CN115118796A - Timing offset updating method and device, terminal and network side equipment - Google Patents
Timing offset updating method and device, terminal and network side equipment Download PDFInfo
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Abstract
The invention provides a method, a device, a terminal and network side equipment for updating timing offset, wherein the method comprises the following steps: the terminal sends a media access control layer control unit MAC CE to the network side equipment, wherein the MAC CE comprises: the logical channel identification LCID and the updating value information of the timing offset; the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset; the embodiment of the invention carries the updating value information of the timing offset through the MAC CE and reports the updating value information to the network side equipment to ensure that the terminal and the network side equipment understand the timing offset consistently.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a terminal, and a network device for updating a timing offset.
Background
In the prior art, to ensure uplink timing (UL timing), when a base station sends downlink data to a terminal, it is necessary to receive HARQ feedback from the terminal after K1 timeslots. Or, when the base station allocates an uplink resource (UL Grant) to the terminal, it needs to receive data sent by the terminal on the allocated UL Grant after K2 timeslots.
UL timing in existing protocols is mainly applicable to terrestrial networks, and is only of the order of a few milliseconds at best. However, in non-terrestrial network communication, the satellite-to-ground delay (especially, the single-way delay in geosynchronous orbit GEO scenario reaches 120-.
The initial access phase may now use the timing offset (K) offset ) Indicating at least K at the cell level by means of a system message offset Value (i.e. the whole cell broadcasts a larger K offset A value). But for K after initial access offset The problem of update has not yet been agreed. Possible technical process is that the terminal reports Timing Advance (TA) in Msg 3 (four-step random access) or Msg B (two-step random access), and the base station determines K by realizing offset Then, the base station sets K to be any one of Radio Resource Control (RRC), Media Access Control Element (MAC CE), and Downlink Control Information (DCI) through any one of methods of RRC, MAC CE, and DCI offset And informing the terminal. In a connected state, the positions of the terminal and the satellite are probably in a rapidly changing state, so the method needs the terminal to always report the TA, and the signaling overhead is high; simultaneous base station indication K offset The mode signaling overhead is also large.
Disclosure of Invention
The invention aims to provide a timing offset updating method, a timing offset updating device, a terminal and network side equipment, and aims to solve the problem that the signaling overhead for updating the timing offset is high in the prior art.
In order to solve the above problem, an embodiment of the present invention provides a timing offset updating method, including:
the terminal sends a media access control layer control unit MAC CE to the network side equipment, wherein the MAC CE comprises: the logical channel identification LCID and the updating value information of the timing offset;
and the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
Before the terminal sends the MAC CE to the network side device, the method further includes:
the terminal receives common offset information sent by the system message, wherein the common offset information is at a cell level or a beam level.
Wherein the updated value information of the timing offset is further used for indicating the updating of the offset of K1, and/or K2, and/or K0;
k1 is a time slot interval between a Physical Downlink Shared Channel (PDSCH) and a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
Wherein the update value information of the timing offset includes at least one of:
indication information indicating that an update value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
Wherein the index information of the update value of the timing offset includes:
index information corresponding to the update values of different timing offsets defined by the protocol; alternatively, the first and second electrodes may be,
and receiving index information corresponding to the update values of the different offsets sent by the network side equipment.
Wherein the granularity of the update value of the timing offset is:
symbol granularity, or slot granularity, or system frame granularity.
Wherein the method further comprises:
after the MAC CE is sent, a first timer is started or reset;
if the first timer is not overtime and the terminal receives a new data indication NDI (network data interface) overturning indication, determining that the updating of the timing offset is effective; or, if the first timer is not overtime, and the terminal receives a confirmation instruction sent by the network side equipment to confirm that the timing offset update is received, determining that the update of the timing offset is effective.
Wherein the method further comprises:
and if the first timer is overtime and the terminal does not receive the NDI overturning indication or the confirmation indication, determining that the updating of the timing offset is not effective.
Wherein, if the update of the timing offset is not effective, the method further comprises:
and retransmitting the MAC CE to the network side equipment.
The embodiment of the invention also provides a timing offset updating method, which comprises the following steps:
the method comprises the following steps that network side equipment receives a media access control layer control unit (MAC CE) sent by a terminal, wherein the MAC CE comprises the following components: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
Before the network side device receives the MAC CE sent by the terminal, the method further includes:
and the network side equipment sends the common offset information to the terminal through a system message, wherein the common offset information is at a cell level or a beam level.
