WO2015103952A1 - 物理信道配置方法以及基站和用户设备 - Google Patents

物理信道配置方法以及基站和用户设备 Download PDF

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Publication number
WO2015103952A1
WO2015103952A1 PCT/CN2015/070039 CN2015070039W WO2015103952A1 WO 2015103952 A1 WO2015103952 A1 WO 2015103952A1 CN 2015070039 W CN2015070039 W CN 2015070039W WO 2015103952 A1 WO2015103952 A1 WO 2015103952A1
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Prior art keywords
channel
physical
repetition level
configuration information
physical channel
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PCT/CN2015/070039
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English (en)
French (fr)
Inventor
王丰
刘仁茂
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夏普株式会社
王丰
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Priority to US15/110,373 priority Critical patent/US10555346B2/en
Publication of WO2015103952A1 publication Critical patent/WO2015103952A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1858—Transmission or retransmission of more than one copy of acknowledgement message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of wireless communication technologies. More specifically, the present invention relates to a physical channel configuration method and corresponding base station and user equipment.
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • OFDMA orthogonal frequency division multiple access
  • MIMO multiple antenna
  • the Release 10 version of 3GPP has been officially recognized and tested by the International Telecommunication Union as the fourth-generation global mobile communication standard LTE-Advanced.
  • carrier aggregation (CA) and relay technologies are introduced to enhance the uplink/downlink MIMO technology and support the deployment of heterogeneous networks (HetNet).
  • HetNet heterogeneous networks
  • 3GPP decided to introduce low-cost inter-machine communication technology (MTC) in LTE and its upgraded versions to migrate MTC services from current GSM network support.
  • MTC inter-machine communication technology
  • a low-cost MTC UE which supports MTC services in all duplex modes of existing LTE networks, and has such Performance: 1) single receive antenna; 2) downlink and uplink maximum transmission module (TBS) is 1000 bits; 3) downlink data channel baseband bandwidth reduced to 1.4 MHz, downlink control channel bandwidth and network side system The bandwidth is consistent, and the uplink channel bandwidth and the radio frequency portion of the downlink are consistent with the user equipment in the existing LTE network.
  • TBS downlink and uplink maximum transmission module
  • MTC is a data communication service that does not require human involvement.
  • Large-scale deployment of MTC user equipment can be used in security, tracking, billing, measurement, and consumer electronics.
  • Applications include video surveillance, supply chain tracking, smart meters, and remote monitoring.
  • MTC requires lower power consumption, supports lower data transmission rates and lower mobility.
  • Current LTE system The system is mainly for communication services for people (H2H). Therefore, the key to achieving the scale competitive advantage and application prospect of MTC services lies in the fact that LTE networks support low-cost MTC devices to work at low cost.
  • MTC equipment needs to be installed in the basement of a residential building or protected by a thick wall of insulating foil, metal window or traditional building, compared to conventional equipment terminals (such as mobile phones, tablets, etc.) in LTE networks.
  • the interface will obviously suffer from more severe penetration losses.
  • 3GPP decided to study the scheme design and performance evaluation of LTE network to provide additional 20dB coverage enhancement service for MTC equipment. It is worth noting that MTC equipment located in poor network coverage area has such characteristics: very low data transmission rate, very loose delay. Requirements, and limited mobility.
  • the LTE network can further optimize some signaling and/or channels to support the MTC.
  • 3GPP requires certain LTE network coverage enhancements for newly defined low cost UEs and other UEs running MTC services (eg, very relaxed latency requirements), where 15 dB of network coverage is provided for LTE Frequency Division Duplex (FDD) networks Enhanced.
  • FDD Frequency Division Duplex
  • the data channel is 1.4MHz (ie, 6 RBs)
  • the control channel can still access the entire downlink system bandwidth, and the RF link part remains unchanged. That is, the entire system bandwidth can be accessed; for the uplink, the baseband portion and the radio frequency portion remain unchanged.
  • the receiving antenna of the low-cost MTC user equipment is a single antenna, and the largest uplink transmission module and the downlink transmission module are both 1000 bits.
  • the coverage enhancement design and configuration of the physical layer channel (such as PDCCH/PDSCH/PUCCH/PUSCH) is a work that needs to be standardized.
  • the discussion of the 3GPP RAN1#74 conference after completing the initial access, any physical channel that needs to be repeatedly transmitted depends on the base station side.
  • the discussion of the 3GPP RAN1 #75 conference indicates that for the MTC user equipment in the coverage enhancement mode, its user-specific search space supports (E)PDCCH scheduling PDSCH and supports (E) PDCCH multiple repetition transmission levels.
  • the possible starting subframe of the (E) PDCCH repeated transmission should be limited to a specific subframe set, and the LTE does not support the repeated transmission of the periodic CSI in the PUCCH, and supports the repetition of the ACK/NACK in the PUCCH. Transmission, supporting multiple time domain repeat transmission levels of PDSCH/PUSCH.
  • the (E)PDCCH/PDSCH/PUCCH/PUSCH requires repeated transmission of multiple subframes, how to configure the initial subframe number of the coverage enhancement channel, and the repetition of the channel at this time.
  • the number of times, and how to determine the timing relationship between channels, is also a problem that needs to be solved.
  • the present invention proposes a physical layer channel (such as (E)PDCCH for MTC user equipment (including low-cost user equipment and other user equipments performing delay tolerant MTC services and requiring certain network coverage enhancement).
  • a physical layer channel such as (E)PDCCH for MTC user equipment (including low-cost user equipment and other user equipments performing delay tolerant MTC services and requiring certain network coverage enhancement).
