WO2012146030A1 - Procédé et système de traitement de nœud d'accès pour régler la fréquence porteuse - Google Patents

Procédé et système de traitement de nœud d'accès pour régler la fréquence porteuse Download PDF

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Publication number
WO2012146030A1
WO2012146030A1 PCT/CN2011/083578 CN2011083578W WO2012146030A1 WO 2012146030 A1 WO2012146030 A1 WO 2012146030A1 CN 2011083578 W CN2011083578 W CN 2011083578W WO 2012146030 A1 WO2012146030 A1 WO 2012146030A1
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WO
WIPO (PCT)
Prior art keywords
access node
terminal
carrier frequency
information
frequency adjustment
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Application number
PCT/CN2011/083578
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English (en)
Chinese (zh)
Inventor
鲁照华
陈琳
郁光辉
郝鹏
梁春丽
夏树强
戴博
刘锟
Original Assignee
中兴通讯股份有限公司
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Publication of WO2012146030A1 publication Critical patent/WO2012146030A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0035—Synchronisation arrangements detecting errors in frequency or phase

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a processing method and system for an access node to adjust a carrier frequency. Background technique
  • the data service is mainly for Internet services, and the requirements for service quality are relatively simple, and far lower than the requirements for service quality of traditional telecommunication services.
  • the cellular mobile communication system is mainly designed for high-speed mobile, seamless telecommunication traditional telecommunication service design. When it carries large-flow and low-speed IP (Internet Protocol) packet services, the efficiency is low and the cost is too high.
  • the main purpose of the present invention is to provide a processing method and system for adjusting an carrier frequency of an access node, and solve the problem of unbalanced load and co-channel interference of the working carrier frequency by carrier frequency adjustment, thereby improving the overall service of the system. quality.
  • a method for processing an access node to adjust a carrier frequency comprising:
  • the access node sends carrier frequency adjustment information to the terminal; the terminal performs corresponding processing according to the received carrier frequency adjustment information.
  • the terminal performs corresponding processing according to the received carrier frequency adjustment information, including: when the terminal determines the processing mode by the terminal itself, if the terminal determines to perform carrier frequency adjustment, the terminal adjusts the information according to the carrier frequency.
  • the carrier frequency adjustment is performed; if the terminal decides to perform the handover, the terminal actively initiates an operation of switching to another access node.
  • the terminal performs corresponding processing according to the received carrier frequency adjustment information, including: when the access node determines the processing mode of the terminal, if the access node determines that the terminal needs to perform carrier frequency adjustment, then The terminal performs carrier frequency adjustment according to the carrier frequency adjustment information. If the access node determines that the terminal needs to perform handover, the access node actively initiates an operation of switching the terminal to another access node.
  • the carrier frequency adjustment information includes: an operating frequency selected by the access node and an adjustment effective time.
  • the access node sends the carrier frequency adjustment information to the terminal, where the access node sends the carrier frequency adjustment information to the terminal by means of broadcast or proprietary signaling.
  • the method further includes: the access node sends the neighboring area information to the terminal, and the terminal performs scanning measurement on the neighboring access node according to the neighboring area information.
  • the terminal actively initiates an operation of switching to another access node, including: According to the measurement result of the neighboring access node, the appropriate target access node is selected, and the handover to the target access node is initiated; the access node sends the context information of the terminal to the target access node when the terminal switches.
  • the access node determines the terminal that needs to perform the handover and initiates the operation of the terminal to switch to the other access node, including: the access node reports the measurement result according to the terminal. And selecting a suitable target access node for the terminal, and actively initiating handover of the terminal to the target access node; the access node sends the context information of the terminal to the target access node when the terminal switches.
  • the transmitting node sends the carrier frequency adjustment information to the terminal by means of broadcast or the dedicated signaling, including: the access node determines the terminal that needs to adjust the carrier frequency, and sends the carrier frequency adjustment information only to the Correspondingly, the terminal that needs to adjust the carrier frequency, or the access node sends the proprietary preamble information to the terminal; the terminal performs corresponding carrier frequency adjustment according to the carrier frequency adjustment information.
