US20200329458A9 - Method of error recovery in transmitting and receiving voice service in packet based mobile communication systems - Google Patents
Method of error recovery in transmitting and receiving voice service in packet based mobile communication systems Download PDFInfo
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- US20200329458A9 US20200329458A9 US16/015,397 US201816015397A US2020329458A9 US 20200329458 A9 US20200329458 A9 US 20200329458A9 US 201816015397 A US201816015397 A US 201816015397A US 2020329458 A9 US2020329458 A9 US 2020329458A9
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- data
- terminal
- control information
- base station
- radio resource
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- H04W72/042—
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- 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
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- 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
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H04W72/0413—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- 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
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- 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
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- 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
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- 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
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H04W72/1289—
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- 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
Definitions
- the present invention relates to a method of transmitting and receiving data in a packet based mobile communication system, and more particularly, to a method of re-covering from a reception error of a control message, which occurs when transmitting and receiving data using a persistent allocation scheme, in order to effectively support a voice service between a base station and a mobile terminal in a next generation packet mobile communication system, which is under discussion for a standardization.
- a mobile communication system generally includes a base station constituting a cell, and a mobile terminal used by a user.
- a plurality of mobile terminals may transmit and receive packet data to and from the base station via a radio channel.
- An aspect of the present invention provides a method of effectively controlling an activation and a deactivation of a persistent allocation scheme when transmitting and receiving packet data using the persistent allocation scheme, and a method of transmitting and receiving a control message for an error recovery.
- a base station including: a radio resource allocation unit to allocate a radio resource to a terminal; a control information generation unit to generate control information based on the allocated radio resource; a transmitter to transmit the control information to the terminal; and a receiver to receive an acknowledgement (ACK) message with respect to the control information.
- a radio resource allocation unit to allocate a radio resource to a terminal
- a control information generation unit to generate control information based on the allocated radio resource
- a transmitter to transmit the control information to the terminal
- a receiver to receive an acknowledgement (ACK) message with respect to the control information.
- ACK acknowledgement
- a terminal including: a receiver to receive, from a base station, control information associated with data; and a transmitter to transmit, to the base station, an ACK message with respect to the control information.
- the receiver may receive the data based on the control information.
- a base station including: a transmitter to transmit, to a terminal, control information associated with first data, and to transmit the first data to the terminal using the control information; and a receiver to receive an ACK message with respect to the control information.
- the transmitter may retransmit the control information.
- the error when an error occurs wherein the error is an activation message not received by a terminal transmitted from a base station in a persistent allocation scheme, it is possible to quickly recover from the error.
- FIG. 1 is a diagram illustrating an example of recovering from a transmission error according to an embodiment of the present invention
- FIG. 2 is a diagram illustrating an operation of a base station recovering from a transmission error according to an embodiment of the present invention
- FIG. 3 is a diagram illustrating an operation of a terminal recovering from a transmission error according to an embodiment of the present invention
- FIG. 4 is a block diagram illustrating a structure of a base station according to an embodiment of the present invention.
- FIG. 5 is a block diagram illustrating a structure of a terminal according to an embodiment of the present invention.
- FIG. 6 is a block diagram illustrating a structure of a base station according to another embodiment of the present invention.
- FIG. 1 is a diagram illustrating an example of recovering from a transmission error according to an embodiment of the present invention.
- FIG. 1 shows an embodiment where a base station transmits downlink data to a terminal, the present invention may be applicable to an embodiment where the terminal transmits uplink data to the base station.
- the base station may divide the downlink data into a plurality of data blocks, and sequentially transmit the divided data blocks to the terminal.
- the divided data blocks are referred to as first data, second data, and the like, respectively.
- the base station may transmit first data 120 to the terminal.
- the base station may transmit control information 110 associated with the first data 120 prior to transmitting the first data 120 .
- the control information 110 may include information associated with a radio resource used to transmit the first data 120 .
- the terminal may receive information associated with the radio resource, and receive the first data 120 by referring to the received information associated with the radio resource.
- the terminal may be aware of information associated with a time domain or a frequency domain where the first data 120 is transmitted, by referring to information associated with the radio resource.
- the terminal may receive the first data 120 in the time domain or the frequency domain where the first data 120 is transmitted.
- the control information 110 may include modulation and coding scheme information associated with the first data 120 or error control scheme information associated with the first data 120 .
- the terminal may receive the modulation and coding scheme information or the error control scheme information, and receive the first data 120 using the modulation and coding scheme information or the error control scheme information.
- control information may be transmitted using a Physical Downlink Control Channel (PDCCH).
- first data or second data may be transmitted using a Physical Downlink Shared Channel (PDSCH).
- PDCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- the base station may transmit data every persistent allocation interval 190 . After transmitting the first data 120 , the base station may transmit second data 140 to the terminal. When control information 130 associated with the second data 140 is different from the control information 110 associated with the first data 120 , the base station may transmit the control information 130 associated with the second data 140 to the terminal.
- the terminal may receive information associated with a radio resource to transmit the second data 140 , and modulation and coding scheme information or error control scheme information associated with the second data 140 , which are included in the control information 130 .
- the terminal may receive the second data 140 using the control information 130 .
- variable allocation scheme A case where the control information 110 associated with the first data 120 is different from the control information 130 associated with the second data 140 is referred to as a variable allocation scheme.
- the variable allocation scheme may need to transmit control information with respect to every piece of data.
- the base station may apply the same modulation and coding scheme or the same error control scheme to every piece of data.
- the control information 110 associated with the first data 120 may be the same as the control information 130 associated with the second data 140 . Accordingly, only when initially transmitting data, the base station may transmit the control information 110 . After transmitting the control information 110 , the base station may not transmit additional control information. Since a transmission of control information decreases, a radio resource utilization efficiency may be enhanced, which is referred to as a persistent allocation scheme or a semi-persistent scheduling scheme.
- an activation message included in the control information 110 may be transmitted prior to data transmission.
- the activation message indicates a start of use of the radio resource.
- a deactivation message included in control Information 170 may be transmitted after the data transmission. The deactivation message indicates a suspension of use of the radio resource.
- the terminal may not receive control information.
- the terminal may not receive first data and second data.
- the control information 110 , 130 , and 150 may be transmitted with respect the first data 120 , the second data 140 , and third data 160 , respectively. Therefore, when the terminal does not receive the control Information 110 associated with the first data 120 , the terminal may abandon receiving of the first data 120 . When the terminal receives the control information 130 associated with the second data 140 , the terminal may receive the second data 140 using the control information 130 .
- control information 110 and 130 may be transmitted at particular points in time.
- the terminal may not receive the first data 120 and the second data 140 .
- the terminal when a terminal receives a control information, the terminal may transmit, to a base station, an acknowledgement (ACK) message with respect to the control information.
- ACK acknowledgement
- the base station When the base station receives, from the terminal, the ACK message with respect to the control information, it may be known that the base station successfully receives the control information.
- the base station may retransmit the control information to the terminal.
- FIG. 2 is a diagram illustrating an operation of a base station recovering from a transmission error according to an embodiment of the present invention.
- the base station may transmit first data 242 and 252 , second data 262 , and control information 241 , 251 , and 261 using a downlink channel 210 .
- the control information 241 may include an activation message with respect to a radio resource.
- the terminal may receive the first data 242 using the radio resource.
- the transmission error may be defined as the control information 241 or the first data 242 transmitted from the base station is not received by the terminal.
- the terminal may not recognize that the radio resource is activated. Also, since the terminal may be unaware of that the control information 241 or the first data 242 is transmitted, the terminal may not transmit a NACK message 243 .
- the base station may retransmit the first data 252 . Also, the base station may retransmit the control information 251 associated with the first data 252 .
- the retransmitted control information 251 may include an activation message with respect to the radio resource, and modulation and coding scheme information or error control scheme information associated with the first data 252 .
- the base station may no longer transmit additional control information.
- the base station may transmit the second data 262 to the terminal but may not transmit control information 261 associated with the second data 262 .
- the terminal may receive the second data 262 using the control information 251 with respect to the second data 262 .
- the base station may retransmit the deactivation message to the terminal, which is similar to an embodiment of checking on ACK message and retransmitting an activation message with respect to the radio resource.
- FIG. 3 is a diagram illustrating an operation of a terminal recovering from a transmission error according to an embodiment of the present invention.
- a base station may transmit first data 342 and 352 , and second data 362 using a downlink channel 310 . Also, the base station may transmit control information 341 , 351 , and 361 using the downlink channel 310 .
- the base station transmits the control information 341 associated with the first data 342 but a transmission error occurs.
- the terminal may not receive an ACK message and may not transmit a NACK message 343 .
- the base station may retransmit the first data 352 .
- the retransmitted control information 351 may include modulation and coding scheme information or error control scheme information associated with the first data 352 .
- the terminal may receive the first data 352 using the retransmitted control information 351 .
- An activation message with respect to a radio resource may not be received yet at the terminal.
- the terminal may retransmit an error recovery request 354 using an uplink channel 320 .
- the base station may retransmit an activation message 361 , in response to the error recovery request 354 .
- the base station may retransmit the deactivation message to the terminal, which is similar to an embodiment of retransmitting an activation message with respect to the radio resource.
