KR102295288B1 - Device and method for resuming data transmission in a mobile communication system - Google Patents

Abstract

The present invention relates to a method and apparatus for resuming data transmission/reception in a mobile communication system. According to the present invention, when an uplink data arrival event occurs while the uplink of the serving cell is asynchronous, the terminal transmits a preamble to the base station and receives the random access response information corresponding thereto, the uplink resource obtained from the random access response information. Transmitting uplink data to the base station through the scheduling information of the base station, receiving a physical downlink control channel including uplink control information from the base station, and MAC (Medium Access Control) with a command signal instructing resource resetting from the base station and re-establishing the resource by receiving the layer control element.

Description

Device and method for resuming data transmission in a mobile communication system

The present invention relates to a method and apparatus for resuming data transmission/reception in a mobile communication system.

In a wireless communication system, a user equipment (UE) and a base station (eNode B; eNB) transmit and receive data. One or more cells exist in one base station, and each cell is configured with a respective bandwidth to provide downlink or uplink transmission service to multiple terminals.

Such a base station controls data transmission/reception for a plurality of terminals. The base station transmits downlink scheduling information for downlink (DL) data and informs the corresponding terminal of the time/frequency domain in which data is to be transmitted, encoding, data size, and hybrid automatic repeat and request (HARQ) related information. In addition, the base station transmits uplink scheduling information for uplink (UL) data to the corresponding terminal and informs the corresponding terminal of the time/frequency domain, encoding, data size, HARQ-related information, etc. that the corresponding terminal can use.

The UE completes the random access procedure and maintains an uplink synchronized state with the base station. However, in the UE in a state in which the physical uplink control channel (Physical Uplink Control Channel, hereinafter, referred to as PUCCH) and sounding reference signal (hereinafter referred to as SRS) resources for the serving cell are released, PUCCH and SRS resources setting procedure is required.

In addition, when a downlink data arrival event occurs when the uplink synchronization state with the UE is in a non-synchronized state in the serving cell, the serving cell performs a physical downlink control channel (PDCCH). Instructs the UE to perform random access with an order. The UE completes the random access procedure and maintains an uplink synchronized state with the base station. However, in a state in which the UE releases PUCCH and SRS resources for the serving cell, a PUCCH and SRS resource reconfiguration procedure is required.

In the carrier aggregation technology, the UE releases the SRS resource when the Time Alignment Timer (TAT) expires for a serving cell belonging to a Secondary Timing Advance Group (sTAG). Upon completion of the random access procedure for setting the time alignment of the sTAG, which is started by the indication of the physical downlink control channel in the base station, the terminal is in uplink synchronized with the serving cells of the sTAG. to keep However, in a state in which the SRS resources of the corresponding serving cells are released, a procedure for SRS resource reconfiguration is required.

According to the prior art, a radio resource control (RRC) connection reconfiguration message including PUCCH and SRS configuration information is used from the base station to the terminal to reset the PUCCH or SRS resource.

Uplink data arrives in a non-synchronized state with the primary serving cell (PSCell) of the secondary cell group in the terminal in dual connection to the master cell group (MCG) and the secondary cell group (SCG) A random access procedure according to a (UL data arrival) or a downlink data arrival (DL data arrival) event is performed. Thereafter, in a state in which PUCCH and SRS resources for the serving cell of the secondary cell group of the UE are released, a procedure for reconfiguring PUCCH and SRS resources is required.

In the dual connectivity structure, the radio resource control message is transmitted to the terminal only through the master cell group. Therefore, in order to configure the PUCCH and SRS resources of the secondary cell group serving cells of the UE, the UE requests radio resource control connection reset from the secondary cell group to the master cell group, and transmits a radio resource control connection reset message to the UE through the master cell group. Should be. Therefore, a time delay and signaling overhead occur between the master cell group and the auxiliary cell group.