Wherein the updated value information of the timing offset is further used for indicating the updating of the offset of K1, and/or K2, and/or K0;
wherein, K1 is the time slot interval between the PDSCH and the HARQ-ACK feedback of the hybrid automatic repeat request acknowledgement; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
Wherein the update value information of the timing offset includes at least one of:
indication information indicating that an update value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
Wherein the index information of the update value of the timing offset includes:
index information corresponding to the update values of different timing offsets defined by the protocol; alternatively, the first and second electrodes may be,
and receiving index information corresponding to the update values of the different offsets sent by the network side equipment.
Wherein the granularity of the update value of the timing offset is:
symbol granularity, or slot granularity, or system frame granularity.
Wherein the method further comprises:
after receiving the MAC CE, starting or resetting a first timer;
if the first timer is not overtime and the network side equipment sends a new data indication NDI (network data indicator) overturning indication to the terminal, and the updating of the timing offset is determined to be effective; or, if the first timer is not overtime and the network side device confirms to the terminal that the confirmation instruction of the timing offset update is received, determining that the update of the timing offset is effective.
Wherein the method further comprises:
and if the first timer is overtime and the network side equipment does not send the NDI overturning indication or the confirmation indication, determining that the updating of the timing offset is not effective.
Wherein, if the update of the timing offset is not effective, the method further comprises:
and receiving the MAC CE retransmitted by the terminal.
Wherein the method further comprises:
and determining the updated timing offset according to the updated value information of the timing offset and the last used timing offset included in the MAC CE.
The embodiment of the present invention further provides a timing offset updating apparatus, which is applied to a terminal, and includes:
a first sending module, configured to send a media access control layer control element MAC CE to a network side device, where the MAC CE includes: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
An embodiment of the present invention further provides a terminal, including a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:
sending a media access control layer control element (MAC CE) to a network side device, wherein the MAC CE comprises: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
An embodiment of the present invention further provides a timing offset updating apparatus, which is applied to a network side device, and includes:
a first receiving module, configured to receive a media access control layer control element MAC CE sent by a terminal, where the MAC CE includes: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
An embodiment of the present invention further provides a network side device, including a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:
receiving a media access control layer control unit (MAC CE) sent by a terminal, wherein the MAC CE comprises: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
The embodiment of the present invention further provides a communication device, which includes a memory, a processor, and a program stored in the memory and capable of running on the processor, where the processor implements the timing offset updating method as described above when executing the program.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the timing offset updating method described above.
The technical scheme of the invention at least has the following beneficial effects:
in the timing offset updating method, the timing offset updating device, the terminal and the network side equipment of the embodiment of the invention, the updating value information of the timing offset is loaded through the MAC CE and reported to the network side equipment to ensure that the terminal and the network side equipment understand the timing offset consistently.
Drawings
Fig. 1 is a schematic diagram illustrating a step of a timing offset updating method according to an embodiment of the present invention;
fig. 2 is a second schematic diagram illustrating steps of a timing offset updating method according to an embodiment of the invention;
fig. 3 is a diagram illustrating an example of a structure of a MAC CE in a timing offset updating method according to an embodiment of the present invention;
fig. 4 is a second exemplary diagram illustrating a structure of a MAC CE in the timing offset updating method according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a timing offset updating apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 7 is a second schematic structural diagram of a timing offset update apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a network-side device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a timing offset updating method, including:
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset. The LCID may be newly defined or may multiplex already defined LCIDs, and is not particularly limited herein.
The terminal calculates the current timing offset K according to the self-position information and the satellite ephemeris information offset_new Relative to the last used K offset_old Is detected, or is positive or negative or 0, the change value is indicated by the update value information of the timing offset.
In this embodiment of the present invention, before the terminal sends the MAC CE to the network side device, the method further includes:
the terminal receives common offset information sent by the system message, wherein the common offset information is at a cell level or a beam level.
The terminal may determine update value information of the timing offset according to the common offset information.
