WO2008025289A1 - Procédé, dispositif et terminal mobile pour transmettre une sonde d'accès aléatoire - Google Patents

Procédé, dispositif et terminal mobile pour transmettre une sonde d'accès aléatoire Download PDF

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Publication number
WO2008025289A1
WO2008025289A1 PCT/CN2007/070527 CN2007070527W WO2008025289A1 WO 2008025289 A1 WO2008025289 A1 WO 2008025289A1 CN 2007070527 W CN2007070527 W CN 2007070527W WO 2008025289 A1 WO2008025289 A1 WO 2008025289A1
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Prior art keywords
random access
access probe
priority
probe
transmitting
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PCT/CN2007/070527
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English (en)
French (fr)
Inventor
Wei Ruan
Yinggang Du
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008025289A1 publication Critical patent/WO2008025289A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0866Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H04W74/0875Non-scheduled access, e.g. ALOHA using a dedicated channel for access with assigned priorities based access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0866Non-scheduled access, e.g. ALOHA using a dedicated channel for access

Definitions

  • Random access probe transmitting method, device and mobile terminal The present application claims to be submitted to the Chinese Patent Office on August 31, 2006, the application number is 200610112348.5, and the invention name is "random access probe transmitting method and device," Chinese patent Priority of the application, the entire contents of which are incorporated herein by reference.
  • the present invention relates to the field of communications, and more particularly, to a random access probe transmitting method, apparatus, and mobile terminal, which can be applied to a wireless cellular communication system.
  • the system contains a certain number of base stations, each of which needs to communicate with a certain number of users simultaneously.
  • User terminals are randomly dispersed throughout the coverage of the base station of the communication system. After the mobile terminal captures the mobile network, it is usually in standby. When the user terminal needs to communicate with the base station, a random access procedure needs to be initiated. Therefore, random access technology plays an important role in various wireless communication multiple access systems.
  • the random access channel usually consists of a probe (or prefix) and a message.
  • the function of the probe is to achieve uplink synchronization, carrying random IDs and other information.
  • the message part usually carries connection request information and the like.
  • the random access procedure is performed as follows.
  • the mobile terminal randomly selects a probe as a random access probe in the random access candidate probe sequence, and sends the probe to the base station.
  • the base station captures the random access probe, it sends an acknowledgement message to the terminal on the forward channel.
  • the terminal sends a connection establishment request to the base station.
  • the base station allocates a reverse link channel resource to the terminal, and notifies the mobile terminal through the downlink channel.
  • the transmission mechanism and method of the random access probe have an important influence on whether the base station can quickly acquire the random access probe.
  • the timeliness of random access is different. For example, real-time services require higher timeliness for random access than data services, and real-time services require higher timeliness for random access during cell edge handover.
  • the random access procedure of the related art does not optimize the transmission process of the random access sequence for different environmental characteristics, and thus the performance is low.
  • the method for transmitting the random access probe is as follows: As shown in FIG. 1, when the mobile terminal sends the random access probe, the probe 1 is sent at a lower power first. After a fixed period of time, increase the power transmission probe 2 until the maximum number of shots Np is reached.
  • the initial power of the transmission is determined by:
  • dBm is the power unit; the average received power is the power at which the terminal detects the downlink signal of the base station; the open loop adjustment is the difference between the initial access power and the average received power.
  • the value of the open loop adjustment is broadcast by the base station to the mobile terminal. All mobile terminals use the same open loop adjustment when initiating access. The increased value is given in increments of the step parameter each time the power is sent to the probe.
  • the value of the incremental step is broadcast by the base station to the mobile terminal, and all mobile terminals use the same incremental step when initiating access.
  • the Access Cycle Duration of the probe is also broadcast by the base station to the mobile terminal, and all mobile terminals use the same interval size when initiating access.
  • the random access probes are sent in the same manner, and the priority of the random access initiated in different environments cannot be reflected.
  • the random access procedure with low priority and the random access procedure with high priority compete for channel resources equally, so that the random access procedure with low priority has a random access procedure with high priority. Large interference is formed, which reduces the efficiency of random access.
  • the present invention provides a random access probe transmitting method and apparatus, and a mobile terminal, which can be applied to a wireless communication system.
  • a random access probe transmitting method is provided.