- FIG. 4 is a block diagram illustrating a structure of a base station 400 according to an embodiment of the present invention.
- the base station 400 may include a radio resource allocation unit 410 , a control information generation unit 420 , a transmitter 430 , and a receiver 440 .
- the radio resource allocation unit 410 may allocate a radio resource to a terminal 450 .
- the control information generation unit 420 may generate control information by referring to the allocated radio resource.
- the control information may include information associated with the radio resource.
- the transmitter 430 may transmit the control information to the terminal 450 .
- the transmitter 430 may transmit first data to the terminal 450 using the radio resource.
- the terminal 450 may receive information associated with the radio resource, included in the control information, and receive the first data using information associated with the radio resource.
- control information may include an activation message or a deactivation message with respect to a radio resource.
- the activation message with respect to the radio resource indicates that a previously unused radio resource is allocated to a particular terminal and is used to transmit first data.
- the deactivation message with respect to the radio resource indicates that a radio resource used to transmit the first data is released.
- the activation message and the deactivation message may be indicated as a field of a PDCCH, for example, one bit, or may be indicated as a terminal identifier for a voice service, for example, a semi-persistent scheduling C-RNTI, and the like.
- the terminal 450 may receive the activation message with respect to the radio resource, and transmit the first data using the radio resource associated with the activation message.
- the terminal 450 may receive the deactivation message with respect to the radio resource and may suspend a transmission of the first data using the radio resource.
- the terminal 450 may not receive the first data. Also, when the terminal 450 does not receive the deactivation message with respect to the radio resource, the radio resource may not be retrieved. Accordingly, the base station 400 may need to verify whether the terminal 450 receives the activation message or the deactivation message with respect to the radio resource. The terminal 450 may receive the control information, and may transmit, to the base station 400 , an ACK message with respect to the received control information.
- the receiver 440 may receive the ACK message with respect to the control information.
- the base station 400 may not verify whether the terminal 450 does not receive the control information.
- the transmitter 430 may retransmit the control information to the terminal 450 .
- the ACK message may be transmitted using a Physical Uplink Control Channel (PUCCH).
- a content of the ACK message may include a Hybrid ARQ Positive Acknowledgement (HARQ ACK).
- a content of a NACK message may include a HARQ NACK.
- control information may include modulation and coding scheme information associated with the first data or error control scheme information associated with the first data.
- the transmitter 430 may transmit, to the terminal 450 , the modulation and coding scheme information or the error control scheme information associated with the first terminal.
- the terminal 450 may receive the first data based on the modulation and coding scheme information or the error control scheme information.
- the transmitter 430 may transmit, to the terminal 450 , second data using modulation and coding scheme information associated with the first data or error control scheme information associated with the first data.
- control information transmitted from the transmitter 430 may be applicable to a plurality of data as well as particular data.
- the transmitter 430 may transmit the first data or the second data using the radio resource associated with the activation message.
- FIG. 5 is a block diagram illustrating a structure of a terminal 500 according to an embodiment of the present invention.
- the terminal 500 may include a receiver 510 and a transmitter 520 .
- the receiver 510 may receive, from a base station 530 , control information associated with data.
- the transmitter 520 may transmit, to the base station 530 , an ACK message with respect to the control information.
- the control information may include information regarding a radio resource associated with first data.
- the receiver 510 may receive the first data by referring to information associated with the radio resource.
- control information may include modulation and coding scheme information associated with the first data or error control scheme information associated with the first data.
- the control information may include an activation message or a deactivation message with respect to the radio resource.
- the activation message with respect to the radio resource indicates that a previously unused radio resource is allocated to a particular terminal and is used to transmit the first data.
- the deactivation message with respect to the radio resource indicates that the radio resource used to transmit the first data is released.
- the receiver 510 may receive the first data using the activated radio resource.
- FIG. 6 is a block diagram illustrating a structure of a base station 600 according to another embodiment of the present invention.
- the terminal 600 may include a transmitter 610 and a receiver 620 .
- the transmitter 610 may transmit, to a terminal 630 , control information associated with first data.
- the control information may include information associated with a radio resource that is allocated for the first data.
- the control information may include information associated with a time domain or a frequency domain where the first data is transmitted.
- the control information may include an activation message with respect to the radio resource.
- the activation message with respect to the radio resource indicates that a previously unused radio resource is allocated to a particular terminal and is used to transmit the first data.
- the terminal 630 may receive the activation message and receive the first data using the activated radio resource.
- the deactivation message with respect to the radio resource indicates that the radio resource used to transmit the first data is released.
- the terminal 630 may receive the deactivation message and suspend the data transmission using the radio resource.
