occupy other downlink carrier resources, which reduces the occupation of channel resources in the physical random access process, helps suppress false alarms and improves detection performance, thereby improving the carrier. Resource utilization and random access efficiency, so that in the case of asymmetric carriers, all component carriers must be backward compatible to support user access of all bandwidth capabilities. The resource scheduling of the base station has a large limitation. In order to distinguish the downlink carrier corresponding to the uplink carrier, more resources must be allocated for the uplink carrier, resulting in loss of false alarm and false detection performance, and resource request overhead on the uplink component carrier. Increased problem. DRAWINGS
图 1示出了根据本发明第一实施例的随机接入方法的流程图； 图 2示出了根据本发明第二实施例的随机接入方法的流程图； 图 3示出了根据本发明第三实施例的随机接入装置的结构图。 具体实施方式 1 is a flow chart showing a random access method according to a first embodiment of the present invention; FIG. 2 is a flow chart showing a random access method according to a second embodiment of the present invention; A block diagram of a random access device of the third embodiment. detailed description
下面将参考附图并结合实施例， 来详细说明本发明。 The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.
图 1 示出了根据本发明第一实施例的随机接入方法的流程图， 如图 1 所示， 该方法包括以下步骤： FIG. 1 is a flow chart showing a random access method according to a first embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:
步骤 S102 , BS根据需要支持的所有 UT的带宽能力， 对上行链路的聚 合载波进行分组， 得到上行链路聚合载波组； Step S102: The BS groups the uplink aggregate carriers according to the bandwidth capabilities of all the UTs that need to be supported, to obtain an uplink aggregated carrier group.
步骤 S104 , BS设置与上行链路聚合载波组相对应的下行链路聚合载波 组， 下行链路聚合载波组与上行链路聚合载波组形成聚合载波对； Step S104: The BS sets a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, and the downlink aggregated carrier group and the uplink aggregated carrier group form an aggregated carrier pair.
步骤 S106 , BS确定聚合载波对的物理随机接入信道参数； Step S106: The BS determines a physical random access channel parameter of the aggregated carrier pair.
步骤 S108 , BS根据所确定的物理随机接入信道参数执行接入。 Step S108: The BS performs access according to the determined physical random access channel parameter.
本实施例首先根据需要支持的所有 UT的带宽能力，对上行链路的聚合 载波进行分组， 然后设置与上行链路聚合载波组对应的下行链路聚合载波
组， 最后确定上行链路聚合载波组与下行链路聚合载波组构成的聚合载波 对的物理随机接入信道参数， 其中， BS要确定无线通信网络中需要支持的 所有 UT的带宽能力，就需要了解当前无线通信***中支持的 UT的带宽能 力情况， 用以确定随机接入过程中所需要支持的聚合的载波情况。 这样做， 使得 BS在对 UT进行随机接入时只需利用该 UT对应的特定下行链路聚合 载波组， 而无需占用其他的下行链路载波资源， 降低了物理随机接入过程 中对信道资源的占用， 有助于抑制虚警报和提高检测性能， 从而提高了载 波资源的利用率及随机接入的效率， 所以克服了在非对称载波情况下， 要 求所有组成载波必须后向兼容才能支持所有带宽能力的 UT接入， BS的资 源调度存在较大的限制， 为了区分上行链路载波所对应的下行链路载波， 必须为上行链路载波分配更多资源， 从而导致虚警报和误检测性能的损失， 并且在上行链路组成载波上资源请求带来开销的增加的问题。 In this embodiment, the uplink aggregated carriers are first grouped according to the bandwidth capabilities of all UTs that need to be supported, and then the downlink aggregated carriers corresponding to the uplink aggregated carrier groups are set. And determining, by the group, the physical random access channel parameters of the aggregated carrier pair formed by the uplink aggregated carrier group and the downlink aggregated carrier group, where the BS needs to determine the bandwidth capability of all the UTs that need to be supported in the wireless communication network, Understand the bandwidth capabilities of the UTs currently supported in the wireless communication system to determine the aggregated carrier conditions that need to be supported during the random access procedure. In this way, the BS only needs to utilize a specific downlink aggregated carrier group corresponding to the UT when performing random access to the UT, without occupying other downlink carrier resources, and reducing channel resources in the physical random access process. The occupation can help suppress false alarms and improve detection performance, thereby improving the utilization of carrier resources and the efficiency of random access. Therefore, in the case of asymmetric carriers, all component carriers are required to be backward compatible to support all. For bandwidth-capable UT access, the resource scheduling of the BS has a large limitation. In order to distinguish the downlink carrier corresponding to the uplink carrier, more resources must be allocated for the uplink carrier, resulting in false alarm and false detection performance. The loss, and the resource request on the uplink component carrier brings about an increase in overhead.