  • the random access probe transmitting method includes the following steps: a first step of dividing a random access probe into different priorities according to a specific factor; and a second step, the mobile terminal determining a current state for initiating random access The priority of the random access probe; and the third step, the mobile terminal sets a relevant parameter for transmitting the current random access probe according to the priority of the current random access probe.
  • a random access probe transmitting apparatus is provided.
  • the random access probe transmitting apparatus includes: a priority dividing module, which divides the random access probe into different priorities according to a specific factor; and a priority determining module that determines a current random connection for initiating random access Priority of the probe; and related parameter setting module, according to the current random connection
  • the priority of the probe is set to set the relevant parameters for transmitting the current random access probe.
  • a mobile terminal including a random access probe transmitting apparatus, where the apparatus includes:
  • a prioritization module configured to divide random access probes into different priorities according to specific factors
  • a priority determining module configured to determine a priority of a current random access probe that initiates random access
  • a related parameter setting module configured to set, according to a priority of the current random access probe, a related parameter for sending the current random access probe.
  • the present invention achieves the following beneficial effects:
  • the access efficiency when multiple users are randomly accessed is improved, and the service quality of different services in different communication environments is guaranteed.
  • FIG. 1 is a schematic diagram of a random access probe transmission process according to the related art
  • FIG. 2 is a flowchart of a method for transmitting a random access probe according to a first embodiment of the present invention
  • FIG. 3 is a schematic diagram of a priority example of a random access probe according to a first embodiment of the present invention.
  • a schematic diagram of another priority example of the random access probe of the first embodiment of the invention
  • Figure 5 is a block diagram of a random access probe transmitting apparatus in accordance with a second embodiment of the present invention.
  • a random access probe transmission method is provided.
  • the random access probe transmitting method according to the first embodiment will be described below with reference to the accompanying drawings, wherein Fig. 2 is a flowchart of a random access probe transmitting method according to the first embodiment of the present invention.
  • a random access probe transmitting method includes the following steps.
  • S206 the mobile terminal is randomly according to the current The priority of the access probe is set to set the relevant parameters for transmitting the current random access probe.
  • specific factors include urgency, and / or quality of service.
  • the priority of the emergency call, the connection in the connected state, the real-time service access attempting multiple times, the real-time service, and the random access probe for the data service are sequentially decreased.
  • the priority can be adjusted according to the load of the base station.
  • the priority of the random access probe can be lowered.
  • the priority of the random access probe can be prioritized. Raise.
  • the mobile terminal determines the priority of the random access probe according to the specific environment in which the random access is initiated.
  • the relevant parameters set in S206 include the transmission initial power, the transmission power increment step, and the transmission interval.
  • the initial power of transmission average received power + open loop adjustment, wherein the size of the initial transmission power is changed by changing the size of the open loop adjustment.
  • the relevant parameters set in S206 may be partially or completely different, and at least one difference.
  • the initial power of the random access probe of the A priority is greater than or equal to the initial transmission power of the random access probe of the B priority; the incremental step of the random access probe of the A priority is greater than or equal to the B priority.
  • the incremental step size of the random access probe of the level; the transmission interval of the random access probe of the A priority is less than or equal to the transmission interval of the random access probe of the B priority; wherein, the priority of the A is higher than the priority of the B
  • the priority is one level higher.
  • the power to send the random access probe is incremented until the maximum transmit power allowed by the system is reached.
  • the priority example 1 according to the first embodiment of the present invention will be described below with reference to FIG.
  • the first priority is a random access probe sent by a terminal of the real-time service when initiating a cell handover.
  • the second priority is a random access probe that is sent when the real-time service uplink is initialized.
  • Other random access probes are classified as the third priority.
  • the incremental steps of different priority random access probes are different.
  • the incremental step size of the second priority probe sequence is larger than the third priority incremental step size, so the maximum transmit power in the third priority is reached as long as Np-1 times.
  • the initial transmission power of the first priority is greater than the initial transmission power of the second priority, and the number of transmissions is Np-2. It can be seen that under the same channel condition, the first priority random access probe can be captured faster, so that the real-time requirement of the service can be better met.
  • the service is divided into three priorities, and the grouping method is the same as that of instance 1, but the parameters of the three priority probes are different from those of instance 1.
  • the first and second priorities have a shorter transmission interval than the third priority, which can reduce the interference of users with lower priority to users with higher priority.
  • the first priority has a larger initial transmission power and an incremental step size than the second priority, which makes the first priority easier to access than the second priority.
