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WO2016095389A1 - Procédé de radiomessagerie pour station de base, et station de base - Google Patents

Procédé de radiomessagerie pour station de base, et station de base Download PDF

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Publication number
WO2016095389A1
WO2016095389A1 PCT/CN2015/077126 CN2015077126W WO2016095389A1 WO 2016095389 A1 WO2016095389 A1 WO 2016095389A1 CN 2015077126 W CN2015077126 W CN 2015077126W WO 2016095389 A1 WO2016095389 A1 WO 2016095389A1
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Prior art keywords
paging
paging message
base station
message
target
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Ceased
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PCT/CN2015/077126
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English (en)
Chinese (zh)
Inventor
郑泽榕
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel

Definitions

  • the present invention relates to the field of communications, and in particular to a paging method and a base station of a base station.
  • the LTE (Long Term Evolution) system adopts a flat network structure. It includes both the evolution of wireless access technologies and the evolution of system architecture.
  • the LTE network includes an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and an Evolved Packet Core (EPC).
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • EPC Evolved Packet Core
  • the CSFB (Circuit Switched Fallback) fallback technology is used to implement voice support for the LTE network.
  • the voice service is basically the highest priority service in the user service. How to better improve the CSFB user experience in the early stage of the LTE network has become a major indicator for evaluating the new energy of the network.
  • CSFB is limited by the called paging success rate. If you want to improve CSFB performance, improving the CS paging success rate is the only way.
  • paging is divided into paging on the S1 interface and paging on the wireless interface. The specific paging procedure is as follows:
  • Paging is mainly used in the following three scenarios:
  • the MME Mobility Management Entity
  • S1AP Session Initiation Protocol
  • scenario 1 is discussed.
  • the eNB In the RRC idle state, after the eNB receives the paging message of the MME, the eNB checks which cells belong to the TA list and pages on the radio interfaces of the cells.
  • a Paging paging message signaling procedure is specified.
  • the MME sends a Paging message to the eNB, and the Paging message carries the paging service cause (CS/PS) for the eNB to page the UE.
  • CS/PS paging service cause
  • the embodiment of the invention provides a paging method and a base station of a base station, which can improve the paging success rate of the CS.
  • an embodiment of the present invention provides a paging method and a base station of a base station, including:
  • an embodiment of the present invention provides a paging method of a base station, including:
  • the base station determines whether the number of the current paging messages to be sent exceeds the upper limit of the paging message of the UE that the base station can carry in the current paging subframe, and obtains a determination result;
  • the base station selects a partial UE paging message as the target UE paging message from the current UE paging message to be sent, and the current paging message to be sent in the UE
  • the priority of the first UE paging message of the call type CS is higher than the priority of the second UE paging message of the paging type PS;
  • the base station sends the target UE paging message in the current paging subframe.
  • the step of the base station sending the target UE paging message in the current paging subframe includes:
  • the first modulation and coding policy MCS and the first coding rate are used in the target UE paging message. Converting the first UE paging message into a first air interface code stream, converting the second UE paging message in the target UE paging message into a first modulation and coding strategy MCS and a second coding rate Two air interface code stream;
  • the first coding rate is lower than the second coding rate; and/or the first modulation and coding strategy MCS is lower than the second modulation and coding policy MCS.
  • the step of the base station selecting a partial UE paging message as the target UE paging message from the current UE paging message to be sent includes:
  • the base station creates at least two paging queues, where the two paging queues include: a first paging queue with a paging type of CS and a second paging queue with a paging type of PS;
  • the base station discharges the paging message of the UE to be sent to the corresponding paging queue;
  • the base station selects, according to the priority of the two paging queues, a partial UE paging message from the two paging queues as a target UE paging message, where the priority of the first paging queue is greater than the foregoing The priority of the second paging queue.
  • the step of the base station sending the target UE paging message in the current paging subframe includes:
  • the base station When the target UE paging message includes the first UE paging message, the base station generates N air interface pages for the first UE paging message;
  • the base station sends the first UE paging message in N discontinuous reception periods DRX of the air interface, where N is the number of paging frames in the DRX cycle, and N is a natural number greater than 1.
  • the N is based on the following formula:
  • N min(T, nB);
  • T takes the minimum of the default discontinuous reception DRX parameter and the set DRX parameter of the UE
  • an embodiment of the present invention provides a base station, including:
  • the determining unit is configured to determine whether the number of the current paging message to be sent exceeds the upper limit of the paging message of the UE that the base station can carry in the current paging subframe, and obtain a determination result;
  • a selecting unit configured to: when the determining result is yes, the base station selects, as the target UE paging message, a partial UE paging message from the current paging message to be sent; In the call message, the priority of the first UE paging message with the paging type being CS is higher than the priority of the second UE paging message with the paging type being PS;
  • a sending unit configured to send the target UE paging message in the current paging subframe.
  • the sending unit includes:
  • a coding/modulation subunit configured to adopt a first modulation and coding strategy MCS and a first coding rate when the target UE paging message includes the first UE paging message and the second paging message
  • Translating in the target UE paging message, the first UE paging message into a first air interface code stream, and using the second modulation and coding policy MCS and the second coding rate, the first of the target UE paging messages
  • Two UE paging messages are converted to the second air a code stream; wherein the first coding rate is lower than the second coding rate; and/or the first modulation and coding strategy MCS is lower than the second modulation and coding strategy MCS;
  • a sending subunit configured to send the first air interface code stream and the second air interface code stream.