  • the terminal performs corresponding carrier frequency adjustment according to the carrier frequency adjustment information, including: if the terminal receives the proprietary preamble information, the terminal uses the proprietary preamble to perform non-contention random access to the previously carried carrier frequency.
  • the adjusted access node if the terminal does not receive the proprietary preamble information, the terminal performs a contention-based random access to the access node that has previously undergone carrier frequency adjustment?
  • the terminal After the terminal completes the random access, it restores the data connection with the access node that has previously performed carrier frequency adjustment.
  • a processing system for adjusting an carrier frequency of an access node comprising: an information sending unit and a processing unit; wherein
  • An information sending unit configured to send carrier frequency adjustment information to a processing unit of the terminal
  • a processing unit configured to perform corresponding processing according to the carrier frequency adjustment information sent by the information sending unit of the received access node.
  • the processing unit is further configured to: when the mode is determined by the terminal itself Next, when determining the carrier frequency adjustment, the carrier frequency adjustment is performed according to the carrier frequency adjustment information; when the handover is determined, the operation of switching to another node is actively initiated.
  • the information sending unit is further configured to: the processing mode of the decision processing unit needs to perform carrier frequency adjustment or needs to be switched. When the processing mode of the decision is that carrier frequency adjustment is required, the notification processing unit adjusts according to the carrier frequency. The information is subjected to carrier frequency adjustment; when the processing mode of the decision is that handover is required, an instruction to switch the terminal to another access node is sent to the processing unit;
  • the processing unit is further configured to receive, by the information sending unit, a notification that the carrier frequency adjustment is performed according to the carrier frequency adjustment information, and receive the local terminal that is sent by the information sending unit to switch to another access node. Instructions.
  • the information sending unit is specifically configured to write the selected operating frequency and the adjusted effective time into carrier frequency adjustment information.
  • the information sending unit is further configured to send the carrier frequency adjustment information to the processing unit by means of broadcast or proprietary signaling.
  • the processing unit is further configured to: when the initiative initiates the handover to the operation of the other access node, perform measurement on the neighboring access node, and send the measurement result of the neighboring access node to the information sending unit, and receive the information to be sent.
  • the notification sent by the unit to the target access node is switched according to the notification;
  • the information sending unit is further configured to select an appropriate target access node according to the measurement result sent by the processing unit, and notify the processing unit to switch to the target access node, and send the context information to the target access node.
  • the information sending unit is further configured to: when the processing mode of the decision is that the switching needs to be performed, the notification processing unit starts to perform measurement, and reports the measurement result, and selects an appropriate target access node according to the measurement result, and uses the context information of the terminal. Sending to the target access node, notifying the processing unit to switch to the target access node;
  • the processing unit is further configured to: when the access node determines the terminal that needs to perform handover and initiate the operation of switching the terminal to another access node, receiving the notification that the information processing unit starts to perform measurement
  • the measurement result reported to the information transmitting unit is switched to the target access node according to the notification sent by the information sending unit to the target access node.
  • the processing unit is located on the terminal, and the information sending unit is located on the access node.
  • the access node of the present invention sends carrier frequency adjustment information to the terminal; the terminal performs corresponding processing according to the received carrier frequency adjustment information.
  • the problem of unbalanced load and co-channel interference of the working carrier frequency is solved by the carrier frequency adjustment, thereby improving the overall service quality of the system.
  • 1 is a flow chart showing the principle of carrier frequency adjustment by an access node
  • FIG. 1 is a flow chart of the terminal determining the processing mode according to the received carrier frequency adjustment information
  • FIG. 3 is a flow chart of the access node determining the processing mode of the served terminal and performing corresponding processing. detailed description
  • the basic idea of the present invention is: The access node sends carrier frequency adjustment information to the terminal; the terminal performs corresponding processing according to the received carrier frequency adjustment information.
  • a processing method for an access node to adjust a carrier frequency mainly includes the following contents:
  • the access node determines that the carrier frequency needs to be adjusted according to the energy information of each carrier frequency currently managed, and the access node sends the carrier frequency adjustment information to the terminal; the terminal performs corresponding processing according to the received carrier frequency adjustment information.