  • the repetition level of the physical channel ((E)PDCCH/PDSCH/PUCCH/PUSCH) or the starting subframe sequence number is semi-statically configured according to the coverage enhancement level required by the MTC user equipment determined in the random access procedure. , or the number of repetitions, or the time-frequency resource used, or the timing relationship.
  • the repetition level of the semi-statically configured physical channel may configure the physical channel one by one, or may select one channel as a reference configuration and define a mapping relationship between other channels and the selected channel.
  • a method performed by a user equipment comprising: monitoring a physical channel, the physical channel repeating transmission at a certain repetition level; and receiving configuration information of a reconfiguration repetition level Where the initial repetition level is determined by the random access procedure.
  • the configuration information of the reconfiguration repetition level includes at least one of the following: a repetition level of the physical channel, a starting subframe sequence number, a repetition number, a used time-frequency resource, and a timing relationship.
  • the physical channel includes at least one of a physical downlink control channel (E) PDCCH, a physical downlink shared channel (PDSCH), a physical random access channel (PRACH), a physical uplink control channel (PUCCH), and a physical uplink shared channel (PUSCH).
  • E physical downlink control channel
  • PDSCH physical downlink shared channel
  • PRACH physical random access channel
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • corresponding configuration information is configured by radio resource control RRC signaling for each physical channel.
  • a specific physical channel is selected as a reference channel, configuration information of the reference channel is configured by RRC signaling, and a mapping relationship between the other physical channel and the reference channel is defined.
  • the reference channel comprises a Physical Downlink Control Channel (E) PDCCH.
  • E Physical Downlink Control Channel
  • the configuration information of the reconfiguration repetition level includes a repetition number, and the starting subframe sequence number is determined according to the number of repetitions and the number of subframes available for transmitting a physical channel in one transmission period.
  • the timing relationship of the physical channels is predetermined or semi-statically configured by RRC signaling.
  • a method performed by a base station comprising: transmitting a physical channel, the physical channel repeating transmission at a certain repetition level; and configuring configuration information for reconfiguring a repetition level, wherein The repetition level is determined by the random access procedure.
  • the configuration information of the reconfiguration repetition level includes at least one of the following: a repetition level of the physical channel, a starting subframe sequence number, a repetition number, a used time-frequency resource, and a timing relationship.
  • the physical channel includes at least one of a physical downlink control channel PDCCH, a physical downlink shared channel (PDSCH), a physical random access channel (PRACH), a physical uplink control channel (PUCCH), and a physical uplink shared channel (PUSCH).
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • PRACH physical random access channel
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • corresponding configuration information is configured by radio resource control RRC signaling for each physical channel.
  • a specific physical channel is selected as a reference channel, configuration information of the reference channel is configured by RRC signaling, and a mapping relationship between the other physical channel and the reference channel is defined.
  • the reference channel comprises a physical downlink control channel PDCCH.
  • the configuration information of the reconfiguration repetition level includes a repetition number, and the starting subframe sequence number is determined according to the number of repetitions and the number of subframes available for transmitting a physical channel in one transmission period.
  • the timing relationship of the physical channels is predetermined or semi-statically configured by RRC signaling.
  • a user equipment comprising: a monitoring unit configured to monitor a physical channel, the physical channel is repeatedly transmitted at a certain repetition level; and a receiving unit configured to receive reconfiguration The configuration information of the repetition level, wherein the initial repetition level is determined by the random access procedure.
  • the configuration information of the reconfiguration repetition level includes at least one of the following: a repetition level of the physical channel, a starting subframe sequence number, a repetition number, a used time-frequency resource, and a timing relationship.
  • the physical channel includes at least one of a physical downlink control channel PDCCH, a physical downlink shared channel (PDSCH), a physical random access channel (PRACH), a physical uplink control channel (PUCCH), and a physical uplink shared channel (PUSCH).
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • PRACH physical random access channel
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • corresponding configuration information is configured by radio resource control RRC signaling for each physical channel.
  • a specific physical channel is selected as a reference channel, configuration information of the reference channel is configured by RRC signaling, and a mapping relationship between the other physical channel and the reference channel is defined.
  • the reference channel comprises a physical downlink control channel PDCCH.
  • the configuration information of the reconfiguration repetition level includes a repetition number, and the starting subframe sequence number is determined according to the number of repetitions and the number of subframes available for transmitting a physical channel in one transmission period.
  • the timing relationship of the physical channels is predetermined or semi-statically configured by RRC signaling.
  • a base station comprising: a transmitting unit configured to transmit a physical channel, the physical channel being repeatedly transmitted at a certain repetition level; and a configuration unit configured to configure a reconfiguration repetition Level configuration information, where the initial repetition level is determined by the random access procedure.
  • the configuration information of the reconfiguration repetition level includes at least one of the following: a repetition level of the physical channel, a starting subframe sequence number, a repetition number, a used time-frequency resource, and a timing relationship.
  • the physical channel includes at least one of a physical downlink control channel PDCCH, a physical downlink shared channel (PDSCH), a physical random access channel (PRACH), a physical uplink control channel (PUCCH), and a physical uplink shared channel (PUSCH).
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • PRACH physical random access channel
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • corresponding configuration information is configured by radio resource control RRC signaling for each physical channel.
  • a specific physical channel is selected as a reference channel, configuration information of the reference channel is configured by RRC signaling, and a mapping relationship between the other physical channel and the reference channel is defined.
  • the reference channel comprises a physical downlink control channel PDCCH.
  • the configuration information of the reconfiguration repetition level includes a repetition number, and the starting subframe sequence number is determined according to the number of repetitions and the number of subframes available for transmitting a physical channel in one transmission period.
