Transmission method and reception method of downlink signal and channel, terminal thereof, and base station thereof

• US 9,801,171 B2
• Filed: 10/02/2013
• Issued: 10/24/2017
• Est. Priority Date: 10/02/2012
• Status: Active Grant

• Current Assignee: Industry-University Cooperation Foundation Hanyang University
• Original Assignee: Industry-University Cooperation Foundation Hanyang University
• Inventors: Kim, Sun Woo
• Primary Examiner(s): CATTUNGAL, AJAY P
• Application Number:
  US14/433,004
• Publication Number:
  US 20150304994A1
• Time in Patent Office: 1,483 Days
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention relates to a method for transmitting and receiving downlink signal and channel, a terminal therefor and a base station therefor, the method comprising a method for a terminal to transceiver an aperiodic sounding reference signal comprising the steps of: receiving, via a higher layer signaling, two or more parameters for determining a time-frequency resource with which aperiodic sounding signal is transmitted; receiving, via PDCCH and/or EPDCCH, an index designating a parameter set comprising a part of the parameters; receiving, via PDCCH and/or EPDCCH, a signal triggering the aperiodic sounding reference signal; and transmitting the aperiodic sounding reference signal by frequency-hopping to a part of the frequency region within the overall frequency range of interest, frequency hopping being by means of the time-frequency resource corresponding to the parameter received via the higher layer signaling and the parameter included in the parameter set received via the PDCCH and/or the EPDCCH.

Claims

1. A method of transmitting an aperiodic sounding reference signal by a user equipment (UE), the method comprising:

receiving, through higher layer signaling, two or more parameters for determining a time-frequency resource with which an aperiodic sounding signal is transmitted, the two or more parameters including a virtual cell identifier parameter;

receiving, through at least one of a Physical Downlink Control Channel (PDCCH) and an Enhanced Physical Downlink Control Channel (EPDCCH), an index designating a parameter set including a part of the parameters;

receiving, through at least one of the PDCCH and the EPDCCH, a signal triggering the aperiodic sounding reference signal; and

transmitting the aperiodic sounding reference signal by frequency-hopping to a part of a frequency region within an entire frequency bandwidth of interest, by the time-frequency resource according to the two or more parameters received through the higher layer signaling and the parameter included in the parameter set received through at least one of the PDCCH and the EPDCCH.

2. The method of claim 1, wherein in the transmitting of the aperiodic sounding reference signal by frequency-hopping to the part of the frequency region within the entire frequency bandwidth, the aperiodic sounding reference signal is transmitted to the part of the frequency region one time.

3. The method of claim 1, wherein in the transmitting of the aperiodic sounding reference signal by frequency-hopping to the part of the frequency region within the entire frequency bandwidth, the aperiodic sounding reference signal is independently transmitted, through a Physical Uplink Shared Channel (PUSCH) and a Physical Uplink Control Channel (PUCCH), to a base station, which is different from a base station having received the parameter.

4. A method of receiving an aperiodic sounding reference signal by a base station, the method comprising:

transmitting, through higher layer signaling, two or more parameters including a virtual cell identifier parameter for determining a time-frequency resource with which an aperiodic sounding reference signal is transmitted;

transmitting, through at least one of a PDCCH and an EPDCCH, an index which designates a parameter set including a part of the parameters;

transmitting, through at least one of the PDCCH and the EPDCCH, a signal which triggers the aperiodic sounding reference signal; and

receiving the aperiodic sounding reference signal by frequency-hopping to a part of a frequency region within an entire frequency bandwidth of interest, by the time-frequency resource according to the parameter received through the higher layer signaling and the parameter included in the parameter set received through at least one of the PDCCH and the EPDCCH.

5. A method of transmitting a control channel located in a data region by a base station, the method comprising:

sequentially mapping an index of an Enhanced Resource Element Group (EREG) to resource elements except for resource elements for a DeModulation Reference Signal (DM-RS) in a time order on the basis of a frequency priority in each physical resource block pair for each sub-frame, forming one Enhanced Control Channel Element (ECCE) using 4 or 8 EREGs from one physical resource block pair or two or more physical resource block pairs, and allocating a downlink control channel located in the data region, which is configured by 1, 2, 4, 8 or 16 ECCEs; and

transmitting the downlink control channel located in the data region, to a base station.

6. The method of claim 5, wherein the index of the EREG corresponds to EREG#0 to 15, when the ECCE is configured by 4 EREGs, the EREGs are grouped into an EREG group #0 {EREG#0, 4, 8, 12}, an EREG group #1 {EREG#1, 5, 9, 13}, an EREG group #2 {EREG#2, 6, 10, 14}, and an EREG group #3 {EREG#3, 7, 11, 15}, and one ECCE is configured by one of the EREG groups #0 to #3, and when the ECCE is configured by 8 EREGs, the EREGs are grouped into an EREG group #0 {EREG#0, 2, 4, 6, 8, 10, 12, 14} and an EREG group #1 {EREG#1, 3, 5, 7, 9, 11, 13, 15}, and one ECCE is configured by one of the EREG groups #0 to #1.

7. A method of receiving a control channel located in a data region by a User Equipment (UE), the method comprising:

sequentially mapping an index of an EREG to resource elements except for resource elements for a DeModulation Reference Signal (DM-RS) in a time order on the basis of a frequency priority in each physical resource block pair for each sub-frame, forming one Enhanced Control Channel Element (ECCE) using 4 or 8 Enhanced Resource Element Groups (EREGs) from one physical resource block pair or two or more physical resource block pairs, and receiving a downlink control channel located in the data region, which is configured by 1, 2, 4, 8 or 16 ECCEs; and

acquiring control information from the downlink control channel located in the data region.

8. The method of claim 7, wherein the index of the EREG corresponds to EREG#0 to 15, when the ECCE is configured by 4 EREGs, the EREGs are grouped into an EREG group #0 {EREG#0, 4, 8, 12}, an EREG group #1 {EREG#1, 5, 9, 13}, an EREG group #2 {EREG#2, 6, 10, 14}, and an EREG group #3 {EREG#3, 7, 11, 15}, and one ECCE is configured by one of the EREG groups #0 to #3, and when the ECCE is configured by 8 EREGs, the EREGs are grouped into an EREG group #0 {EREG#0, 2, 4, 6, 8, 10, 12, 14} and an EREG group #1 {EREG#1, 3, 5, 7, 9, 11, 13, 15}, and one ECCE is configured by one of the EREG groups #0 to #1.

9. A method of indicating a resource configuration of an Enhanced Physical Downlink Control Channel (EPDCCH) set of control information allocated to a data region in a cellular telecommunications network, the method comprising:

transmitting, from a cellular base station, an RF signal indicating a value of N in N Physical Resource Block (PRB) pairs constituting the EPDCCH set, to a specific User Equipment (UE); and

transmitting, from the cellular base station to the specific UE, an RF signal indicating a combination index r in an equation

10. The method of claim 9, wherein the EPDCCH set forms one enhanced control channel element (ECCE) by 4 or 8 Enhanced Resource Element Groups (EREGs) from one physical resource block pair or two or more physical resource block pairs.