  • the method for transmitting an efficient random access probe applied to a wireless cellular communication system includes the following processes: First, random access probes transmitted in various environments are based on urgency or quality of service. (Qos, Quality of service) is prioritized; then, the mobile terminal determines the priority of the current random access probe according to the specific environment in which the random access is initiated; then, the mobile terminal determines the random access probe according to the current priority. Transmission method: For random access probes with different priorities, all or part of the transmission parameters (send initial power, incremental step size, transmission interval, etc.) are different when transmitting.
  • Qos, Quality of service Quality of service
  • the incremental step size is greater than or equal to the lower priority level, and the transmission interval is less than or equal to the lower priority level. At least one of the above parameters is not equal.
  • the power of the transmit probe is incremented each time until the maximum transmit power allowed by the system is reached.
  • a random access probe transmitting apparatus is provided.
  • a random access probe transmitting apparatus according to a second embodiment will now be described with reference to the accompanying drawings, wherein Fig. 5 is a block diagram of a random access probe transmitting apparatus according to a second embodiment of the present invention.
  • the random access probe transmitting apparatus 500 includes: a priority dividing module 502, which divides random access probes into different priorities according to specific factors; Block 504, determining a priority of a current random access probe used to initiate random access; and a related parameter setting module 506, configured to send a relevant parameter of the current random access probe according to a priority of the current random access probe.
  • the priority division module 502, the priority determination module 504, and the related parameter setting module 506 can mutually communicate with each other.
  • the specific factors by which the prioritization module 502 is based include urgency, and/or quality of service.
  • the priority of the emergency call, the multiple-time real-time service access, the link state switching, the real-time service, and the random access probe of the data service are sequentially decreased.