  • the energy information of the currently managed carrier frequency may be that the access node measures the energy information on multiple carrier frequencies managed by the access node, or may send the control message to the terminal managed by the access node, and then access The node receiving terminal feeds back energy information on multiple carrier frequencies;
  • the energy information is a signal power value and a noise power value in each carrier frequency managed by the current access node;
  • the control message includes an identifier of a carrier frequency that needs to be measured by the terminal, or an identifier of a carrier frequency that does not require measurement by the terminal.
  • the determining needs to adjust the carrier frequency, and determining, according to the currently managed energy information of each carrier frequency, a carrier frequency having a poor quality, and a carrier carrier having a good quality; wherein the carrier carrier of the poor quality is used in the prior art.
  • the decision for example, can be determined using a signal to noise ratio.
  • the terminal performs corresponding processing according to the received carrier frequency adjustment information, and includes the following two situations:
  • Case 1 In the case of the terminal's own decision processing mode, if the terminal decides to perform carrier frequency adjustment, the terminal performs carrier frequency adjustment according to the carrier frequency adjustment information; if the terminal decides to perform handover, the terminal actively initiates handover to other access. The operation of the node.
  • Case 2 In the case that the access node decides the processing mode of the terminal, if the access node determines that the terminal needs to perform carrier frequency adjustment, the terminal performs carrier frequency adjustment according to the carrier frequency adjustment information; if the access node determines the terminal If the handover is required, the access node initiates an operation of switching the terminal to another access node.
  • the other access node refers to: a node other than the access node that currently sends the carrier frequency adjustment information to the terminal;
  • the carrier frequency adjustment information includes, but is not limited to, information such as an operating frequency and an adjustment effective time selected by the access node.
  • the access node And sending, by the access node, carrier frequency adjustment information to the terminal, where: the access node sends the carrier frequency adjustment information to the terminal by using broadcast or proprietary signaling.
  • the access node sends the carrier frequency adjustment information to the terminal by using dedicated signaling, and further includes: the access node determines the terminal that needs to adjust the carrier frequency, and sends the carrier frequency adjustment information only to the corresponding required carrier frequency.
  • the terminal optionally, the access node can send proprietary preamble information to The terminal; wherein the proprietary preamble information is a preamble sequence specifically allocated to a terminal for random access.
  • the method further includes: the access node sends the neighboring area information to the terminal, where the terminal may scan and measure the neighboring access node according to the neighboring area information; wherein, the neighboring area information refers to: information about neighboring access nodes of an access node, such as carrier frequency, cell identifier, and so on.
  • the access node determines the terminal that needs to perform the handover, and initiates the handover of the terminal to the other access node, and further includes: the access node selects a suitable target access node for the terminal according to the measurement result reported by the terminal, and initiates the initiative.
  • the terminal is switched to the target access node; the access node sends the context information of the terminal to the target access node when the terminal switches.
  • the terminal performs corresponding carrier frequency adjustment according to the received carrier frequency adjustment information, and performs corresponding operation frequency adjustment according to the carrier frequency adjustment information.
  • the terminal performs the corresponding carrier frequency adjustment according to the received carrier frequency adjustment information or selects an operation initiated by the terminal to switch the terminal to another access node, and further includes:
  • the terminal After receiving the carrier frequency adjustment information, the terminal decides whether to perform the corresponding carrier frequency adjustment or switch the terminal to another access node;
  • the terminal decides to perform carrier frequency adjustment, the terminal performs corresponding working frequency adjustment according to the carrier frequency adjustment information. If the terminal decides to switch to another access node, the terminal actively initiates handover of the terminal to other access nodes.
  • the terminal may further include:
  • the terminal uses the proprietary preamble to perform non-contention random access to the original access node that has previously undergone carrier frequency adjustment; if the terminal does not receive the proprietary preamble information, the terminal performs the terminal. Based on the random access to the original access node that has been previously adjusted for carrier frequency? After the terminal completes the random access, it restores the data connection with the original access node that has previously performed carrier frequency adjustment.
  • the terminal actively initiates handover of the terminal to another access node, and further includes: the terminal selects a suitable target access node according to the measurement result of the neighboring access node, and initiates handover to the target access node; The terminal sends the context information of the terminal to the target access node.
