WO2013107154A1

WO2013107154A1 - Method and apparatus for configuring capability of machine type communication terminal

Info

Publication number: WO2013107154A1
Application number: PCT/CN2012/077740
Authority: WO
Inventors: 方惠英; 许进; 戴博; 左志松; 夏树强; 张峻峰
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-01-19
Filing date: 2012-06-28
Publication date: 2013-07-25
Also published as: CN103220660A; CN103220660B

Abstract

Disclosed are a method and apparatus for configuring capability of a machine type communication (MTC) terminal. A capability parameter of an MTC terminal is configured according to the bandwidth and a highest modulation mode supported by the MTC terminal; the size of a buffer of the MTC terminal is configured according to a parameter of the total number of buffer channel bits in the capability parameter. In the present invention, the receiving and sending bandwidth of the MTC terminal device is limited, and a maximum modulation order of the MTC terminal and the supported maximum number of HARQ processes are limited, so as to greatly reduce the total number of buffer channel bits of the MTC terminal and lower the buffer requirement on the MTC terminal, thereby greatly reducing the cost of the terminal and facilitating evolution of an MTC service from an GSM system to an LTE system.

Description

Method and device for configuring machine type communication terminal capability

The present invention relates to the field of digital communications, and in particular, to a terminal capability configuration method and apparatus for supporting a low-cost terminal of Long Term Evolution (LTE). Background technique

Machine to Machine (M2M) communication, also known as Machine Type Communication (MTC), is a networked application and service centered on intelligent interaction of machine terminals. M2M is the main application form of the Internet of Things at this stage. Achieving machine-to-machine communication means that devices or appliances that are not networked in the traditional sense, such as home appliances, security system equipment, factory equipment, medical equipment, etc., have networking and communication capabilities. For example, if the Internet of Things is used for data acquisition, it can be used in a variety of scenarios: power equipment operation monitoring, remote meter reading of power users, street light management, motor vehicle violation driving monitoring, hydrological monitoring, weather monitoring, environmental monitoring, automatic Ticket vending machine management, unattended monitoring, oilfield production monitoring, urban traffic intelligent management, other remote device management, and other remote data collection. It is conceivable that the number of IoT terminals will be quite large due to the huge number of machines in multiple scenarios.

At present, M2M technology has been supported by international manufacturers such as NEC, HP, CA, Intel, IBM, AT&T, Ericsson, Nokia and OMRON, and has been commercialized in some countries in Europe and Asia. Vodafone, Orange, AT&T and other European and American telecommunications giants are all ambitious about M2M business. In China, China Mobile, China Unicom, China Telecom and other mobile operators are the main promoters of M2M. In addition to traditional mobile operators in Europe and America, M2M mobile operators such as Aeris and Jasper Wireless have emerged for the M2M market.

The M2M devices deployed on the market are mainly based on the Global System of Mobile communication (GSM) system, and the equipment cost is low. In recent years, with people With the rapid development of data service demand, more and more mobile operators choose LTE as the evolution direction of future broadband wireless communication systems. In order to prevent the mobile operators supporting the MTC service from maintaining the GSM and LTE systems at the same time and bringing the cost of network maintenance, the existing GSM system-based M2M devices need to evolve to the LTE-based M2M devices.

At the 3GPP RAN #51 plenary session, Vodafone's proposal RP-110419 "MTC device migration from GSM" clearly addresses the need for low-cost LTE-based MTC devices. Vodafone believes that LTE-based M2M services will be more attractive in the future due to the high spectrum efficiency of LTE. At present, most M2M devices are based on GSM networks. Only the cost of LTE-M2M devices can be lower than that of GSM MTC terminals, and M2M services can be truly transferred from GSM to LTE. At the 3GPP RAN #53 plenary meeting, the RP-111112 Proposed SID: Provision of low-cost MTC UEs based on LTE is adopted. The minimum rate requirement for the LTE-based MTC device is 118.4 Kbps and 59.2 Kbps. Only the cost of LTE-M2M equipment can be lower than that of GSM MTC terminals, and M2M services can really be transferred from GSM to LTE.