  • the timing relationship of the physical channels is predetermined or semi-statically configured by RRC signaling.
  • the resource utilization of the LTE supporting MTC user equipment can be improved, the spectrum/energy efficiency can be improved, and the time/frequency resource conflict between the cells can be reduced.
  • FIG. 1 is a schematic diagram showing a location distribution of an MTC user equipment in an LTE cell
  • FIG. 2 is a diagram showing the timing relationship of a physical channel according to the present invention.
  • FIG. 3 shows a flow chart of a method performed by a base station in accordance with an embodiment of the present invention
  • FIG. 4 shows a flow chart of a method performed by a user equipment in accordance with an embodiment of the present invention
  • Figure 5 shows a block diagram of a base station in accordance with an embodiment of the present invention
  • Figure 6 shows a block diagram of a user equipment in accordance with an embodiment of the present invention.
  • the coverage enhancement level of this area is the highest, and the uplink/downlink physical layer channel requires the most time-frequency resources.
  • FIG. 2 shows a timing relationship between physical channel (E) PDCCH, PDSCH, PUCCH, PUSCH in coverage enhancement mode.
  • the PUCCH transmits the ACK/NACK corresponding to the PDSCH, and its PUCCH transmission slot point is to be after the PDSCH transmission is completed.
  • the transmission and indication of the PUSCH are based on the configuration of the (E)PDCCH, so in timing, the PUSCH transmission is to be after the (E)PDCCH transmission is completed.
  • FIG. 3 shows a flow chart of a method performed by a base station in accordance with an embodiment of the present invention. As shown in FIG. 3, method 30 begins at step S310.
  • a physical channel is transmitted, the physical channel being repeatedly transmitted at a certain repetition level.
  • configuration information for reconfiguring the repetition level is configured, wherein the initial repetition level is determined by the random access procedure.
  • the configuration information of reconfiguring the repetition level may include at least one of the following: a repetition level of the physical channel, a starting subframe sequence number, a repetition number, and a use. Time-frequency resources, and timing relationships.
  • the physical channel may include at least one of a physical downlink control channel (E) PDCCH, a physical downlink shared channel (PDSCH), a physical random access channel (PRACH), a physical uplink control channel (PUCCH), and a physical uplink shared channel (PUSCH).
  • E physical downlink control channel
  • PDSCH physical downlink shared channel
  • PRACH physical random access channel
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • the corresponding configuration information is configured by radio resource control RRC signaling for each physical channel.
  • the specific physical channel is selected as the reference channel
  • the configuration information of the reference channel is configured by RRC signaling
  • the mapping relationship between the other physical channel and the reference channel is defined.
  • the reference channel may be a physical downlink control channel (E) PDCCH.
  • the configuration information of the physical downlink shared channel (PDSCH) may be configured according to any one of the following methods: semi-statically configured by RRC/MAC signaling, pre-defined mapping relationship with (E)PDCCH, or The configuration is performed by the downlink control information DCI.
  • the starting subframe sequence number may be determined according to the number of repetitions and the number of subframes available for transmitting a physical channel in one transmission period. For example, for a certain repetition level, it is assumed that the number of repetitions of the physical channel ((E)PDCCH/PDSCH/PUCCH/PUSCH) is N1, and it is assumed that N2 represents a subframe in which each radio frame can transmit a repeated physical channel in one transmission period.
  • whether the user equipment supporting the network coverage enhancement mode in a certain subframe may be preset or semi-statically configured.
  • the timing relationship of the physical channels is predetermined or semi-statically configured by RRC signaling. For example, for a certain repetition level, assuming that the last subframe of the (E)PDCCH repetition is x, then x+G1 is the starting subframe of the PDSCH repetition, x+G2 is the starting subframe of the PUCCH repetition, x+G3 The starting subframe that is repeated for the PUSCH. Where G1, G2, and G3 are the number of subframes, and the value is greater than or equal to 0. The values of G1, G2, and G3 may be predetermined or semi-statically configured by RRC signaling.
  • the default (E)PDCCH repeating start subframe is subframe #0, and subframe #0/4/5/9 always supports (E) PDCCH/PDSCH repeated transmission, while other subframes are supported depending on RRC.
  • method 40 begins at step S400.
  • a physical channel is monitored, the physical channel being repeatedly transmitted at a certain repetition level.
  • the physical channel may include a physical downlink control channel (E) PDCCH and a physical downlink shared channel PDSCH.
  • E physical downlink control channel
  • PDSCH physical downlink shared channel
  • the user equipment may monitor the reception and demodulation of the physical channel based on at least one of: a predefined mode, new content added by Msg4 in the random access procedure, random access Responding to the RID repetition number configuration information and the system information module SIB. Specifically, the user equipment needs to demodulate the (E)PDCCH and its scheduling before receiving the repetition level configuration signaling of a certain physical channel.
  • the PDSCH acquires radio link layer control (ie, RRC) signaling.
  • RRC radio link layer control
  • Manner 1 The user equipment monitors (E)PDCCH/PDSCH based on a predefined (E)PDCCH/PDSCH configuration mode to receive RRC signaling. Note that the (E)PDCCH/PDSCH configuration at this time may be determined according to the highest repetition level, or may be determined according to the repetition level selected by the user equipment in the initial random access procedure.
  • Manner 2 The user equipment monitors (E) PDCCH/PDSCH based on the new content added by Msg4 in the random access procedure.
  • Msg4 can be used to convey the configuration of the (E)PDCCH/PDSCH repetition level.
  • the user equipment can monitor (E) PDCCH/PDSCH by the repetition number configuration of the base station side random access response (RAR).