As an alternative embodiment, the updated value information of the timing offset is also used to indicate the update of the offset of K1, and/or K2, and/or K0;
k1 is a time slot interval between a Physical Downlink Shared Channel (PDSCH) and a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
In this embodiment of the present invention, the update value information of the timing offset includes at least one of:
indicating that the updated value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
Correspondingly, the manner in which the MAC CE carries the update value information of the timing offset includes:
the first method is as follows: the update value information of the timing offset includes: indication information indicating that the updated value of the timing offset is a positive or negative number or 0, and an absolute value of the updated value of the timing offset.
For example, 1bit as a positive or negative indicator bit, followed by Nbit indicating the timing offset K offset The absolute value of the update value δ.
The second method comprises the following steps: the update value information of the timing offset includes: index information of an update value of the timing offset. For example, the corresponding timing offset K is directly indicated by means of an index offset The actual value of the update value δ.
Wherein the index information of the update value of the timing offset includes:
index information corresponding to the update values of different timing offsets defined by the protocol; alternatively, the first and second electrodes may be,
and receiving index information corresponding to the update values of the different offsets sent by the network side equipment.
In other words, in the embodiment of the present invention, in order to ensure that the terminal and the network side device understand consistency of the corresponding relationship between the index information and the update value, the different index information corresponding to the update values of different timing offsets, the corresponding relationship between the update value of the timing offset and the index information is defined by a protocol or sent to the terminal by the network side device.
As an alternative embodiment, the granularity of the update value of the timing offset is:
symbol (symbol) granularity, or slot (slot) granularity, or system frame (frame) granularity.
The network side equipment receives the timing offset K reported by the terminal offset After updating the value delta, K is calculated offset_new ＝K offset_old + delta, the base station does not need to send the downlink indication signaling again, and meanwhile, the base station can ensure that the K terminal pair carries out K offset With a consistent understanding.
In order to avoid adverse effects caused by that the network side device does not receive the MAC CE information or the MAC CE reported by the terminal is decoded incorrectly, the embodiment of the present invention introduces a first timer for limiting the occurrence of an error condition. The first timer is set by the network side equipment according to the satellite-ground transmission delay and the processing capacity of the network side equipment.
Correspondingly, the method further comprises the following steps:
after the MAC CE is sent, a first timer is started or reset;
for the newly transmitted situation, if the first timer is not overtime and the terminal receives a new data indication NDI (network data interface) overturning indication, determining that the updating of the timing offset is effective; or, for the retransmission, if the first timer is not timed out and the terminal receives an acknowledgement indication that the timing offset update is received, the terminal determines that the timing offset update is valid.
It should be noted that the acknowledgement indication may be a new indication signaling (which may be carried through an RRC signaling or a MAC CE); if there is data interaction between the network side device and the terminal, the acknowledgement indication may be carried in the associated signaling.
As an alternative embodiment, the method further comprises:
and if the first timer is overtime and the terminal does not receive the NDI overturning indication or the confirmation indication, determining that the updating of the timing offset is not effective.
Further, if the update of the timing offset is not valid, the method further includes:
and retransmitting the MAC CE to the network side equipment, wherein the MAC CE comprises: the logical channel identifies LCID and update value information of timing offset.
In the embodiment of the invention, the updating value information of the timing offset is loaded through the MAC CE and reported to the network side equipment to ensure that the terminal and the network side equipment understand the timing offset consistently. Meanwhile, the occurrence of adverse effects caused by that the network side equipment does not receive or the MAC CE reported by the terminal is decoded wrongly is avoided by introducing a timer.
As shown in fig. 2, an embodiment of the present invention further provides a timing offset updating method, including:
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
The terminal calculates the current timing offset K according to the self-position information and the satellite ephemeris information offset_new Relative to the last used K offset_old Is indicated with the update value information of the timing offset.
Optionally, before the network side device receives the MAC CE sent by the terminal, the method further includes:
and the network side equipment sends the common offset information to the terminal through a system message, wherein the common offset information is at a cell level or a beam level.
As an alternative embodiment, the updated value information of the timing offset is also used to indicate the update of the offset of K1, and/or K2, and/or K0;
k1 is a time slot interval between a Physical Downlink Shared Channel (PDSCH) and a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
In this embodiment of the present invention, the update value information of the timing offset includes at least one of:
indication information indicating that an update value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
Correspondingly, the manner in which the MAC CE carries the update value information of the timing offset includes:
the first method is as follows: the update value information of the timing offset includes: indication information indicating that the updated value of the timing offset is a positive or negative number or 0, and an absolute value of the updated value of the timing offset.