- the control information may include at least one of modulation and coding scheme information associated with the first data and error control scheme information associated with the first data.
- the terminal 630 may receive the first data using the modulation and coding scheme information or the error control scheme information.
- the control information is required for the terminal 630 to receive the first data. Accordingly, the base station 600 may verify whether the terminal 630 receives the control information. According to an embodiment of the preset invention, when the terminal 630 receives the control information, the terminal 630 may transmit, to the base station 600 , an ACK message with respect to the control information. The receiver 620 may receive the ACK message with respect to the control information.
- the transmitter 610 may retransmit the control information to the terminal 630 .
- control information may be applicable to second data as well as the first data.
- the transmitter 610 may also transmit the second data using the control Information.
Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 12/996,927, filed Dec. 8, 2010, which claims the benefit under 35 U.S.C. § 371, of International Application No. PCT/KR09/03254, filed Jun. 17, 2009, which claimed priority to Korean Application No. 10-2009-0052760, filed Jun. 15, 2009, and Korean Application No. 10-2008-0058425, filed Jun. 20, 2008, in the Korean Intellectual Property Office, all of the disclosures of which are hereby incorporated by reference.
- The present invention relates to a method of transmitting and receiving data in a packet based mobile communication system, and more particularly, to a method of re-covering from a reception error of a control message, which occurs when transmitting and receiving data using a persistent allocation scheme, in order to effectively support a voice service between a base station and a mobile terminal in a next generation packet mobile communication system, which is under discussion for a standardization.
- 3rd Generation Partnership Project (3GPP), one of a number of mobile communication standardization organizations, is engaging in a Long Term Evolution (LTE) standardization process and an advanced LTE standardization process in order to develop a packet based mobile communication system standardization. A mobile communication system generally includes a base station constituting a cell, and a mobile terminal used by a user. A plurality of mobile terminals may transmit and receive packet data to and from the base station via a radio channel.
- An aspect of the present invention provides a method of effectively controlling an activation and a deactivation of a persistent allocation scheme when transmitting and receiving packet data using the persistent allocation scheme, and a method of transmitting and receiving a control message for an error recovery.
- According to an aspect of the present invention, there is provided a base station including: a radio resource allocation unit to allocate a radio resource to a terminal; a control information generation unit to generate control information based on the allocated radio resource; a transmitter to transmit the control information to the terminal; and a receiver to receive an acknowledgement (ACK) message with respect to the control information.
- According to another aspect of the present invention, there is provided a terminal including: a receiver to receive, from a base station, control information associated with data; and a transmitter to transmit, to the base station, an ACK message with respect to the control information. The receiver may receive the data based on the control information.
- According to still another aspect of the present invention, there is provided a base station including: a transmitter to transmit, to a terminal, control information associated with first data, and to transmit the first data to the terminal using the control information; and a receiver to receive an ACK message with respect to the control information. When the ACK message with respect to the control information is not received, the transmitter may retransmit the control information.
- According to embodiments of the present invention, when an error occurs wherein the error is an activation message not received by a terminal transmitted from a base station in a persistent allocation scheme, it is possible to quickly recover from the error.
-
FIG. 1 is a diagram illustrating an example of recovering from a transmission error according to an embodiment of the present invention; -
FIG. 2 is a diagram illustrating an operation of a base station recovering from a transmission error according to an embodiment of the present invention; -
FIG. 3 is a diagram illustrating an operation of a terminal recovering from a transmission error according to an embodiment of the present invention; -
FIG. 4 is a block diagram illustrating a structure of a base station according to an embodiment of the present invention; -
FIG. 5 is a block diagram illustrating a structure of a terminal according to an embodiment of the present invention; and -
FIG. 6 is a block diagram illustrating a structure of a base station according to another embodiment of the present invention. - Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. Exemplary embodiments are described below to explain the present invention by referring to the figures.
-
FIG. 1 is a diagram illustrating an example of recovering from a transmission error according to an embodiment of the present invention. AlthoughFIG. 1 shows an embodiment where a base station transmits downlink data to a terminal, the present invention may be applicable to an embodiment where the terminal transmits uplink data to the base station. - Generally, an amount of the downlink data may be too great to be transmitted from the base station to the terminal at once. Therefore, the base station may divide the downlink data into a plurality of data blocks, and sequentially transmit the divided data blocks to the terminal. Hereinafter, the divided data blocks are referred to as first data, second data, and the like, respectively.