  • the RAR repetition number information may be added in a Medium Access Layer Control (MAC) PDU to convey a repetition level configuration of the physical layer channel.
  • MAC Medium Access Layer Control
  • (E) PDCCH/PDSCH configuration information may be added in a System Information Module (SIB).
  • SIB System Information Module
  • the user equipment in the coverage enhancement mode takes the same repetition level.
  • step S420 configuration information for reconfiguring the repetition level is received, wherein the initial repetition level is determined by the random access procedure. For example, if the user equipment reads the repetition level configuration signaling regarding the physical channel, the user equipment updates the repetition level configuration of the corresponding physical channel and can take the repetition level to monitor (E) PDCCH/PDSCH and other physical channels.
  • the configuration information for reconfiguring the repetition level may include at least one of the following: a repetition level of the physical channel, a starting subframe number, a repetition number, a used time-frequency resource, and a timing relationship.
  • method 40 ends at step S430.
  • FIG. 5 shows a block diagram of a base station in accordance with an embodiment of the present invention.
  • the base station 50 includes a transmitting unit 510 and a configuration unit 520.
  • Transmitting unit 510 transmits a physical channel that is repeatedly transmitted at a certain repetition level.
  • the configuration unit 520 configures configuration information for reconfiguring the repetition level, wherein the initial repetition level is determined by the random access procedure.
  • the configuration information of reconfiguring the repetition level may include at least one of the following: a repetition level of the physical channel, a starting subframe number, a repetition number, a used time-frequency resource, and a timing relationship.
  • the physical channel may include at least one of: a physical downlink control channel (E) PDCCH, a physical downlink shared channel (PDSCH), a physical random access channel (PRACH), and a physical random access channel (PR).
  • E physical downlink control channel
  • PDSCH physical downlink shared channel
  • PRACH physical random access channel
  • PR physical random access channel
  • configuration unit 520 can be configured to configure corresponding configuration information by radio resource control RRC signaling for each physical channel.
  • the configuration unit 520 may further select a specific physical channel as a reference channel, configure configuration information of the reference channel by using RRC signaling, and define a mapping relationship between the other physical channel and the reference channel.
  • the reference channel comprises a Physical Downlink Control Channel (E) PDCCH.
  • the configuration unit 520 determines the starting subframe sequence number based on the number of repetitions and the number of subframes available for transmitting a physical channel within one transmission period.
  • configuration unit 520 may pre-determine or semi-statically configure the timing relationships of the physical channels through RRC signaling.
  • FIG. 6 shows a block diagram of a user equipment in accordance with an embodiment of the present invention.
  • the user equipment 60 includes a monitoring unit 610 and a receiving unit 620.
  • the monitoring unit 610 monitors physical channels that are repeatedly transmitted at a certain repetition level.
  • the physical channel may include at least one of a physical downlink control channel PDCCH, a physical downlink shared channel (PDSCH), a physical random access channel (PRACH), a physical uplink control channel (PUCCH), and a physical uplink shared channel (PUSCH).
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • PRACH physical random access channel
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • the receiving unit 620 receives configuration information of the reconfiguration repetition level, wherein the initial repetition level is determined by the random access procedure.
  • the configuration information of reconfiguring the repetition level may include at least one of the following: a repetition level of the physical channel, a starting subframe number, a repetition number, a used time-frequency resource, and a timing relationship.
  • the present application implements a scheme for allowing a base station to transmit physical channel repetition configuration information of a serving cell and allowing user equipment to read in an coverage enhancement mode.
  • the technical solution proposed by the present application can improve resource utilization of LTE supporting MTC user equipment, improve spectrum/energy efficiency, and reduce time/frequency resource conflict between cells.
  • the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware.
  • the base station and various components within the user equipment in the above embodiments may be implemented by various devices including, but not limited to, analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, and programmable processing.
  • DSP digital signal processing
  • ASIC ASIC
  • FPGA Field Programmable Gate Array
  • CPLD Programmable Logic Device
  • base station refers to a mobile communication data and control switching center having a large transmission power and a relatively large coverage area, including resource allocation scheduling, data reception and transmission, and the like.
  • User equipment refers to a user mobile terminal, for example, a terminal device including a mobile phone, a notebook, etc., which can perform wireless communication with a base station or a micro base station.
  • embodiments of the invention disclosed herein may be implemented on a computer program product.
  • the computer program product is a product having a computer readable medium encoded with computer program logic that, when executed on a computing device, provides related operations to implement The above technical solution of the present invention.
  • the computer program logic When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention.
  • Such an arrangement of the present invention is typically provided as software, code and/or other data structures, or such as one or more, that are arranged or encoded on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk.
  • Software or firmware or such a configuration may be installed on the computing device such that one or more processors in the computing device perform the technical solutions described in the embodiments of the present invention.