  • the access node can dynamically adjust the operating frequency
  • the corresponding terminal can select to switch to other access nodes, or select to follow the adjustment of the access node to adjust the operating frequency of the terminal. In this way, not only load balancing can be achieved, but also co-channel interference can be reduced, the overall service quality of the system can be improved, and the deployment cost of the communication node can be reduced.
  • FIG. 1 is a schematic flowchart of a carrier frequency adjustment performed by an access node.
  • an access node sends carrier frequency adjustment information to a terminal; the terminal adjusts a working carrier frequency of the terminal according to the carrier frequency adjustment information, or selects a terminal. Switch to other access nodes; the access node switches to the new working carrier frequency.
  • Step 101 The access node determines, according to the energy information of each carrier frequency currently managed, that the carrier frequency needs to be adjusted, and sends carrier frequency adjustment information to the terminal.
  • Step 102 The terminal determines the processing mode. If the terminal decides to perform carrier frequency adjustment, step 103 is performed. If the terminal decides to perform handover, step 104 is performed.
  • Step 103 The terminal ends the current process by performing corresponding operation frequency adjustment according to the carrier frequency adjustment information.
  • Step 104 The terminal actively initiates the operation of switching the terminal to another access node, and then ends the process.
  • the access node A operates at carrier frequency 1 and serves a number of terminals, such as terminal 1, terminal 2, and the like.
  • the access node A measures the energy information on the plurality of carrier frequencies, and/or the access node A notifies the subordinate terminal to measure the energy information on the plurality of carrier frequencies through the control message, and then feeds back to the access node A; the access node A Based on the above energy information, it is found that the carrier frequency 1 has a large interference, and the carrier frequency 2 has a small interference, thereby determining to adjust to the carrier frequency 2 as the working carrier frequency.
  • the access node A broadcasts and transmits carrier frequency adjustment information, such as carrier frequency 2 information, and carrier frequency adjustment effective time and the like;
  • the terminal served by the access node A decides whether to follow the node A for carrier frequency adjustment or switch to other access nodes;
  • the terminal 1 decides to follow the node A for carrier frequency adjustment, the terminal 1 adjusts the working carrier frequency to the carrier frequency 2 according to the carrier frequency adjustment effective time information, and then the terminal 1 accesses the access node A at the carrier frequency 2, For example, after the uplink and downlink synchronization can be completed by using the random access based on the competition, the data connection and the data transmission before the restoration are started.
  • the access node A operates on the carrier frequency 1 and serves a number of terminals, such as terminal 1, terminal 2, and the like.
  • the access node A measures the energy information on the multiple carrier frequencies, and/or the access node A notifies the subordinate terminal to measure the energy information on the multiple carrier frequencies through the control message, and then feeds back to the access node A; the access node A Based on the above energy information, it is found that the carrier frequency 1 has a large interference, and the carrier frequency 2 has a small interference, thereby determining to adjust to the carrier frequency 2 as the working carrier frequency.
  • the access node A broadcasts and transmits carrier frequency adjustment information, such as carrier frequency 2 information, and information such as the carrier frequency adjustment effective time;
  • the terminal served by the access node A decides whether to follow the node A for carrier frequency adjustment or switch to other access nodes;
  • the terminal 2 If the terminal 2 switches to another access node, the terminal 2 performs scanning measurement on the neighboring access node, and then finds the most suitable neighboring access node, such as the access node B, as the target access node, and the terminal actively initiates the handover.
  • the access node A may send the context information of the terminal 2 to the access node B to accelerate the handover of the terminal 2; Finally, the terminal 2 completes the handover to the access node B, and the access node B serves the terminal.
  • Application example 3 :
  • the access node A operates on the carrier frequency 1 and serves a number of terminals, such as terminal 1, terminal 2, and the like.
  • the access node A measures the energy information on the multiple carrier frequencies, and/or the access node A notifies the subordinate terminal to measure the energy information on the multiple carrier frequencies through the control message, and then feeds back to the access node A; the access node A Based on the above energy information, it is found that the carrier frequency 1 has a large interference, and the carrier frequency 2 has a small interference, thereby determining to adjust to the carrier frequency 2 as the working carrier frequency.