  • the selection unit includes:
  • Creating a sub-unit configured to create at least two paging queues, where the two paging queues include: a first paging queue with a paging type of CS and a second paging queue with a paging type of PS;
  • a queuing sub-unit configured to allocate, according to a paging type of the UE paging message, the current paging message to be sent to the corresponding paging queue;
  • Selecting a subunit configured to select, according to the priority of the two paging queues, a partial UE paging message from the two paging queues as a target UE paging message, and a priority of the first paging queue Greater than the priority of the second paging queue.
  • the sending unit includes:
  • Generating a subunit configured to generate, when the target UE paging message includes the first UE paging message, the first UE paging message generates N air interface pages;
  • the transmitting subunit is configured to send the first UE paging message in the N discontinuous reception periods DRX of the air interface, where N is the number of paging frames in the DRX cycle, and N is a natural number greater than 1.
  • the N is based on the following formula:
  • N min(T, nB);
  • T takes the minimum of the default discontinuous reception DRX parameter and the set DRX parameter of the UE
  • the CSFB paging message is preferentially guaranteed to achieve the purpose of improving the CS paging success rate, which indirectly improves the CSFB success rate.
  • FIG. 1 is a schematic flowchart of a paging method of a base station according to the present invention
  • FIG. 2 is a schematic diagram of connection of a base station according to the present invention.
  • FIG. 3 is a schematic flowchart of processing a paging message in an application scenario of the present invention
  • FIG. 4 is a schematic diagram of a physical layer identifying a paging message in an application scenario of the present invention
  • FIG. 5 is a schematic diagram of content carried by an S1 page in an application scenario of the present invention.
  • FIG. 6 is a schematic diagram of a paging message sent by a hollow interface of an application scenario of the present invention.
  • a method for paging a base station includes:
  • Step 11 The base station determines whether the number of the paging messages of the UE to be sent exceeds the upper limit of the paging message of the UE that the base station can carry in the current paging subframe, and obtains a determination result;
  • Step 12 When the judgment result is yes, the base station selects a partial UE paging message as the target UE paging message from the current UE paging message to be sent; the current UE paging message to be sent
  • the priority of the first UE paging message with the paging type being the CS is higher than the priority of the second UE paging message with the paging type being the PS;
  • Step 13 The base station sends the target UE paging message in the current paging subframe.
  • step 12 may include:
  • Step 121 The base station creates at least two paging queues, where the two paging queues include: a first paging queue with a paging type of CS and a second paging queue with a paging type of PS;
  • Step 122 The base station sends the current paging message of the UE to be sent to the corresponding paging queue according to the paging type of the paging message of the UE.
  • Step 123 The base station selects, according to the priority of the two paging queues, a partial UE paging message from the two paging queues as a target UE paging message, and the priority of the first paging queue Greater than the priority of the second paging queue.
  • step 13 may include:
  • Step 131A when the target UE paging message includes the first UE paging message and the second paging message, paging the target UE by using a first modulation and coding policy MCS and a first coding rate.
  • the first UE paging message in the message is converted into a first air interface code stream, and the second UE paging message in the target UE paging message is adopted by using a second modulation and coding policy MCS and a second coding rate. Converting to a second air interface code stream; wherein the first coding rate is lower than the second coding rate; and/or the first modulation and coding strategy MCS is lower than the second modulation and coding strategy MCS
  • Step 132A Send the first air interface code stream and the second air interface code stream.
  • step 13 may include:
  • Step 131B When the target UE paging message includes the first UE paging message, the base station generates N air interface pages for the first UE paging message.
  • Step 132B The base station sends the first UE paging message in N discontinuous reception periods DRX of the air interface, where N is the number of paging frames in the DRX cycle, and N is a natural number greater than 1.
  • the N is based on the following formula:
  • N min(T, nB);
  • T takes the minimum of the default discontinuous reception DRX parameter and the set DRX parameter of the UE
  • a base station includes:
  • the determining unit 21 is configured to determine whether the number of the current paging messages to be sent exceeds the upper limit of the paging message that the base station can carry in the current paging subframe, and obtain a determination result;
  • the selecting unit 22 is configured to: when the determining result is yes, the base station selects a partial UE paging message from the current paging message to be sent as a target UE paging message; the current UE to be sent Paging In the message, the priority of the first UE paging message whose paging type is CS is higher than the priority of the second UE paging message whose paging type is PS;
  • the sending unit 23 is configured to send the target UE paging message in the current paging subframe.
  • the selecting unit 22 includes:
  • the creating sub-unit 221 is configured to create at least two paging queues, where the two paging queues include: a first paging queue with a paging type of CS and a second paging queue with a paging type of PS;
  • the queuing sub-unit 222 is configured to allocate the current paging message of the UE to be sent to the corresponding paging queue according to the paging type of the paging message of the UE;
  • the selecting sub-unit 223 is configured to select, according to the priority of the two paging queues, a partial UE paging message from the two paging queues as a target UE paging message, where the first paging queue is prioritized The level is greater than the priority of the second paging queue.
  • the sending single 23 yuan includes:
  • the encoding/modulating sub-unit 231 is configured to adopt a first modulation and coding strategy MCS and a first coding rate when the target UE paging message includes the first UE paging message and the second paging message
  • the first UE paging message in the target UE paging message is converted into a first air interface code stream, and the second modulation and coding policy MCS and a second coding rate are used to describe the target UE paging message.
  • the sending subunit 232 is configured to send the first air interface code stream and the second air interface code stream.
  • the sending unit 23 includes:
  • a generating sub-unit 233 configured to generate, when the target UE paging message includes the first UE paging message, the first UE paging message generates N air interface pages;
  • the transmitting subunit 234 is configured to send the first UE paging message in the N discontinuous reception periods DRX of the air interface, where N is the number of paging frames in the DRX cycle, and N is a natural number greater than 1.
  • the N is based on the following formula:
  • N min(T, nB);
  • T takes the minimum of the default discontinuous reception DRX parameter and the set DRX parameter of the UE
  • This application scenario provides a method for solving the LTE self-organizing network to distinguish the type of the base station, and can be applied to the scheme of using the CSFB to support the voice service in the early stage of the LTE network in the wireless communication network field of the fourth generation mobile communication system.
  • the LTE base station intelligently distinguishes the paging service type to improve the paging success rate of the CSFB.
  • FIG. 3 is a schematic flowchart of a paging message processing in an application scenario of the present invention, which specifically includes the following steps:
  • step 31 it is determined whether smart paging is enabled.
  • step 32 is performed; otherwise, it jumps to step 36.
  • the intelligent paging configuration provided by the base station includes: 1 enabling switch; 2 priority level; 3 repeating scheduling number N; and the code rate of the MCS5CS paging message encoded by the 4CS paging message.
  • step 32 after the smart paging is enabled, the paging is classified and processed as follows.
  • 4 is a schematic diagram of a physical layer identification paging message in an application scenario of the present invention.
  • FIG. 5 is a schematic diagram of content carried by S1 paging in an application scenario of the present invention.
  • the base station identifies the paging type carried in the S1 paging message, and confirms whether the paging is a CS voice paging according to the CN Domain field. Specifically, the two paging processing queues, the CS paging queue, and the PS paging queue are created in the base station, and the paging of the UE sent by the S1 interface is discharged into the corresponding processing queue according to the service type.
  • step 33 when the CS is paged, the CS high priority processing queue is placed.
  • step 34 N corresponding air interface pages are generated.
  • the paging message of the CS paging queue is applied with a paging configuration that is repeated N times, and the paging message of the UE is sent in a period in which the air interface sends N DRXs, so as to improve the probability that the UE receives the paging message.
  • the protocol specifies that the timing of sending paging messages of each UE is specified, and the value of the sending frame number PF satisfies the following formula:
  • the value of the SFN (system frame number) in which the formula is satisfied is PF.
  • T:T takes the default DRX parameter of the UE and the minimum value of the specific DRX parameter.
  • the default DRX parameters are broadcast in the SI of the network, and the values are 32, 64, 128, 256, and unit radio frames.
  • the UE-specific DRX parameters are configured by the RRC message, and the value range is the same as the default DRX.
  • nB 4T, 2T, T, T/2, T/4, T/8, T/16, T/32, this parameter is broadcast in the broadcast message SI of the network.
  • N min(T, nB), which is the number of paging frames in the DRX cycle.
  • UE_ID IMSI mod 1024, IMSI is the unique international identity of the terminal, and IMSI takes a decimal number.
  • FIG. 6 is a schematic diagram of a paging message sent by a hollow interface of an application scenario of the present invention.
  • the DRX cycle is 32 frames, and the subframe for transmitting a page in each frame is the subframe No. 8.
  • the base station schedules the PF frame scheduling resource in consecutive N DRX cycles to send the CS paging message of the UE.
  • step 35 the CS paging dedicated MCS and the code rate generated code stream are applied. That is to say, for the paging message of the CS paging queue, the base station uses the lower-order MCS and the higher coding rate when converting to the air interface code stream, so as to improve the decoding success rate of the paging message by the UE.
  • the paging message air interface scheduling information is carried in the DCI of the PDCCH (Physical Downlink Control Channel) channel, and the paging message is coded and modulated and transmitted in the PDSCH (Physical Downlink Shared CHannel) channel in the LTE downlink frame.
  • the relationship between the PDCCH physical downlink control channel and the PDSCH physical downlink shared channel is shown in FIG. 3.
  • the DCI indicating the paging message in the PDCCH, the Modulation and Coding Scheme (MCS) 0, and the RB calculated by the DCI (Downlink Control Information) is calculated, and the code rate is after the table is checked.
  • MCS 4 carried by the ordinary broadcast DCI, combined with the RB allocated by the DCI, is 0.1 after the code rate is checked.
  • Step 36 when it is a normal paging, put it into a normal paging processing queue
  • Step 37 Generate a corresponding air interface page; that is, when the eNB sends a paging message associated with the UE, the eNB sends the paging message of the UE once in the PF frame in one DRX cycle of the air interface.
  • step 38 a code stream is generated according to the MCS and the code rate of the universal configuration.
  • step 39 when the air interface is congested, the CS paging message is sent preferentially.
  • the step is specifically: the protocol specifies that one paging subframe can only send one air interface paging message, and carries at most 16 UE paging information.
  • the transmission timing of more than 16 UEs after the calculation conflicts, and the UE paging that cannot be sent in the current period needs to be deferred until the subsequent DRX paging cycle is sent or Was directly discarded.
  • the base station preferentially transmits a paging message of the CS paging queue to avoid paging delay or paging message discarding due to congestion.
  • the present invention can improve the decoding success rate of the Paging message by the UE in the downlink coverage difference area;
  • the invention preferentially guarantees the transmission of the CSFB paging message when the network paging is congested
  • the present invention can provide a more flexible and efficient paging configuration scheme.
  • the present invention proposes an optimization of the existing paging processing mechanism of the base station, so as to achieve the purpose of improving the success rate of the CS paging, and indirectly improve the CSFB success rate.
  • the paging method and the base station of the base station provided by the embodiment of the present invention have the following beneficial effects: the UE that can improve the downlink coverage difference area can successfully decode the Paging message; when the network paging congestion occurs, the CSFB is preferentially guaranteed. Paging message transmission; the invention can provide a more flexible and effective paging configuration scheme; and optimize the existing paging processing mechanism of the base station to achieve the purpose of improving the CS paging success rate, and indirectly improve the CSFB success rate.