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Abstract

本发明提供了一种由用户设备执行的方法，包括：监测物理信道，所述物理信道以某一重复等级进行重复发射；以及接收重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。所述物理信道的配置信息包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、时序关系。本发明还提供了一种由基站执行的方法以及相应的基站和用户设备。采用本发明，能够提高LTE支持MTC用户设备的资源利用率并改善频谱/能量效率，减少小区间的时间/频率资源冲突。

Description

物理信道配置方法以及基站和用户设备 技术领域
本发明涉及无线通信技术领域。更具体地，本发明涉及一种物理信道配置方法以及相应的基站和用户设备。
背景技术
第三代移动通信合作计划组织(3GPP)部署的长期演进项目(LTE)旨在提供日益多样化的未来移动通信服务，无线蜂窝通信日益成为大众生活和工作中不可或缺的一部分。在3GPP LTE的第一版(即Release 8)中，引入了正交频分多址(OFDMA)和多天线(MIMO)技术。3GPP的Release10版本经国际电信联盟的评估和测试，正式成为了第四代全球移动通信标准LTE-Advanced。在LTE-Advanced标准中，引入了载波聚合(CA)和中继技术，增强了上行/下行MIMO技术，同时支持异构网络(HetNet)的布署。
为了满足未来家庭设备通信的市场需求和规模庞大的物联网(IOT)部署，3GPP决定在LTE及其升级版本中引入低成本机器间通信技术(MTC)，将MTC服务由目前的GSM网络支持迁移至LTE网络支持，并定义一种新的用户设备类型，称之为低成本(Low-cost)MTC UE，该用户设备在现有LTE网络的所有双工模式中支持MTC服务，并具有这样的性能：1)单接收天线；2)下行和上行最大的传输模块(TBS)为1000比特；3)下行链路数据信道的基带带宽降低为1.4MHz，下行链路控制信道的带宽与网络侧系统带宽保持一致，上行链路信道带宽以及下行链路的射频部分与现有LTE网络中的用户设备保持一致。
MTC是一种不需要人为参与的数据通信服务。大规模的MTC用户设备部署，可以用于安全、跟踪、付账、测量以及消费电子等领域，具体涉及的应用包括视频监控、供货链跟踪、智能电表，远程监控等。MTC要求较低的功率消耗，支持较低的数据传输速率和较低的移动性。目前LTE系 统主要是针对人与人(H2H)的通信服务。因此，实现MTC服务的规模竞争优势及应用前景，关键环节在于LTE网络支持低成本的MTC设备能够低成本工作。
一些MTC设备需要安装在居民楼地下室或者由绝缘箔片、金属护窗或者传统建筑物的厚墙保护的位置，相比较LTE网络中常规设备终端(如手机，平板电脑等)，这些设备的空中接口将明显遭受更严重的穿透损失。3GPP决定研究LTE网络提供MTC设备附加20dB覆盖增强服务的方案设计与性能评估，值得注意的是，位于糟糕网络覆盖区域的MTC设备具有这样的特点：非常低的数据传输速率，非常宽松的延时要求，以及有限的移动性。针对MTC特点，LTE网络可以进一步优化一些信令和(或)信道用以支持MTC。3GPP要求为新定义的低成本UE以及其他运行MTC服务(如，非常宽松的延迟要求)的UE提供一定的LTE网络覆盖增强，其中，对于LTE频分双工(FDD)网络提供15dB的网络覆盖增强。另外，并不是所有的运用MTC服务的用户设备都需要相同网络覆盖增强。
对于新型低成本MTC设备类型，对于下行链路，在基带部分，数据信道为1.4MHz(即6个RB)，控制信道仍能接入整个下行系统带宽，而射频链路部分，仍保持不变，即能够接入整个系统带宽；对于上行链路，基带部分和射频部分均保持不变。另外低成本MTC用户设备的接收天线为单一天线，最大的上行传输模块和下行传输模块均为1000比特。
针对3GPP LTE用户设备运行MTC业务并处于覆盖增强模式下，物理层信道(如PDCCH/PDSCH/PUCCH/PUSCH)的覆盖增强设计与配置是一个需要标准化的工作。根据3GPP RAN1#74会议的讨论，在完成初始接入过后，任何一个需要重复传输的物理信道，其配置模式取决于基站端。3GPPRAN1#75会议的讨论指出，对于MTC用户设备处于覆盖增强模式，其用户专用搜索空间，支持(E)PDCCH调度PDSCH，支持(E)PDCCH多个重复传输等级。从用户设备的角度来看，(E)PDCCH重复传输的可能起始子帧应该被限制在特定子帧集，LTE不支持周期性CSI在PUCCH中的重复传输，支持ACK/NACK在PUCCH的重复传输，支持PDSCH/PUSCH的多个时域重复传输等级。
另外，处于覆盖增强模式的用户设备运行MTC应用业务时，(E)PDCCH/PDSCH/PUCCH/PUSCH需要多个子帧的重复传输，如何配置覆盖增强信道的起始子帧序号以及此时信道的重复次数，以及如何确定信道间时序关系，也是需要解决的问题。
发明内容
针对以上问题，基于LTE网络，本发明提出了用于MTC用户设备(包括低成本用户设备以及其他执行延迟容忍MTC服务并需要一定网络覆盖增强的用户设备)的物理层信道(如(E)PDCCH/PDSCH/PUCCH/PUSCH)的发送/接收机制的网络配置方法，以及信道之间的时序关系。
根据本发明，依据在随机接入过程确定的MTC用户设备所需的覆盖增强等级，半静态地配置物理信道((E)PDCCH/PDSCH/PUCCH/PUSCH)的重复等级、或起始子帧序号、或重复次数、或所使用的时频资源、或时序关系。半静态配置物理信道的重复等级可以逐个配置物理信道，也可以选择一个信道作为参考配置，并定义其他信道与该选定信道的映射关系。
具体地，根据本发明的一个方面，提供了一种由用户设备执行的方法，包括：监测物理信道，所述物理信道以某一重复等级进行重复发射；；以及接收重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。
在一个实施例中，重新配置重复等级的配置信息包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
在一个实施例中，所述物理信道包括以下至少一个：物理下行控制信道(E)PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
在一个实施例中，针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。
在一个实施例中，选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。
在一个实施例中，所述参考信道包括物理下行控制信道(E)PDCCH。
在一个实施例中，所述重新配置重复等级的配置信息包括重复次数，根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目来确定所述起始子帧序号。
在一个实施例中，物理信道的时序关系是预先确定的或通过RRC信令半静态地配置的。
根据本发明的另一个方面，提供了一种由基站执行的方法，包括：发射物理信道，所述物理信道以某一重复等级进行重复发射；以及配置重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。