The lower rate support requirements for MTC devices require the configuration of MTC terminals, which is an important method for currently reducing MTC terminals based on LTE systems. Summary of the invention

The present invention provides a terminal capability configuration method and apparatus for reducing MTC terminal cost in a cellular mobile system based on Orthogonal Frequency Division Multiplexing (OFDM) technology, which is used to promote the evolution of M2M services from the GSM system to the LTE system.

In order to achieve the object of the present invention, the present invention proposes the following technical solutions:

A machine type communication terminal capability configuration method, the method comprising:

The capability parameter of the MTC terminal is configured according to the bandwidth supported by the MTC terminal and the highest modulation mode. The capability parameters of the MTC terminal include at least: the number of downlink maximum service channel transmission block bits in a single transmission time interval, and the maximum downlink single in a single transmission time interval. Traffic channel transport block The number of bits, the number of uplink maximum traffic channel transport block bits in a single transmission time interval, the uplink maximum single traffic channel transport block number and the total cache channel bit number in a single transmission time interval;

The bandwidth supported by the MTC terminal is smaller than the transmission and reception bandwidth required by the conventional LTE terminal under a single carrier;

The buffer size of the MTC terminal is configured according to the total cache channel bit number parameter. Further, the capability parameters of the MTC terminal configured according to the bandwidth supported by the MTC terminal and the highest modulation mode are:

Configuring, according to the bandwidth supported by the MTC terminal and the highest downlink modulation mode, the number of downlink maximum traffic channel transport block bits and the downlink maximum single traffic channel transmission in a single transmission time interval of the MTC terminal in a single transmission time interval supported by the downlink Block number of bits;

Configuring, according to the bandwidth supported by the MTC terminal and the highest uplink modulation mode, the number of uplink maximum traffic channel transport block bits in the single transmission time interval supported by the uplink and the uplink maximum single traffic channel transmission in a single transmission time interval. The number of block bits.

Further, the total number of cache channel bits of the MTC terminal is configured to: configure a total number of cache channel bits of the MTC terminal according to the number of downlink maximum traffic channel transport block bits and the maximum number of HARQ processes in the single transmission time interval.

Further, the manner of configuring the total number of cache channel bits of the MTC terminal is: the total number of cache channel bits = 3 x the maximum number of HARQ processes, and the number of downlink maximum service channel transport block bits in a single transmission time interval;

The maximum number of HARQ processes is an integer greater than or equal to 1 and less than or equal to 8. Further, the bandwidth supported by the MTC terminal is less than or equal to 5 MHz, and the specific configuration is 1.4 MHz, 3 MHz or 5 MHz.

Further, the maximum modulation mode supported by the MTC terminal is a 16-phase quadrature amplitude modulation (QAM) or a quadrature phase shift keying signal (QPSK).

Further, the bandwidth supported by the MTC terminal is 1.4 MHz, and the downlink is the highest. In the case that the modulation mode is QPSK, the number of downlink maximum traffic channel transport block bits in a single transmission time interval and the number of downlink maximum single traffic channel transport block bits in a single transmission time interval are set to 936 bits or greater than 936 bits; The number of uplink maximum traffic channel transport block bits in the transmission time interval and the uplink maximum single traffic channel transport block bit number in a single transmission time interval are set to 936 bits or greater than 936 bits.

Further, when the bandwidth supported by the MTC terminal is 1.4 MHz and the highest modulation mode of the downlink is 16QAM, the number of downlink maximum traffic channel transmission block bits in the single transmission time interval and the downlink in a single transmission time interval The maximum single traffic channel transmission block number is set to 1800 bits or greater than 1800 bits; the uplink maximum traffic channel transmission block number in the single transmission time interval and the uplink maximum single traffic channel transmission block number in the single transmission time interval are set to 1800 bits. Bits are greater than 1800 bits.