- Referring to
FIG. 1 , the base station may transmitfirst data 120 to the terminal. The base station may transmitcontrol information 110 associated with thefirst data 120 prior to transmitting thefirst data 120. According to an embodiment of the present invention, thecontrol information 110 may include information associated with a radio resource used to transmit thefirst data 120. The terminal may receive information associated with the radio resource, and receive thefirst data 120 by referring to the received information associated with the radio resource. For example, the terminal may be aware of information associated with a time domain or a frequency domain where thefirst data 120 is transmitted, by referring to information associated with the radio resource. The terminal may receive thefirst data 120 in the time domain or the frequency domain where thefirst data 120 is transmitted. - The
control information 110 may include modulation and coding scheme information associated with thefirst data 120 or error control scheme information associated with thefirst data 120. The terminal may receive the modulation and coding scheme information or the error control scheme information, and receive thefirst data 120 using the modulation and coding scheme information or the error control scheme information. - When the present invention is applied to a 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) system, control information may be transmitted using a Physical Downlink Control Channel (PDCCH). Also, first data or second data may be transmitted using a Physical Downlink Shared Channel (PDSCH).
- Referring again to
FIG. 1 , the base station may transmit data everypersistent allocation interval 190. After transmitting thefirst data 120, the base station may transmitsecond data 140 to the terminal. Whencontrol information 130 associated with thesecond data 140 is different from thecontrol information 110 associated with thefirst data 120, the base station may transmit thecontrol information 130 associated with thesecond data 140 to the terminal. - The terminal may receive information associated with a radio resource to transmit the
second data 140, and modulation and coding scheme information or error control scheme information associated with thesecond data 140, which are included in thecontrol information 130. The terminal may receive thesecond data 140 using thecontrol information 130. - A case where the
control information 110 associated with thefirst data 120 is different from thecontrol information 130 associated with thesecond data 140 is referred to as a variable allocation scheme. The variable allocation scheme may need to transmit control information with respect to every piece of data. - In the case of a service with a low data transmission rate such as a voice service, when control information is additionally transmitted with respect to every piece of data, it may be ineffective. The base station may apply the same modulation and coding scheme or the same error control scheme to every piece of data. In this case, the
control information 110 associated with thefirst data 120 may be the same as thecontrol information 130 associated with thesecond data 140. Accordingly, only when initially transmitting data, the base station may transmit thecontrol information 110. After transmitting thecontrol information 110, the base station may not transmit additional control information. Since a transmission of control information decreases, a radio resource utilization efficiency may be enhanced, which is referred to as a persistent allocation scheme or a semi-persistent scheduling scheme. - In the case of the persistent allocation scheme, an activation message included in the
control information 110 may be transmitted prior to data transmission. The activation message indicates a start of use of the radio resource. Also, a deactivation message included incontrol Information 170 may be transmitted after the data transmission. The deactivation message indicates a suspension of use of the radio resource. - Since a status of a radio channel formed between the base station and the terminal may be unstable, the terminal may not receive control information. When the terminal does not receive the control information, the terminal may not receive first data and second data.
- Referring to
FIG. 1 , in the variable allocation scheme, thecontrol information first data 120, thesecond data 140, andthird data 160, respectively. Therefore, when the terminal does not receive thecontrol Information 110 associated with thefirst data 120, the terminal may abandon receiving of thefirst data 120. When the terminal receives thecontrol information 130 associated with thesecond data 140, the terminal may receive thesecond data 140 using thecontrol information 130. - In the persistent allocation scheme, the
control information control information first data 120 and thesecond data 140. - According to an embodiment of the present invention, when a terminal receives a control information, the terminal may transmit, to a base station, an acknowledgement (ACK) message with respect to the control information. When the base station receives, from the terminal, the ACK message with respect to the control information, it may be known that the base station successfully receives the control information.
- Conversely, when the base station does not receive the ACK message with respect to the control information, whether the terminal successfully receives the control Information may be uncertain. In preparation for a case where the terminal does not receive the control information, the base station may retransmit the control information to the terminal.
-
FIG. 2 is a diagram illustrating an operation of a base station recovering from a transmission error according to an embodiment of the present invention. The base station may transmitfirst data 242 and 252,second data 262, and controlinformation downlink channel 210. - The
control information 241 may include an activation message with respect to a radio resource. The terminal may receive thefirst data 242 using the radio resource. The transmission error may be defined as thecontrol information 241 or thefirst data 242 transmitted from the base station is not received by the terminal. - When the transmission error occurs, the terminal may not recognize that the radio resource is activated. Also, since the terminal may be unaware of that the
control information 241 or thefirst data 242 is transmitted, the terminal may not transmit aNACK message 243. - When the base station does not receive an ACK message from the terminal, the base station may retransmit the first data 252. Also, the base station may retransmit the
control information 251 associated with the first data 252. The retransmittedcontrol information 251 may include an activation message with respect to the radio resource, and modulation and coding scheme information or error control scheme information associated with the first data 252. - When the terminal receives the retransmitted
control information 251 and transmits anACK message 253 to the base station using anuplink channel 220, the base station may no longer transmit additional control information. The base station may transmit thesecond data 262 to the terminal but may not transmitcontrol information 261 associated with thesecond data 262. The terminal may receive thesecond data 262 using thecontrol information 251 with respect to thesecond data 262. - When the terminal does not receive, from the base station, a deactivation message with respect to a radio resource, the base station may retransmit the deactivation message to the terminal, which is similar to an embodiment of checking on ACK message and retransmitting an activation message with respect to the radio resource.