优选地， 在上述的随机接入方法中， 步骤 S106具体包括： BS接收来 自 UT的随机接入请求消息； BS确定与 UT带宽能力相符的上行链路聚合 载波组相对应的下行链路聚合载波组； BS在所述下行链路聚合载波组上发 射随机接入响应消息， 随机接入响应消息包括物理随机接入信道参数。 Preferably, in the foregoing random access method, step S106 specifically includes: the BS receives a random access request message from the UT; and the BS determines a downlink aggregated carrier corresponding to the uplink aggregated carrier group that matches the UT bandwidth capability. The BS transmits a random access response message on the downlink aggregated carrier group, and the random access response message includes a physical random access channel parameter.
本实施例中的 BS确定无线通信网络中 UT的带宽能力， 在 UT进行随 机接入规程时， BS设置一个或多个下行链路组成载波组， 每个下行链路组 成载波组与一个或几个 UT带宽能力的上行链路载波相匹配，每个下行链路 ( Down Link, DL )组成载波组上设置一种随机接入响应消息 , 当 BS接收 到 UT的随机接入请求时， BS只在与当前 UT带宽能力相符的上行链路载 波匹配的下行链路组成载波组上发射随机接入响应消息，在 BS发射的前导 消息不变的情况下， 广播不同的物理随机接入信道参数以获知更多的 UT 的带宽能力信息。 对于物理随机接入信道， BS只检测 UT能够监听的下行 链路载波， 同时， 只在相应的下行链路载波上发送随机接入响应消息， 这
样解决了物理随机接入过程中对信道资源占用过大的问题。 The BS in this embodiment determines the bandwidth capability of the UT in the wireless communication network. When the UT performs the random access procedure, the BS sets one or more downlink component carrier groups, and each downlink component carrier group and one or several The UT bandwidth capability uplink carriers are matched, and each downlink (DL) group is configured to set a random access response message. When the BS receives the UT random access request, the BS only Transmitting a random access response message on a downlink component carrier group matched with an uplink carrier that matches the current UT bandwidth capability, and broadcasting different physical random access channel parameters when the preamble message transmitted by the BS is unchanged Learn more about the bandwidth capabilities of the UT. For the physical random access channel, the BS only detects the downlink carrier that the UT can listen to, and at the same time, only sends a random access response message on the corresponding downlink carrier, which The problem of excessive occupation of channel resources in the process of physical random access is solved.
优选地， 在上述的随机接入方法中， 物理随机接入信道参数包括时间、 频率与码资源， 从而获知更多 UT的带宽能力信息。 Preferably, in the foregoing random access method, the physical random access channel parameters include time, frequency and code resources, thereby obtaining more bandwidth capability information of the UT.
优选地， 在上述的随机接入方法中， 每个上行链路聚合载波组对应于 具有类似带宽能力的 UT。 这样做， 使得同组的 UT进行随机接入时， 釆用 相同的上行链路资源， 这些聚合后形成的新资源完全后向兼容。 Preferably, in the above random access method, each uplink aggregated carrier group corresponds to a UT having similar bandwidth capability. In this way, when the same group of UTs perform random access, the same uplink resources are used, and the new resources formed after the aggregation are completely backward compatible.
优选地， 在上述的随机接入方法中， BS才艮据无线通信网络的当前环境 与负载情况对上行链路聚合载波组与下行链路聚合载波组的对应关系进行 半静态配置。 上行链路聚合载波组与下行链路聚合载波组的对应关系， 包 括上行链路的载波资源如何与不同的下行链路载波相对应， 这种对应关系 可以是固定的， 也可以通过 BS进行半静态配置， 本实施例为 BS进行半静 态配置的情况， 即 BS根据无线通信网络环境的变化和负载情况等， 增加或 减少与上行链路载波对应的下行链路组成载波组， 使得物理随机接入信道 资源完全可以控制在合理的范围之内，从而有效地降低了 BS调度的复杂度 及物理随机接入信道所需要承载的参数占用的资源开销。 Preferably, in the foregoing random access method, the BS performs semi-static configuration on the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network. Corresponding relationship between the uplink aggregation carrier group and the downlink aggregation carrier group, including how the uplink carrier resources correspond to different downlink carriers, the correspondence may be fixed, or may be performed by the BS. Static configuration, this embodiment is a case where the BS performs semi-static configuration, that is, the BS increases or decreases the downlink component carrier group corresponding to the uplink carrier according to the change of the wireless communication network environment and the load condition, so that the physical random connection The inbound channel resources can be completely controlled within a reasonable range, thereby effectively reducing the complexity of the BS scheduling and the resource overhead occupied by the parameters that the physical random access channel needs to bear.