  • the access node A broadcasts and transmits carrier frequency adjustment information, such as carrier frequency 2 information, and carrier frequency adjustment effective time; and the access node A broadcasts information of the neighboring access node;
  • the terminal served by the access node A After receiving the carrier frequency adjustment information and the information of the neighboring access nodes, the terminal served by the access node A performs scanning measurement on the adjacent access node, and if it can find a neighboring access node suitable for hand-in, such as access
  • the terminal actively initiates the handover to the target access node; otherwise, the terminal follows the access node A to perform corresponding carrier frequency adjustment.
  • the access node A may send the context information that needs to be switched to the neighboring target access node to accelerate the handover of the terminal.
  • the following application examples 4 to 5 are mainly used for the scenario in which the access node determines the processing mode of the served terminal and performs corresponding processing. As shown in FIG. 3, the following steps are included:
  • Step 201 The access node determines to perform carrier frequency adjustment according to energy information of each carrier frequency currently managed.
  • Step 202 The access node determines the processing mode of the served terminal. If the terminal served by the access node is a terminal that needs to perform carrier frequency adjustment, step 203 is performed; if the terminal served by the access node needs to switch to another terminal, The terminal of the ingress node performs step 205.
  • Step 203 The access node sends carrier frequency adjustment information to the terminal.
  • Step 204 The terminal ends the process according to the carrier frequency adjustment information and performs corresponding adjustment.
  • Step 205 The access node initiates an operation of switching the terminal to another access node.
  • Step 206 The terminal ends the process after switching to another access node.
  • the access node A operates on the carrier frequency 1 and serves a number of terminals, such as terminal 1, terminal 2, and the like.
  • the access node A measures the energy information on the multiple carrier frequencies, and/or the access node A notifies the subordinate terminal to measure the energy information on the multiple carrier frequencies through the control message, and then feeds back to the access node A; the access node A Based on the above energy information, it is found that the carrier frequency 1 has a large interference, and the carrier frequency 2 has a small interference, so that the adjustment to the carrier frequency 2 is determined as the working carrier frequency; the access node A according to the service quality of the served terminal, and the previously received The measurement and reporting information of the service terminal determines the processing method for different terminals;
  • the access node A decides to let the terminal 1 follow the own access node for carrier frequency adjustment, the access node A sends the carrier frequency adjustment information to the terminal 1 through the dedicated signaling; after receiving the carrier frequency adjustment information, the terminal 1 receives the carrier frequency adjustment information.
  • the carrier frequency adjustment effective time information adjusts the working carrier frequency to the carrier frequency 2 at the corresponding time, and then the terminal 1 accesses the access node A using the carrier frequency 2, for example, after the uplink and downlink synchronization can be completed by using the contention-based random access. , start to restore the previous data connection and data transmission;
  • the access node A may request the terminal 2 to initiate a scan measurement of the neighboring access node, and then find a suitable neighboring access node such as access.
  • Node B serves as the target access node, and then the terminal switches to the target access node B.
  • the access node A can send the context information of the terminal 2 to the access node B to accelerate the terminal 2 Switch.
  • the access node A operates at carrier frequency 1 and serves a number of terminals, such as terminal 1, terminal 2, and the like.
  • the access node A measures the energy information on the multiple carrier frequencies, and/or the access node A notifies the subordinate terminal to measure the energy information on the multiple carrier frequencies through the control message, and then feeds back to the access node A; the access node A Based on the above energy information, it is found that the carrier frequency 1 has a large interference, and the carrier frequency 2 has a small interference, thereby determining to adjust to the carrier frequency 2 as the working carrier frequency.
  • Access node A broadcasts neighboring access The node information is sent to the terminal, and the served terminal is required to measure and report the measurement result. The access node A determines the processing mode of the different terminal according to the measurement result reported by the terminal.
  • the access node A decides to let the terminal 1 follow the own access node for carrier frequency adjustment, the access node A sends the carrier frequency adjustment information to the terminal 1 through the dedicated signaling, and the terminal 1 receives the carrier frequency adjustment information.
