WO2011147357A1 - 级联远端控制设备链路扫描的方法和电调天线系统 - Google Patents

级联远端控制设备链路扫描的方法和电调天线系统 Download PDF

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Publication number
WO2011147357A1
WO2011147357A1 PCT/CN2011/075312 CN2011075312W WO2011147357A1 WO 2011147357 A1 WO2011147357 A1 WO 2011147357A1 CN 2011075312 W CN2011075312 W CN 2011075312W WO 2011147357 A1 WO2011147357 A1 WO 2011147357A1
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Prior art keywords
rcu
link
link scan
ccu
message
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PCT/CN2011/075312
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English (en)
French (fr)
Inventor
胡爱华
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华为技术有限公司
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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 JP2013525119A priority Critical patent/JP5623644B2/ja
Publication of WO2011147357A1 publication Critical patent/WO2011147357A1/zh
Priority to US13/762,857 priority patent/US8891547B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L12/403Bus networks with centralised control, e.g. polling
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/005Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using remotely controlled antenna positioning or scanning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • H04W88/085Access point devices with remote components

Definitions

  • the present invention relates to the field of communication antenna technologies, and in particular, to a method for scanning a link of a cascaded remote control device and an electrical adjustment antenna system.
  • a method for scanning a link of a cascaded remote control device and an electrical adjustment antenna system BACKGROUND OF THE INVENTION
  • SBT Smart Bias-Tee
  • RCU remote control unit
  • the electronically tuned antenna system usually consists of The micro-biasing device (Smart Bias-Tee, hereinafter referred to as SBT), the remote control unit (hereinafter referred to as RCU) and the antenna supporting the ESC.
  • the RCUs of multiple ESC antennas are often cascaded.
  • communication is performed through a shared remote serial communication bus such as an RS485 bus.
  • the RS485 bus is a remote serial communication bus in the industry communication standard, usually both the CCU and the RCU. Communicate using the RS485 bus.
  • RCUs may respond to link scan messages at the same time, causing bus collisions, which are prone to link scan failures, incomplete scans, and cascading sequence scan errors.
  • XID Exchange Label
  • HDLC Advanced Data Link Control
  • ASIG Antenna Interface Standards Group
  • the inventor found that: the RCU serial number is difficult to control, and the serial number of the RCU is recorded when the ESC antenna is installed, which not only increases the workload when the RCU is installed, but also has problems such as recording errors.
  • a technical approach is difficult to effectively solve the problem of bus conflicts in RCU cascading. Summary of the invention The invention provides a method for cascading RCU link scanning and an electric adjustment antenna system, which are used to effectively solve the problem of link scan bus conflict in RCU cascading.
  • the present invention provides a method for scanning a RCU link of a cascaded remote control device, including:
  • the cascaded RCU receives the link scan message sent by the central controller CCU, and the RCU other than the last RCU sends the link scan message to the RCU of the next stage through the remote serial communication bus;
  • Each RCU generates a link scan response message, and each of the RCUs other than the RCU that directly communicates with the CCU sends the link scan response message to the RCU of the upper level, and reports it to the CCU step by step.
  • the RCU directly communicating with the CCU directly sends a link scan message to the CCU;
  • the time at which the link scan message is sent to the next-level RCU is added to the time when the RCU receives the link scan message by adding a preset delay, or The time of transmitting the received link scan response message sent by the RCU of the next stage to the upper RCU, in addition to the last RCU and the RCUs directly communicating with the CCU, for each RCU Receiving a link scan response message sent by the RCU of the next stage, adding a preset delay, and sending, by the RCU directly communicating with the CCU, a link scan response sent by the received RCU of the next stage. The moment when the message is sent to the CCU, a preset delay is added to the time when the RCU receives the link scan response message sent by the RCU of the next stage.
  • the present invention also provides an electrical adjustment antenna system comprising a cascaded remote control device RCU in communication with a central controller ecu;
  • the cascaded RCU is configured to receive a link scan message sent by the CCU; among the cascaded RCUs, other RCUs other than the last RCU pass the link scan message through the remote serial communication bus. Sent to the RCU of the next level;
  • each of the cascaded RCUs After receiving the link scan message, each of the cascaded RCUs generates a link scan response message, and sends, by the RCUs other than the RCU directly communicating with the CCU, the link scan response message to the previous level.
  • the RCU is reported to the CCU step by step, and the RCU directly communicating with the CCU directly sends a link scan message to the CCU; among the cascaded RCUs, except for the last RCU
  • the RCU when the link scan message is sent to the next-level RCU, adds a preset delay to the time when the RCU receives the link scan message, or, in addition to the last RCU and the Each RCU other than the RCU directly communicating by the CCU transmits the received link scan response message sent by the RCU of the next stage to the time of the upper-level RCU, and sends the RCU that the next RCU receives the next-level RCU.
  • the time of the link scan response message is added with a preset delay, and the time when the RCU directly communicating with the CCU sends the received link scan response message sent by the RCU of the next stage to the CCU is the RCU. Receiving the next level The time of the link scan response message sent by the RCU plus a preset Delay.
  • the invention increases the delay in the link of the remote serial communication bus of each RCU, so that each RCU does not simultaneously respond to the link scan message, so that the delay of each RCU on the link of the remote serial communication bus
  • the link scan response message does not alias, thus effectively solving the problem of link scan bus collision when the RCU is cascaded.
  • FIG. 1 is a flowchart of a method for scanning a cascaded RCU link according to an embodiment of the present invention
  • FIG. 2a is a flowchart of a method for scanning a cascaded RCU link according to another embodiment of the present invention
  • 2b is a schematic diagram of a scenario in which multiple RCUs are cascaded according to another embodiment of the present invention.
  • 2c is a schematic diagram of an RCU receiving a link scan message according to another embodiment of the present invention.
  • 3a is a schematic diagram of a scenario in which multiple RCUs are cascaded according to another embodiment of the present invention.
  • FIG. 3b is a flowchart of a method for scanning a cascaded RCU link according to still another embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for scanning a cascaded RCU link according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an electrical adjustment antenna system according to another embodiment of the present invention.
