WO2012083889A1 - 通信信息发送方法、装置和系统 - Google Patents

通信信息发送方法、装置和系统 Download PDF

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Publication number
WO2012083889A1
WO2012083889A1 PCT/CN2011/084619 CN2011084619W WO2012083889A1 WO 2012083889 A1 WO2012083889 A1 WO 2012083889A1 CN 2011084619 W CN2011084619 W CN 2011084619W WO 2012083889 A1 WO2012083889 A1 WO 2012083889A1
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WO
WIPO (PCT)
Prior art keywords
communication information
upper limit
backoff
base station
resource
Prior art date
Application number
PCT/CN2011/084619
Other languages
English (en)
French (fr)
Inventor
韩广林
权威
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP11851120.3A priority Critical patent/EP2651174B1/en
Publication of WO2012083889A1 publication Critical patent/WO2012083889A1/zh
Priority to US13/925,075 priority patent/US9468021B2/en
Priority to US15/265,583 priority patent/US20170006600A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • H04W74/0841Random access procedures, e.g. with 4-step access with collision treatment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/53Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a communication information sending method, apparatus, and system. Background technique
  • the same communication cell there may be multiple terminals simultaneously transmitting random access signals to the base station.
  • the multiple terminals When multiple terminals send random access signals to the base station, the multiple terminals will use the same contention resources at the same time, which may lead to competition conflicts and cause the service transmission of multiple terminals to fail.
  • each terminal that fails to compete may receive the maximum backoff limit for the next random access initiated from the message sent by the network side. After receiving the maximum backoff limit, the terminal that fails to compete selects a random value from 0 to the maximum backoff limit as the backoff time for the next random access.
  • each terminal that fails to compete randomly selects a backoff time according to the maximum backoff upper limit, and thus each terminal may select a longer backoff time, thereby causing the terminal to send uplink data delay.
  • the embodiment of the invention provides a method, a device and a system for transmitting communication information, which can enable the terminal to select an appropriate backoff time and reduce the delay in transmitting the uplink data by the terminal.
  • the embodiment of the invention provides a method for transmitting communication information, including:
  • the back-off upper limit is determined based on the first back-off upper limit, and the back-off time of resending the communication information is selected according to the back-off upper limit.
  • An embodiment of the present invention provides a communication information sending apparatus, including:
  • a sending module configured to send communication information to the base station
  • An upper limit obtaining module configured to acquire a first backoff upper limit according to the number of failed transmissions after the sending module sends the communication information to the base station fails to be sent;
  • a first selection module configured to determine a backoff upper limit according to the first backoff upper limit acquired by the upper limit acquisition module, and select a backoff time for resending the communication information according to the backoff upper limit.
  • the embodiment of the present invention provides a communication information transmission system, which includes a base station and a terminal, and the terminal includes any communication information sending apparatus provided by the embodiment of the present invention.
  • the method, device and system for transmitting communication information after the terminal fails to send the communication information to the base station, the terminal obtains the first back-off upper limit according to the number of failed transmissions, determines the back-off upper limit according to the first back-off upper limit, and according to the back-off The upper limit selects the backoff time for resending the communication information. Therefore, the terminal can obtain an appropriate backoff upper limit according to the number of failures of transmitting the communication information, thereby reducing the delay in transmitting the uplink data by the terminal.
  • Embodiment 2 is a flowchart of Embodiment 2 of a method for transmitting communication information according to the present invention
  • Embodiment 1 of a communication information transmitting apparatus according to the present invention
  • FIG. 4 is a schematic diagram of Embodiment 2 of a communication information transmitting apparatus according to the present invention. detailed description
  • Embodiment 1 is a flowchart of Embodiment 1 of a method for transmitting communication information according to the present invention. As shown in FIG. 1, the method includes:
  • Step 101 Send communication information to a base station.
  • the execution entity of this embodiment is a user equipment (User Equipment, the following cartridge is called: UE).
  • the UE may send communication information to the base station, where the communication information may be a random access signal, a scheduling request resource signaling, or service data.
  • Step 102 After sending the communication information to the base station fails to be sent, the first back-off upper limit is obtained according to the number of failed transmissions.
  • the UE can learn that the UE can know that the sending communication information is lost through the self-detection or the indication on the network side. For example, if the UE does not receive the acknowledgment message within a certain period of time, or the UE detects the collision signal sent by other UEs or the network side, the UE may consider that the communication information fails to be transmitted; for example, the UE receives the network side transmission. If the feedback information of the failure is successful, or the UE does not receive the feedback information of the network side, it may be considered that the communication information fails to be transmitted.
  • the UE After the UE learns that the communication information to the base station fails to be transmitted, the UE obtains the first backoff limit according to the number of failed transmissions. Specifically, for the general communication information, the more the number of failures, the larger the first backoff limit is. For communication information with limited transmission time, the more the number of failures, the smaller the first back-off limit.
  • the transmission failure may not be caused by the network load. Therefore, for the UE with fewer transmission failures, the smaller first backoff upper limit may be selected, thereby reducing The delay in which the UE sends uplink data.
  • Step 103 Determine an back-off upper limit according to the first back-off upper limit, and select a back-off time for resending the communication information according to the back-off upper limit.
  • the UE selects the obtained first backoff upper limit as the backoff upper limit of the selected backoff time, and then the UE randomly selects a backoff time to resend the communication information from 0 to the backoff upper limit.
  • the UE after the UE fails to send the communication information to the base station, the UE obtains the first backoff upper limit according to the number of failed transmissions, determines the backoff upper limit according to the first backoff upper limit, and selects the backoff time of resending the communication information according to the backoff upper limit. . Therefore, the UE can obtain an appropriate backoff upper limit according to the number of failures of transmitting the communication information, thereby reducing the delay in transmitting the uplink data by the UE.