  • the carrier frequency adjustment effective time information adjusts the working carrier frequency to the carrier frequency 2 at the corresponding time, and then the terminal 1 accesses the access node A at the carrier frequency 2. For example, after the uplink and downlink synchronization can be completed by using the contention-based random access , start to restore the previous data connection and data transmission;
  • the access node A decides to switch the terminal 1 to another access node, the access node A finds a suitable neighboring access node, such as the access node B, as the target access node according to the measurement report of the terminal, and then initiates the handover actively.
  • the requesting terminal switches to the target access node B.
  • the access node A may send the context information of the terminal 1 to the access node B to accelerate the handover of the terminal 1.
  • a processing system for adjusting an carrier frequency of an access node comprising: an information sending unit and a processing unit; wherein
  • An information sending unit configured to send carrier frequency adjustment information to the processing unit
  • the processing unit is configured to perform corresponding processing according to the received carrier frequency adjustment information when receiving the carrier frequency adjustment information sent by the information sending unit to the terminal.
  • the corresponding processing according to the received carrier frequency adjustment information includes the following two specific implementations:
  • the processing unit is specifically configured to perform carrier frequency adjustment according to the carrier frequency adjustment information when determining a carrier frequency adjustment in a self-decision processing mode, and initiate a handover to another when determining to perform handover.
  • the operation of the access node is specifically configured to perform carrier frequency adjustment according to the carrier frequency adjustment information when determining a carrier frequency adjustment in a self-decision processing mode, and initiate a handover to another when determining to perform handover. The operation of the access node.
  • the information sending unit is further configured to: the processing mode of the decision processing unit is that the carrier frequency adjustment needs to be performed or needs to be switched.
  • the notification processing unit is configured according to the loading Frequency adjustment information for carrier frequency adjustment; when decision making When the mode is required to be switched, an instruction to switch the terminal to another access node is sent to the processing unit;
  • the processing unit is configured to receive, by the information sending unit, a notification that the carrier frequency adjustment is performed according to the carrier frequency adjustment information, perform carrier frequency adjustment according to the carrier frequency adjustment information, and send the information sending unit The instruction to switch the terminal to another access node to initiate the operation of switching the terminal to another access node is initiated.
  • the information sending unit is further configured to determine, according to energy information of each carrier frequency currently managed, that the carrier frequency needs to be adjusted.
  • the information sending unit is further configured to send the carrier adjustment information to the processing unit by means of broadcast or proprietary signaling.
  • the processing unit is further configured to: when the terminal initiates a handover to another access node, perform measurement on the neighboring access node, and send the measurement result of the neighboring access node to the information sending unit to receive the information.
  • the information sending unit is further configured to: when the processing mode of the decision is that the switching needs to be performed, the notification processing unit starts to perform measurement, and reports the measurement result, selects an appropriate target access node according to the measurement result, and sends the context information of the terminal to the The target access node, the notification processing unit performs handover to the target access node.
  • the processing unit is further configured to: determine, by the access node, the terminal that needs to perform handover, and initiate an operation to switch the terminal to another access node. In the case of the notification that the measurement is started by the information processing unit, the measurement result reported to the information transmitting unit is switched to the target access node according to the notification of the handover to the target access node by the information transmitting unit.
  • the above information sending unit may be installed at an access node, and the processing unit may be installed in the terminal.
  • the above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

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

Abstract

La présente invention concerne un procédé de traitement pour un nœud d'accès pour régler la fréquence porteuse, consistant en ce qui suit : un nœud d'accès envoie des informations de réglage de fréquence porteuse à un terminal ; et le terminal effectue un traitement correspondant selon les informations de réglage de fréquence porteuse reçues. L'invention concerne également un système de traitement pour un nœud d'accès pour régler la fréquence porteuse. La présente invention permet ainsi de résoudre les problèmes de déséquilibre de charge de la fréquence porteuse de fonctionnement et de brouillage intrafréquence par le réglage de la fréquence porteuse, améliorant ainsi la qualité générale de service du système.
PCT/CN2011/083578 2011-04-25 2011-12-06 Procédé et système de traitement de nœud d'accès pour régler la fréquence porteuse WO2012146030A1 (fr)

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CN2011101039607A CN102761907A (zh) 2011-04-25 2011-04-25 一种接入节点调整载频的处理方法及系统

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