Domestic Patent Publication No. 2014-0130430

In the process of performing random access between a terminal and a serving cell when data transmission/reception is resumed in a state in which an uplink physical uplink control channel (PUCCH) or a sounding reference signal (SRS) resource is released, the method for resuming data transmission/reception Upon completion of the random access procedure, the PUCCH and/or SRS resource of the corresponding serving cell can be reconfigured using the PUCCH or/and SRS configuration information stored immediately before the release of the PUCCH or/and SRS resource.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The apparatus for resuming data transmission and reception in a mobile communication system according to an embodiment of the present invention includes a physical uplink control channel and a radio resource setting message or a reset message for serving cells of a master cell group and serving cells of a subcell group a memory for storing sounding reference signal setting information; a radio frequency unit for performing mutual communication with a base station including the serving cells of the master cell group and the serving cells of the sub cell group; and a processor for resetting the resource of the corresponding serving cell by using the configuration information stored in the memory when a MAC (Medium Access Control) layer control element is received as a command signal instructing resource resetting from the base station.

In a method for resuming data transmission and reception in a mobile communication system according to another embodiment of the present invention, when an uplink data arrival event occurs in a state in which the uplink of a serving cell is asynchronous, the terminal transmits a preamble to the base station, and a random access response corresponding thereto receiving information; transmitting uplink data to a base station through scheduling information of uplink resources obtained from random access response information; Receiving a physical downlink control channel including uplink control information from the base station; and receiving a MAC (Medium Access Control) layer control element as a command signal instructing resource resetting from the base station to reset the resource.

A method for resuming data transmission and reception in a mobile communication system according to another embodiment of the present invention includes: transmitting a random access signal from a base station to a terminal when a downlink data arrival event occurs in a state in which a downlink of a serving cell is asynchronous; transmitting a preamble from the terminal to the base station and receiving random access response information corresponding thereto; transmitting uplink data to a base station through scheduling information of uplink resources obtained from random access response information; receiving a physical downlink control channel from a base station; and receiving a MAC (Medium Access Control) layer control element as a command signal instructing resource resetting from the base station to reset the resource.

In a method for resuming data transmission and reception in a mobile communication system according to another embodiment of the present invention, when a time alignment event of a serving cell corresponding to a secondary timing advance group (sTAG) occurs, a random access signal is transmitted from a base station to a terminal step; transmitting a preamble from the terminal to the base station and receiving random access response information corresponding thereto; and receiving the MAC layer control element as a command signal instructing resource resetting from the base station to reset the resource.

The present invention provides an effect of resolving unnecessary delay and signaling overhead problems that occur when data transmission/reception is resumed in a terminal configured with carrier aggregation and/or dual connectivity.

In addition, the embodiments of the present invention are for illustration, and those skilled in the art will be able to make various modifications, changes, substitutions, and additions through the technical spirit and scope of the appended claims, and such modifications and changes fall within the scope of the following claims. should be seen as

1 is a view for explaining a method of resuming data transmission and reception in a mobile communication system according to an embodiment of the present invention;
2 is a view for explaining a method of resuming data transmission and reception in a mobile communication system according to another embodiment of the present invention;
3 and 4 are diagrams for explaining a method of resuming data transmission/reception in a mobile communication system according to still another embodiment of the present invention.
5 is a diagram for explaining a MAC layer control element;
6 is a diagram for explaining a MAC PDU subheader;
7 is a configuration diagram illustrating an apparatus for resuming data transmission/reception in a mobile communication system according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings.

In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In an embodiment of the present invention, the UE (User Equipment; 100) is a physical uplink control channel (Physical Uplink) of the serving cells of the Master Cell Group (MCG) or the serving cells of the Secondary Cell Group (SCG). When receiving a Radio Resource Control (RRC) configuration message or a reset message including control channel (hereinafter, referred to as PUCCH) and a sounding reference signal (hereinafter, referred to as SRS) configuration information, the serving cell PUCCH and SRS configuration information is stored for each.