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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 radiomessagerie pour une station de base, et une station de base. Le procédé de radiomessagerie pour une station de base consiste en ce que : la station de base détermine si la quantité de messages de radiomessagerie d'UE à envoyer actuellement dépasse une limite supérieure de la quantité des messages de radiomessagerie d'UE qui peuvent être transportés par la station de base dans une sous-trame de radiomessagerie courante, et acquiert un résultat de détermination ; lorsque le résultat de la détermination est positif, la station de base sélectionne, parmi les messages de radiomessagerie d'UE à envoyer actuellement, certains messages de radiomessagerie d'UE en tant que messages de radiomessagerie d'UE cibles, dans les messages de radiomessagerie d'UE à envoyer actuellement, la priorité d'un premier message de radiomessagerie d'UE, dont le type de radiomessagerie est CS, est plus grande que la priorité d'un second message de radiomessagerie d'UE dont le type de radiomessagerie est PS ; et la station de base envoie les messages de radiomessagerie d'UE cibles dans la sous-trame de radiomessagerie courante. La présente invention peut améliorer le taux de réussite de la radiomessagerie CS.
PCT/CN2015/077126 2014-12-16 2015-04-21 Procédé de radiomessagerie pour station de base, et station de base Ceased WO2016095389A1 (fr)

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CN110831065B (zh) * 2020-01-09 2020-04-28 武汉慧联无限科技有限公司 一种拥塞控制方法和物联网平台

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