The present invention also provides a device-type communication terminal capability configuration device, which is located at the MTC terminal, and includes: a capability parameter configuration module and a buffer configuration module;

a capability parameter configuration module, configured to configure a capability parameter of the MTC terminal according to a bandwidth supported by the MTC terminal and a highest modulation mode; the capability parameter of the MTC terminal includes at least: a downlink maximum service channel transmission block number of bits in a single transmission time interval The number of downlink maximum single-channel channel transmission block bits in a single transmission time interval, the number of uplink maximum traffic channel transmission block bits in a single transmission time interval, the maximum number of uplink single-traffic channel transmission block bits, and the total number of cache channel bits in a single transmission time interval The bandwidth supported by the MTC terminal is set to be smaller than the transmission and reception bandwidth required by the conventional LTE terminal under a single carrier;

And a buffer configuration module, configured to configure a buffer size of the MTC terminal according to the total cache channel bit number parameter.

Further, the capability parameter configuration module configures, according to the bandwidth supported by the MTC terminal and the highest downlink modulation mode, the number of downlink maximum traffic channel transport block bits and a single transmission of the MTC terminal in a single transmission time interval supported by the downlink. Maximum down time interval Single traffic channel transport block number of bits;

The capability parameter configuration module configures, according to the bandwidth supported by the MTC terminal and the highest uplink modulation mode, the number of uplink maximum traffic channel transmission block bits and the single transmission time interval of the MTC terminal in a single transmission time interval supported by the uplink. The maximum number of uplink single traffic channel transport block bits.

Further, the capability parameter configuration module configures the total number of cache channel bits of the MTC terminal according to the number of downlink maximum traffic channel transport block bits and the maximum number of HARQ processes in a single transmission time interval, and the configuration manner is:

The total number of cache channel bits = 3 χ maximum number of HARQ processes X The number of bits of the downlink maximum traffic channel transmission block in a single transmission time interval;

The maximum number of HARQ processes is an integer greater than or equal to 1 and less than or equal to 8. Further, the bandwidth supported by the MTC terminal is less than or equal to 5 MHz, and the specific configuration is 1.4 MHz, 3 MHz, or 5 MHz;

The maximum modulation mode supported by the MTC terminal is 16QAM or QPSK.

The terminal capability configuration method and apparatus for reducing the cost of the MTC terminal in the OFDM-based cellular mobile system according to the present invention configure the capability parameter of the MTC terminal according to the bandwidth supported by the MTC terminal and the highest modulation mode; according to the total cache channel in the capability parameter The bit number parameter is used to configure the buffer size of the MTC terminal. By limiting the receiving and transmitting bandwidth of the MTC terminal device, the invention limits the maximum modulation order of the MTC terminal and the maximum number of HARQ processes supported, which can greatly reduce the total number of cache channel bits of the MTC terminal and reduce the buffer requirement of the MTC terminal, thereby greatly Reduce the cost of the terminal and promote the evolution of the MTC service from the GSM system to the LTE system. DRAWINGS

1 is an implementation flow of a terminal capability configuration method according to the present invention;

2 is a method of a terminal accessing a wireless communication system configured by the terminal capability configuration method according to the present invention. detailed description

The present invention will be described in detail below with reference to the accompanying drawings.

The invention provides a terminal capability configuration method for supporting a low-cost MTC terminal in a cellular mobile system based on OFDM technology.

The bandwidth (receiving and transmitting bandwidth) of the MTC terminal is smaller than the receiving and transmitting bandwidth required by a conventional LTE terminal under a single carrier. The receiving and transmitting bandwidth required by the conventional LTE terminal under a single carrier is the maximum bandwidth required by the LTE system in the case of a single carrier, that is, 20 MHz.

The MTC terminal may be an MTC Device or an MTC UE or an MTC User Equipments

The bandwidth supported by the MTC terminal is less than or equal to 5 MHz, and may be specifically set to 1.4 MHz, 3 MHz or 5 MHz, preferably 1.4 MHz.