The terminal 100 maintains preset PUCCH and SRS configuration information of the corresponding serving cell in the PUCCH and SRS resource release procedure, and changes the PUCCH and SRS resources of the corresponding serving cell to a release state.

The case where the terminal 100 maintains preset PUCCH and SRS configuration information of the corresponding serving cell and changes the PUCCH and SRS resources of the corresponding serving cell to the release state includes the following cases.

When the TAT (Time Alignment Timer) of the pTAG (Primary Timing Advance Group) of the master cell group expires, the terminal 100 maintains the preset PUCCH and SRS configuration information of all serving cells of the master cell group set in the terminal 100, and , PUCCH, and SRS resources are changed to the released state.

And, when the TAT of the pTAG of the secondary cell group expires, the terminal 100 maintains the preset PUCCH and SRS configuration information of all serving cells of the secondary cell group set in the terminal 100, and releases the PUCCH and SRS resources to the released state. change

In addition, when the TAT of the sTAG (Secondary Timing Advance Group) of the master cell group MCG expires, the terminal 100 maintains the preset SRS configuration information of all serving cells belonging to the sTAG of the master cell group, and releases the SRS resource to the released state. change

And, when the TAT of the sTAG of the master cell group expires, the terminal 100 maintains the preset SRS configuration information of all serving cells belonging to the sTAG of the sub-cell group, and changes the SRS resource to the released state.

In addition, the terminal 100 is the SR count (COUNT) in the scheduling request (Scheduling Request, hereinafter, referred to as SR) procedure through the primary serving cell (PCell) of the master cell When it reaches the reference value (dsr-TransMax), the terminal Maintains preset PUCCH and SRS configuration information of all serving cells of the master cell group set in (100), and changes PUCCH and SRS resources to a release state. Here, the reference value (dsr-TransMax) is the maximum number of SR transmissions allowed for the terminal 100 and may be provided by the base station (eNode B; eNB; 200).

And, when the SR count (COUNT) reaches the reference value (dsr-TransMax) in the SR procedure through the primary serving cell (PSCell) of the secondary cell group, the terminal 100 sets all of the secondary cell groups set in the terminal 100 Pre-configured PUCCH and SRS configuration information of the serving cell is maintained, and PUCCH and SRS resources are changed to a release state.

Here, the PUCCH configuration information includes CQI information (Channel Quality Indicator-ReportConfig), CQI SCell information (QCI-ReportConfigSCell), and SR information (schedulingRequestConfig). And, the SRS configuration information includes uplink SRS configuration information (soundingRS-UL-ConfigDedicated).

Then, the terminal 100 deletes the stored PUCCH and SRS configuration information of the serving cell at the time of release of the serving cell of the master cell group or the serving cell of the secondary cell group.

1 is a diagram for explaining a method of resuming data transmission/reception in a mobile communication system according to an embodiment of the present invention.

When the uplink synchronization state of the wirelessly connected serving cell is in a non-synchronized state or an uplink data arrival event occurs in a state in which the PUCCH resource for SR is released, the terminal 100 to perform a random access procedure to the serving cell. (Step S1)

That is, the serving cell of the base station 200 receives a preamble from the terminal 100 (step S2). Then, the serving cell receives a random access response (RAR) based on the received preamble. ) information is transmitted to the terminal 100. (Step S3) Then, the terminal 100 transmits an RRC connection establishment request message (Msg3) to the base station 200. (Step S4) Here, the RRC connection establishment request message The RRC layer that controls (Msg3) is responsible for controlling logical channels, transport channels, and physical channels in relation to resource configuration, re-configuration, and release.

That is, the terminal 100 is a C-RNTI (Cell-Radio Network Temporary Identifier, identifier) MAC (Medium Access Control) through the uplink control information (UL Grant, scheduling information of uplink resource) resources obtained from the random access response information; Media access control) layer Control Element (CE) and BSR (Buffer Status Report) are transmitted to the serving cell.