  • the priority can be adjusted according to the load of the base station.
  • the priority of the random access probe can be lowered.
  • the priority of the random access probe can be prioritized. Raise.
  • the priority determining module 504 determines the priority of the random access probe according to the specific environment in which the random access is initiated.
  • Related parameters set by the related parameter setting module 506 include the initial transmission power, the transmission power increment step, and the transmission interval.
  • the initial power of transmission average received power + open loop adjustment, wherein the size of the initial transmission power is changed by changing the size of the open loop adjustment.
  • the relevant parameters set by the associated parameter setting module 506 may be partially or completely different, and at least one different.
  • the initial power of the random access probe of the A priority is greater than or equal to the initial transmission power of the random access probe of the B priority; the incremental step of the random access probe of the A priority is greater than or equal to the B priority.
  • the priority of the level is one level higher.
  • the power to transmit the random access probe is incremented until the maximum transmit power allowed by the system is reached.
  • the present invention improves the access efficiency of multi-user random access, thereby ensuring the Qos of different services in different communication environments.

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

Description

随机接入探针发送方法、 装置及移动终端 本申请要求于 2006 年 8 月 31 日提交中国专利局、 申请号为 200610112348.5、 发明名称为"随机接入探针发送方法及装置,,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
本发明涉及通信领域, 并且更特别地, 涉及一种随机接入探针发送方法、 装置及移动终端, 其可以应用于无线蜂窝通信系统。
背景技术
当前的无线移动通信系统都需要支持一定数量的用户终端。系统包含一定 数量的基站, 每个基站需要和一定数量的用户同时通信。
用户终端随机分散在整个通信系统的基站覆盖范围内。移动终端捕获移动 网络后, 通常处于待机状态。 当用户终端需要和基站进行通信时, 需要发起随 机接入过程。因此,随机接入技术在各种无线通信多址接入系统占重要的地位。
随机接入信道通常由探针(或前缀)和消息两部分组成。 探针的功能是实 现上行同步,携带随机 ID及其他信息等。 消息部分通常携带连接请求信息等。
通常情况下, 随机接入过程按如下方法进行。移动终端在需要建立上行链 路时,在随机接入候选探针序列里随机选择某一探针作为随机接入探针,发送 给基站。 基站捕获随机接入探针后, 在前向信道给终端发送确认消息。 终端收 到确认消息后, 向基站发送连接建立请求。 基站收到连接建立请求后, 给终端 分配反向链路信道资源, 并通过下行信道通知移动终端。
在随机接入过程中,随机接入探针的发送机制和方法对于基站是否能快速 捕获随机接入探针有重要影响。 而不同环境下, 系统对随机接入的及时性不一 样。 例如, 实时的业务对随机接入的及时性要求比数据业务的高, 实时业务在 小区边缘的切换过程中对随机接入的及时性要求更高等。