  • the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the described embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • FIG. 1 is a flowchart of a method for scanning a cascaded RCU link according to an embodiment of the present invention. As shown in FIG. 1, the method includes:
  • Step 11 The cascaded RCU receives the link scan message sent by the CCU, and the RCU other than the last RCU sends the link scan message to the RCU of the next stage through the remote serial communication bus.
  • Step 12 Each RCU generates a link scan response message, except for the RCU directly communicating with the CCU.
  • Each RCU sends the link scan response message to the RCU of the upper level, and reports it to the CCU step by step.
  • the RCU directly communicating with the CCU directly sends a link scan message to the CCU.
  • the time at which the link scan message is sent to the next-level RCU, except for the last RCU adds a preset delay to the time when the RCU receives the link scan message, or
  • the last RCU and each RCU other than the RCU directly communicating with the CCU transmit the received link scan response message sent by the next-stage RCU to the upper-level RCU, and receive the time for the RCU.
  • the time of the link scan response message sent by the RCU of the next stage is added with a preset delay, and the time when the RCU directly communicating with the CCU sends the received link scan response message sent by the RCU of the next stage to the CCU, Adding a preset delay to the time when the RCU receives the link scan response message sent by the next-stage RCU.
  • the RCU when the RCU sends the link scan message to the RCU of the next stage, the following manner may be adopted:
  • the RCU When receiving the link scan message, the RCU first generates and sends the link scan response message to the ccu, and then The next level RCU sends the link scan message.
  • the preset delay is a time when the RCU generates and sends the link scan response message after receiving the link scan message.
  • the RCU when the RCU sends the link scan message to the RCU of the next stage, the following manner may be adopted: When receiving the link scan message, the RCU first sends a preset delay, and then sends the RCU to the next stage. The link scans the message, and the preset delay is greater than the time when the RCU generates and sends the link scan response message after receiving the link scan message.
  • the preset delays set in each RCU may be different.
  • delays are added to the link of the remote serial communication bus of each RCU, so that each RCU does not simultaneously respond to the link scan message, so that each RCU is extended on the link of the remote serial communication bus.
  • the link scan response message does not alias, thus effectively solving the problem of link scan bus collision when the RCU is cascaded.
  • the RCU uses a plurality of delay modes to forward the link scan message or the link scan response message, so that the delayed link scan response message of each RCU on the link of the remote serial communication bus is not It will be aliased.
  • the following describes the specific method for each RCU to send link scan messages and link scan response messages in combination with specific delay modes.
  • FIG. 2a is a flowchart of a method for scanning a cascaded RCU link according to another embodiment of the present invention.
  • a delay link is added to a link of a remote serial communication bus shared by multiple RCUs. To solve the bus collision problem when the CCU performs link scan.
  • FIG. 2b is a schematic diagram of a scenario in which multiple RCUs are cascaded according to the embodiment.
  • the cascaded RCUs include at least three.
  • each RCU is cascaded through a shared remote serial communication bus such as the RS485 bus.
  • the RS485 bus is the remote serial communication bus in the industry communication standard. Normally, the CCU and RCU use RS485. The bus communicates.
  • a delay link is added to the link of the RS485 bus of each RCU, and a delay link Td is set on the RS485 link of each RCU.
  • the link sent by each RCU on the RS485 link is caused by the delay.
  • the scan response message does not alias, so that multiple RCUs do not send link scan response messages to the CCU at the same time, thus avoiding the problem of causing bus collision.
  • the executor of the method in this embodiment may be a cascading RCU, and the method includes the following steps:
  • Step 21 The cascaded RCU receives the link scan message sent by the CCU. After receiving the link scan message, each RCU sends the link scan message to the next-level RCU through the RS485 bus, except for the last RCU. The RCU sends a link scan message to the next level. The time of the RCU adds a preset delay to the time when each RCU receives the link scan message.
  • each RCU receives the link scan message at a different time because there is a delay link on the RS485 bus of each RCU.
  • the CCU sends a link scan message to the RCU1 connected to itself through the RS485 bus, and the RCU1 sends the link scan message to the RCU2 through the lower port, and the RCU2 transmits the link scan message to the RCU3.
  • the link scan message is sent to the lower-level RCU after the delay of the delay link Td.
  • a delay link Td is inserted in the downlink of the RS485 bus of the RCU. Due to the existence of the delay link, each RCU will receive the link scan message at different times in turn, and the RCU receives the link scan message as shown in Figure 2c.
  • the preset delay of the delay link in each RCU is ⁇ .
  • the time for generating and replying the link scan response message is T2.
  • the delay set in each RCU is ⁇ > ⁇ 2.
  • the delay of RCU1 in response to the link scan message is T2
  • the delay of RCU2 in response to the link scan message is ⁇ + ⁇ 2
  • the delay of RCU3 in response to the link scan message is 2 ⁇ + ⁇ 2.
  • the received link scan response message will not be aliased, which ensures the correctness of the link scan.
  • the last RCU does not have a lower-level RCU connected to it. Therefore, the link scan response message can be directly sent to the CCU, and the remaining RCUs need to send the link scan message to the next-level RCU. A link scan response message is sent to the CCU.
  • Step 22 Each RCU generates a link scan response message, and each RCU except the RCU that directly communicates with the CCU sends the link scan response message to the RCU of the upper level, and reports it to the CCU step by step.
  • the RCU directly communicating with the CCU directly sends a link scan message to the CCU.
  • the delay link is added to the downlink of the RS485 bus of the RCU, so that when the CCU performs the link scan, the link scan response messages of the multiple cascaded RCUs can be shifted in time. Avoid the problem of link scan conflicts.
  • the delays ⁇ set by each RCU may be the same or different, that is, the delay may be set according to the specific situation of a certain RCU, but usually the required delay ⁇ is greater than the RCU generation and reply.
  • the time of the link scan response message is ⁇ 2.
  • each RCU does not respond to the link scan message at the same time, and the delayed link scan response message of each RCU on the RS485 link does not alias. Therefore, the problem of link scan bus conflict in the RCU cascading is effectively solved, and the reliable operation of the ESC antenna is ensured.
  • the preset delay ⁇ in the previous embodiment may be set to be equal to the time ⁇ 2 of the RCU generating and replying to the link scan response message.
  • the RCU when the RCU receives the link scan message, it first generates and The link scan response message is sent to the RCU or CCU of the upper level, and the link scan message is sent to the RCU of the next stage.