For example, 1bit is used as a positive and negative indicator bit, and the following N bits indicate the timing offset K offset The absolute value of the update value δ.
The second method comprises the following steps: the update value information of the timing offset includes: index information of an update value of the timing offset. For example, the corresponding timing offset K is directly indicated by means of an index offset The actual value of the update value δ.
As an alternative embodiment, the granularity of the update value of the timing offset is:
symbol (symbol) granularity, or slot (slot) granularity, or system frame (frame) granularity.
Wherein the index information of the update value of the timing offset includes:
index information corresponding to the update values of different timing offsets defined by the protocol; alternatively, the first and second electrodes may be,
and receiving index information corresponding to the update values of the different offsets sent by the network side equipment.
In other words, in the embodiment of the present invention, in order to ensure that the terminal and the network side device understand consistency of the corresponding relationship between the index information and the update value, the corresponding relationship between the update value of the timing offset and the index information is defined by a protocol or sent to the terminal by the network side device.
In order to avoid adverse effects caused by that the network side device does not receive the MAC CE information or the MAC CE reported by the terminal is decoded incorrectly, the embodiment of the present invention introduces a first timer for limiting the occurrence of an error condition. The first timer is set by the network side equipment according to the satellite-ground transmission delay and the processing capacity of the network side equipment.
Correspondingly, the method further comprises the following steps:
after receiving the MAC CE, starting or resetting a first timer;
for the newly transmitted situation, if the first timer is not overtime, and the network side equipment sends a new data indication NDI (network side identity) turning indication to the terminal, the updating of the timing offset is determined to be effective; or, for the retransmission, if the first timer is not timed out and the network side device confirms to the terminal that the acknowledgement indication of the timing offset update is received, determining that the update of the timing offset is effective.
It should be noted that the acknowledgement indication may be a new indication signaling (which may be carried through an RRC signaling or a MAC CE); if there is data interaction between the network side device and the terminal, the acknowledgement indication may be carried in the associated signaling.
As an alternative embodiment, the method further comprises:
and if the first timer is overtime and the network side equipment does not send the NDI overturning indication or the confirmation indication, determining that the updating of the timing offset is not effective.
Further, if the update of the timing offset is not valid, the method further includes:
receiving the MAC CE retransmitted by the terminal, wherein the MAC CE comprises: the logical channel identifies LCID and update value information of timing offset.
As an alternative embodiment, the method further comprises:
and determining the updated timing offset according to the updated value information of the timing offset and the timing offset used last time in the MAC CE.
The network side equipment receives the timing offset K reported by the terminal offset After updating the value delta, K is calculated offset_new ＝K offset_old + delta, the base station does not need to send the downlink indication signaling again, and meanwhile, the base station can ensure that the K terminal pair carries out K offset With a consistent understanding.
In the embodiment of the invention, the updating value information of the timing offset is loaded through the MAC CE and reported to the network side equipment to ensure that the terminal and the network side equipment understand the timing offset consistently. Meanwhile, the occurrence of adverse effects caused by the fact that the network side equipment does not receive the MAC CE reported by the terminal or the MAC CE reported by the terminal is decoded and mistakenly is avoided by introducing a timer.
In order to more clearly describe the timing offset updating method provided by the embodiment of the present invention, the following description is made with reference to two examples.
Example one
Taking the subcarrier spacing of 15kHz as an example, the timing offset K offset The first indication mode of the update value δ is as follows: using 1bit as positive and negative indication bits, followed by a timing offset K offset The absolute value of the update value δ.
K offset An example of an updated MAC CE, as shown in fig. 3:
the LCID is a logical channel identifier and occupies 6 bits, 33-51 in the current LCID is a reserved value, and the timing offset K used for the bearing terminal to report to the network side equipment offset The LCID of the MAC CE of the updated value of (a) may take any of values 33-51.
P/N (Positive/Negative) is a Positive and Negative indicator bit, 1 represents Positive, 0 represents Negative;
ΔK offset indicates the timing offset K offset Relative to the last used K offset K, considering that the maximum differential delay in a cell is approximately around 16ms, K is offset Is at most 32 ms. A minimum of 5 bits in the MAC CE should be reserved to ensure that the indicated slot range is sufficient. Or the system frame can be used as the granularity indication, about 3 bits of overhead can be saved. Or the symbol may be used as granularity indication, and the granularity needs to increase about 4 bits of overhead compared with the slot indication granularity, but the indication precision can be improved.