The MTC terminal does not support the 64QAM mode, and the maximum modulation mode supported is 16QAM or QPSK _0.

The maximum number of DL-SCH transport block bits received within a TTI and the downlink maximum single traffic channel in a single transmission time interval of the MTC terminal in a single transmission time interval supported by the downlink The Maximum number of bits of a DL-SCH transport block received within a TTI is determined according to the downlink highest modulation mode and the bandwidth supported by the MTC terminal. The maximum number of UL-SCH transport block bits received within a TTI and the uplink maximum single traffic channel within a single transmission time interval of the MTC terminal in a single transmission time interval supported by the uplink The Maximum number of bits of a UL-SCH transport block received within a TTI is determined according to the uplink highest modulation mode and the bandwidth supported by the MTC terminal. The total number of soft channel bits of the MTC terminal is determined by the number of downlink maximum traffic channel transport block bits and the maximum number of HARQ processes in a single transmission time interval.

The total number of cache channel bits = 3 χ maximum number of HARQ processes X The number of downlink maximum traffic channel transport block bits in a single transmission time interval. The maximum number of HARQ processes N is an integer greater than or equal to 1 and less than or equal to 8, preferably 1 , 2, 4 or 8.

Specifically, for the preferred MTC terminal supporting the 1.4 MHz bandwidth, in the case that the downlink maximum modulation mode is QPSK, the specific MTC terminal capability configuration is as shown in Table 1; in the case where the downlink maximum modulation mode is 16QAM. The specific MTC terminal capability configuration is shown in Table 2. Table 1.4 1.4MHz QPSK MTC Terminal Capability Configuration Table

Specifically, for the MTC terminal supporting the 5 MHz bandwidth, in the case where the downlink maximum modulation mode is QPSK, the specific MTC terminal capability configuration is as shown in Table 3. In the case where the downlink maximum modulation mode is 16QAM, the specific MTC is used. The terminal capability configuration is shown in Table 4. Table 3 5MHz QPSK MTC Terminal Capability Configuration Table

Table 4 5MHz 16QAM MTC Terminal Capability Configuration Table

FIG. 1 is a flowchart of an implementation process of a device-type communication terminal capability configuration method according to an embodiment of the present invention: Step 101: A capability parameter of an MTC terminal is determined according to a bandwidth supported by the MTC terminal and a highest modulation mode.

The capability parameters of the MTC terminal include at least: a maximum number of downlink service channel transmission block bits in a single transmission time interval, a downlink maximum single traffic channel transmission block number in a single transmission time interval, and an uplink maximum service channel transmission block in a single transmission time interval. The number of bits, the maximum number of uplink single traffic channel transport block bits and the total number of cache channel bits in a single transmission time interval.

The invention defines that the bandwidth (receiving and transmitting bandwidth) of the MTC terminal is smaller than the receiving and transmitting bandwidth required by a conventional LTE terminal under a single carrier. The receiving and transmitting bandwidth required by the conventional LTE terminal under a single carrier is the maximum bandwidth required by the LTE system in the case of a single carrier, that is, 20 MHz.

The bandwidth supported by the MTC terminal in the present invention is less than or equal to 5 MHz, and may be specifically set to 1.4 MHz, 3 MHz or 5 MHz, preferably 1.4 MHz. The maximum modulation mode supported by the MTC terminal is 16QAM or QPSK. The number of downlink maximum traffic channel transport block bits in the single transmission time interval supported by the downlink and the downlink maximum single traffic channel transport block bit number in a single transmission time interval according to the downlink highest modulation mode and the MTC terminal Bandwidth determination is supported (as shown in Table 1 to Table 4). The number of uplink maximum traffic channel transport block bits in the single transmission time interval supported by the uplink and the uplink maximum single traffic channel transport block bit number in a single transmission time interval according to the uplink highest modulation mode and the MTC terminal Support bandwidth determination (as shown in Table 1 to Table 4).