  • Embodiment 2 is a flowchart of Embodiment 2 of a method for transmitting communication information according to the present invention. As shown in FIG. 2, the method includes:
  • Step 200 The UE acquires contention resource configuration information.
  • the UE may obtain the contention configuration information of the cell through a dedicated message and/or a system broadcast message.
  • the dedicated information may be RRC (Radio Resource Control) signaling.
  • the contention resource configuration information includes at least one of the following information: a. Whether the current cell allows the contention to be sent, or whether the current cell has an indication of the resource allocation configuration;
  • Location information of the contention resource for example: the frequency domain resource block, the frequency domain reference position and the offset position used by the contention resource, the frame number (or subframe number) and the time domain period of the competition resource corresponding to the time domain And calculating related information of the foregoing location information;
  • Step 201 The base station allocates at least one resource identifier to each UE corresponding to the base station.
  • Each UE corresponding to the base station is each UE served by the base station.
  • the embodiment may further include the base station allocating the UE.
  • the base station may allocate one or more elements of the contention resources for each UE that it serves in advance (Contention Based Transmission Radio Network Temporary Identity, the tube is called: CB-RNTI) And then, when the base station sends the contention resource to the UE, the base station can carry the identifier allocated for the UE in the contention resource.
  • CB-RNTI Contention Based Transmission Radio Network Temporary Identity
  • the base station assigning the CB-RNTI to the UE may include the following two methods:
  • the base station divides the UEs it serves into multiple groups, each group includes at least one UE, and each UE may be included in a different group, and then the base station allocates one CB-RNTI for each group, thereby equivalent to each base station for each
  • the UE allocates a CB-RNTI; when the UE1 belongs to only one group, the base station allocates one CB-RNTI to the UE1.
  • the base station allocates multiple CB-RNTL base stations to the UE1.
  • Each set of scheduled contention resources includes a CB-RNTI allocated for the group, and the contention resources can be commonly used by all UEs included in each group.
  • the base station allocates one or more CB-RNTIs for each UE; when the base station allocates one CB-RNTI for each UE, one CB-RNTI may correspond to multiple contention resources; When multiple CB-RNTIs are configured, one CB-RNTI can correspond to one contention resource.
  • Step 202 The base station sends a contention resource that includes a resource identifier, where each resource identifier corresponds to at least one contention resource.
  • the contention resource in this embodiment may be a contention resource for sending a random access signal, scheduling request resource signaling, or service data.
  • the base station After the base station allocates the resource identifier to the UE, the base station sends the contention resource including the resource identifier, so that the contention resource is scheduled to each UE.
  • Each resource identifier may correspond to one contention resource, and may also correspond to multiple contention resources.
  • Step 203 The UE receives, according to the resource identifier allocated by the base station for the UE, at least one contention resource that is sent by the base station to send the communication information.
  • the base station After the base station allocates the resource identifier to each UE, the base station sends the contention resource including the resource identifier, and each UE can receive the contention resource allocated to itself according to the resource identifier included in the contention resource sent by the base station. For example, the base station allocates the resource identifier A and the resource identifier B to the UE1, that is, all the contention resources including the resource identifier A and the resource identifier B are allocated to the UE1 by the base station, and the UE1 can receive all the resource identifier A and the resource identifier B. Competing for resources.
  • the UE may obtain one or more corresponding UEs by using a dedicated message and/or a system broadcast message in a certain time slot.
  • the competing resources are accurate time domain and/or frequency domain information; or the UE may obtain the competitive resources corresponding to the UE by detecting the physical layer scheduling signaling in each transmission gap by using physical layer signaling.
  • each contention resource may be delivered to the UE through one or more physical layer messages, and the UE identifies whether it is a contention resource sent to the UE through the CB-RNTI carried in the physical layer message.
  • Step 204 The UE selects one of the at least one contention resource to send the communication information.
  • the specific manner in which the UE selects one of the multiple competing resources may include:
  • the first way the UE randomly selects one of the plurality of competing resources to send the communication Information.
  • the UE obtains the first remainder from the number of the plurality of contention resources and the identifier information of the current terminal, and selects a contention resource corresponding to the first remainder to send the communication information. For example, if the UE2 is assigned 4 contention resources, and the identity of the UE2 is 7 or 11, the remainder 3 is obtained by modulating the identity of the UE2, so that the third contention resource is selected to send the communication information.
  • Step 205 The UE sends the communication information according to the selected contention resource.
  • Step 206 After transmitting the communication information to the base station, the UE obtains the first backoff upper limit according to the number of failed transmissions.
  • the value of the first back-off upper limit may increase as the number of transmission failures increases, or may decrease as the number of transmission failures increases.
  • the obtaining the first backoff upper limit according to the number of times of the transmission failure may include:
  • the backoff parameter may be an allocation interval of a contention resource required for transmitting communication information; Obtaining directly from the base station may also calculate the allocation interval according to the number of contention resources sent by the base station in a period of time.
  • the obtaining the first backoff upper limit according to the number of times of the transmission failure may specifically include:
  • the delay requirement of a communication information for sending is m seconds
  • the first time used to send the communication information is ml seconds
  • the first time is from the first
  • the first backoff upper limit corresponding to the communication information is m-ml
  • the service with higher delay requirement can be: triggering process, for example, the time when the communication information is sent to the time when the first time is obtained.
  • Step 207 After transmitting the communication information to the base station, the UE receives the second backoff upper limit sent by the base station.
  • the UE may receive the second backoff limit sent by the base station through physical layer signaling, system broadcast or dedicated message.
  • the embodiment does not limit the timing relationship between step 206 and step 207.
  • Step 208 The UE uses a minimum value of the first backoff upper limit and the second backoff upper limit as the backoff upper limit.
  • the UE selects a minimum value from the first backoff upper limit and the second backoff upper limit as the backoff upper limit, and then the UE may randomly select a backoff time according to the backoff upper limit to resend the communication information.