Example two
Take subcarrier spacing of 15kHz as an example, for K offset The second indication mode of the update value δ is as follows: directly indicating corresponding K by means of index offset The actual value of the update value δ;
k offset As shown in fig. 4:
the LCID is a logical channel identifier and occupies 6 bits, 33-51 in the current LCID is a reserved value, and the timing offset K used for the bearing terminal to report to the network side equipment offset The LCID of the MAC CE of the updated value of (a) may take any of values 33-51.
ΔK offset Indicating a timing offset K offset Relative to the last used K offset Considering that the maximum differential delay in a cell is approximately 16ms or so, then K offset Is at most 32 ms. A minimum of 5 bits in the MAC CE should be reserved to ensure that the indicated slot range is sufficient. Or the system frame can be used as the granularity indication, about 3 bits of overhead can be saved. Or the symbol can be used as granularity indication, and the granularity needs to be increased by about 4 bits compared with the slot indication granularity, but the indication precision can be improved.
As shown in fig. 5, an embodiment of the present invention further provides a timing offset updating apparatus, which is applied to a terminal, and includes:
a first sending module 501, configured to send a media access control layer control element MAC CE to a network side device, where the MAC CE includes: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
As an optional embodiment, before the terminal sends the MAC CE to the network side device, the apparatus further includes:
and the system message receiving module is used for receiving the common offset information sent by the system message, wherein the common offset information is at a cell level or a beam level.
As an alternative embodiment, the updated value information of the timing offset is also used to indicate the update of the offset of K1, and/or K2, and/or K0;
k1 is a time slot interval between a Physical Downlink Shared Channel (PDSCH) and a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
As an alternative embodiment, the updated value information of the timing offset includes at least one of:
indication information indicating that an update value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
As an alternative embodiment, the index information of the update value of the timing offset includes:
defining index information corresponding to the update values of different timing offsets by the protocol; alternatively, the first and second electrodes may be,
and receiving index information corresponding to the update values of the different offsets sent by the network side equipment.
As an alternative embodiment, the granularity of the update value of the timing offset is:
symbol granularity, or slot granularity, or system frame granularity.
As an alternative embodiment, the apparatus further comprises:
the second sending module is used for starting or resetting the first timer after the MAC CE is sent;
a first determining module, configured to determine that an update of the timing offset is valid if the first timer is not overtime and the terminal receives a new data indication NDI flip indication; or, if the first timer is not overtime, and the terminal receives a confirmation instruction sent by the network side equipment to confirm that the timing offset update is received, determining that the update of the timing offset is effective.
As an optional embodiment, the apparatus further comprises:
and a second determining module, configured to determine that the update of the timing offset is not in effect if the first timer is overtime and the terminal does not receive the NDI flip indication or the acknowledgement indication.
As an alternative embodiment, if the update of the timing offset is not valid, the apparatus further comprises:
and a third sending module, configured to resend the MAC CE to the network side device.
In the embodiment of the invention, the updating value information of the timing offset is loaded through the MAC CE and reported to the network side equipment to ensure that the terminal and the network side equipment understand the timing offset consistently. Meanwhile, the occurrence of adverse effects caused by that the network side equipment does not receive or the MAC CE reported by the terminal is decoded wrongly is avoided by introducing a timer.
It should be noted that the timing offset updating apparatus provided in the embodiments of the present invention is an apparatus capable of executing the timing offset updating method, and all embodiments of the timing offset updating method are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 6, an embodiment of the present invention further provides a terminal, which includes a processor 600, a transceiver 610 and a user interface 620, where the transceiver 610 receives and transmits data under the control of the processor 600, and the processor 600 is configured to perform the following operations:
sending a media access control layer control unit (MAC CE) to a network side device, wherein the MAC CE comprises: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
As an optional embodiment, before the terminal sends the MAC CE to the network-side device, the processor is further configured to:
and receiving common offset information sent by the system message, wherein the common offset information is at a cell level or a beam level.