  • FIG. 3a is a schematic diagram of a scenario in which multiple RCUs are cascaded according to another embodiment of the present invention. Each RCU in the figure uses the method to send a link scan message to a lower-level RCU.
  • the executor of the method may be a cascading RCU, and the method includes the following steps:
  • Step 31 The cascaded RCU receives the link scan message sent by the CCU.
  • the CCU sends a link scan message to the RCU1 connected to itself through the RS485 bus, and the RCU1 sends the link scan message to the RCU2 through the lower port, and the RCU2 transmits the link scan message to the RCU3.
  • Step 32 After receiving the link scan message, each RCU sends a link scan response message to the CCU, except for the last RCU, and then sends the link scan message to the next-level RCU. The last RCU sends a link scan response message directly to the CCU.
  • the RCUs use the store-and-forward method to forward the link scan message, and then send the message of the current level, and then forward the information of the lower-level RCU, so that each RCU does not respond to the link scan message at the same time, so that each RCU
  • the delayed link scan response message on the RS485 link does not alias, thus effectively solving the problem of link scan bus collision when the RCU is cascaded, and ensuring reliable operation of the ESC antenna.
  • FIG. 4 is a flowchart of a method for scanning a cascaded RCU link according to another embodiment of the present invention.
  • the delay link is set when the RCU sends a link scan message to the next stage of the RCU.
  • the delay link may be set when the RCU sends the link scan response message of the next stage to the upper-level RCU.
  • the preset delay T1 can be set to be equal to the time T2 at which the RCU generates and replies to the link scan response message.
  • the RCU is When receiving the link scan message, the link scan response message is generated and replied to the RCU or the CCU of the upper level, and the received link scan response message of the next level is cached first.
  • the link scan response message of the link is sent out, the link scan response message of the next level is sent to the upper-level RCU.
  • the schematic diagram of the scenario in which multiple RCUs are cascaded in this embodiment is the same as that in FIG. 3a.
  • Each RCU in the figure uses the method to send a link scan message to the lower RCU and a link scan response message to the upper RCU.
  • Step 41 The cascaded RCU receives the link scan message sent by the CCU.
  • the CCU sends a link scan message to the RCU1 connected to itself through the RS485 bus, and the RCU1 sends the link scan message to the RCU2 through the lower port, and the RCU2 transmits the link scan message to the RCU3.
  • Step 42 After receiving the link scan message, each RCU generates a link scan response message.
  • Step 43 After receiving the link scan message, the RCU directly communicating with the CCU sends a link scan response message to the CCU, and then sends a link scan response message of the lower level RCU to the ecu; After receiving the link scan message, the RCU of the communication and the RCUs other than the last RCU send the link scan response message to the upper RCU through the RS485 bus, and then send the link scan response message of the lower RCU to the upper RCU. After receiving the link scan message, the last RCU sends the link scan response message to the upper RCU through the RS485 bus.
  • the operations performed by the RCU in direct communication with the CCU, the other RCUs in the middle, and the RCU at the end are different.
  • the link scan response message is directly sent to the CCU through the RS485 bus, and after the link scan response message is sent, the link scan response message of the lower RCU is sent. Give the CCU. The RCU eventually needs to forward the link scan response message of all RCUs in the system.
  • the other RCUs in the middle need to send the link scan response message to the CCU through the superior RCU.
  • Each RCU sends its own link scan response message first, and before receiving its link scan response message, even if it receives the link scan response message of the lower-level RCU, it will cache it and send it itself. After the link scan response message, the link scan response message of the lower level RCU is forwarded.
  • the CCU does not receive the link scan response message of different RCUs at the same time, thereby avoiding bus conflict.
  • the RCUs use the store-and-forward method to forward the link scan message, and then send the message of the current level, and then forward the information of the lower-level RCU, so that each RCU does not respond to the link scan message at the same time, so that each RCU in The delayed link scan response message on the RS485 link does not alias, thus effectively solving the problem of link scan bus collision when the RCU is cascaded, and ensuring reliable operation of the ESC antenna.
  • FIG. 5 is a schematic structural diagram of an electrical modulation antenna system according to another embodiment of the present invention.
  • the electrical adjustment antenna system of this embodiment may include: a CCU 51 and an RCU 52, and an SBT and an antenna; Multiple RCUs 52 are cascaded, RCU52 is connected to SBT, and RCU52 electrically adjusts the downtilt angle of the antenna through SBT.
  • the cascaded RCU 52 is configured to receive a link scan message sent by the CCU 51. In the cascaded RCUs 52, the RCU 52 except the last RCU 52 sends the link scan message to the next through the remote serial communication bus. Level 1 RCU52;
  • each of the cascaded RCUs 52 After receiving the link scan message, each of the cascaded RCUs 52 generates a link scan response message, and each RCU 52 except the RCU 52 that directly communicates with the CCU 51 sends the link scan response message to the RCU 52 of the upper level.
  • the CCU 51 is reported to the CCU 51, and the RCU 52 directly communicating with the CCU 51 directly sends a link scan message to the CCU 51;
  • the time at which the link scan message is sent to the next-stage RCU 52 is added to the time when the respective RCU 52 receives the link scan message.
  • Delay or, in addition to the last RCU 52 and each RCU 52 other than the RCU 52 directly communicating with the CCU 51, the time at which the received link scan response message sent by the next-stage RCU 52 is sent to the upper-level RCU 52 is The RCU 52 receives the link scan response message sent by the next-stage RCU 52 plus a preset delay, and the RCU 52 directly communicating with the CCU 51 sends the received link scan response sent by the next-stage RCU 52. The time when the message is sent to the CCU 51 is added with a preset delay for the time when the RCU 52 receives the link scan response message sent by the next-stage RCU 52.
  • the CCU 51 sends a link scan message to the RCU 52 connected to itself through the RS485 bus.
  • the RCU 52 forwards the link scan message to the lower-level RCU, and may set a delay link in the RCU 52.
  • the delay processing of the delay link is performed first.
  • the link scan message is forwarded to the lower level RCU52.
  • the preset delay set in each RCU 52 is greater than the time when the RCU 52 sends the link scan response message after receiving the link scan message.