在一个实施例中，重新配置重复等级的配置信息包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
在一个实施例中，物理信道包括以下至少一个：物理下行控制信道PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
在一个实施例中，针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。
在一个实施例中，选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。
在一个实施例中，参考信道包括物理下行控制信道PDCCH。
在一个实施例中，所述重新配置重复等级的配置信息包括重复次数，根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目来确定所述起始子帧序号。
在一个实施例中，物理信道的时序关系是预先确定的或通过RRC信令半静态地配置的。
根据本发明的另一个方面，提供了一种用户设备，包括：监测单元，被配置为监测物理信道，所述物理信道以某一重复等级进行重复发射；以及接收单元，被配置为接收重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。
在一个实施例中，重新配置重复等级的配置信息包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
在一个实施例中，物理信道包括以下至少一个：物理下行控制信道PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
在一个实施例中，针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。
在一个实施例中，选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。
在一个实施例中，参考信道包括物理下行控制信道PDCCH。
在一个实施例中，所述重新配置重复等级的配置信息包括重复次数，根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目来确定所述起始子帧序号。
在一个实施例中，物理信道的时序关系是预先确定的或通过RRC信令半静态地配置的。
根据本发明的另一个方面，提供了一种基站，包括：发射单元，被配置为发射物理信道，所述物理信道以某一重复等级进行重复发射；以及配置单元，被配置为配置重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。
在一个实施例中，重新配置重复等级的配置信息包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
在一个实施例中，物理信道包括以下至少一个：物理下行控制信道PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
在一个实施例中，针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。
在一个实施例中，选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。
在一个实施例中，参考信道包括物理下行控制信道PDCCH。
在一个实施例中，所述重新配置重复等级的配置信息包括重复次数，根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目来确定所述起始子帧序号。
在一个实施例中，物理信道的时序关系是预先确定的或通过RRC信令半静态地配置的。
采用本发明，能够提高LTE支持MTC用户设备的资源利用率并改善频谱/能量效率，减少小区间的时间/频率资源冲突。
附图说明
通过下文结合附图的详细描述，本发明的上述和其它特征将会变得更加明显，其中：
图1示出了LTE小区中MTC用户设备位置分布的示意图；
图2示出了根据本发明的物理信道的时序关系的示意图；
图3示出了根据本发明实施例的由基站执行的方法的流程图；
图4示出了根据本发明实施例的由用户设备执行的方法的流程图；
图5示出了根据本发明实施例的基站的方框图；以及
图6示出了根据本发明实施例的用户设备的方框图。
具体实施方式
以下将结合附图和具体实施例，对本发明所提出的针对(需要额外覆 盖增强或者不需要额外覆盖增强)低成本MTC用户设备以及其他支持延迟容忍的MTC服务并需要一定覆盖增强的用户设备的(E)PDCCH信息发送/接收方法、基站和用户设备(UE)进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施例。另外，为了简便起见，省略了对与本发明没有直接关联的公知技术的详细描述，以防止对本发明的理解造成混淆。
下文以LTE移动通信系统及其后续的演进版本作为示例应用环境，具体描述了根据本发明的多个实施例。然而，需要指出的是，本发明不限于以下实施例，而是可适用于更多其它的无线通信系统，例如今后的5G蜂窝通信系统。
图1给出了一个LTE小区中MTC用户设备的分布情况，该小区被划分为M＝4个覆盖增强等级区域，即CE1，…CE4，其中，处于小区边缘的MTC用户设备所经历的信道衰落最明显，该区域覆盖增强等级最高，其上/下行物理层信道所需的时频资源最多。具体地，(E)PDCCH/PDSCH/PUSCH的重复次数均与CEx有关。其中，x＝1，...，L，L为小区内划分的覆盖等级数目。
图2示出了在覆盖增强模式下，物理信道(E)PDCCH、PDSCH、PUCCH、PUSCH之间的时序关系。在(E)PDCCH的用户专用搜索空间USS，支持(E)PDCCH调度PDSCH资源，此时(E)PDCCH与其所调度的PDSCH分开传输，即，先完成(E)PDCCH的重复传输，然后再传输其调度的PDSCH。在上行链路中，PUCCH传输PDSCH对应的ACK/NACK，其PUCCH传输时隙点要在PDSCH传输完成之后。PUSCH的传输与指示，依据(E)PDCCH的配置，因此在时序上，PUSCH传输要在(E)PDCCH传输完成之后。
图3示出了根据本发明实施例的由基站执行的方法的流程图。如图3所示，方法30在步骤S310处开始。
在步骤S320处，发射物理信道，所述物理信道以某一重复等级进行重复发射。
在步骤S330处，配置重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。例如，重新配置重复等级的配置信息可以包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用 的时频资源、以及时序关系。
在一个实施例中，物理信道可以包括以下至少一个：物理下行控制信道(E)PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
(E)PDCCH/PDSCH/PUCCH/PUSCH信道的重复等级信令配置可以通过两种示例性方案来实现，见下表1：
Figure PCTCN2015070039-appb-000001
表1：物理信道的重复配置方案