优选地， 在上述的随机接入方法中， 下行链路聚合载波组包括一个下 行链路聚合载波。 本实施例通过设置非对称的上行链路和下行链路的一个 对应的组成载波组的载波资源能够分别容纳不同能力的 UT随机接入，确保 了无线通信网络的后向兼容性能。 Preferably, in the random access method described above, the downlink aggregated carrier group includes a downlink aggregated carrier. In this embodiment, by setting the carrier resources of a corresponding component carrier group of the asymmetric uplink and the downlink, UT random access of different capabilities can be respectively accommodated, thereby ensuring the backward compatibility performance of the wireless communication network.
优选地， 在上述的随机接入方法中， 下行链路聚合载波组包括多个下 行链路聚合载波。 本实施例通过设置非对称的上行链路和下行链路的多个 对应的组成载波组的载波资源能够分别容纳不同能力的 UT随机接入，确保 了无线通信网络的后向兼容性能。 Preferably, in the random access method described above, the downlink aggregated carrier group includes a plurality of downlink aggregated carriers. The present embodiment can accommodate different capabilities of UT random access by setting carrier resources of a plurality of corresponding component carriers of the asymmetric uplink and downlink, respectively, and ensuring backward compatibility performance of the wireless communication network.
优选地， 在上述的随机接入方法中， BS执行接入可以按照已有接入方 式进行。
图 2 示出了根据本发明第二实施例的随机接入方法的流程图， 如图 2 所示， 该方法包括以下步骤： Preferably, in the foregoing random access method, the BS performs access according to an existing access mode. 2 is a flow chart showing a random access method according to a second embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:
步骤 S202 , BS确定无线通信网络中需要支持的所有 UT的带宽能力； 步骤 S204 , BS根据 UT的带宽能力将上行链路的聚合载波进行分组； 步骤 S206 , BS设置下行链路聚合载波或载波组与上行链路聚合载波组 对应； Step S202, the BS determines the bandwidth capability of all the UTs that need to be supported in the wireless communication network. Step S204: The BS groups the uplink aggregated carriers according to the bandwidth capability of the UT. Step S206: The BS sets the downlink aggregated carrier or carrier group. Corresponding to the uplink aggregated carrier group;
步骤 S208 , BS确定上行链路、 下行链路聚合载波对的物理随机接入信 道参数； Step S208: The BS determines physical random access channel parameters of the uplink and downlink aggregated carrier pairs.
步骤 S210 , BS根据所确定的物理随机接入信道参数执行接入。 Step S210: The BS performs access according to the determined physical random access channel parameter.
图 3 示出了才艮据本发明第三实施例的随机接入装置的结构图， 如图 3 所示， 该装置包括： FIG. 3 is a structural diagram of a random access device according to a third embodiment of the present invention. As shown in FIG. 3, the device includes:
分组模块 302 , 用于 BS根据需要支持的所有 UT的带宽能力， 对上行 链路的聚合载波进行分组， 得到上行链路聚合载波组； The grouping module 302 is configured to: the BS aggregates the aggregated carriers of the uplink according to the bandwidth capability of all the UTs that need to be supported, to obtain an uplink aggregated carrier group;
设置模块 304, 用于 BS设置与上行链路聚合载波组相对应的下行链路 聚合载波组， 下行链路聚合载波组与上行链路聚合载波组形成聚合载波对； 参数模块 306 , 用于 BS确定聚合载波对的物理随机接入信道参数； 接入模块 308, 用于 BS根据参数模块确定的物理随机接入信道参数执 行接入。 The setting module 304 is configured to set, by the BS, a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, where the downlink aggregated carrier group and the uplink aggregated carrier group form an aggregated carrier pair; and the parameter module 306 is used for the BS. The physical random access channel parameter of the aggregated carrier pair is determined; the access module 308 is configured to perform access by the BS according to the physical random access channel parameter determined by the parameter module.