Thereafter, the serving cell allocates a physical uplink shared channel (Physical Uplink Shared Channel, hereinafter referred to as PUSCH) resource based on the BSR information transmitted by the terminal 100 . And, the serving cell identifies the terminal 100 with the C-RNTI MAC layer control element (CE) received in the random access procedure, and uses the C-RNTI for a physical downlink control channel (Physical Downlink Control Channel, hereinafter, PDCCH). (Step S5) Then, the base station 200 transmits a command signal (RadioConnectionReconfiguration Command) instructing reconfiguration of the radio connection of the serving cell to the terminal 100 as a MAC layer control element. (Step S6) )

The random access procedure by the uplink data arrival event includes a random access procedure triggered by uplink data arrival in the primary serving cell (PCell) of the master cell group or the primary serving cell (PSCell) of the sub-cell group in dual connectivity. do.

When the random access procedure by the uplink data arrival event is performed in the primary serving cell (PCell) of the master cell group of the terminal 100 , the base station 200 sets the PUCCH of the serving cell set in the master cell group of the terminal 100 . or/and reset the SRS resource (step S7).

That is, by setting the indicator Ri (Reconfiguration Indicator) value corresponding to the index "SCellIndex i" of the corresponding serving cell to "1", a command signal (RadioConnectionReconfiguration Command) for instructing reconfiguration of the radio connection is used as a MAC layer control element by the terminal 100 send to

The terminal 100, which receives a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration as a MAC layer control element, has an indicator Ri value corresponding to the index "SCellIndex i" of the MAC layer control element of "1" of the master cell group. The PUCCH/SRS resource of the serving cell is reset using the PUCCH/SRS configuration information of the serving cell stored for the serving cell.

When the random access procedure due to the uplink data arrival event is performed in the primary serving cell (PSCell) of the subcell group of the terminal 100 , the base station 200 determines the PUCCH of the serving cell configured in the subcell group of the terminal 100 . or/and reset the SRS resource. That is, by setting the indicator Ri value corresponding to the index "SCellIndex i" of the corresponding serving cell to "1", a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration is transmitted to the terminal 100 as a MAC layer control element.

The terminal 100, which receives a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration as a MAC layer control element, has an indicator Ri value corresponding to an index "SCellIndex i" which is a MAC layer control element of a sub-cell group of "1". The PUCCH/SRS resource of the serving cell is reset using the PUCCH/SRS configuration information of the serving cell stored for the serving cell.

2 is a diagram for explaining a method of resuming data transmission/reception in a mobile communication system according to another embodiment of the present invention.

When a downlink data arrival event occurs when the uplink synchronization state with the wirelessly connected terminal 100 in the base station 200 is in a non-synchronized state (step S10), the serving cell transmits a PDCCH order (order). ) instructs the UE 100 to perform random access (RA). (Step S11) In this case, the random access preamble index may be set to “0”. In addition, the base station 200 transmits the interference and noise signal level of the PUCCH signal or SRS signal of the primary serving cell (PCell) of the master cell group or the primary serving cell (PSCell) of the sub-cell group transmitted by the wirelessly connected terminal 100 ( When the signal to noise ratio (SNR) measurement value is below the reference value and continues for a certain period of time, it can be changed to a non-synchronized state.

The success time of the random access procedure due to the downlink data arrival event is the point at which the PDCCH for the C-RNTI is received by the terminal 100 in the embodiment of FIG. 2 (contention based random access). And, in the embodiment of FIG. 3 (Non-Contention based Random Access), a random access response (RAR) including a random access preamble identifier (Random Access Preamble Identifier) to the terminal 100 is received by the serving cell. am.

Thereafter, the serving cell of the base station 200 receives a preamble from the terminal 100 (step S12). Then, the serving cell receives a random access response (RAR) based on the received preamble. Response) information is transmitted to the terminal 100 (step S13).