  • the embodiment may further include the step of setting a backoff lowering interval, so that the backoff times of the multiple UEs may be separated, that is, the embodiment may further include the following steps:
  • Step 209 The UE acquires a lower bound of the backoff of sending the communication information.
  • Step 210 The UE selects a backoff time for resending the communication information according to the backoff upper limit and the backoff lower limit.
  • the UE randomly selects a backoff time between the acquired backoff lower limit and the backoff upper limit, and then resends the communication information after the backoff time has elapsed.
  • the UE fails to send according to the sending failure.
  • the first backoff upper limit is acquired, and the second backoff upper limit sent by the base station is received, and the minimum value of the first backoff upper limit and the second backoff upper limit is used as the backoff upper limit, and the retransmission communication information may be selected according to the backoff upper limit and the backoff lower limit.
  • Backoff time Therefore, the UE can obtain an appropriate backoff upper limit according to the number of failures of transmitting the communication information, thereby reducing the delay in transmitting the uplink data by the UE.
  • the base station further allocates at least one contention resource for each UE, and the UE selects a contention resource to use, thereby further reducing the conflict of the contention.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing storage device includes the following steps:
  • the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
  • FIG. 3 is a schematic diagram of Embodiment 1 of a communication information sending apparatus according to the present invention. As shown in FIG. 3, the apparatus includes: a sending module 31, an upper limit acquiring module 33, and a first selecting module 35.
  • the transmitting module 31 is configured to send communication information to the base station.
  • the upper limit obtaining module 33 is configured to obtain a first back-off upper limit according to the number of failed transmissions after the transmitting module 31 fails to send the communication information to the base station.
  • the first selection module 35 is configured to determine a backoff upper limit according to the first backoff upper limit acquired by the upper limit acquisition module 33, and select a backoff time for resending the communication information according to the backoff upper limit.
  • the communication information transmitting apparatus provided in this embodiment may be included in the terminal described in the above embodiments.
  • the upper limit acquiring module obtains the first back-off upper limit according to the number of failed transmissions, and the first selecting module determines the back-off upper limit according to the first back-off upper limit, and according to the back-off upper limit. Select the backoff time for resending communication information. Therefore, the UE can obtain an appropriate backoff upper limit according to the number of failures of transmitting the communication information, thereby reducing the delay in transmitting the uplink data by the UE.
  • 4 is a schematic diagram of a second embodiment of a communication information sending apparatus according to the present invention. On the basis of the embodiment shown in FIG. 3, as shown in FIG. 4, the apparatus further includes: a resource receiving module 39 and a resource selecting module 32.
  • the resource receiving module 39 is configured to receive at least one contention resource sent by the base station for transmitting the communication information before the sending module 31 sends the communication information to the base station.
  • the resource selection module 32 is configured to select one of the at least one contention resources received by the resource receiving module 39 to send the communication information.
  • the upper limit obtaining module 33 may include: a first obtaining unit 331 and/or a second acquiring unit 333.
  • the second acquisition unit 333 is for When the value of the first backoff upper limit decreases as the number of transmission failures increases, the first time used to transmit the communication information and the delay requirement corresponding to the transmission communication information are acquired, and the first time and the delay request are obtained according to the first time and the delay requirement.
  • the first backoff limit decreases as the number of transmission failures increases.
  • the first selection module 35 may include: an upper limit receiving unit 351 and a first selection unit 353.
  • the upper limit receiving unit 351 is configured to receive the second back-off upper limit sent by the base station after the transmission of the communication information to the base station fails.
  • the first selection unit 353 is configured to use the minimum value of the first back-off upper limit and the second back-off upper limit as the back-off upper limit, and select the back-off time for resending the communication information according to the back-off upper limit.
  • the device further includes: a lower limit acquisition module 37.
  • the lower limit acquisition module 37 is configured to acquire a lower limit of the backoff of transmitting the communication information.
  • the first selection module 35 is specifically configured to: determine a backoff upper limit according to the first backoff upper limit acquired by the upper limit acquisition module 33, and select a backoff time for resending the communication information according to the backoff lower limit obtained by the backoff upper limit and lower limit acquisition module 37.
  • the lower limit obtaining module 37 may include: a lower limit receiving unit 371 and a first lower limit obtaining unit 373 Or a second lower limit acquisition unit 375.
  • the lower limit receiving unit 371 is configured to receive a lower bound of the backoff transmitted by the base station.
  • the first lower bound obtaining unit 373 is configured to acquire a lower bound of the backing according to the indication of the application layer.
  • the second lower bound obtaining unit 375 is configured to obtain a backoff lower limit according to the backoff upper limit and the backoff time window sent by the base station.
  • the resource receiving module 39 is further configured to: before the sending module 31 sends the communication information to the base station, receive at least one contention resource that is sent by the base station and used to send the communication information according to the resource identifier allocated by the base station.
  • Each terminal is allocated with at least one resource identifier by the base station, and each resource identifier corresponds to at least one contention resource.
  • the resource selection module 32 includes: a random selection unit 321 or a modulo selection unit 323.
  • the random selection unit 321 is configured to randomly select a contention resource to transmit communication information from at least one contention resource.
  • the modulo selection unit 323 is configured to modulate the value of the at least one contention resource to the value of the identification information of the current terminal to obtain a first remainder, and select a contention resource corresponding to the first remainder to send communication information.
  • the sending module 31 is further configured to send the communication resource by using the contention resource selected by the resource selection module 32.
  • the communication information transmitting apparatus provided in this embodiment may be included in the terminal described in each of the foregoing method embodiments.
  • the UE after transmitting the communication information to the base station, the UE obtains the first backoff upper limit according to the number of failed transmissions, and receives the second backoff upper limit sent by the base station, and the minimum of the first backoff upper limit and the second backoff upper limit.