即，在方案1中，针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。而在方案2中，选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。这样，用户设备就可通过参考信道的配置，推导出其他信道的重复等级配置及使用的时频资源。
例如，参考信道可以是物理下行控制信道(E)PDCCH。此时，可以根据以下任意一种方式来配置物理下行共享信道PDSCH的配置信息：通过RRC/MAC信令半静态地进行配置、预先定义与(E)PDCCH的映射关系、或 者通过下行控制信息DCI进行配置。
在一个实施例中，可以根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目，确定所述起始子帧序号。例如，针对某一重复等级，假设物理信道((E)PDCCH/PDSCH/PUCCH/PUSCH)的重复次数为N1，并且假设N2表示在一个传输周期内每个无线帧可以传输重复物理信道的子帧的数目，则物理信道的起始子帧位于无线帧SFN mod(ceiling(N1/N2))＝＝0内的子帧序号k1～kn(其中n可以取1)，其中子帧k1～kn可以是固定的，也可以是通过RRC信令半静态配置的。另外，某一子帧是否支持网络覆盖增强模式的用户设备，可以是预先设定也可以半静态地配置。
在一个实施例中，物理信道的时序关系是预先确定的或通过RRC信令半静态地配置的。例如，对于某一重复等级，假定(E)PDCCH重复的最后一个子帧为x，那么x+G1为PDSCH重复的起始子帧，x+G2为PUCCH重复的起始子帧，x+G3为PUSCH重复的起始子帧。其中，G1、G2、G3为子帧的数目，取值大于或等于0。G1、G2、G3的值可以预先确定，也可以通过RRC信令半静态地配置。默认的(E)PDCCH重复的起始子帧为子帧#0，子帧#0/4/5/9始终支持(E)PDCCH/PDSCH的重复传输，而其他子帧是否支持则取决于RRC信令的半静态配置，或者预先确定。
最后，方法30在步骤S340处结束。
图4示出了根据本发明实施例的由用户设备执行的方法的流程图。如图4所示，方法40在步骤S400处开始。
在步骤S410处，监测物理信道，所述物理信道以某一重复等级进行重复发射。
在一个实施例中，物理信道可以包括物理下行控制信道(E)PDCCH和物理下行共享信道PDSCH。在接收到RRC信令配置物理信道重复等级之前，用户设备可以基于以下至少一个来监控物理信道的接收与解调：预先定义的模式、随机接入过程中的Msg4添加的新内容、随机接入响应RAR的重复次数配置信息以及系统信息模块SIB。具体说来，在接收到某一物理信道的重复等级配置信令之前，用户设备需要解调(E)PDCCH及其调度的 PDSCH来获取无线链路层控制(即RRC)信令。具体方式如下：
方式一：用户设备基于预先定义的(E)PDCCH/PDSCH配置模式来监控(E)PDCCH/PDSCH，以接收RRC信令。注意，此时的(E)PDCCH/PDSCH配置可以根据最高的重复等级，也可以根据用户设备在初始随机接入过程中选定的重复等级来确定。
方式二：用户设备基于随机接入过程中的Msg4添加的新内容来监控(E)PDCCH/PDSCH。Msg4可用来传递(E)PDCCH/PDSCH重复等级的配置。
方式三：用户设备可以通过基站端随机接入响应(RAR)的重复次数配置来监控(E)PDCCH/PDSCH。RAR重复次数信息可以添加在媒体接入层控制(MAC)的PDU内，用来传递物理层信道的重复等级配置。
方式四：(E)PDCCH/PDSCH的配置信息可以添加在系统信息模块(SIB)中。在同一个小区内，处于覆盖增强模式的用户设备采取相同的重复等级。
在步骤S420处，接收重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。例如，如果用户设备读取到关于物理信道的重复等级配置信令，那么用户设备更新相应物理信道的重复等级配置，并可以采取该重复等级来监控(E)PDCCH/PDSCH以及其他物理信道。重新配置重复等级的配置信息可以包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
最后，方法40在步骤S430处结束。
图5示出了根据本发明实施例的基站的方框图。如图5所示，基站50包括发射单元510和配置单元520。
发射单元510发射物理信道，所述物理信道以某一重复等级进行重复发射。
配置单元520配置重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。例如，重新配置重复等级的配置信息可以包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
在一个实施例中，物理信道可以包括以下至少一个：物理下行控制信道(E)PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物 理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
在一个实施例中，配置单元520可以被配置为：针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。
备选地，配置单元520还可以选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。优选地，参考信道包括物理下行控制信道(E)PDCCH。
在一个实施例中，配置单元520根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目，确定所述起始子帧序号。
在一个实施例中，配置单元520可以预先确定或通过RRC信令半静态地配置物理信道的时序关系。
图6示出了根据本发明实施例的用户设备的方框图。如图6所示，用户设备60包括监测单元610和接收单元620。
监测单元610监测物理信道，所述物理信道以某一重复等级进行重复发射。该物理信道可以包括以下至少一个：物理下行控制信道PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
接收单元620接收重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。例如，重新配置重复等级的配置信息可以包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
本申请实现了一种允许基站发送服务小区的物理信道重复配置信息以及允许用户设备在覆盖增强模式下的读取的方案。采用本申请提出的技术方案，能够提高LTE支持MTC用户设备的的资源利用率并改善频谱/能量效率，减少小区间的时间/频率资源冲突。
应该理解，本发明的上述实施例可以通过软件、硬件或者软件和硬件两者的结合来实现。例如，上述实施例中的基站和用户设备内部的各种组件可以通过多种器件来实现，这些器件包括但不限于：模拟电路器件、数字电路器件、数字信号处理(DSP)电路、可编程处理器、专用集成电路 (ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(CPLD)，等等。
在本申请中，“基站”是指具有较大发射功率和较广覆盖面积的移动通信数据和控制交换中心，包括资源分配调度、数据接收发送等功能。“用户设备”是指用户移动终端，例如包括移动电话、笔记本等可以与基站或者微基站进行无线通信的终端设备。