-
FIG. 3 is a diagram illustrating an operation of a terminal recovering from a transmission error according to an embodiment of the present invention. A base station may transmitfirst data 342 and 352, andsecond data 362 using adownlink channel 310. Also, the base station may transmitcontrol information downlink channel 310. - Here, it is assumed that the base station transmits the
control information 341 associated with thefirst data 342 but a transmission error occurs. - When the transmission error occurs, the terminal may not receive an ACK message and may not transmit a
NACK message 343. When the base station does not receive the ACK message from the terminal, the base station may retransmit the first data 352. The retransmittedcontrol information 351 may include modulation and coding scheme information or error control scheme information associated with the first data 352. - The terminal may receive the first data 352 using the retransmitted
control information 351. An activation message with respect to a radio resource may not be received yet at the terminal. The terminal may retransmit anerror recovery request 354 using anuplink channel 320. - The base station may retransmit an
activation message 361, in response to theerror recovery request 354. - When the terminal does not receive, from the base station, a deactivation message with respect to a radio message, the base station may retransmit the deactivation message to the terminal, which is similar to an embodiment of retransmitting an activation message with respect to the radio resource.
-
FIG. 4 is a block diagram illustrating a structure of abase station 400 according to an embodiment of the present invention. Thebase station 400 may include a radioresource allocation unit 410, a controlinformation generation unit 420, atransmitter 430, and areceiver 440. - The radio
resource allocation unit 410 may allocate a radio resource to a terminal 450. - The control
information generation unit 420 may generate control information by referring to the allocated radio resource. The control information may include information associated with the radio resource. - The
transmitter 430 may transmit the control information to the terminal 450. According to an embodiment of the present invention, thetransmitter 430 may transmit first data to the terminal 450 using the radio resource. The terminal 450 may receive information associated with the radio resource, included in the control information, and receive the first data using information associated with the radio resource. - According to an embodiment of the present invention, control information may include an activation message or a deactivation message with respect to a radio resource. The activation message with respect to the radio resource indicates that a previously unused radio resource is allocated to a particular terminal and is used to transmit first data. The deactivation message with respect to the radio resource indicates that a radio resource used to transmit the first data is released. In a 3GPP LTE system, the activation message and the deactivation message may be indicated as a field of a PDCCH, for example, one bit, or may be indicated as a terminal identifier for a voice service, for example, a semi-persistent scheduling C-RNTI, and the like.
- Accordingly, the terminal 450 may receive the activation message with respect to the radio resource, and transmit the first data using the radio resource associated with the activation message. The terminal 450 may receive the deactivation message with respect to the radio resource and may suspend a transmission of the first data using the radio resource.
- When the terminal 450 does not receive the activation message with respect to the radio resource, the terminal 450 may not receive the first data. Also, when the terminal 450 does not receive the deactivation message with respect to the radio resource, the radio resource may not be retrieved. Accordingly, the
base station 400 may need to verify whether the terminal 450 receives the activation message or the deactivation message with respect to the radio resource. The terminal 450 may receive the control information, and may transmit, to thebase station 400, an ACK message with respect to the received control information. - The
receiver 440 may receive the ACK message with respect to the control information. When thereceiver 440 does not receive the ACK message with respect to the control information, thebase station 400 may not verify whether the terminal 450 does not receive the control information. In this case, thetransmitter 430 may retransmit the control information to the terminal 450. - When the present invention is applied to the 3GPP LTE system, the ACK message may be transmitted using a Physical Uplink Control Channel (PUCCH). A content of the ACK message may include a Hybrid ARQ Positive Acknowledgement (HARQ ACK). A content of a NACK message may include a HARQ NACK.
- According to an embodiment of the present invention, the control information may include modulation and coding scheme information associated with the first data or error control scheme information associated with the first data.