  • the value is used as the back-off upper limit, and the back-off time for resending the communication information can be selected according to the back-off upper limit and the back-off lower limit. Therefore, the UE can obtain an appropriate backoff upper limit according to the number of failures of transmitting the communication information, thereby reducing the delay in transmitting the uplink data by the UE.
  • the base station further allocates at least one contention resource for each UE, and the UE selects a contention resource to use, thereby further reducing the conflict of the contention.
  • the embodiment of the present invention further provides a communication information transmission system, including a base station and a terminal, where the terminal includes any communication information sending apparatus provided by the embodiment of the present invention.
  • the base station includes: a resource allocation module and a resource sending module.
  • the resource allocation module is configured to allocate at least one resource identifier for each terminal corresponding to the base station.
  • the resource sending module is configured to send a contention resource including a resource identifier, where each resource identifier corresponds to at least one contention resource.

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Description

通信信息发送方法、 装置和系统
本申请要求于 2010 年 12 月 24 日提交中国专利局、 申请号为 201010614982.5、 发明名称为"通信信息发送方法、 装置和系统"的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明实施例涉及通信技术领域, 尤其涉及一种通信信息发送方法、装置 和系统。 背景技术
在同一个通信小区内, 可能存在多个终端同时向基站发送随机接入信号。 当多个终端都向基站发送随机接入信号时,这多个终端将同时使用同一竟争资 源, 从而会导致竟争沖突而使得多个终端的业务传输失败。
多个终端在竟争资源上的随机接入过程失败后,每个竟争失败的终端可以 从网络侧发送的消息中接收到下一次发起随机接入的最大退避上限。竟争失败 的终端在接收到最大退避上限后, 从 0到最大退避上限之间选择一个随机值作 为下次发起随机接入的退避时间。
在一次竟争失败后,针对本次竟争失败的所有终端, 其接收到的最大退避 上限是相同的。 然而, 对于部分竟争失败的终端, 其竟争失败可能不是网络负 载重导致的, 此时就无需等待较长的退避时间。 但是, 按照现有的机制, 每个 竟争失败的终端,都根据该最大退避上限随机选取退避时间, 由此每个终端都 可能会选择较长的退避时间, 从而导致终端发送上行数据的延迟。 发明内容
本发明实施例提供一种通信信息发送方法、装置和系统, 可以使终端选择 适当的退避时间, 减少终端发送上行数据的延迟。 本发明实施例提供一种通信信息发送方法, 包括:
向基站发送通信信息;
在向所述基站发送所述通信信息发送失败后,根据所述发送失败的次数获 取第一退避上限;
根据所述第一退避上限确定退避上限,并根据所述退避上限选择重新发送 所述通信信息的退避时间。
本发明实施例提供一种通信信息发送装置, 包括:
发送模块, 用于向基站发送通信信息;
上限获取模块,用于在所述发送模块向所述基站发送所述通信信息发送失 败后, 根据所述发送失败的次数获取第一退避上限;
第一选择模块,用于根据所述上限获取模块获取的所述第一退避上限确定 退避上限, 并根据所述退避上限选择重新发送所述通信信息的退避时间。
本发明实施例提供一种通信信息传输系统, 包括基站和终端, 所述终端包 括本发明实施例提供的任一通信信息发送装置。
本发明实施例的通信信息发送方法、装置和系统, 终端在向基站发送通信 信息发送失败后,根据发送失败的次数获取第一退避上限,根据该第一退避上 限确定退避上限, 并根据该退避上限选择重新发送通信信息的退避时间。 由此 终端可以根据发送通信信息的失败次数来获取适当的退避上限,从而可以减少 终端发送上行数据的延迟。 附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所 需要使用的附图作一筒单地介绍,显而易见地, 下面描述中的附图是本发明的 一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。 图 1为本发明通信信息发送方法实施例一的流程图;