In addition, the terminal 100 receives a message (Msg3) including a C-RNTI MAC layer control element (CE) through uplink control information (UL Grant, scheduling information of uplink resource) obtained from random access response information. ) to the base station 200. (Step S14) After that, the base station 200 identifies the terminal 100 as a C-RNTI MAC layer control element in the random access procedure of FIG. 2 by the downlink data arrival event. and transmits the downlink PDCCH to the C-RNTI (step S15). Then, the base station 200 transmits a command signal (RadioConnectionReconfiguration Command) instructing the radio connection reconfiguration of the serving cell to the terminal 100 as a MAC layer control element. (Step S16)

The terminal 100, which receives a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration as a MAC layer control element, has an indicator Ri value corresponding to the index "SCellIndex i" of the MAC layer control element of the sub-cell group of "1". The PUCCH/SRS resource of the serving cell is reset using the PUCCH/SRS configuration information of the serving cell stored for the serving cell. (Step S17)

3 is a diagram for explaining a method of resuming data transmission/reception in a mobile communication system according to another embodiment of the present invention.

When a downlink data arrival event occurs when the uplink synchronization state with the wirelessly connected terminal 100 in the base station 200 is in a non-synchronized state (step S20), the serving cell transmits a PDCCH order (order). ) instructs the UE 100 to perform random access (RA). (Step S21) In this case, the random access preamble index may be set to a specific (Dedicated) value. Thereafter, the serving cell of the base station 200 receives a preamble from the terminal 100 (step S22).

The base station 200 transmits a random access response (RAR) message to the terminal 100 in the random access procedure of FIG. 3 due to a downlink data arrival event. (Step S23) Then, the base station 200 It transmits a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration of the serving cell to the terminal 100 as a MAC layer control element. (Step S24)

The random access procedure by the downlink data arrival event is a random access procedure triggered by a downlink data arrival event in the primary serving cell (PCell) of the master cell group or the primary serving cell (PSCell) of the sub-cell group in dual connectivity. include

When the random access procedure by the downlink data arrival event is performed in the primary serving cell (PCell) of the master cell group of the terminal 100 , the base station 200 determines the PUCCH of the serving cell set in the master cell group of the terminal 100 . or/and reset the SRS resource (step S25). That is, a command signal (RadioConnectionReconfiguration Command) for instructing radio connection reconfiguration by setting the indicator Ri value corresponding to the index “SCellIndex i” of the corresponding serving cell to “1”. is transmitted to the terminal 100 as a MAC layer control element.

The terminal 100 that receives the command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration as a MAC layer control element has an indicator Ri value corresponding to the index "SCellIndex i" of the MAC layer control element of "1" of the master cell group. For the serving cell, the PUCCH/SRS resource of the corresponding serving cell is reset by using the PUCCH/SRS configuration information stored immediately before releasing the PUCCH/SRS.

On the other hand, when the random access procedure due to the downlink data arrival event is performed in the primary serving cell (PSCell) of the sub-cell group of the terminal 100 , the base station 200 performs the serving set in the sub-cell group of the terminal 100 . Reconfigure the cell's PUCCH and/or SRS resource. That is, by setting the indicator Ri value corresponding to the index "SCellIndex i" of the corresponding serving cell to "1", a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration is transmitted to the terminal 100 as a MAC layer control element.

The terminal 100 receiving a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration as a MAC layer control element has an indicator Ri value corresponding to the index "SCellIndex i" of the MAC layer control element of the sub-cell group of "1". The PUCCH/SRS resource of the serving cell is reset using the PUCCH/SRS configuration information of the serving cell stored for the serving cell.

4 is a diagram for explaining a method of resuming data transmission/reception in a mobile communication system according to another embodiment of the present invention.

The base station 200 is when a time alignment event of the serving cell corresponding to the sTAG (Secondary Timing Advance Group) of the wirelessly connected terminal 100 occurs (step S30), the serving cell is a PDCCH instruction (Order) to the terminal Instructs 100 to perform random access (RA). (Step S31) In this case, the random access preamble index may be set to a specific (Dedicated) value. Thereafter, the serving cell of the base station 200 receives a preamble from the terminal 100 (step S32).