通过上述描述可以看出,相关技术的随机接入过程没有针对不同环境特点 优化随机接入序列的发送过程, 因此性能较低。
例如, 在无线通信标准 802.20中, 随机接入探针的发送方法如下: 如图 1所示,移动终端发送随机接入探针时,先以较低的功率发送探针 1 , 以后间隔一段固定时间, 增大功率发送探针 2, 直到达到最大发射数量 Np为 止。
其中, 发射的初始功率由下式决定:
初始接入功率 = -平均接收功率 (dBm) +开环调节
其中, dBm是功率单位; 平均接收功率是终端检测到基站下行信号的功 率; 开环调节是初始接入功率相对于平均接收功率的差值。 在该协议中, 开环 调节的数值由基站广播给移动终端。所有移动终端发起接入时釆用相同的开环 调节。 每次增大功率发送探针时, 增大的数值以递增步长参数给出。 在该协议 中, 递增步长的数值有基站广播给移动终端, 所有移动终端发起接入时釆用相 同的递增步长。 此外, 在该协议中, 探针发送的间隔参数 (Access Cycle Duration )也由基站广播给移动终端, 所有移动终端发起接入时釆用相同的间 隔大小。
这样, 对于该小区中所有的终端, 随机接入探针釆用相同的方法发送, 导 致不同环境下发起的随机接入的优先级不能得到体现。这样一来,优先级低的 随机接入过程和优先级高的随机接入过程相互之间同等地竟争信道资源,从而 使优先级低的随机接入过程对优先级高的随机接入过程形成较大的干扰,降低 了随机接入的效率。
发明内容
本发明提供一种随机接入探针发送方法、装置及移动终端, 其可以应用于 无线通信系统。
根据本发明的一个方面, 提供一种随机接入探针发送方法。
根据本发明的随机接入探针发送方法包括以下步骤: 第一步骤,根据特定 因素将随机接入探针划分为不同的优先级; 第二步骤,移动终端确定用于发起 随机接入的当前随机接入探针的优先级; 以及第三步骤,移动终端根据当前随 机接入探针的优先级来设置发送当前随机接入探针的相关参数。
根据本发明的另一方面, 提供一种随机接入探针发送装置。
根据本发明的随机接入探针发送装置包括: 优先级划分模块,根据特定因 素将随机接入探针划分为不同的优先级; 优先级确定模块, 确定用于发起随机 接入的当前随机接入探针的优先级; 以及相关参数设置模块,根据当前随机接 入探针的优先级来设置发送当前随机接入探针的相关参数。
根据本发明的另一方面,提供一种移动终端,包括随机接入探针发送装置, 所述装置包括:
优先级划分模块, 用于根据特定因素将随机接入探针划分为不同的优先 级;
优先级确定模块, 用于确定发起随机接入的当前随机接入探针的优先级; 以及
相关参数设置模块,用于根据所述当前随机接入探针的优先级来设置发送 所述当前随机接入探针的相关参数。
通过以上技术方案, 本发明实现了以下有益效果: 提高了多个用户随机接 入时的接入效率, 保证了不同通信环境下不同业务的服务质量。
附图说明
此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示例性实施例及其说明用于解释本发明, 并不构成对本发明的不 当限定。 在附图中:
图 1是根据相关现有技术的随机接入探针发送过程的示意图;
图 2是根据本发明第一实施例的随机接入探针发送方法的流程图; 图 3是根据本发明第一实施例的随机接入探针的优先级实例的示意图; 图 4 是根据本发明第一实施例的随机接入探针的另一优先级实例的示意 图; 以及
图 5是根据本发明第二实施例的随机接入探针发送装置的框图。
具体实施方式
以下将参照附图来具体描述本发明的优选实施例, 其中, 附图构成本申请 的一部分, 并与本发明的实施例一起用于阐释本发明的原理。
第一实施例
在根据本发明的第一实施例中,提供了一种随机接入探针发送方法。 以下 将参照附图来说明根据第一实施例的随机接入探针发送方法, 其中, 图 2是根 据本发明第一实施例的随机接入探针发送方法的流程图。
参考图 2 , 根据本发明第一实施例的随机接入探针发送方法包括以下步 骤: S202, 根据特定因素将随机接入探针划分为不同的优先级; S204, 移动终 端确定用于发起随机接入的当前随机接入探针的优先级; 以及 S206, 移动终 端根据当前随机接入探针的优先级来设置发送当前随机接入探针的相关参数。
其中, 特定因素包括紧急程度、 和 /或服务质量。 紧急程度越高, 随机接 入探针的优先级越高; 和 /或服务质量越高, 随机接入探针的优先级越高。 举 例来说, 紧急电话、 处于连接状态的切换、 尝试多次的实时业务接入、 实时业 务、 以及数据业务的随机接入探针的优先级依次递减。
特别地, 可以根据基站负载来调整优先级, 在基站负载重的情况下, 可以 将随机接入探针的优先级降低, 在基站负载轻的情况下, 可以将随机接入探针 的优先级升高。
其中, 在 S204中, 移动终端根据发起随机接入的具体环境来确定随机接 入探针的优先级。
另外,在 S206中设置的相关参数包括发送初始功率、发送功率递增步长、 发送间隔。 其中, 发送初始功率 =平均接收功率 +开环调节, 其中, 通过改变 开环调节的大小来改变发送初始功率的大小。
特别地, 对于优先级不同的随机接入探针, 在 S206中设置的相关参数可 以部分地或全部不同, 并且至少有一个不同。
其中, A优先级的随机接入探针的发送初始功率大于或等于 B优先级的 随机接入探针的发送初始功率; A优先级的随机接入探针的递增步长大于或等 于 B优先级的随机接入探针的递增步长; A优先级的随机接入探针的发送间 隔小于或等于 B优先级的随机接入探针的发送间隔; 其中, A优先级比 B优 先级的优先级高一级。发送随机接入探针的功率递增, 直到达到系统允许的最 大发射功率。