本实施例首先釆用分组模块 302根据需要支持的所有 UT的带宽能力， 对上行链路的聚合载波进行分组， 然后釆用设置模块 304设置与上行链路 聚合载波组对应的下行链路聚合载波组， 最后釆用参数模块 306确定上行 链路聚合载波组与下行链路聚合载波组构成的聚合载波对的物理随机接入 信道参数， 这样做， 使得 BS在对 UT进行随机接入时只需利用该 UT对应 的特定下行链路聚合载波组， 而无需占用其他的下行链路载波资源， 降低 了物理随机接入过程中对信道资源的占用， 有助于抑制虚警报和提高检测
性能， 从而提高了载波资源的利用率及随机接入的效率， 所以克服了在非 对称载波情况下， 要求所有组成载波必须后向兼容才能支持所有带宽能力 的 UT接入， BS的资源调度存在较大的限制， 为了区分上行链路载波所对 应的下行链路载波， 必须为上行链路载波分配更多资源， 从而导致虚警报 和误检测性能的损失， 并且在上行链路组成载波上资源请求带来开销的增 加的问题。 In this embodiment, the packet module 302 firstly groups the uplink aggregated carriers according to the bandwidth capabilities of all the UTs that need to be supported, and then uses the setting module 304 to set the downlink aggregated carrier corresponding to the uplink aggregated carrier group. The group, the last parameter module 306 determines the physical random access channel parameters of the aggregated carrier pair formed by the uplink aggregated carrier group and the downlink aggregated carrier group, so that the BS only needs to perform random access to the UT. The specific downlink aggregated carrier group corresponding to the UT is used without occupying other downlink carrier resources, which reduces the occupation of channel resources in the physical random access process, and helps to suppress false alarms and improve detection. Performance, thereby improving the utilization of carrier resources and the efficiency of random access. Therefore, in the case of asymmetric carriers, it is required that all component carriers must be backward compatible to support UT access of all bandwidth capabilities, and resource scheduling of BS exists. A larger limitation, in order to distinguish the downlink carrier corresponding to the uplink carrier, more resources must be allocated for the uplink carrier, resulting in loss of false alarm and false detection performance, and resources on the uplink component carrier. The request brings an increase in overhead.
优选地， 在上述的随机接入装置中， 参数模块 306具体包括： 接收单 元， 用于 BS接收来自第一 UT的随机接入请求消息； 对应单元， 用于 BS 确定与第一 UT 带宽能力相符的上行链路聚合载波组相对应的第一下行链 路聚合载波组； 响应单元， 用于 BS在第一下行链路聚合载波组上发射随机 接入响应消息， 随机接入响应消息包括物理随机接入信道参数。 Preferably, in the foregoing random access device, the parameter module 306 specifically includes: a receiving unit, configured to receive, by the BS, a random access request message from the first UT; and a corresponding unit, configured to determine, by the BS, the bandwidth capability of the first UT a first downlink aggregated carrier group corresponding to the uplink aggregated carrier group; a response unit, configured to transmit, by the BS, a random access response message on the first downlink aggregated carrier group, where the random access response message includes Physical random access channel parameters.
本实施例中的 BS确定无线通信网络中 UT的带宽能力， 在 UT进行随 机接入规程时， BS设置一个或多个下行链路组成载波组， 每个下行链路组 成载波组与一个或几个 UT带宽能力的上行链路载波相匹配，每个 DL组成 载波组上设置一种随机接入响应消息，当 BS接收到 UT的随机接入请求时， BS只在与当前 UT带宽能力相符的上行链路载波匹配的下行链路组成载波 组上发射随机接入响应消息， 在 BS发射的前导消息不变的情况下， 广播不 同的物理随机接入信道参数以获知更多的 UT的带宽能力信息。对于物理随 机接入信道， BS只检测 UT能够监听的下行链路载波， 同时， 只在相应的 下行链路载波上发送随机接入响应消息， 这样解决了物理随机接入过程中 对信道资源占用过大的问题。 The BS in this embodiment determines the bandwidth capability of the UT in the wireless communication network. When the UT performs the random access procedure, the BS sets one or more downlink component carrier groups, and each downlink component carrier group and one or several The UT bandwidth capability uplink carriers are matched, and each DL component carrier group is provided with a random access response message. When the BS receives the UT random access request, the BS only matches the current UT bandwidth capability. The downlink carrier-matched downlink component transmits a random access response message on the carrier group, and broadcasts different physical random access channel parameters to obtain more UT bandwidth capability if the preamble message transmitted by the BS is unchanged. information. For the physical random access channel, the BS only detects the downlink carrier that the UT can listen to, and only sends the random access response message on the corresponding downlink carrier, thus solving the channel resource occupation in the physical random access process. Too big a problem.