  • each RCU 52 may be the same or different, that is, the delay may be set according to the specific situation of a certain RCU 52, but usually the required delay is greater than the time when the RCU 52 generates and replies the link scan response message. .
  • the RCU 52 uses a delay to forward the link scan message to the lower level RCU 52, and may send a link scan response message to the CCU 51 for the RCU 52, and after forwarding the link scan response message, forward the chain to the lower RCU. Road scan message.
  • the preset delay is a time when the RCU sends the link scan response message after receiving the link scan message.
  • each RCU does not respond to the link scan message at the same time, so that the delayed link scan response message of each RCU on the RS485 link does not alias. Therefore, the problem of link scan bus conflict in the RCU cascading is effectively solved, and the reliable operation of the ESC antenna is ensured.
  • a further embodiment of the present invention provides an electrical adjustment antenna system, which may include: a CCU 51 and an RCU 52, and an SBT and an antenna; in the ESC system, multiple RCUs 52 are cascaded, RCU 52 is connected to SBT, and RCU 52 is connected through SBT. The downtilt angle of the antenna is electrically adjusted.
  • the cascaded RCU 52 receives the link scan message sent by the CCU 51;
  • the RCU 52 of the cascaded RCU 52 directly communicating with the CCU 51 is configured to generate a link scan response message after receiving the link scan message, and send the link scan response message to the CCU 51 through the RS585 bus, and then Sending a link scan response message of the lower level RCU 52 to the CCU 51;
  • the RCU 52 of the cascaded RCU 52 except the RCU 52 directly communicating with the CCU 51 and the RCU 52 at the end of the RCU 52 are configured to generate a link scan response message and scan the link through the RS585 bus after receiving the link scan message.
  • the response message is sent to the upper-level RCU 52, and then the link scan response message of the lower-level RCU 52 is sent to the upper-level RCU 52;
  • the RCU 52 at the end of the cascaded RCU 52 is configured to send a link scan response message to the upper RCU 52 after receiving the link scan message.
  • each RCU adopts a store-and-forward manner when forwarding a link scan message, so that each RCU does not simultaneously respond to the link scan message, so that the delayed link scan response messages of the RCUs on the RS485 link are not mixed.
  • the stacking method effectively solves the problem of link scan bus collision when the RCU is cascaded, and ensures reliable operation of the ESC antenna.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the embodiment, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.
  • serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.
  • 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.