The total number of cache channel bits of the MTC terminal is determined by the number of downlink maximum traffic channel transport block bits and the maximum number of HARQ processes in a single transmission time interval.

The total number of cache channel bits = 3 x maximum number of HARQ processes X The number of downlink maximum traffic channel transport block bits in a single transmission time interval. The maximum number of HARQ processes N is an integer greater than or equal to 1 and less than or equal to 8, preferably 1 , 2, 4 or 8. The maximum number of HARQ processes is determined based on the need to specifically reduce the cost of the MTC terminal.

Step 102: Configure a buffer size of the MTC terminal according to the total cache channel bit number parameter, and use the buffer to decode the MTC service data.

Based on the implementation process of the device-type communication terminal capability configuration method provided by the embodiment of the present invention, the embodiment of the present invention further provides a corresponding implementation device, where the device includes: a capability parameter configuration module and a buffer configuration module;

a capability parameter configuration module, configured to configure a capability parameter of the MTC terminal according to a bandwidth supported by the MTC terminal and a highest modulation mode; the capability parameter of the MTC terminal includes at least: a downlink maximum service channel transmission block number of bits in a single transmission time interval The number of downlink maximum single-channel channel transmission block bits in a single transmission time interval, the number of uplink maximum traffic channel transmission block bits in a single transmission time interval, the maximum number of uplink single-traffic channel transmission block bits, and the total number of cache channel bits in a single transmission time interval The bandwidth supported by the MTC terminal is set to be smaller than conventional LTE The transmit and receive bandwidths required by the terminal under a single carrier;

The capability parameter configuration module configures, according to the bandwidth supported by the MTC terminal and the highest downlink modulation mode, the number of downlink maximum traffic channel transmission block bits and the single transmission time interval of the MTC terminal in a single transmission time interval supported by the downlink. The number of bits of the downlink maximum single traffic channel transmission block;

The capability parameter configuration module configures the total number of cache channel bits of the MTC terminal according to the number of downlink maximum traffic channel transmission block bits and the maximum number of HARQ processes in a single transmission time interval, and the configuration manner is:

The total number of cache channel bits = 3 x maximum number of HARQ processes X the number of bits of the downlink maximum traffic channel transport block in a single transmission time interval;

The maximum number of HARQ processes is an integer greater than or equal to 1 and less than or equal to 8. 2 is a flow chart of the MTC terminal accessing the wireless base station system according to the present invention.

Step 201: The MTC terminal initiates a network entry request to the base station.

Step 202: The base station sends a terminal capability query request to the MTC terminal.

Step 203: The MTC terminal sends a terminal capability parameter to the base station.

In a preferred embodiment of the present invention, a set of terminal capability parameters corresponding to the terminal classification level of the MTC terminal can be set, thereby reducing signaling overhead.

Step 204: The base station schedules the MTC terminal according to the terminal capability parameter fed back by the MTC terminal. The advantage of the present invention is that by limiting the receiving and transmitting bandwidth of the MTC terminal, limiting the maximum modulation order of the MTC terminal and the maximum number of HARQ processes supported, the number of bits of the total buffer channel of the MTC terminal can be flexibly reduced, and the buffer requirement of the MTC terminal is reduced. Thereby, the cost of the terminal is greatly reduced, and the evolution of the MTC service from the GSM system to the LTE system is promoted.

There are a variety of other embodiments of the present invention, and various modifications and changes can be made thereto in accordance with the present invention without departing from the spirit and scope of the invention. Changes and modifications are intended to be included within the scope of the appended claims.