As an alternative embodiment, the updated value information of the timing offset is also used to indicate the update of the offset of K1, and/or K2, and/or K0;
k1 is a time slot interval between a Physical Downlink Shared Channel (PDSCH) and a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
As an alternative embodiment, the updated value information of the timing offset includes at least one of:
indication information indicating that an update value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
As an alternative embodiment, the index information of the updated value of the timing offset includes:
defining index information corresponding to the update values of different timing offsets by the protocol; alternatively, the first and second electrodes may be,
and receiving index information corresponding to the update values of the different offsets sent by the network side equipment.
As an alternative embodiment, the granularity of the update value of the timing offset is:
symbol granularity, or slot granularity, or system frame granularity.
As an alternative embodiment, the processor 600 is further configured to perform the following operations:
after the MAC CE is sent, a first timer is started or reset;
if the first timer is not overtime and the terminal receives a new data indication NDI (network data interface) overturning indication, determining that the updating of the timing offset is effective; or, if the first timer is not overtime, and the terminal receives a confirmation instruction sent by the network side equipment to confirm that the timing offset update is received, determining that the update of the timing offset is effective.
As an alternative embodiment, the processor 600 is further configured to perform the following operations:
and if the first timer is overtime and the terminal does not receive the NDI overturning indication or the confirmation indication, determining that the updating of the timing offset is not effective.
As an alternative embodiment, if the update of the timing offset is not valid, the processor 600 is further configured to:
and retransmitting the MAC CE to the network side equipment.
In the embodiment of the invention, the updating value information of the timing offset is loaded through the MAC CE and reported to the network side equipment to ensure that the terminal and the network side equipment understand the timing offset consistently. Meanwhile, the occurrence of adverse effects caused by the fact that the network side equipment does not receive the MAC CE reported by the terminal or the MAC CE reported by the terminal is decoded and mistakenly is avoided by introducing a timer.
It should be noted that, the terminal provided in the embodiments of the present invention is a terminal capable of executing the above timing offset updating method, and all embodiments of the above timing offset updating method are applicable to the terminal and can achieve the same or similar beneficial effects.
As shown in fig. 7, an embodiment of the present invention further provides a timing offset updating apparatus, applied to a network side device, including:
a first receiving module 701, configured to receive a media access control layer control element MAC CE sent by a terminal, where the MAC CE includes: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
As an optional embodiment, before the network side device receives the MAC CE sent by the terminal, the apparatus further includes:
and the system message sending module is used for sending the common offset information to the terminal through the system message, wherein the common offset information is at a cell level or a beam level.
As an alternative embodiment, the updated value information of the timing offset is also used to indicate the update of the offset of K1, and/or K2, and/or K0;
k1 is a time slot interval between a Physical Downlink Shared Channel (PDSCH) and a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
As an alternative embodiment, the updated value information of the timing offset includes at least one of:
indication information indicating that an update value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
As an alternative embodiment, the index information of the update value of the timing offset includes:
defining index information corresponding to the update values of different timing offsets by the protocol; alternatively, the first and second liquid crystal display panels may be,
and receiving index information corresponding to the update values of the different offsets sent by the network side equipment.
As an alternative embodiment, the granularity of the update value of the timing offset is:
symbol granularity, or slot granularity, or system frame granularity.
As an alternative embodiment, the apparatus further comprises:
the second receiving module is used for starting or resetting the first timer after receiving the MAC CE;
a third determining module, configured to determine that the updating of the timing offset is effective if the first timer is not overtime and the network side device sends a new data indication NDI flip indication to the terminal; or, if the first timer is not overtime and the network side device confirms to the terminal that the confirmation instruction of the timing offset update is received, determining that the update of the timing offset is effective.
As an alternative embodiment, the apparatus further comprises:
a fourth determining module, configured to determine that the update of the timing offset is not in effect if the first timer is overtime and the network side device does not send an NDI rollover indication or an acknowledgement indication.
As an alternative embodiment, if the update of the timing offset is not valid, the apparatus further comprises:
and the third receiving module is used for receiving the MAC CE retransmitted by the terminal.
As an alternative embodiment, the apparatus further comprises:
a fifth determining module, configured to determine an updated timing offset according to the update value information of the timing offset included in the MAC CE and the timing offset used last time.