- The
transmitter 430 may transmit, to the terminal 450, the modulation and coding scheme information or the error control scheme information associated with the first terminal. The terminal 450 may receive the first data based on the modulation and coding scheme information or the error control scheme information. - According to an embodiment of the present invention, the
transmitter 430 may transmit, to the terminal 450, second data using modulation and coding scheme information associated with the first data or error control scheme information associated with the first data. Specifically, control information transmitted from thetransmitter 430 may be applicable to a plurality of data as well as particular data. - Also, the
transmitter 430 may transmit the first data or the second data using the radio resource associated with the activation message. -
FIG. 5 is a block diagram illustrating a structure of a terminal 500 according to an embodiment of the present invention. The terminal 500 may include areceiver 510 and atransmitter 520. - The
receiver 510 may receive, from abase station 530, control information associated with data. - When the
receiver 510 successfully receives the control information, thetransmitter 520 may transmit, to thebase station 530, an ACK message with respect to the control information. According to an embodiment of the present invention, the control information may include information regarding a radio resource associated with first data. Thereceiver 510 may receive the first data by referring to information associated with the radio resource. - According to an embodiment of the present invention, the control information may include modulation and coding scheme information associated with the first data or error control scheme information associated with the first data.
- According to an embodiment of the present invention, the control information may include an activation message or a deactivation message with respect to the radio resource. The activation message with respect to the radio resource indicates that a previously unused radio resource is allocated to a particular terminal and is used to transmit the first data. The deactivation message with respect to the radio resource indicates that the radio resource used to transmit the first data is released. The
receiver 510 may receive the first data using the activated radio resource. -
FIG. 6 is a block diagram illustrating a structure of abase station 600 according to another embodiment of the present invention. The terminal 600 may include atransmitter 610 and areceiver 620. - The
transmitter 610 may transmit, to a terminal 630, control information associated with first data. According to an embodiment of the present invention, the control information may include information associated with a radio resource that is allocated for the first data. Specifically, the control information may include information associated with a time domain or a frequency domain where the first data is transmitted. - According to an embodiment of the present invention, the control information may include an activation message with respect to the radio resource. The activation message with respect to the radio resource indicates that a previously unused radio resource is allocated to a particular terminal and is used to transmit the first data. The terminal 630 may receive the activation message and receive the first data using the activated radio resource.
- Also, the deactivation message with respect to the radio resource indicates that the radio resource used to transmit the first data is released. The terminal 630 may receive the deactivation message and suspend the data transmission using the radio resource.
- The control information may include at least one of modulation and coding scheme information associated with the first data and error control scheme information associated with the first data. The terminal 630 may receive the first data using the modulation and coding scheme information or the error control scheme information.
- The control information is required for the terminal 630 to receive the first data. Accordingly, the
base station 600 may verify whether the terminal 630 receives the control information. According to an embodiment of the preset invention, when the terminal 630 receives the control information, the terminal 630 may transmit, to thebase station 600, an ACK message with respect to the control information. Thereceiver 620 may receive the ACK message with respect to the control information. - When the
receiver 620 does not receive the ACK message with respect to the control information, it is uncertain whether the terminal 630 receives the control information. Accordingly, thetransmitter 610 may retransmit the control information to the terminal 630. - According to an embodiment of the present invention, the control information may be applicable to second data as well as the first data. In this case, the
transmitter 610 may also transmit the second data using the control Information. - Although a few exemplary embodiments of the present invention have been shown and described, the present invention is not limited to the described exemplary embodiments. Instead, it would be appreciated by those skilled in the art that changes may be made to these exemplary embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (2)
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US16/015,397 US11026214B2 (en) | 2008-06-20 | 2018-06-22 | Method of error recovery in transmitting and receiving voice service in packet based mobile communication systems |