图 2为本发明通信信息发送方法实施例二的流程图;
图 3为本发明通信信息发送装置实施例一的示意图;
图 4为本发明通信信息发送装置实施例二的示意图。 具体实施方式
下面将结合本发明实施例中的附图 ,对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
为使本发明实施例的目的、技术方案和优点更加清楚, 下面将结合本发明 实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。基于本发明中 的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其 他实施例, 都属于本发明保护的范围。
图 1为本发明通信信息发送方法实施例一的流程图,如图 1所示, 该方法 包括:
步骤 101、 向基站发送通信信息。
本实施例的执行主体是用户设备 ( User Equipment , 以下筒称为: UE ) 。 在通信过程中, UE可以向基站发送通信信息, 其中所述的通信信息可以为随 机接入信号、 调度请求资源信令或业务数据。
步骤 102、 在向基站发送通信信息发送失败后, 根据发送失败的次数获取 第一退避上限。
当 UE发送通信信息与其他 UE发生沖突而竟争失败时, UE可以通过以 下方式获知: UE通过自身检测或网络侧的指示可以获知发送通信信息竟争失 败; 例如: UE在一定时间内没有接收到确认消息, 或者 UE检测到其他 UE 或网络侧发送的沖突信号, 则可以认为发送该通信信息竟争失败; 又例如: UE接收到网络侧发送的竟争失败的反馈信息, 或者 UE没有接收到网络侧的 反馈信息, 则可以认为发送该通信信息竟争失败。
在 UE获知向基站发送通信信息竟争失败后, UE根据发送失败的次数获 取第一退避上限; 具体的, 对于一般的通信信息而言, 失败的次数越多, 第一 退避上限就越大; 而对于发送时间有限制的通信信息而言, 失败的次数越多, 第一退避上限就越小。
对于 UE而言, 如果是发送失败的次数较少, 则发送失败可能不是网络负 载重导致的, 由此, 对于发送失败次数较少的 UE, 可以选择较小的第一退避 上限, 从而可以减少 UE发送上行数据的延迟。
步骤 103、 根据第一退避上限确定退避上限, 并根据退避上限选择重新发 送通信信息的退避时间。
UE将获取到的第一退避上限作为选择退避时间的退避上限, 然后 UE从 0到该退避上限的范围内, 随机选择一退避时间来重新发送该通信信息。
本发明实施例, UE在向基站发送通信信息发送失败后, 根据发送失败的 次数获取第一退避上限,根据该第一退避上限确定退避上限, 并根据该退避上 限选择重新发送通信信息的退避时间。 由此 UE可以根据发送通信信息的失败 次数来获取适当的退避上限, 从而可以减少 UE发送上行数据的延迟。
图 2为本发明通信信息发送方法实施例二的流程图,如图 2所示, 该方法 包括:
步骤 200、 UE获取竟争资源配置信息。
UE可以通过专用消息和 /或系统广播消息获得小区的竟争资源配置信息。 其中, 专用信息可以为 RRC ( Radio Resource Control, 无线资源控制)信令。 该竟争资源配置信息至少包括下面所述信息中的一种: a、 当前小区是否允许竟争发送, 或当前小区是否存在竟争资源配置的指 示;
b、 竟争资源的位置信息; 例如: 竟争资源所使用的频域资源块、 频域基 准位置和偏移位置, 竟争资源对应时域的帧号(或子帧号)和时域周期, 以及 计算前述位置信息的相关信息;
c、 功率控制信息和针对不同竟争资源的不同的功率配置信息; 例如允许 的最大发射功率信息和功率退避信息等。
步骤 201、 基站为基站对应的每个 UE分配至少一个资源标识。
其中, 基站对应的每个 UE即为基站所服务的每个 UE。
当多个 UE在同一个竟争资源上发送通信信息时,可能会因为大量的竟争 沖突而导致传输失败, 为了减少竟争沖突, 便于 UE的选择, 本实施例可以进 一步包括基站为 UE分配多个竟争资源的步骤, 即步骤 201-步骤 205。
为了给一个 UE分配多个竟争资源,基站( eNodeB )可以预先为其服务的 每一个 UE分配一个或多个竟争资源的标识 ( Contention Based transmission Radio Network Temporary Identity, 筒称为: CB-RNTI ) , 然后基站在向某一 个 UE下发竟争资源时, 就可以在该竟争资源中携带为该 UE分配的标识。
具体的, 基站为 UE分配 CB-RNTI可以包括如下两种方式:
a、 基站将其服务的 UE分成多组, 每组至少包含一个 UE, 并且每个 UE 可能包含于不同的组, 然后基站为每组都分配一个 CB-RNTI, 由此相当于基 站为每个 UE分配 CB-RNTI; 当 UE1只属于一个组时, 相当于基站为该 UE1 分配了一个 CB-RNTI, 当 UE1属于多个组时, 相当于基站为该 UE1分配了多 个 CB-RNTL 基站为每组调度的竟争资源中包含为该组分配的 CB-RNTI, 该 竟争资源可以被每组中包含的所有 UE共同使用。
b、 基站为每个 UE分配一个或多个 CB-RNTI; 当基站为每个 UE分配一 个 CB-RNTI时, 一个 CB-RNTI可以对应多个竟争资源; 当基站为每个 UE分 配多个 CB-RNTI时, 一个 CB-RNTI可以对应一个竟争资源。
步骤 202、 基站发送包含资源标识的竟争资源; 其中每个资源标识对应至 少一个竟争资源。
其中, 本实施例中的竟争资源可以为用于发送随机接入信号、调度请求资 源信令或业务数据的竟争资源。
基站为 UE分配资源标识后, 基站发送包含资源标识的竟争资源, 从而将 竟争资源调度给各个 UE。 其中每个资源标识可以对应一个竟争资源, 也可以 对应多个竟争资源。
步骤 203、 UE根据基站为 UE分配的资源标识, 接收基站发送的用于发 送通信信息的至少一个竟争资源。
基站为每个 UE分配资源标识后, 基站发送包含资源标识的竟争资源, 每 个 UE根据基站发送的竟争资源中包含的资源标识,可以接收到分配给自身的 竟争资源。 例如: 基站为 UE1分配了资源标识 A和资源标识 B, 即所有包含 资源标识 A和资源标识 B的竟争资源都是基站分配给 UE1的, UE1可以接收 所有包含资源标识 A和资源标识 B的竟争资源。