In the embodiment of the invention, the updating value information of the timing offset is loaded through the MAC CE and reported to the network side equipment to ensure that the terminal and the network side equipment understand the timing offset consistently. Meanwhile, the occurrence of adverse effects caused by that the network side equipment does not receive or the MAC CE reported by the terminal is decoded wrongly is avoided by introducing a timer.
It should be noted that the timing offset updating apparatus provided in the embodiments of the present invention is an apparatus capable of executing the timing offset updating method, and all embodiments of the timing offset updating method are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 8, an embodiment of the present invention further provides a network-side device, including a processor 800 and a transceiver 810, where the transceiver 810 receives and transmits data under the control of the processor 800, and the processor 800 is configured to perform the following operations:
receiving a media access control layer control unit (MAC CE) sent by a terminal, wherein the MAC CE comprises: the logic channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
As an optional embodiment, before the network side device receives the MAC CE sent by the terminal, the processor is further configured to perform the following operations:
and sending the common offset information to the terminal through a system message, wherein the common offset information is at a cell level or a beam level.
As an alternative embodiment, the updated value information of the timing offset is also used to indicate the update of the offset of K1, and/or K2, and/or K0;
k1 is a time slot interval between a Physical Downlink Shared Channel (PDSCH) and a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
As an alternative embodiment, the updated value information of the timing offset includes at least one of:
indication information indicating that an update value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
As an alternative embodiment, the index information of the update value of the timing offset includes:
defining index information corresponding to the update values of different timing offsets by the protocol; alternatively, the first and second liquid crystal display panels may be,
and receiving index information corresponding to the update values of the different offsets sent by the network side equipment.
As an alternative embodiment, the granularity of the update value of the timing offset is:
symbol granularity, or slot granularity, or system frame granularity.
As an alternative embodiment, the processor 800 is further configured to perform the following operations:
after receiving the MAC CE, starting or resetting a first timer;
if the first timer is not overtime, and the network side equipment sends a new data indication NDI (network side identity) turning indication to the terminal, and the updating of the timing offset is determined to be effective; or, if the first timer is not overtime and the network side device confirms to the terminal that the confirmation instruction of the timing offset update is received, determining that the update of the timing offset is effective.
As an alternative embodiment, the processor 800 is further configured to perform the following operations:
and if the first timer is overtime and the network side equipment does not send the NDI overturning indication or the confirmation indication, determining that the updating of the timing offset is not effective.
As an alternative embodiment, the processor 800 is further configured to perform the following operations:
and receiving the MAC CE retransmitted by the terminal.
As an alternative embodiment, the processor 800 is further configured to perform the following operations:
and determining the updated timing offset according to the updated value information of the timing offset and the last used timing offset included in the MAC CE.
In the embodiment of the invention, the updating value information of the timing offset is loaded through the MAC CE and reported to the network side equipment to ensure that the terminal and the network side equipment understand the timing offset consistently. Meanwhile, the occurrence of adverse effects caused by that the network side equipment does not receive or the MAC CE reported by the terminal is decoded wrongly is avoided by introducing a timer.
It should be noted that the network side device provided in the embodiments of the present invention is a network side device capable of executing the timing offset updating method, and all embodiments of the timing offset updating method are applicable to the network side device and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a communication device, where the communication device is a terminal or a network side device, and includes a memory, a processor, and a computer program that is stored in the memory and can be run on the processor, where the processor implements each process in the above-described timing offset update method embodiment when executing the program, and can achieve the same technical effect, and details are not described here to avoid repetition.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the above-described embodiment of the timing offset updating method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (25)
1. A method for updating a timing offset, comprising:
the terminal sends a media access control layer control unit MAC CE to the network side equipment, wherein the MAC CE comprises: the logic channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
2. The method according to claim 1, wherein before the terminal sends the MAC CE to the network side device, the method further comprises:
the terminal receives common offset information sent by the system message, wherein the common offset information is at a cell level or a beam level.
3. The method according to claim 1, wherein the updated value information of the timing offset is further used for indicating the updating of the offset of K1, and/or K2, and/or K0;
k1 is a time slot interval between a Physical Downlink Shared Channel (PDSCH) and a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
4. The method of claim 1, wherein the updated value information of the timing offset comprises at least one of:
indication information indicating that an update value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
5. The method of claim 4, wherein the index information of the updated value of the timing offset comprises:
index information corresponding to the update values of different timing offsets defined by the protocol; alternatively, the first and second electrodes may be,
and receiving index information corresponding to the updating values of the different offsets sent by the network side equipment.