优选地， 上述的随机接入装置还包括： 配置模块， 用于 BS根据无线通 信网络的当前环境与负载情况对上行链路聚合载波组与下行链路聚合载波 组的对应关系进行半静态配置。 上行链路聚合载波组与下行链路聚合载波 组的对应关系， 包括上行链路的载波资源如何与不同的下行链路载波相对
应， 这种对应关系可以是固定的， 也可以通过 BS进行半静态配置， 本实施 例为 BS进行半静态配置的情况， 即 BS根据无线通信网络环境的变化和负 载情况等， 增加或减少与上行链路载波对应的下行链路组成载波组， 使得 物理随机接入信道资源完全可以控制在合理的范围之内， 从而有效地降低 了 BS 调度的复杂度及物理随机接入信道所需要承载的参数占用的资源开 销。 Preferably, the foregoing random access device further includes: a configuration module, configured to perform semi-static configuration on the correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group according to the current environment and the load condition of the wireless communication network. Correspondence between the uplink aggregated carrier group and the downlink aggregated carrier group, including how the uplink carrier resources are opposite to different downlink carriers The correspondence may be fixed or semi-statically configured by the BS. This embodiment is a case where the BS performs semi-static configuration, that is, the BS increases or decreases according to changes in the wireless communication network environment and load conditions. The downlink corresponding to the uplink carrier constitutes a carrier group, so that the physical random access channel resources can be completely controlled within a reasonable range, thereby effectively reducing the complexity of the BS scheduling and the physical random access channel needs to be carried. The resource overhead occupied by the parameter.
从以上的描述中， 可以看出， 本发明上述的实施例降低了物理随机接 入过程中对信道资源的占用， 有助于抑制虚警报和提高检测性能， 从而提 高了载波资源的利用率及随机接入的效率。 From the above description, it can be seen that the foregoing embodiment of the present invention reduces the occupation of channel resources in the physical random access process, helps suppress false alarms, and improves detection performance, thereby improving utilization of carrier resources and The efficiency of random access.
显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤 可以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， 或者 分布在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执 行的程序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来 执行， 或者将它们分别制作成各个集成电路模块， 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。 Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于 本领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精 神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明 的保护范围之内。
The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims
1.一种用于长期演进***的随机接入方法， 其特征在于， 包括以下步 骤： A random access method for a long term evolution system, comprising the steps of:
基站根据需要支持的所有用户终端的带宽能力， 对上行链路的聚合载 波进行分组， 得到上行链路聚合载波组； The base station groups the uplink aggregated carriers according to the bandwidth capability of all the user terminals that need to be supported, to obtain an uplink aggregated carrier group;
所述基站设置与所述上行链路聚合载波组相对应的下行链路聚合载波 组， 所述下行链路聚合载波组与所述上行链路聚合载波组形成聚合载波对； 所述基站确定所述聚合载波对的物理随机接入信道参数， 之后根据所 确定的物理随机接入信道参数执行接入。 The base station sets a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, and the downlink aggregated carrier group forms an aggregated carrier pair with the uplink aggregated carrier group; The physical random access channel parameters of the aggregated carrier pair are described, and then access is performed according to the determined physical random access channel parameters.
2.根据权利要求 1 所述的随机接入方法， 其特征在于， 所述基站确定 所述聚合载波对的物理随机接入信道参数具体包括： The random access method according to claim 1, wherein the determining, by the base station, the physical random access channel parameters of the aggregated carrier pair comprises:
所述基站接收来自用户终端的随机接入请求消息； The base station receives a random access request message from a user terminal;
确定与所述用户终端带宽能力相符的上行链路聚合载波组相对应的下 行链路聚合载波组； Determining a downlink aggregated carrier group corresponding to an uplink aggregated carrier group that matches a bandwidth capability of the user terminal;
在所述下行链路聚合载波组上发射随机接入响应消息， 所述随机接入 响应消息包括所述物理随机接入信道参数。 And transmitting a random access response message on the downlink aggregated carrier group, where the random access response message includes the physical random access channel parameter.