当 UE有通信信息, 例如随机接入信号、 调度请求资源信令或业务数据, 需要发送的时候, UE可以在某一个时隙通过专用消息和 /或系统广播消息获得 该 UE对应的一个或多个竟争资源准确时域和 /或频域信息; 或者, UE也可以 通过物理层信令,在每个传输间隙中,通过对物理层调度信令的检测来获得该 UE对应的竟争资源, 该方式下, 每个竟争资源可以通过一个或多个物理层消 息传递给 UE, UE通过物理层消息中所携带的 CB-RNTI来识别是否是发送给 其的竟争资源。
步骤 204、 UE从至少一个竟争资源中, 选择一个竟争资源发送通信信息。 UE从多个竟争资源中选择一个的具体方式可以包括:
第一种方式: UE从多个竟争资源中, 随机选择一个竟争资源来发送通信 信息。
第二种方式: UE将多个竟争资源的数量对当前终端的标识信息的数值取 模得到第一余数, 选择与第一余数对应的一个竟争资源发送通信信息。 例如: 为 UE2分配了 4份竟争资源, 该 UE2的标识为 7或 11 , 则通过对 UE2的标 识取模后, 得到余数 3, 从而选择第 3份竟争资源来发送通信息。
步骤 205、 UE根据选择的竟争资源发送通信信息。
步骤 206、 UE在向基站发送通信信息发送失败后, 根据发送失败的次数 获取第一退避上限。
其中, UE根据发送失败的次数来获取第一退避上限时, 第一退避上限的 数值可以随着发送失败的次数的增大而增大,也可以随着发送失败的次数的增 大而减少。
当第一退避上限的数值随着发送失败的次数的增大而增大时,根据发送失 败的次数获取第一退避上限具体可以包括:
UE根据基站发送的信号获取退避参数,并根据公式 1获取第一退避上限; 公式 1为: Τ1=2(")*Τ2, 或者, Tl=(i-1)*T2;
其中, i表示发送失败的次数, T1表示第一退避上限, T2表示退避参数; 作为一具体的实施方式,该退避参数可以为发送通信信息所需的竟争资源的分 配间隔; 该分配间隔可以直接从基站获取,也可以根据基站在一段时间内发送 的竟争资源的数量计算得到该分配间隔。
当第一退避上限的数值随着发送失败的次数的增大而减小时,根据发送失 败的次数获取第一退避上限具体可以包括:
获取发送通信信息已用的第一时间和发送通信信息对应的时延要求;根据 第一时间和时延要求, 获取第一退避上限; 作为一具体的实施方式, 该第一退 避上限等于时延要求与第一时间的差值。例如: 某通信信息对于发送的时延要 求为 m秒,发送该通信信息已用的第一时间为 ml秒,该第一时间即为从第一 次发送该通信信息的时刻到获取该第一时间的时刻的时间,则该通信信息对应 的第一退避上限即为 m-ml ; 其中对于时延要求较高的业务例如可以为: 触发 过程的业务、 逻辑信道或承载的 QoS(Quality of Service, 服务质量), 或由于先 前请求的失败而导致将要不能满足 QoS要求的业务。
步骤 207、 UE在向基站发送通信信息发送失败后, 接收基站发送的第二 退避上限。
在向基站发送通信信息发送失败后, UE可以通过物理层信令、 系统广播 或专用消息接收基站发送的第二退避上限。
其中, 本实施例并不限定步骤 206和步骤 207的时序关系。
步骤 208、 UE将第一退避上限和第二退避上限中的最小值作为退避上限。
UE从第一退避上限和第二退避上限中选择一个最小值作为退避上限, 然 后 UE可以根据该退避上限随机选择一个退避时间来重新发送通信信息。
为了进一步避免竟争沖突, 本实施例还可以包括设置退避下限的步骤, 由 此可以将多个 UE的退避时间分隔开, 即本实施例还可以包括以下步骤:
步骤 209、 UE获取发送通信信息的退避下限。
UE获取退避下限的方式可以包括: ( 1 ) UE可以通过物理层信令、 广播、 或专用消息接收基站发送的退避下限; ( 2 ) UE可以根据应用层的指示获取退 避下限; (3 ) UE根据上述获取的退避上限与基站发送的退避时间窗, 获取退 避下限, 例如: 上述 UE获取的退避上限为 70ms, 基站发送的退避时间窗为 20ms, 由此可以获取退避下限为 70-20=50ms。
步骤 210、 UE根据退避上限和退避下限, 选择重新发送通信信息的退避 时间。
UE在获取的退避下限和退避上限之间, 随机选择一退避时间, 然后在经 过该退避时间后, 重新发送通信信息。
本发明实施例, UE在向基站发送通信信息发送失败后, 根据发送失败的 次数获取第一退避上限, 并接收基站发送的第二退避上限,将第一退避上限和 第二退避上限中的最小值作为退避上限,并可以根据该退避上限和退避下限选 择重新发送通信信息的退避时间。 由此 UE可以根据发送通信信息的失败次数 来获取适当的退避上限, 从而可以减少 UE发送上行数据的延迟。 并且, 基站 还为每个 UE分配至少一个竟争资源, 并由 UE选择一个竟争资源来使用, 由 此还进一步降低了竟争发送的沖突。
本领域普通技术人员可以理解:实现上述方法实施例的全部或部分步骤可 以通过程序指令相关的硬件来完成,前述的程序可以存储于一计算机可读取存 储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 前述的存储介 质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。
图 3为本发明通信信息发送装置实施例一的示意图,如图 3所示, 该装置 包括: 发送模块 31、 上限获取模块 33和第一选择模块 35。
发送模块 31用于向基站发送通信信息。
上限获取模块 33用于在发送模块 31向基站发送通信信息发送失败后,根 据发送失败的次数获取第一退避上限。
第一选择模块 35用于根据上限获取模块 33获取的第一退避上限确定退避 上限, 并根据退避上限选择重新发送通信信息的退避时间。
本实施例中各个模块的工作流程和工作原理参见上述各方法实施例中的 描述,在此不再赘述。本实施例提供的通信信息发送装置可以包含于上述各方 法实施例所述的终端中。
本发明实施例, 上限获取模块在发送模块向基站发送通信信息发送失败 后,根据发送失败的次数获取第一退避上限, 第一选择模块根据该第一退避上 限确定退避上限, 并根据该退避上限选择重新发送通信信息的退避时间。 由此 UE可以根据发送通信信息的失败次数来获取适当的退避上限, 从而可以减少 UE发送上行数据的延迟。 图 4为本发明通信信息发送装置实施例二的示意图,在图 3所示实施例的 基础上, 如图 4所示, 该装置还包括: 资源接收模块 39和资源选择模块 32。