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Description

级联远端控制设备链路扫描的方法和电调天线系统 本申请要求于 2010年 8月 20日提交中国专利局、 申请号为 201010261194. 2、发明 名称为 "级联 RCU链路扫描的方法和电调天线系统"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 本发明涉及通信天线技术领域,特别涉及一种级联远端控制设备链路扫描的方法和 电调天线系统。 背景技术 随着电调天线相关技术的成熟, 运营商越来越倾向于使用电调天线, 电调天线可以 大幅度降低天线下倾角的调节和维护成本, 提高工作效率, 电调天线系统通常由微偏压 装置 (Smart Bias-Tee, 以下简称 SBT)、 远端控制设备 (Remote Control Unit, 以下 简称 RCU) 及支持电调的天线组成。
当通信系统中有多个电调天线时, 为了节省 SBT, 常把多个电调天线的 RCU级联使 用。 现有电调天线系统中, 多个 RCU级联时, 通过共享的远端串行通信总线如 RS485总 线进行通讯, RS485总线是业内通信标准中的远端串行通信总线, 通常 CCU与 RCU都使 用 RS485总线进行通信。 当中央控制器 (Center Control Unit, 以下简称 CCU) 使用高 级数据链路控制 (High-Level Data Link Control , 以下简称 HDLC) 协议中的 XID (交 换标识)帧扫描级联的 RCU链路时, 多个 RCU可能同时响应链路扫描消息, 造成总线冲 突, 很容易出现链路扫描失败、 扫描不全、 级联顺序扫描错误等问题。
为了解决多个 RCU级联时可能存在的总线冲突的问题,现有技术中采用天线接口标 准组织 (Antenna Interface Standards Group, 以下简称 ASIG) 协议按 RCU序列号进 行扫描的方式。 因此需要在安装电调天线时记录每个 RCU的序列号, 并尽量把 RCU的序 列号错开, 并在后续使用 RCU的序列号进行链路扫描, 以解决总线冲突问题。
在实现本发明的过程中, 发明人发现: RCU序列号错开难以控制, 在电调天线安装 时记录 RCU的序列号, 不仅增加了安装 RCU时的工作量, 也存在记录错误等问题, 因此 现有技术的方法很难有效解决 RCU级联时总线冲突的问题。 发明内容 本发明提供一种级联 RCU链路扫描的方法和电调天线系统,用以有效解决 RCU级联 时链路扫描总线冲突的问题。
本发明提供了一种级联远端控制设备 RCU链路扫描的方法, 包括:
级联的 RCU接收中央控制器 CCU发送的链路扫描消息,除最末端的 RCU外的其他 RCU 将所述链路扫描消息通过远端串行通信总线发送给下一级的 RCU;
所述各个 RCU生成链路扫描响应消息, 除与所述 CCU直接通信的 RCU之外的其他各 个 RCU将所述链路扫描响应消息发送给上一级的 RCU,逐级上报给所述 CCU,与所述 CCU 直接通信的 RCU直接将链路扫描消息发送给所述 CCU;
除最末端的一个 RCU以外的其他各个 RCU, 发送所述链路扫描消息给下一级 RCU的 时刻为所述各个 RCU接收到所述链路扫描消息的时刻加一个预设时延, 或者, 除最末端 的一个 RCU以及与所述 CCU直接通信的 RCU以外的其他各个 RCU, 发送接收到的下一级 的 RCU发送的链路扫描响应消息给上一级 RCU的时刻, 为所述各个 RCU接收到所述下一 级的 RCU发送的链路扫描响应消息的时刻加一个预设时延,所述与所述 CCU直接通信的 RCU发送接收到的下一级的 RCU发送的链路扫描响应消息给 CCU的时刻, 为所述 RCU接 收到所述下一级的 RCU发送的链路扫描响应消息的时刻加一个预设时延。
本发明还提供了一种电调天线系统,包括与中央控制器 ecu通信的级联的远端控制 设备 RCU;
所述级联的 RCU, 用于接收 CCU发送的链路扫描消息; 所述级联的各个 RCU中, 除 最末端的 RCU外的其他 RCU将所述链路扫描消息通过远端串行通信总线发送给下一级的 RCU;
所述级联的各个 RCU收到链路扫描消息后, 生成链路扫描响应消息, 除与所述 CCU 直接通信的 RCU之外的其他各个 RCU将所述链路扫描响应消息发送给上一级的 RCU, 逐 级上报给所述 CCU, 与所述 CCU直接通信的 RCU直接将链路扫描消息发送给所述 CCU; 所述级联的各个 RCU中, 除最末端的一个 RCU以外的其他各个 RCU, 发送所述链路 扫描消息给下一级 RCU的时刻为所述各个 RCU接收到所述链路扫描消息的时刻加一个预 设时延,或者,除最末端的一个 RCU以及与所述 CCU直接通信的 RCU以外的其他各个 RCU, 发送接收到的下一级的 RCU发送的链路扫描响应消息给上一级 RCU的时刻, 为所述各个 RCU接收到所述下一级的 RCU发送的链路扫描响应消息的时刻加一个预设时延, 所述与 所述 CCU直接通信的 RCU发送接收到的下一级的 RCU发送的链路扫描响应消息给 CCU的 时刻, 为所述 RCU接收到所述下一级的 RCU发送的链路扫描响应消息的时刻加一个预设 时延。
本发明通过在各 RCU的远端串行通信总线的链路中增加延时, 使得各 RCU不会同时 响应链路扫描消息,使得各 RCU在远端串行通信总线的链路上的延时链路扫描响应消息 不会混叠, 因此有效解决了 RCU级联时链路扫描总线冲突的问题。 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 的附图作一简单地介绍, 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性的前提下, 还可以根据这些附图获得 其他的附图。
图 1为本发明一实施例提供的级联 RCU链路扫描的方法流程图;
图 2a为本发明另一实施例提供的级联 RCU链路扫描的方法流程图;
图 2b为本发明另一实施例提供的多个 RCU级联的场景示意图;
图 2c为本发明另一实施例提供的 RCU接收链路扫描消息的示意图;
图 3a为本发明再一实施例提供的多个 RCU级联的场景示意图;
图 3b为本发明再一实施例提供的级联 RCU链路扫描的方法流程图;
图 4为本发明还一实施例提供的级联 RCU链路扫描的方法流程图;
图 5为本发明又一实施例提供的电调天线系统的结构示意图。 具体实 ¾ ^式 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它实施例,都属于本发明保护的范 围。
图 1为本发明一实施例提供的级联 RCU链路扫描的方法流程图, 如图 1所示, 该方 法包括:
步骤 11、 级联的 RCU接收 CCU发送的链路扫描消息, 除最末端的 RCU外的其他 RCU 将该链路扫描消息通过远端串行通信总线发送给下一级的 RCU。