Claims

A method for configuring a communication terminal capability of a machine type, the method comprising: configuring according to a bandwidth supported by a machine type communication (MTC) terminal and a highest modulation mode

The capability parameter of the MTC terminal; the capability parameter of the MTC terminal at least includes: a number of downlink maximum traffic channel transmission block bits in a single transmission time interval, a downlink maximum single traffic channel transmission block number in a single transmission time interval, and a single transmission time interval The number of uplink maximum traffic channel transport block bits, the maximum uplink single traffic channel transport block number and the total cache channel bit number in a single transmission time interval; the MTC terminal supports a bandwidth smaller than a conventional Long Term Evolution (LTE) terminal under a single carrier The supported transmit and receive bandwidths;

The buffer size of the MTC terminal is configured according to the total cache channel bit number parameter.

The method according to claim 1, wherein the capability parameters of the MTC terminal configured according to the bandwidth supported by the MTC terminal and the highest modulation mode are:

3. The method according to claim 2, wherein the configuration of the total number of cache channel bits of the MTC terminal is:

The total number of cache channel bits of the MTC terminal is configured according to the number of downlink maximum traffic channel transport block bits and the maximum hybrid automatic repeat (HARQ) process number in the single transmission time interval.

The method according to claim 3, wherein the manner of configuring the total number of cache channel bits of the MTC terminal is:

The total number of cache channel bits = 3 x maximum number of HARQ processes X single transmission interval The number of bits in the inner downlink maximum traffic channel transmission block;

The maximum number of HARQ processes is an integer greater than or equal to 1 and less than or equal to 8.

5. The method of claim 4, wherein

The bandwidth supported by the MTC terminal is less than or equal to 5 MHz, and the specific configuration is 1.4 MHz, 3 MHz or 5 MHz.

The method according to claim 5, wherein the maximum modulation mode supported by the MTC terminal is a 16-phase quadrature amplitude modulation (QAM) or a quadrature phase shift keying signal.

(QPSK).

7. The method of claim 6 wherein:

In the case that the bandwidth supported by the MTC terminal is 1.4 MHz and the highest modulation mode of the downlink is QPSK, the number of downlink maximum traffic channel transmission block bits in a single transmission time interval and the downlink maximum single service in a single transmission time interval The number of channel transmission block bits is set to 936 bits or greater than 936 bits; the number of uplink maximum traffic channel transmission block bits in the single transmission time interval and the number of uplink maximum single traffic channel transmission block bits in a single transmission time interval are set to 936 bits or greater 936 bits.

8. The method of claim 6 wherein:

In the case that the bandwidth supported by the MTC terminal is 1.4 MHz and the highest modulation mode of the downlink is 16QAM, the number of downlink maximum traffic channel transmission block bits in a single transmission time interval and the downlink maximum single service in a single transmission time interval. The number of channel transmission block bits is set to 1800 bits or greater than 1800 bits; the number of uplink maximum traffic channel transmission block bits in the single transmission time interval and the number of uplink maximum single traffic channel transmission block bits in a single transmission time interval are set to 1800 bits or greater 1800 bits.

9. A device-type communication terminal capability configuration device, the device comprising: a capability parameter configuration module and a buffer configuration module;

a capability parameter configuration module for using the bandwidth supported by the MTC terminal and the highest tone The capability parameter of the MTC terminal is configured in the system mode; the capability parameter of the MTC terminal includes at least: a number of downlink maximum traffic channel transmission block bits in a single transmission time interval, a downlink maximum single traffic channel transmission block number in a single transmission time interval, and a single transmission The maximum number of uplink traffic channel transport block bits in the time interval, the uplink maximum single traffic channel transport block bit number and the total cache channel bit number in a single transmission time interval; the bandwidth supported by the MTC terminal is set to be smaller than the conventional LTE terminal in a single carrier The transmit and receive bandwidths required to be supported;

10. Apparatus according to claim 9 wherein:

11. Apparatus according to claim 10 wherein:

12. Apparatus according to claim 10 wherein: The bandwidth supported by the MTC terminal is less than or equal to 5 MHz, and the specific configuration is 1.4 MHz, MHz or 5 MHz;

The maximum modulation mode supported by the MTC terminal is 16QAM or QPSK.