实例 1
下面参考图 3来说明根据本发明第一实施例的优先级实例 1。如图 3所示, 根据发起接入时的环境将随机接入探针的优先级分为三个等级。第一优先级是 实时业务的终端在发起小区切换时发送的随机接入探针。第二优先级是实时业 务上行链路初始化时发送的随机接入探针。其他的随机接入探针归为第三优先 级。 在图 3所示的实例中, 不同优先级的随机接入探针的递增步长不同。如图 3所示, 第二优先级的探针序列的递增步长比第三优先级的递增步长要大, 所 以只要 Np-1次就达到了第三优先级中的最大发射功率。 第一优先级的初始发 射功率大于第二优先级的初始发射功率, 发射的次数为 Np-2。 由此可以看出, 相同信道条件下, 第一优先级的随机接入探针能够更快地 站捕获到, 因此 能够更好地满足业务的实时性需要。
实例 2
下面参考图 4来说明根据本发明第一实施例的优先级实例 2。
如图 4 所示, 在本实例中, 将业务分为三个优先级, 分组方法和实例 1 相同, 但是三种优先级的探针发送时的参数和实例 1的不同。 如图 4所示, 第 一和第二优先级具有比第三优先级较短的发送间隔,这样可以减少优先级低的 用户对优先级高的用户的干扰。第一优先级比第二优先级有较大的发射初始功 率和递增步长, 可以使第一优先级的比第二优先级的更容易接入。
从以上具体实施方式可知,本发明提供的应用于无线蜂窝通信系统的高效 随机接入探针发送方法包括以下处理: 首先,将各种环境下发送的随机接入探 针根据紧急程度或服务质量(Qos, Quality of service ) 区分优先级; 然后, 移 动终端根据发起随机接入的具体环境确定当前随机接入探针的优先级; 然后, 移动终端根据当前的优先级确定随机接入探针的发送方式:对于优先级不同的 随机接入探针, 发送时全部或部分发送参数(发送初始功率, 递增步长, 发送 间隔等)设置不一样。优先级高一级的发送初始功率大于或等于优先级低一级 的, 递增步长大于或等于优先级低一级的,发送间隔小于或等于优先级低一级 的。 以上参数至少有一个不相等。 发送探针的功率每次递增, 直到达到系统允 许的最大发射功率为止。
第二实施例
在根据本发明的第二实施例中,提供了一种随机接入探针发送装置。 以下 将参照附图来说明根据第二实施例的随机接入探针发送装置, 其中, 图 5是根 据本发明第二实施例的随机接入探针发送装置的框图。
如图 5所示,根据本发明的随机接入探针发送装置 500包括: 优先级划分 模块 502, 根据特定因素将随机接入探针划分为不同的优先级; 优先级确定模 块 504, 确定用于发起随机接入的当前随机接入探针的优先级; 以及相关参数 设置模块 506 , 根据当前随机接入探针的优先级来设置发送当前随机接入探针 的相关参数; 其中, 优先级划分模块 502、 优先级确定模块 504、 以及相关参 数设置模块 506之间可以彼此信令交互。
其中, 优先级划分模块 502所根据的特定因素包括紧急程度、 和 /或服务 质量。 紧急程度越高, 随机接入探针的优先级越高; 和 /或服务质量越高, 随 机接入探针的优先级越高。 举例来说, 紧急电话、 尝试多次的实时业务接入、 处于链接状态的切换、 实时业务、 以及数据业务的随机接入探针的优先级依次 递减。
特别地, 可以根据基站负载来调整优先级, 在基站负载重的情况下, 可以 将随机接入探针的优先级降低, 在基站负载轻的情况下, 可以将随机接入探针 的优先级升高。
其中,优先级确定模块 504根据发起随机接入的具体环境来确定随机接入 探针的优先级。
相关参数设置模块 506设置的相关参数包括发送初始功率、发送功率递增 步长、 发送间隔。 其中, 发送初始功率 =平均接收功率 +开环调节, 其中, 通 过改变开环调节的大小来改变发送初始功率的大小。对于优先级不同的随机接 入探针,相关参数设置模块 506设置的相关参数可以部分地或全部不同, 并且 至少有一个不同。
其中, A优先级的随机接入探针的发送初始功率大于或等于 B优先级的 随机接入探针的发送初始功率; A优先级的随机接入探针的递增步长大于或等 于 B优先级的随机接入探针的递增步长; A优先级的随机接入探针的发送间 隔小于或等于所述 B优先级的随机接入探针的发送间隔; 其中, A优先级比 B 优先级的优先级高一级。
特别地,发送随机接入探针的功率递增, 直到达到系统允许的最大发射功 率。
由上述技术方案可以看出, 本发明提高了多用户随机接入时的接入效率, 从而保证了不同通信环境下的不同业务的 Qos。
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, 均应包括在本发明的保护范围之 内。

Claims

权 利 要 求
1.一种随机接入探针发送方法, 其特征在于, 包括:
根据特定因素将随机接入探针划分为不同的优先级;
确定用于发起随机接入的当前随机接入探针的优先级; 以及
根据所述当前随机接入探针的优先级来设置发送所述当前随机接入探针 的相关参数。
2.根据权利要求 1所述的随机接入探针发送方法, 其特征在于, 所述特定 因素包括紧急程度、 和 /或服务质量。
3.根据权利要求 2所述的随机接入探针发送方法, 其特征在于,按照以下 方式之一或组合将随机接入探针划分为不同的优先级:
按照所述紧急程度由高至低,将所述随机接入探针划分为由高至低的优先 级;
按照所述服务质量由高至低,将所述随机接入探针划分为由高至低的优先 级。