步骤 12、各个 RCU生成链路扫描响应消息, 除与该 CCU直接通信的 RCU之外的其他 各个 RCU将该链路扫描响应消息发送给上一级的 RCU, 逐级上报给该 CCU, 与该 CCU直 接通信的 RCU直接将链路扫描消息发送给该 CCU。
其中,除最末端的一个 RCU以外的其他各个 RCU,发送该链路扫描消息给下一级 RCU 的时刻为该各个 RCU接收到该链路扫描消息的时刻加一个预设时延, 或者, 除最末端的 —个 RCU以及与该 CCU直接通信的 RCU以外的其他各个 RCU,发送接收到的下一级的 RCU 发送的链路扫描响应消息给上一级 RCU的时刻, 为该各个 RCU接收到该下一级的 RCU发 送的链路扫描响应消息的时刻加一个预设时延, 与该 CCU直接通信的 RCU发送接收到的 下一级的 RCU发送的链路扫描响应消息给 CCU的时刻, 为该 RCU接收到该下一级的 RCU 发送的链路扫描响应消息的时刻加一个预设时延。
优选的, RCU在向下一级的 RCU发送该链路扫描消息时, 可以采用以下方式: 自身 在接收到链路扫描消息时, 先生成并发送该链路扫描响应消息给 ccu, 然后再向下一级 的 RCU发送该链路扫描消息。 此时, 该预设时延为该 RCU接收到该链路扫描消息后生成 并发送该链路扫描响应消息的时间。
或者, RCU在向下一级的 RCU发送该链路扫描消息时, 可以采用以下方式: 自身在 接收到链路扫描消息时, 先经过一个预设时延后, 再向下一级的 RCU发送该链路扫描消 息, 并且该预设时延大于该 RCU接收到该链路扫描消息后生成并发送该链路扫描响应消 息的时间。
需要说明的是, 各个 RCU中设置的预设时延可以不相同。
本实施例通过在各 RCU的远端串行通信总线的链路中增加延时, 使得各 RCU不会同 时响应链路扫描消息, 使得各 RCU在远端串行通信总线的链路上的延时链路扫描响应消 息不会混叠, 因此有效解决了 RCU级联时链路扫描总线冲突的问题。
在上述实施例中, RCU采用了多种延时方式转发链路扫描消息或链路扫描响应消息, 以使得各 RCU在远端串行通信总线的链路上的延时链路扫描响应消息不会混叠, 以下结 合具体的延时方式介绍各 RCU发送链路扫描消息及链路扫描响应消息的具体方法。
参见图 2a为本发明另一实施例提供的级联 RCU链路扫描的方法流程图, 在本实施 例中, 通过在多个 RCU共享的远端串行通信总线的链路中增加时延环节, 以解决 CCU进 行链路扫描时发生总线冲突的问题。
参见图 2b为本实施例提供的多个 RCU级联的场景示意图,通常情况下,级联的 RCU 至少包括 3个。 在图 2b中, 各 RCU通过共享的远端串行通信总线如 RS485总线进行级 联, RS485总线是业内通信标准中的远端串行通信总线,通常情况下 CCU与 RCU使用 RS485 总线进行通信。 在各 RCU的 RS485总线的链路中增加时延环节, 每个 RCU的 RS485链路 上都设置了一个时延环节 Td, 由于延时的作用,使得各 RCU在 RS485链路上发送的链路 扫描响应消息不会混叠, 使得多个 RCU不会同时向 CCU发送链路扫描响应消息, 因此避 免了造成总线冲突的问题。
参见图 2a所示的级联 RCU链路扫描的方法流程图, 本实施例的方法的执行主体可 以为级联的各个 RCU, 方法包括以下步骤:
步骤 21、级联的 RCU接收 CCU发送的链路扫描消息。各 RCU收到该链路扫描消息后, 除最末端的一个 RCU以外的其他各个 RCU将该链路扫描消息通过 RS485总线发送给下一 级的 RCU, 该 RCU发送链路扫描消息给下一级 RCU的时刻为各个 RCU接收到链路扫描消 息的时刻加一个预设时延。
CCU通过 RS485总线向级联的各 RCU发送链路扫描消息时, 由于各 RCU的 RS485总 线上存在时延环节, 因此各 RCU会在不同的时刻接受到链路扫描消息。
参见图 2b中, CCU通过 RS485总线向与自身连接的 RCU1发送链路扫描消息,由 RCU1 将链路扫描消息通过下级端口发送到 RCU2, RCU2再将链路扫描消息传送到 RCU3。各 RCU 通过下级端口向级联的下级 RCU发送链路扫描消息时, 经过了时延环节 Td的延时处理 后才将链路扫描消息发送到下级 RCU。
本实施例在 RCU的 RS485总线的下行链路中插入了时延环节 Td。由于时延环节的存 在, 各 RCU会依次在不同时刻收到链路扫描消息, 各 RCU接收链路扫描消息的示意图如 图 2c所示。 设各 RCU中的时延环节的预设时延为 Π, RCU接收到链路扫描消息后, 生 成并回复链路扫描响应消息的时间为 T2。为确保各 RCU回复链路扫描响应消息的时间不 发生冲突, 各 RCU中设置的时延 Π〉Τ2。 参照图 2b, 图中的 RCU1响应链路扫描消息的 时延为 T2, RCU2响应链路扫描消息的时延为 Π+Τ2, RCU3响应链路扫描消息的时延为 2Π+Τ2。 对于 CCU来说接收到的链路扫描响应消息就不会混叠, 保证了链路扫描的正确 性。
其中, 最末端的 RCU由于没有与其相连的下级 RCU, 因此, 只需直接将链路扫描响 应消息发送给 CCU即可, 而其余 RCU需要将链路扫描消息发送给下一级的 RCU, 也需向 CCU发送链路扫描响应消息。
步骤 22、各个 RCU生成链路扫描响应消息, 除与该 CCU直接通信的 RCU之外的其他 各个 RCU将该链路扫描响应消息发送给上一级的 RCU, 逐级上报给该 CCU, 与该 CCU直 接通信的 RCU直接将链路扫描消息发送给该 CCU。 由上述方法可知, 本实施例在 RCU的 RS485总线的下行链路上增加时延环节, 使得 CCU在进行链路扫描时, 多个级联的 RCU的链路扫描响应消息能够在时间上错开, 避免 了链路扫描冲突的问题。
需要说明的是, 本实施例中各 RCU设置的时延 Π可以相同, 也可以不同, 即可以 根据某个 RCU的具体情况设置时延 Π, 但通常要求设置的时延 Π大于 RCU生成并回复 链路扫描响应消息的时间 Τ2。
本实施例通过在各 RCU的 RS485总线的链路中增加时延环节, 使得各 RCU不会同时 响应链路扫描消息, 各 RCU在 RS485链路上的延时链路扫描响应消息不会混叠, 因此有 效解决了 RCU级联时的链路扫描总线冲突的问题, 保证了电调天线可靠的工作。
优选的, 前一实施例中的预设时延 Π可以设置为等于 RCU生成并回复链路扫描响 应消息的时间 Τ2, 具体实施时, 即为 RCU在接收到链路扫描消息时, 先生成并回复链路 扫描响应消息给上一级的 RCU或者 CCU, 再将链路扫描消息发送给下一级的 RCU。 参见 图 3a为本发明再一实施例提供的多个 RCU级联的场景示意图, 图中的各 RCU采用该方 法向下级 RCU发送链路扫描消息。