The base station 200 determines that the time advance degree of the uplink channel of the serving cell belonging to the sTAG of the master cell group set in the terminal 100 or the sTAG of the sub-cell group deviates from the reference value or time alignment Random access may be indicated for time alignment of the sTAG based on the timer.

In addition, the base station 200 determines that the SNR measurement value of the SRS signal of the serving cell belonging to the sTAG of the master cell group set in the terminal 100 or the sTAG of the sub-cell group is less than or equal to the reference value for a certain period of time. Random access may be indicated for time alignment.

The terminal 100 transmits a specific preamble signal according to the PDCCH order (Order), and the base station 200 transmits the RAR to the terminal 100 (step S33). Then, the base station 200 transmits the sTAG It transmits a command signal (RadioCConnectionReconfiguration Command) instructing radio connection reconfiguration of the serving cell to which it belongs to the MAC layer control element (step S34).

The random access procedure by the time alignment event of the sTAG includes a random access procedure triggered for time alignment in the sTAG of the master cell group or the sTAG of the sub cell group in dual connectivity.

When the random access procedure by the time alignment event is performed in the sTAG of the master cell group of the terminal, the base station 200 resets the SRS resource of the serving cell set in the sTAG of the master cell group of the terminal 100. (Step S35) That is, by setting the indicator Ri value corresponding to the index "SCellIndex i" of the corresponding serving cell to "1", a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration is transmitted to the terminal 100 as a MAC layer control element. do.

The terminal 100 that receives the command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration as a MAC layer control element has an indicator Ri value corresponding to the index "SCellIndex i" of the MAC layer control element of "1" of the master cell group. For the serving cell, the SRS resource of the serving cell is reset by using the SRS configuration information stored immediately before the release of the SRS.

On the other hand, when the random access procedure by the time alignment event is performed in the sTAG of the sub-cell group of the terminal, the base station 200 resets the SRS resource of the serving cell set in the sTAG of the sub-cell group of the terminal 100. . That is, by setting the indicator Ri value corresponding to the index "SCellIndex i" of the corresponding serving cell to "1", a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration is transmitted to the terminal 100 as a MAC layer control element.

The terminal 100 receiving a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration as a MAC layer control element has an indicator Ri value corresponding to the index "SCellIndex i" of the MAC layer control element of the sub-cell group of "1". By using the SRS configuration information of the serving cell stored for the serving cell, the SRS resource of the corresponding serving cell is reset.

A command signal (RadioConnectionReconfiguration Command) for instructing radio connection reconfiguration, as shown in FIG. 5 , in the MAC layer control element, a reconfiguration instruction corresponding to the index “SCellIndex i” of the serving cell is configured as Ri.

In addition, the MAC layer control element, which is a command signal (RadioConnectionReconfiguration Command) instructing PUCCH/SRS resource reconfiguration, is unique that is distinguished from the LCID (Logical Channel Identifier) definition value for the downlink SCH (Shared Channel) as shown in FIG. has an LCID of

The MAC layer control element, which is a command signal (RadioConnectionReconfiguration Command) instructing radio connection reconfiguration transmitted from the base station 200 to the terminal 100, is a fixed size MAC PDU (Protocol Data Unit) subheader including a unique LCID. will be used

As described above, the embodiment of the present invention resets the PUCCH and/or SRS resource upon completion of the random access procedure for resuming data transmission and reception, thereby providing the base station 200 or carrier aggregation (CA) or/or dual connectivity. CQI and SR transmission and reception and SRS signal transmission and reception are possible through PUCCH without delay between the supporting base station 200 and the terminal 100 .

Meanwhile, FIG. 7 illustrates a base station 200 and a terminal 100 that can be applied to an embodiment of the present invention.

A mobile communication system according to an embodiment of the present invention includes a terminal 100 and a base station 200 .