资源接收模块 39用于在发送模块 31向基站发送通信信息之前,接收基站 发送的用于发送通信信息的至少一个竟争资源。
资源选择模块 32用于从资源接收模块 39接收的至少一个竟争资源中,选 择一个竟争资源发送通信信息。
进一步的, 上限获取模块 33可以包括: 第一获取单元 331和 /或第二获取 单元 333。
第一获取单元 331 用于在第一退避上限的数值随着发送失败的次数的增 大而增大时,根据基站发送的信号获取退避参数, 并根据公式 1获取第一退避 上限; 公式 1为: Τ1=2(")*Τ2, 或者, Tl=(i-1)*T2; 其中, i表示发送失败的 次数, T1表示第一退避上限, T2表示退避参数。 第二获取单元 333用于在第 一退避上限的数值随着发送失败的次数的增大而减小时,获取发送通信信息已 用的第一时间和发送通信信息对应的时延要求,根据第一时间和时延要求, 获 取第一退避上限。
第一选择模块 35可以包括: 上限接收单元 351和第一选择单元 353。 上限接收单元 351用于在向基站发送通信信息发送失败后,接收基站发送 的第二退避上限。第一选择单元 353用于将第一退避上限和第二退避上限中的 最小值作为退避上限, 并根据退避上限选择重新发送通信信息的退避时间。
进一步的, 该装置还包括: 下限获取模块 37。
下限获取模块 37用于获取发送通信信息的退避下限。
第一选择模块 35具体可以用于:根据上限获取模块 33获取的第一退避上 限确定退避上限, 并根据退避上限和下限获取模块 37获取的退避下限, 选择 重新发送通信信息的退避时间。
下限获取模块 37可以包括: 下限接收单元 371、 第一下限获取单元 373 或第二下限获取单元 375。
下限接收单元 371用于接收基站发送的退避下限。 第一下限获取单元 373 用于根据应用层的指示获取退避下限。第二下限获取单元 375用于根据退避上 限与基站发送的退避时间窗, 获取退避下限。
资源接收模块 39还具体用于: 在发送模块 31向基站发送通信信息之前, 根据基站为终端分配的资源标识,接收基站发送的用于发送通信信息的至少一 个竟争资源。 其中, 每一终端被基站分配有至少一个资源标识, 每个资源标识 对应至少一个竟争资源。
资源选择模块 32包括: 随机选择单元 321或者取模选择单元 323。
随机选择单元 321用于从至少一个竟争资源中,随机选择一个竟争资源发 送通信信息。取模选择单元 323用于将至少一个竟争资源的数量对当前终端的 标识信息的数值取模得到第一余数,并选择与第一余数对应的一个竟争资源发 送通信信息。
发送模块 31具体还用于采用资源选择模块 32选择的竟争资源发送通信资 源。
本实施例中各个模块和单元的工作流程和工作原理参见上述各方法实施 例中的描述,在此不再赘述。本实施例提供的通信信息发送装置可以包含于上 述各方法实施例所述的终端中。
本发明实施例, UE在向基站发送通信信息发送失败后, 根据发送失败的 次数获取第一退避上限, 并接收基站发送的第二退避上限,将第一退避上限和 第二退避上限中的最小值作为退避上限,并可以根据该退避上限和退避下限选 择重新发送通信信息的退避时间。 由此 UE可以根据发送通信信息的失败次数 来获取适当的退避上限, 从而可以减少 UE发送上行数据的延迟。 并且, 基站 还为每个 UE分配至少一个竟争资源, 并由 UE选择一个竟争资源来使用, 由 此还进一步降低了竟争发送的沖突。 本发明实施例还提供一种通信信息传输系统, 包括基站和终端; 其中该终 端包括本发明实施例提供的任一通信信息发送装置。
进一步的, 该基站包括: 资源分配模块和资源发送模块。
资源分配模块用于为基站对应的每个终端分配至少一个资源标识。
资源发送模块用于发送包含资源标识的竟争资源;其中每个资源标识对应 至少一个竟争资源。
本发明实施例, 具有前述各实施例的有益效果。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其限 制; 尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员 应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其 中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术方案的 本质脱离本发明各实施例技术方案的精神和范围。

Claims

权 利 要 求
1、 一种通信信息发送方法, 其特征在于, 包括:
向基站发送通信信息;
在向所述基站发送所述通信信息发送失败后,根据所述发送失败的次数获 取第一退避上限;
根据所述第一退避上限确定退避上限,并根据所述退避上限选择重新发送 所述通信信息的退避时间。
2、 根据权利要求 1所述的通信信息发送方法, 其特征在于, 所述根据所 述第一退避上限确定退避上限包括:
在向所述基站发送所述通信信息发送失败后,接收所述基站发送的第二退 避上限;
将所述第一退避上限和所述第二退避上限中的最小值作为所述退避上限。
3、 根据权利要求 1所述的通信信息发送方法, 其特征在于, 所述通信信 息包括: 随机接入信号、 调度请求资源信令或业务数据。
4、 根据权利要求 1-3任一所述的通信信息发送方法, 其特征在于: 所述第一退避上限的数值随着所述发送失败的次数的增大而增大; 或者 所述第一退避上限的数值随着所述发送失败的次数的增大而减少。
5、 根据权利要求 4所述的通信信息发送方法, 其特征在于, 当所述第一 退避上限的数值随着所述发送失败的次数的增大而增大时,所述根据所述发送 失败的次数获取第一退避上限包括:
根据基站发送的信号获取退避参数, 并根据公式 1 获取所述第一退避上 限;
公式 1为: Τ1=2(")*Τ2, 或者, Tl=(i-1)*T2; 其中, i表示所述发送失败 的次数, T1表示所述第一退避上限, T2表示所述退避参数。
6、 根据权利要求 5所述的通信信息发送方法, 其特征在于, 所述退避参 数为发送所述通信信息所需的竟争资源的分配间隔。