其相应的级联 RCU链路扫描的方法流程图参见图 3b,方法的执行主体可以为级联的 各个 RCU, 方法包括以下步骤:
步骤 31、 级联的 RCU接收 CCU发送的链路扫描消息。
参见图 3a中, CCU通过 RS485总线向与自身连接的 RCU1发送链路扫描消息,由 RCU1 将链路扫描消息通过下级端口发送到 RCU2, RCU2再将链路扫描消息传送到 RCU3。
步骤 32、各 RCU收到该链路扫描消息后,除最末端的一个 RCU以外的其他各个 RCU, 先发送链路扫描响应消息给 CCU; 然后再将链路扫描消息发送给下一级 RCU; 最末端的 一个 RCU则直接发送链路扫描响应消息给 CCU。
本实施例各 RCU在转发链路扫描消息时,采用存储转发的方式,先发送本级的消息, 再转发下级 RCU的信息, 由此使得各 RCU不会同时响应链路扫描消息, 使得各 RCU在 RS485链路上的延时链路扫描响应消息不会混叠, 因此有效解决了 RCU级联时的链路扫 描总线冲突的问题, 保证了电调天线可靠的工作。
参见图 4为本发明还一实施例提供的级联 RCU链路扫描的方法流程图,前一实施例 中, 延时环节是设置在 RCU向下一级的 RCU发送链路扫描消息时, 在本实施例中, 可将 延时环节设置在 RCU将下一级的链路扫描响应消息发送给上一级 RCU的时。且预设时延 T1可以设置为等于 RCU生成并回复链路扫描响应消息的时间 T2,具体实施时, 即为 RCU 在接收到链路扫描消息时, 先生成并回复链路扫描响应消息给上一级的 RCU或者 CCU, 在此过程中对接收到的下一级的链路扫描响应消息先进行缓存,待将自身的链路扫描响 应消息发送出去后, 再将下一级的链路扫描响应消息发送给上一级 RCU。 本实施例中多 个 RCU级联的场景示意图与图 3a相同, 图中的各 RCU采用该方法向下级 RCU发送链路 扫描消息及向上级 RCU发送链路扫描响应消息。
步骤 41、 级联的 RCU接收 CCU发送的链路扫描消息。
参见图 4中, CCU通过 RS485总线向与自身连接的 RCU1发送链路扫描消息,由 RCU1 将链路扫描消息通过下级端口发送到 RCU2, RCU2再将链路扫描消息传送到 RCU3。
步骤 42、 各 RCU收到该链路扫描消息后, 生成链路扫描响应消息。
步骤 43、与该 CCU直接通信的 RCU收到该链路扫描消息后,将链路扫描响应消息发 送给该 CCU, 然后再将下级 RCU的链路扫描响应消息发送给 ecu; 除与该 ecu直接通信 的 RCU以及最末端的 RCU以外的其他各个 RCU接收到链路扫描消息后,通过 RS485总线 将该链路扫描响应消息发送给上级 RCU, 然后将下级 RCU的链路扫描响应消息发送给上 级 RCU; 最末端的 RCU收到链路扫描消息后, 通过 RS485总线将该链路扫描响应消息发 送给上级 RCU。
在本实施例中, 与 CCU直接通信的 RCU, 中间的其他 RCU, 以及最末端的 RCU所执 行的操作均有所不同。
与 CCU直接通信的 RCU生成链路扫描响应消息后,通过 RS485总线将链路扫描响应 消息直接发送给 CCU, 在发送了该链路扫描响应消息后, 再将下级 RCU的链路扫描响应 消息发送给 CCU。 该 RCU最终需要转发系统中所有 RCU的链路扫描响应消息。
而中间的其他 RCU,则需要通过上级 RCU将链路扫描响应消息相发送给 CCU。各 RCU 都是先发送自己的链路扫描响应消息, 在自己的链路扫描响应消息未发送完毕前, 即使 接收到下级 RCU的链路扫描响应消息, 也将其进行缓存处理, 在发送完自己的链路扫描 响应消息后, 再转发下级 RCU的链路扫描响应消息。
最末端的 RCU由于没有与其相连的下级 RCU, 因此, 只需直接将链路扫描响应消息 发送给 CCU即可。
通过上述方法, 使得 CCU不会同时收到不同 RCU的链路扫描响应消息, 避免了产生 总线冲突。
本实施例各 RCU在转发链路扫描消息时,采用存储转发的方式,先发送本级的消息, 再转发下级 RCU的信息, 由此使得各 RCU不会同时响应链路扫描消息, 使得各 RCU在 RS485链路上的延时链路扫描响应消息不会混叠, 因此有效解决了 RCU级联时的链路扫 描总线冲突的问题, 保证了电调天线可靠的工作。
图 5为本发明又一实施例提供的电调天线系统的结构示意图, 如图 5所示, 本实施 例的电调天线系统可包括: CCU51和 RCU52以及 SBT和天线;在该电调系统中,多个 RCU52 进行了级联, RCU52与 SBT连接, RCU52通过 SBT对天线的下倾角进行电调。
该级联的 RCU52 , 用于接收 CCU51发送的链路扫描消息; 该级联的各个 RCU52中, 除最末端的 RCU52外的其他 RCU52将该链路扫描消息通过远端串行通信总线发送给下一 级的 RCU52 ;
该级联的各个 RCU52收到链路扫描消息后, 生成链路扫描响应消息, 除与该 CCU51 直接通信的 RCU52之外的其他各个 RCU52将该链路扫描响应消息发送给上一级的 RCU52 , 逐级上报给该 CCU51,与该 CCU51直接通信的 RCU52直接将链路扫描消息发送给该 CCU51;
该级联的各个 RCU52中, 除最末端的一个 RCU52以外的其他各个 RCU52, 发送 该链路扫描消息给下一级 RCU52的时刻为该各个 RCU52接收到该链路扫描消息的时刻加 一个预设时延, 或者, 除最末端的一个 RCU52以及与该 CCU51直接通信的 RCU52以外的 其他各个 RCU52 ,发送接收到的下一级的 RCU52发送的链路扫描响应消息给上一级 RCU52 的时刻, 为该各个 RCU52接收到该下一级的 RCU52发送的链路扫描响应消息的时刻加一 个预设时延, 该与该 CCU51直接通信的 RCU52发送接收到的下一级的 RCU52发送的链路 扫描响应消息给 CCU51的时刻, 为该 RCU52接收到该下一级的 RCU52发送的链路扫描响 应消息的时刻加一个预设时延。
其中, 该 CCU51通过 RS485总线向与自身连接的 RCU52发送链路扫描消息。
RCU52采用延时后向下级 RCU转发链路扫描消息的方式, 可以采用在 RCU52中设置 一个时延环节, 在向下级 RCU52转发链路扫描消息时, 先经过该时延环节的延时处理, 使得经过预设的时延后, 链路扫描消息才转发到下级 RCU52。 且为确保各 RCU52回复链 路扫描响应消息的时间不发生冲突,各 RCU52中设置的预设时延大于该 RCU52接收到该 链路扫描消息后发送该链路扫描响应消息的时间。
需要说明的是,各 RCU52设置的时延可以相同,也可以不同,即可以根据某个 RCU52 的具体情况设置时延,但通常要求设置的时延大于 RCU52生成并回复链路扫描响应消息 的时间。
或者, RCU52采用延时后向下级 RCU52转发链路扫描消息的方式, 可以为 RCU52先 向 CCU51发送链路扫描响应消息, 在发送完链路扫描响应消息后, 在向下级 RCU转发链 路扫描消息。 此时, 该预设时延为该 RCU接收到该链路扫描消息后发送该链路扫描响应 消息的时间。