Here, the terminal 100 includes a processor 110 , a memory 120 , and a radio frequency (RF) unit 130 . The processor 110 may be configured to implement the above random access procedure and/or methods proposed in an embodiment of the present invention. The memory 120 is connected to the processor 110 and stores various information related to the operation of the processor 110 . In addition, the RF unit 130 is connected to the processor 110 and transmits and/or receives a wireless signal.

That is, in the embodiment of the present invention, the processor 110 of the terminal 100 sets the PUCCH and SRS of the serving cell of the Master Cell Group (MCG) or the serving cell of the Secondary Cell Group (SCG). When the RRC configuration message or the reset message including the information is received, PUCCH and SRS configuration information for each serving cell is stored in the memory 120 .

In addition, the processor 110 of the terminal 100 maintains preset PUCCH and SRS configuration information of the corresponding serving cell in the PUCCH and SRS resource release procedure, and changes the PUCCH and SRS resources of the corresponding serving cell to a release state.

In addition, the base station 200 may include a primary serving cell (PCell) of the master cell group (210, MCG; Master Cell Group) or a primary serving cell (PSCell) of the sub cell group (220, SCG; Sub Cell Group). have. One or more cells exist in one base station 200 to provide a downlink or uplink transmission service to the terminal 100 . In addition, the base station 200 includes a processor 230 , a memory 240 , and a radio frequency (RF) unit 250 .

Here, the processor 230 may be configured to implement the above random access procedure and/or methods proposed in an embodiment of the present invention. In addition, the memory 240 is connected to the processor 230 and stores various information related to the operation of the processor 240 . The RF unit 250 is connected to the processor 230 and transmits and/or receives wireless signals. The terminal 100 and the base station 200 may have a single antenna or multiple antennas.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: terminal
200: base station
110, 230 : Processor
120, 240: memory
130, 250: RF unit

Claims (19)