7、 根据权利要求 4所述的通信信息发送方法, 其特征在于, 当所述第一 退避上限的数值随着所述发送失败的次数的增大而减小时,所述根据所述发送 失败的次数获取第一退避上限包括:
获取发送所述通信信息已用的第一时间和发送所述通信信息对应的时延 要求;
根据所述第一时间和所述时延要求, 获取所述第一退避上限。
8、 根据权利要求 7的通信信息发送方法, 其特征在于: 所述第一退避上 限等于所述时延要求与所述第一时间的差值。
9、 根据权利要求 1-3任一所述的通信信息发送方法, 其特征在于, 还包 括: 获取发送所述通信信息的退避下限;
所述根据所述退避上限选择重新发送所述通信信息的退避时间包括: 根据所述退避上限和所述退避下限,选择重新发送所述通信信息的退避时 间。
10、 根据权利要求 9所述的通信信息发送方法, 其特征在于, 所述获取发 送所述通信信息的退避下限包括:
接收基站发送的所述退避下限; 或者
根据应用层的指示获取所述退避下限; 或者
根据所述退避上限与基站发送的退避时间窗, 获取所述退避下限。
11、 根据权利要求 1-3任一所述的通信信息发送方法, 其特征在于, 所述 向基站发送通信信息之前还包括:
接收基站发送的用于发送所述通信信息的至少一个竟争资源;
从所述至少一个竟争资源中, 选择一个所述竟争资源发送所述通信信息。
12、 根据权利要求 11所述的通信信息发送方法, 其特征在于, 所述接收 基站发送的用于发送所述通信信息的至少一个竟争资源包括: 根据所述基站为终端分配的资源标识,接收所述基站发送的用于发送所述 通信信息的至少一个竟争资源; 其中,每一终端被所述基站分配有至少一个资 源标识, 每个资源标识对应至少一个竟争资源。
13、 根据权利要求 11所述的通信信息发送方法, 其特征在于, 所述从所 述至少一个竟争资源中, 选择一个所述竟争资源发送所述通信信息包括: 从所述至少一个竟争资源中,随机选择一个所述竟争资源发送所述通信信 息; 或者
将所述至少一个竟争资源的数量对当前终端的标识信息的数值取模得到 第一余数, 选择与所述第一余数对应的一个所述竟争资源发送所述通信信息。
14、 一种通信信息发送装置, 其特征在于, 包括:
发送模块, 用于向基站发送通信信息;
上限获取模块,用于在所述发送模块向所述基站发送所述通信信息发送失 败后, 根据所述发送失败的次数获取第一退避上限;
第一选择模块,用于根据所述上限获取模块获取的所述第一退避上限确定 退避上限, 并根据所述退避上限选择重新发送所述通信信息的退避时间。
15、 根据权利要求 14所述的通信信息发送装置, 其特征在于, 所述第一 选择模块包括:
上限接收单元, 用于在向所述基站发送所述通信信息发送失败后,接收所 述基站发送的第二退避上限;
第一选择单元,用于将所述第一退避上限和所述第二退避上限中的最小值 作为所述退避上限,并根据所述退避上限选择重新发送所述通信信息的所述退 避时间。
16、 根据权利要求 14或 15所述的通信信息发送装置, 其特征在于, 所述 上限获取模块包括:
第一获取单元,用于在所述第一退避上限的数值随着所述发送失败的次数 的增大而增大时,根据基站发送的信号获取退避参数, 并根据公式 1获取所述 第一退避上限; 公式 1为: Τ1=2(")*Τ2, 或者, Tl=(i-1)*T2; 其中, i表示所 述发送失败的次数, T1 表示所述第一退避上限, T2表示所述退避参数; 和 / 或
第二获取单元,用于在所述第一退避上限的数值随着所述发送失败的次数 的增大而减小时,获取发送所述通信信息已用的第一时间和发送所述通信信息 对应的时延要求,根据所述第一时间和所述时延要求,获取所述第一退避上限。
17、 根据权利要求 14或 15所述的通信信息发送装置, 其特征在于, 还包 括: 下限获取模块, 用于获取发送所述通信信息的退避下限;
所述第一选择模块具体用于:根据所述上限获取模块获取的所述第一退避 上限确定退避上限,并根据所述退避上限和所述下限获取模块获取的所述退避 下限, 选择重新发送所述通信信息的退避时间。
18、 根据权利要求 17所述的通信信息发送装置, 其特征在于, 所述下限 获取模块包括:
下限接收单元, 用于接收基站发送的所述退避下限; 第一下限获取单元, 用于根据应用层的指示获取所述退避下限; 或者
第二下限获取单元, 用于根据所述退避上限与基站发送的退避时间窗, 获 取所述退避下限。
19、 根据权利要求 14或 15所述的通信信息发送装置, 其特征在于, 还包 括:
资源接收模块, 用于在所述发送模块向基站发送通信信息之前,接收基站 发送的用于发送所述通信信息的至少一个竟争资源;
资源选择模块, 用于从所述至少一个竟争资源中,选择一个发送所述通信 信息的所述竟争资源;
所述发送模块,具体用于采用所述资源选择模块选择的竟争资源发送所述 通信资源。
20、 根据权利要求 19所述的通信信息发送装置, 其特征在于, 所述资源 接收模块具体用于: 在所述发送模块向基站发送通信信息之前,根据所述基站 为终端分配的资源标识,接收所述基站发送的用于发送所述通信信息的至少一 个竟争资源; 其中, 每一终端被所述基站分配有至少一个资源标识, 每个资源 标识对应至少一个竟争资源。
21、 根据权利要求 19所述的通信信息发送装置, 其特征在于, 所述资源 选择模块包括:
随机选择单元, 用于从所述至少一个竟争资源中, 随机选择一个所述竟争 资源发送所述通信信息; 或者
耳 ^莫选择单元,用于将所述至少一个竟争资源的数量对当前终端的标识信 息的数值取模得到第一余数,并选择与所述第一余数对应的一个所述竟争资源 发送所述通信信息。
22、 一种通信信息传输系统, 包括基站和终端, 所述终端包括如权利要求 14-21任一所述的通信信息发送装置。
23、 根据权利要求 22所述的通信信息传输系统, 其特征在于, 所述基站 包括:
资源分配模块, 用于为所述基站对应的每个终端分配至少一个资源标识; 资源发送模块, 用于发送包含所述资源标识的竟争资源; 其中每个资源标 识对应至少一个竟争资源。
PCT/CN2011/084619 2010-12-24 2011-12-26 通信信息发送方法、装置和系统 WO2012083889A1 (zh)

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