本实施例中的 CCU51和 RCU52之间的交互机理和效果可参见图 1〜图 4对应实施例 的记载, 在此不再赘述。
本实施例通过在各 RCU的 RS485总线的链路中增加延时, 使得各 RCU不会同时响应 链路扫描消息, 使得各 RCU在 RS485链路上的延时链路扫描响应消息不会混叠, 因此有 效解决了 RCU级联时的链路扫描总线冲突的问题, 保证了电调天线可靠的工作。
本发明再一实施例提供了一种电调天线系统, 可包括: CCU51 和 RCU52 以及 SBT 和天线; 在该电调系统中, 多个 RCU52进行了级联, RCU52与 SBT连接, RCU52通过 SBT 对天线的下倾角进行电调。
该级联的 RCU52接收 CCU51发送的链路扫描消息;
该级联的 RCU52中与该 CCU51直接通信的 RCU52 ,用于在接收到该链路扫描消息后, 生成链路扫描响应消息并通过 RS585总线将该链路扫描响应消息发送给该 CCU51 , 然后 再将下级 RCU52的链路扫描响应消息发送给 CCU51 ;
该级联的 RCU52中除与该 CCU51直接通信的 RCU52及最末端的 RCU52以外的其他各 个 RCU52 , 用于接收到链路扫描消息后, 生成链路扫描响应消息并通过 RS585总线将该 链路扫描响应消息发送给上级 RCU52 , 然后再将下级 RCU52的链路扫描响应消息发送给 上级 RCU52 ;
该级联的 RCU52中最末端的 RCU52 , 用于在接收到链路扫描消息后, 发送链路扫描 响应消息给上级 RCU52。
本实施例中的 CCU51和 RCU52之间的交互机理和效果可参见图 4对应实施例的记载, 在此不再赘述。
本实施例各 RCU在转发链路扫描消息时, 采用存储转发的方式, 使得各 RCU不会同 时响应链路扫描消息, 使得各 RCU在 RS485链路上的延时链路扫描响应消息不会混叠, 因此有效解决了 RCU级联时的链路扫描总线冲突的问题, 保证了电调天线可靠的工作。
本领域普通技术人员可以理解: 附图只是一个实施例的示意图, 附图中的模块或流 程并不一定是实施本发明所必须的。
本领域普通技术人员可以理解: 实施例中的装置中的模块可以按照实施例描述分布 于实施例的装置中, 也可以进行相应变化位于不同于本实施例的一个或多个装置中。 上 述实施例的模块可以合并为一个模块, 也可以进一步拆分成多个子模块。 上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。
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; 而前述的存储介质包括: R0M、 RAM, 磁碟 或者光盘等各种可以存储程序代码的介质。
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实施例技术方案的精 神和范围。

Claims

权利要求
1、 一种级联远端控制设备 RCU链路扫描的方法, 其特征在于, 包括:
级联的 RCU接收中央控制器 CCU发送的链路扫描消息,除最末端的 RCU外的其他 RCU 将所述链路扫描消息通过远端串行通信总线发送给下一级的 RCU;
所述各个 RCU生成链路扫描响应消息, 除与所述 CCU直接通信的 RCU之外的其他各 个 RCU将所述链路扫描响应消息发送给上一级的 RCU,逐级上报给所述 CCU,与所述 CCU 直接通信的 RCU直接将链路扫描消息发送给所述 CCU;
除最末端的一个 RCU以外的其他各个 RCU, 发送所述链路扫描消息给下一级 RCU的 时刻为所述各个 RCU接收到所述链路扫描消息的时刻加一个预设时延, 或者, 除最末端 的一个 RCU以及与所述 CCU直接通信的 RCU以外的其他各个 RCU, 发送接收到的下一级 的 RCU发送的链路扫描响应消息给上一级 RCU的时刻, 为所述各个 RCU接收到所述下一 级的 RCU发送的链路扫描响应消息的时刻加一个预设时延,所述与所述 CCU直接通信的 RCU发送接收到的下一级的 RCU发送的链路扫描响应消息给 CCU的时刻, 为所述 RCU接 收到所述下一级的 RCU发送的链路扫描响应消息的时刻加一个预设时延。
2、 根据权利要求 1所述的级联 RCU链路扫描的方法, 其特征在于,
所述预设时延为所述 RCU接收到所述链路扫描消息后生成并发送所述链路扫描响应 消息的时间。
3、 根据权利要求 1所述的级联 RCU链路扫描的方法, 其特征在于,
所述预设时延大于所述 RCU接收到所述链路扫描消息后生成并发送所述链路扫描响 应消息的时间。
4、 根据权利要求 1、 2或 3所述的级联 RCU链路扫描的方法, 其特征在于, 所述各 个 RCU中设置的所述预设时延不相同。
5、 一种电调天线系统, 其特征在于, 包括与中央控制器 CCU通信的级联的远端控 制设备 RCU;
所述级联的 RCU, 用于接收 CCU发送的链路扫描消息; 所述级联的各个 RCU中, 除 最末端的 RCU外的其他 RCU将所述链路扫描消息通过远端串行通信总线发送给下一级的 RCU;
所述级联的各个 RCU收到链路扫描消息后, 生成链路扫描响应消息, 除与所述 CCU 直接通信的 RCU之外的其他各个 RCU将所述链路扫描响应消息发送给上一级的 RCU, 逐 级上报给所述 CCU, 与所述 CCU直接通信的 RCU直接将链路扫描消息发送给所述 CCU; 所述级联的各个 RCU中, 除最末端的一个 RCU以外的其他各个 RCU, 发送所述链路 扫描消息给下一级 RCU的时刻为所述各个 RCU接收到所述链路扫描消息的时刻加一个预 设时延,或者,除最末端的一个 RCU以及与所述 CCU直接通信的 RCU以外的其他各个 RCU, 发送接收到的下一级的 RCU发送的链路扫描响应消息给上一级 RCU的时刻, 为所述各个 RCU接收到所述下一级的 RCU发送的链路扫描响应消息的时刻加一个预设时延, 所述与 所述 CCU直接通信的 RCU发送接收到的下一级的 RCU发送的链路扫描响应消息给 CCU的 时刻, 为所述 RCU接收到所述下一级的 RCU发送的链路扫描响应消息的时刻加一个预设 时延。
6、 根据权利要求 5所述的电调天线系统, 其特征在于,
所述预设时延为所述 RCU接收到所述链路扫描消息后生成并发送所述链路扫描响应 消息的时间。
7、 根据权利要求 5所述的电调天线系统, 其特征在于,
所述预设时延大于所述 RCU接收到所述链路扫描消息后生成并发送所述链路扫描响 应消息的时间。
8、 根据权利要求 5、 6或 7所述的电调天线系统, 其特征在于, 所述各个 RCU中设 置的所述预设时延不相同。
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