3.根据权利要求 1 所述的随机接入方法， 其特征在于， 所述物理随机 接入信道参数包括时间、 频率与码资源。 The random access method according to claim 1, wherein the physical random access channel parameters include time, frequency, and code resources.
4.根据权利要求 1 所述的随机接入方法， 其特征在于， 每个所述上行 链路聚合载波组对应于具有类似带宽能力的用户终端。 The random access method according to claim 1, wherein each of the uplink aggregated carrier groups corresponds to a user terminal having similar bandwidth capability.
5.根据权利要求 1 所述的随机接入方法， 其特征在于， 该方法进一步 包括： 所述基站根据无线通信网络的当前环境与负载情况对所述上行链路 聚合载波组与所述下行链路聚合载波组的对应关系进行半静态配置。 The random access method according to claim 1, wherein the method further comprises: the base station, the uplink aggregated carrier group and the downlink according to a current environment and a load condition of a wireless communication network; The correspondence between the channel aggregation carrier groups is semi-statically configured.
6.根据权利要求 1 所述的随机接入方法， 其特征在于， 所述下行链路 聚合载波组包括一个下行链路聚合载波。
The random access method according to claim 1, wherein the downlink aggregated carrier group comprises one downlink aggregated carrier.
7.根据权利要求 1 所述的随机接入方法， 其特征在于， 所述下行链路 聚合载波组包括多个下行链路聚合载波。 The random access method according to claim 1, wherein the downlink aggregated carrier group comprises a plurality of downlink aggregated carriers.
8.—种用于长期演进***的随机接入装置， 其特征在于， 包括： 分组 模块、 设置模块、 参数模块和接入模块； 其中， 8. A random access device for a long term evolution system, comprising: a grouping module, a setting module, a parameter module, and an access module; wherein
所述分组模块， 用于基站根据需要支持的所有用户终端的带宽能力， 对上行链路的聚合载波进行分组， 得到上行链路聚合载波组； The grouping module is configured to: according to the bandwidth capability of all user terminals that are supported by the base station, group the uplink aggregated carriers to obtain an uplink aggregated carrier group;
所述设置模块， 用于所述基站设置与所述上行链路聚合载波组相对应 的下行链路聚合载波组， 所述下行链路聚合载波组与所述上行链路聚合载 波组形成聚合载波对； The setting module is configured to set, by the base station, a downlink aggregated carrier group corresponding to the uplink aggregated carrier group, where the downlink aggregated carrier group forms an aggregated carrier with the uplink aggregated carrier group Correct;
所述参数模块， 用于所述基站确定所述聚合载波对的物理随机接入信 道参数； The parameter module is configured to determine, by the base station, a physical random access channel parameter of the aggregated carrier pair;
所述接入模块， 用于根据参数模块确定的物理随机接入信道参数执行 接入。 The access module is configured to perform access according to a physical random access channel parameter determined by the parameter module.
9.根据权利要求 8所述的装置， 其特征在于， 所述参数模块具体包括： 接收单元、 对应单元和响应单元， 其中， The device according to claim 8, wherein the parameter module specifically includes: a receiving unit, a corresponding unit, and a response unit, where
所述接收单元， 用于所述基站接收来自用户终端的随机接入请求消息； 所述对应单元， 用于所述基站确定与所述用户终端带宽能力相符的上 行链路聚合载波组相对应的下行链路聚合载波组； The receiving unit is configured to receive, by the base station, a random access request message from a user terminal, where the corresponding unit is configured to determine, by the base station, an uplink aggregated carrier group that matches a bandwidth capability of the user terminal. Downlink aggregation carrier group;
所述响应单元， 用于所述基站在所述下行链路聚合载波组上发射随机 接入响应消息， 所述随机接入响应消息包括所述物理随机接入信道参数。 The response unit is configured to send, by the base station, a random access response message on the downlink aggregated carrier group, where the random access response message includes the physical random access channel parameter.
10. 根据权利要求 8或 9所述的装置， 其特征在于， 该装置还包括配置 模块， 用于所述基站根据无线通信网络的当前环境与负载情况对所述上行 链路聚合载波组与所述下行链路聚合载波组的对应关系进行半静态配置。
The device according to claim 8 or 9, wherein the device further comprises a configuration module, configured, by the base station, to the uplink aggregated carrier group according to a current environment and a load condition of the wireless communication network The correspondence between the downlink aggregated carrier groups is semi-statically configured.
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