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US12/996,927 US9271263B2 (en) | 2008-06-20 | 2009-06-17 | Method of error recovery in transmitting and receiving voice service in packet based mobile communication systems |
US15/049,330 US10009884B2 (en) | 2008-06-20 | 2016-02-22 | Method of error recovery in transmitting and receiving voice service in packet based mobile communication systems |
US16/015,397 US11026214B2 (en) | 2008-06-20 | 2018-06-22 | Method of error recovery in transmitting and receiving voice service in packet based mobile communication systems |
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---|---|---|---|---|
US10476694B2 (en) * | 2015-01-30 | 2019-11-12 | Kyocera Corporation | Base station and user terminal, for transmitting and receiving multicast data using semi-persistent scheduling |
US11374694B2 (en) * | 2018-01-17 | 2022-06-28 | Qualcomm Incorporated | Transport block size indication for retransmissions in wireless communications |
US11855784B2 (en) * | 2020-08-11 | 2023-12-26 | Qualcomm Incorporated | Hybrid automatic repeat request (HARQ) enhancement for dormancy-indicating downlink control information (DCI) |
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---|---|---|---|---|
KR101075777B1 (en) * | 2006-02-14 | 2011-10-24 | 한국과학기술원 | System and method for transmitting and receiving resource allocation information in a wireless communication system |
KR101254801B1 (en) * | 2006-04-19 | 2013-04-15 | 삼성전자주식회사 | Method and apparatus for transmitting/receiving a data control channel in a packet data communication system |
US8848618B2 (en) | 2006-08-22 | 2014-09-30 | Qualcomm Incorporated | Semi-persistent scheduling for traffic spurts in wireless communication |
KR20080048659A (en) * | 2006-11-29 | 2008-06-03 | 삼성전자주식회사 | Apparatus and method for transmitting/receiving resource allocation information in a communication system |
US7912057B2 (en) * | 2007-01-12 | 2011-03-22 | Wi-Lan Inc. | Convergence sublayer for use in a wireless broadcasting system |
CN101578802A (en) * | 2007-02-09 | 2009-11-11 | 诺基亚公司 | Method and apparatus for acknowledgement signaling |
WO2008117227A2 (en) | 2007-03-23 | 2008-10-02 | Nokia Corporation | Apparatus, method and computer program product providing semi-dynamic persistent allocation |
US8031688B2 (en) * | 2007-06-11 | 2011-10-04 | Samsung Electronics Co., Ltd | Partitioning of frequency resources for transmission of control signals and data signals in SC-FDMA communication systems |
EP4221408A1 (en) * | 2007-08-13 | 2023-08-02 | Optis Cellular Technology, LLC | Method for transmitting voip packet |
KR20090030562A (en) * | 2007-09-20 | 2009-03-25 | 엘지전자 주식회사 | Method of packet transmission for resource allocation in broadband wireless access system |
EP2696637A1 (en) * | 2007-12-21 | 2014-02-12 | Telefonaktiebolaget LM Ericsson (Publ) | Methods and arrangements in a mobile telecommunications network |
TW200931869A (en) * | 2007-12-31 | 2009-07-16 | Interdigital Patent Holdings | Method and apparatus for handling interactions between measurement gap, automated repeat request, discontinuous reception and discontinuous transmission in wireless communications |
CN101971547B (en) * | 2008-03-10 | 2015-11-25 | 交互数字专利控股公司 | HARQ process is effectively utilized to carry out semi-continuous and method and apparatus that is dynamic data transmission |
WO2009115904A2 (en) | 2008-03-20 | 2009-09-24 | Nokia Corporation | New data indicator for persistently allocated packets in a communication system |
WO2009115909A1 (en) | 2008-03-20 | 2009-09-24 | Nokia Corporation | Method and apparatus for revoking resource allocations |
US8155067B2 (en) * | 2008-03-24 | 2012-04-10 | Interdigital Patent Holdings, Inc. | Method and apparatus for signaling the release of a persistent resource |
US9036564B2 (en) | 2008-03-28 | 2015-05-19 | Qualcomm Incorporated | Dynamic assignment of ACK resource in a wireless communication system |
WO2009126902A2 (en) * | 2008-04-11 | 2009-10-15 | Interdigital Patent Holdings, Inc. | Methods for transmission time interval bundling in the uplink |
EP2112845A1 (en) | 2008-04-25 | 2009-10-28 | Panasonic Corporation | Activation of semi-persistent resource allocations in a mobile communication network |
EP2131517A3 (en) * | 2008-06-03 | 2010-01-20 | Innovative Sonic Limited | Method and apparatus for improving HARQ uplink transmission |
CN102113266B (en) * | 2008-06-06 | 2015-03-18 | 黑莓有限公司 | Signaling reserved hybrid automatic repeat request information for downlink semi-persistent scheduling |
JP5154523B2 (en) * | 2008-08-27 | 2013-02-27 | 創新音▲速▼股▲ふん▼有限公司 | Method and apparatus for processing HARQ process of SPS function |
EP2377358B1 (en) | 2008-12-12 | 2018-08-29 | BlackBerry Limited | Uplink semi-persistent scheduling explicit release acknowledgement transmission |
WO2010077938A1 (en) | 2008-12-17 | 2010-07-08 | Research In Motion Limited | Semi-persistent resource release by wireless communication device |
US8428020B2 (en) | 2009-02-02 | 2013-04-23 | Research In Motion Limited | Indication of uplink semi-persistent scheduling explicit release using a downlink physical downlink control channel |
US8295240B2 (en) | 2009-02-02 | 2012-10-23 | Research In Motion Limited | Discontinuous reception start offset coordinated with semi-persistent scheduling system and method |
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WO2009154404A3 (en) | 2013-02-28 |
US20160242154A1 (en) | 2016-08-18 |
US11026214B2 (en) | 2021-06-01 |
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