transmitting a preamble from the terminal to the base station and receiving random access response information corresponding thereto when an uplink data arrival event occurs while the uplink of the serving cell is asynchronous;
transmitting uplink data to the base station through scheduling information of uplink resources obtained from the random access response information;
receiving a physical downlink control channel including uplink control information from the base station; and
Receiving from the base station a radio connection reconfiguration command MAC layer control element (RadioConnectionReconfiguration Command MAC Control Element) for instructing resource reconfiguration, the reconfiguration indicator (Reconfiguration Indicator, Ri) value included in the radio connection reconfiguration command MAC layer control element A method of resuming data transmission/reception in a mobile communication system, comprising resetting a resource of a serving cell having an index corresponding to . The method of claim 1, wherein transmitting the uplink data to the base station through scheduling information of uplink resources obtained from the random access response information comprises:
Transmitting a Cell-Radio Network Temporary Identifier (C-RNTI) Medium Access Control (MAC) layer control element and a Buffer Status Report (BSR) to the serving cell through the scheduling information of the uplink resource obtained from the random access response information. A method of resuming data transmission/reception in a mobile communication system, comprising: The method of claim 1, wherein the resource is
A method for resuming data transmission/reception in a mobile communication system, comprising at least one of a physical uplink control channel and a sounding reference signal. The method of claim 1,
Storing a physical uplink control channel and sounding reference signal configuration information in the terminal upon reception of a radio resource configuration message or a reset message for the serving cells of the master cell group and the serving cells of the sub-cell group A method of resuming data transmission and reception in a mobile communication system according to The method of claim 1,
Resuming data transmission/reception in a mobile communication system, comprising the step of maintaining preset physical uplink control channel and sounding reference signal information of the serving cell in the resource release procedure and changing the resource to a release state Way. transmitting a random access signal from the base station to the terminal when a downlink data arrival event occurs in the downlink of the serving cell asynchronously;
transmitting a preamble from the terminal to the base station and receiving random access response information corresponding thereto;
transmitting uplink data to the base station through scheduling information of uplink resources obtained from the random access response information;
receiving a physical downlink control channel from the base station; and
Receiving from the base station a radio connection reconfiguration command MAC layer control element (RadioConnectionReconfiguration Command MAC Control Element) for instructing resource reconfiguration, and corresponding to the reset indicator (Ri) value included in the radio connection reconfiguration command MAC layer control element A method of resuming data transmission/reception in a mobile communication system, comprising resetting a resource of a serving cell having an index. 7. The method of claim 6, wherein the random access signal is
A method of resuming data transmission/reception in a mobile communication system, wherein the preamble index is set to a value of “0”. 7. The method of claim 6, wherein the random access signal is
A method of resuming data transmission/reception in a mobile communication system, characterized in that the preamble index is set to a specific value. The method of claim 6, wherein transmitting the uplink data to the base station through scheduling information of uplink resources obtained from the random access response information comprises:
Transmitting a Cell-Radio Network Temporary Identifier (C-RNTI) Medium Access Control (MAC) layer control element and a Buffer Status Report (BSR) to the serving cell through the scheduling information of the uplink resource obtained from the random access response information. A method of resuming data transmission/reception in a mobile communication system, comprising: 7. The method of claim 6,
Storing a physical uplink control channel and sounding reference signal configuration information in the terminal upon reception of a radio resource configuration message or a reset message for the serving cells of the master cell group and the serving cells of the sub-cell group A method of resuming data transmission and reception in a mobile communication system according to 7. The method of claim 6,
Resuming data transmission/reception in a mobile communication system, comprising the step of maintaining preset physical uplink control channel and sounding reference signal information of the serving cell in the resource release procedure and changing the resource to a release state Way. When a time alignment event of a serving cell corresponding to a Secondary Timing Advance Group (sTAG) occurs, transmitting a random access signal from the base station to the terminal;
transmitting a preamble from the terminal to the base station and receiving random access response information corresponding thereto; and
Receiving from the base station a radio connection reconfiguration command MAC layer control element (RadioConnectionReconfiguration Command MAC Control Element) for instructing resource reconfiguration, and corresponding to the reset indicator (Ri) value included in the radio connection reconfiguration command MAC layer control element A method of resuming data transmission/reception in a mobile communication system, comprising resetting a resource of a serving cell having an index. 13. The method of claim 12, wherein the resource is
A method for resuming data transmission/reception in a mobile communication system, comprising a sounding reference signal. 13. The method of claim 12, wherein the random access signal is
A method of resuming data transmission/reception in a mobile communication system, characterized in that the preamble index is set to a specific value. 13. The method of claim 12,
In a mobile communication system, comprising: storing sounding reference signal configuration information in the terminal upon receiving a radio resource configuration message or a reset message for the serving cells of the master cell group and the serving cells of the sub-cell group How to resume sending and receiving data. 13. The method of claim 12,
The method of resuming data transmission/reception in a mobile communication system, comprising the step of maintaining preset sounding reference signal information of the serving cell in the resource release procedure and changing the resource to a release state. delete 13. The method of claim 12, wherein the radio connection reset command MAC layer control element
A method of resuming data transmission/reception in a mobile communication system, characterized in that a fixed-size MAC Protocol Data Unit (PDU) subheader including a unique Logical Channel Identifier (LCID) is used. a memory for storing a physical uplink control channel and sounding reference signal configuration information upon reception of a radio resource configuration message or a reset message for the serving cells of the master cell group and the serving cells of the sub-cell group;
a radio frequency unit for performing mutual communication with a base station including serving cells of the master cell group and serving cells of the sub cell group; and
When a radio connection reconfiguration command MAC layer control element for instructing resource reconfiguration is received from the base station, using the setting information stored in the memory, the radio connection reconfiguration command MAC layer control element included in the The apparatus for resuming data transmission/reception in a mobile communication system, comprising a processor for resetting a resource of a serving cell having an index corresponding to a reset indicator (Ri) value.

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