4.根据权利要求 1所述的随机接入探针发送方法, 其特征在于, 所述根据 特定因素将随机接入探针划分为不同的优先级之后还包括:
根据基站负载来调整所述优先级,在基站负载重的情况下,将随机接入探 针的优先级降低, 在基站负载轻的情况下, 将随机接入探针的优先级升高。
5.根据权利要求 1所述的随机接入探针发送方法, 其特征在于, 所述确定 用于发起随机接入的当前随机接入探针的优先级具体包括:根据发起随机接入 的具体环境来确定所述当前随机接入探针的优先级。
6.根据权利要求 1所述的随机接入探针发送方法, 其特征在于, 所述相关 参数包括: 发送初始功率、 发送功率递增步长、 发送间隔。
7.根据权利要求 6所述的随机接入探针发送方法, 其特征在于, 所述发送 初始功率按照如下方式得到:发送初始功率 =平均接收功率 +开环调节,其中, 所述发送初始功率的大小通过改变所述开环调节的大小来改变。
8.根据权利要求 6所述的随机接入探针发送方法, 其特征在于,对于优先 级不同的随机接入探针, 所述相关参数至少有一个不同。
9.根据权利要求 8所述的随机接入探针发送方法, 其特征在于, 优先级高 的随机接入探针的发送初始功率大于或等于优先级低的随机接入探针的发送 初始功率;所述优先级高的随机接入探针的发送功率递增步长大于或等于所述 优先级低的随机接入探针的发送功率递增步长;所述优先级高的随机接入探针 的发送间隔小于或等于所述优先级低的随机接入探针的发送间隔。
10.根据权利要求 9所述的随机接入探针发送方法, 其特征在于, 所述随 机接入探针的发送功率递增, 直到达到系统允许的最大发射功率。
11.一种随机接入探针发送装置, 其特征在于, 包括:
优先级划分模块, 用于根据特定因素将随机接入探针划分为不同的优先 级;
优先级确定模块, 用于确定发起随机接入的当前随机接入探针的优先级; 以及
相关参数设置模块,用于根据所述当前随机接入探针的优先级来设置发送 所述当前随机接入探针的相关参数。
12.根据权利要求 11所述的随机接入探针发送装置, 其特征在于, 所述特 定因素包括紧急程度、 和 /或服务质量。
13.根据权利要求 12所述的随机接入探针发送装置, 其特征在于, 所述优 先级划分模块按照以下方式之一或组合将随机接入探针划分为不同的优先级: 按照所述紧急程度由高至低,将所述随机接入探针划分为由高至低的优先 级;
按照所述服务质量由高至低,将所述随机接入探针划分为由高至低的优先 级。
14.根据权利要求 11所述的随机接入探针发送装置, 其特征在于, 所述优 先级划分模块,还用于根据基站负载来调整所述优先级, 在基站负载重的情况 下, 将所述随机接入探针的优先级降低, 在基站负载轻的情况下, 将所述随机 接入探针的优先级升高。
15.根据权利要求 11所述的随机接入探针发送装置, 其特征在于, 所述优 先级确定模块根据发起随机接入的具体环境来确定所述当前随机接入探针的 优先级。
16.根据权利要求 11所述的随机接入探针发送装置, 其特征在于, 所述相 关参数包括: 发送初始功率、 发送功率递增步长、 发送间隔。
17.根据权利要求 16所述的随机接入探针发送装置, 其特征在于, 所述发 送初始功率按照如下方式得到: 发送初始功率 =平均接收功率 +开环调节, 其 中, 所述发送初始功率的大小通过改变所述开环调节的大小来改变。
18.根据权利要求 16所述的随机接入探针发送装置, 其特征在于, 对于优 先级不同的随机接入探针,所述相关参数设置模块设置的所述相关参数至少有 一个不同。
19.根据权利要求 18所述的随机接入探针发送装置, 其特征在于, 优先级 高的随机接入探针的发送初始功率大于或等于优先级低的随机接入探针的发 送初始功率;所述优先级高的随机接入探针的发送功率递增步长大于或等于所 述优先级低的随机接入探针的发送功率递增步长;所述优先级高的随机接入探 针的发送间隔小于或等于所述优先级低的随机接入探针的发送间隔。
20.根据权利要求 19所述的随机接入探针发送装置, 其特征在于, 所述随 机接入探针的发送功率递增, 直到达到系统允许的最大发射功率。
21. 一种移动终端, 其特征在于, 包括随机接入探针发送装置, 所述装置 包括:
优先级划分模块, 用于根据特定因素将随机接入探针划分为不同的优先 级;
优先级确定模块, 用于确定发起随机接入的当前随机接入探针的优先级; 以及
相关参数设置模块,用于根据所述当前随机接入探针的优先级来设置发送 所述当前随机接入探针的相关参数。
22.根据权利要求 21所述的移动终端, 其特征在于, 所述特定因素包括紧 急程度、 和 /或服务质量。
23.根据权利要求 22所述的移动终端, 其特征在于, 所述优先级划分模块 按照以下方式之一或组合将随机接入探针划分为不同的优先级:
按照所述紧急程度由高至低,将所述随机接入探针划分为由高至低的优先 级;
按照所述服务质量由高至低,将所述随机接入探针划分为由高至低的优先 级。
24.根据权利要求 21所述的移动终端,其特征在于,所述优先级划分模块, 还用于根据基站负载来调整所述优先级,在基站负载重的情况下, 将所述随机 接入探针的优先级降低, 在基站负载轻的情况下, 将所述随机接入探针的优先 级升高。
25.根据权利要求 21所述的移动终端, 其特征在于, 所述相关参数包括: 发送初始功率、 发送功率递增步长、 发送间隔。
26.根据权利要求 25所述的移动终端, 其特征在于, 对于优先级不同的随 机接入探针, 所述相关参数设置模块设置的所述相关参数至少有一个不同。
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