此外，这里所公开的本发明的实施例可以在计算机程序产品上实现。更具体地，该计算机程序产品是如下的一种产品：具有计算机可读介质，计算机可读介质上编码有计算机程序逻辑，当在计算设备上执行时，该计算机程序逻辑提供相关的操作以实现本发明的上述技术方案。当在计算系统的至少一个处理器上执行时，计算机程序逻辑使得处理器执行本发明实施例所述的操作(方法)。本发明的这种设置典型地提供为设置或编码在例如光介质(例如CD-ROM)、软盘或硬盘等的计算机可读介质上的软件、代码和/或其他数据结构、或者诸如一个或多个ROM或RAM或PROM芯片上的固件或微代码的其他介质、或一个或多个模块中的可下载的软件图像、共享数据库等。软件或固件或这种配置可安装在计算设备上，以使得计算设备中的一个或多个处理器执行本发明实施例所描述的技术方案。
尽管以上已经结合本发明的优选实施例示出了本发明，但是本领域的技术人员将会理解，在不脱离本发明的精神和范围的情况下，可以对本发明进行各种修改、替换和改变。因此，本发明不应由上述实施例来限定，而应由所附权利要求及其等价物来限定。

Claims (32)

  1. 一种由用户设备执行的方法，包括：
    监测物理信道，所述物理信道以某一重复等级进行重复发射；以及
    接收重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。
  2. 根据权利要求1所述的方法，其中，所述重新配置重复等级的配置信息包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
  3. 根据权利要求1所述的方法，其中，所述物理信道包括以下至少一个：物理下行控制信道PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
  4. 根据权利要求1所述的方法，其中，针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。
  5. 根据权利要求1所述的方法，其中，选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。
  6. 根据权利要求5所述的方法，其中，所述参考信道包括物理下行控制信道PDCCH。
  7. 根据权利要求1所述的方法，其中，所述重新配置重复等级的配置信息包括重复次数，根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目来确定所述起始子帧序号。
  8. 根据权利要求1所述的方法，其中，物理信道的时序关系是预先确定的或通过RRC信令半静态地配置的。
  9. 一种由基站执行的方法，包括：
    发射物理信道，所述物理信道以某一重复等级进行重复发射；以及
    配置重新配置重复等级的配置信息，其中，初始重复等级由随机接入 过程所确定。
  10. 根据权利要求9所述的方法，其中，所述重新配置重复等级的配置信息包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
  11. 根据权利要求9所述的方法，其中，所述物理信道包括以下至少一个：物理下行控制信道PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
  12. 根据权利要求9所述的方法，其中，针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。
  13. 根据权利要求9所述的方法，其中，选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。
  14. 根据权利要求13所述的方法，其中，所述参考信道包括物理下行控制信道PDCCH。
  15. 根据权利要求9所述的方法，其中，所述重新配置重复等级的配置信息包括重复次数，根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目来确定所述起始子帧序号。
  16. 根据权利要求9所述的方法，其中，物理信道的时序关系是预先确定的或通过RRC信令半静态地配置的。
  17. 一种用户设备，包括：
    监测单元，被配置为监测物理信道，所述物理信道以某一重复等级进行重复发射；以及
    接收单元，被配置为接收重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。
  18. 根据权利要求17所述的用户设备，其中，所述重新配置重复等级的配置信息包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
  19. 根据权利要求17所述的用户设备，其中，所述物理信道包括以下 至少一个：物理下行控制信道PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
  20. 根据权利要求17所述的用户设备，其中，针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。
  21. 根据权利要求17所述的用户设备，其中，选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。
  22. 根据权利要求21所述的用户设备，其中，所述参考信道包括物理下行控制信道PDCCH。
  23. 根据权利要求17所述的用户设备，其中，所述重新配置重复等级的配置信息包括重复次数，根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目来确定所述起始子帧序号。
  24. 根据权利要求17所述的用户设备，其中，物理信道的时序关系是预先确定的或通过RRC信令半静态地配置的。
  25. 一种基站，包括：
    发射单元，被配置为发射物理信道，所述物理信道以某一重复等级进行重复发射；以及
    配置单元，被配置为配置重新配置重复等级的配置信息，其中，初始重复等级由随机接入过程所确定。
  26. 根据权利要求25所述的基站，其中，所述重新配置重复等级的配置信息包括以下至少一种：物理信道的重复等级、起始子帧序号、重复次数、使用的时频资源、以及时序关系。
  27. 根据权利要求25所述的基站，其中，所述物理信道包括以下至少一个：物理下行控制信道PDCCH、物理下行共享信道PDSCH、物理随机接入信道PRACH、物理上行控制信道PUCCH、以及物理上行共享信道PUSCH。
  28. 根据权利要求25所述的基站，其中，针对每一个物理信道，通过无线电资源控制RRC信令来配置相应的配置信息。
  29. 根据权利要求25所述的基站，其中，选择特定的物理信道作为参考信道，通过RRC信令来配置所述参考信道的配置信息，并且定义其他物理信道与所述参考信道的映射关系。
  30. 根据权利要求29所述的基站，其中，所述参考信道包括物理下行控制信道PDCCH。
  31. 根据权利要求25所述的基站，其中，所述重新配置重复等级的配置信息包括重复次数，根据所述重复次数以及一个传输周期内可用于传输物理信道的子帧的数目来确定所述起始子帧序号。
  32. 根据权利要求25所述的基站，其中，物理信道的时序关系是预先确定的或通过RRC信令半静态地配置的。
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