6. The method of claim 4, wherein the granularity of the update value of the timing offset is:
symbol granularity, or slot granularity, or system frame granularity.
7. The method of claim 1, further comprising:
after the MAC CE is sent, a first timer is started or reset;
if the first timer is not overtime and the terminal receives a new data indication NDI (network data interface) overturning indication, determining that the updating of the timing offset is effective; or, if the first timer is not overtime, and the terminal receives a confirmation instruction sent by the network side equipment to confirm that the timing offset update is received, determining that the update of the timing offset is effective.
8. The method of claim 7, further comprising:
and if the first timer is overtime and the terminal does not receive the NDI overturning indication or the confirmation indication, determining that the updating of the timing offset is not effective.
9. The method of claim 8, wherein if the update of the timing offset is not valid, the method further comprises:
and retransmitting the MAC CE to the network side equipment.
10. A method for updating a timing offset, comprising:
the network side equipment receives a media access control layer control unit MAC CE sent by a terminal, wherein the MAC CE comprises: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
11. The method according to claim 10, wherein before the network side device receives the MAC CE sent by the terminal, the method further comprises:
the network side equipment sends the common offset information to the terminal through a system message, wherein the common offset information is at a cell level or a beam level.
12. The method according to claim 10, wherein the updated value information of the timing offset is further used to indicate the updating of the offset of K1, and/or K2, and/or K0;
k1 is a time slot interval between a Physical Downlink Shared Channel (PDSCH) and a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH; k2 is the time slot interval between the uplink scheduling control information and the physical uplink shared channel PUSCH scheduled by the uplink scheduling control information, and K0 is the time slot interval between the downlink scheduling control information and the PDSCH scheduled by the downlink scheduling control information.
13. The method of claim 10, wherein the updated value information of the timing offset comprises at least one of:
indication information indicating that an update value of the timing offset is a positive or negative number or 0;
an absolute value of an updated value of the timing offset;
index information of an update value of the timing offset.
14. The method of claim 13, wherein the index information of the updated value of the timing offset comprises:
defining index information corresponding to the update values of different timing offsets by the protocol; alternatively, the first and second liquid crystal display panels may be,
and receiving index information corresponding to the update values of the different offsets sent by the network side equipment.
15. The method of claim 13, wherein the granularity of the updated value of the timing offset is:
symbol granularity, or slot granularity, or system frame granularity.
16. The method of claim 13, further comprising:
after receiving the MAC CE, starting or resetting a first timer;
if the first timer is not overtime and the network side equipment sends a new data indication NDI (network data indicator) overturning indication to the terminal, and the updating of the timing offset is determined to be effective; or, if the first timer is not overtime and the network side device confirms to the terminal that the confirmation instruction of the timing offset update is received, determining that the update of the timing offset is effective.
17. The method of claim 16, further comprising:
and if the first timer is overtime and the network side equipment does not send the NDI overturning indication or the confirmation indication, determining that the updating of the timing offset is not effective.
18. The method of claim 17, wherein if the update of the timing offset is not valid, the method further comprises:
and receiving the MAC CE retransmitted by the terminal.
19. The method according to claim 10 or 18, further comprising:
and determining the updated timing offset according to the updated value information of the timing offset and the last used timing offset included in the MAC CE.
20. A timing offset updating apparatus applied to a terminal, comprising:
a first sending module, configured to send a media access control layer control element MAC CE to a network side device, where the MAC CE includes: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
21. A terminal comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, characterized in that the processor is adapted to:
sending a media access control layer control element (MAC CE) to a network side device, wherein the MAC CE comprises: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
22. A timing offset updating device applied to a network side device is characterized by comprising:
a first receiving module, configured to receive a media access control layer control element MAC CE sent by a terminal, where the MAC CE includes: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
23. A network side device comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, wherein the processor is configured to:
receiving a media access control layer control unit (MAC CE) sent by a terminal, wherein the MAC CE comprises: the logical channel identification LCID and the updating value information of the timing offset;
wherein the updated value information of the timing offset is used for indicating the change value of the current timing offset relative to the last used timing offset.
24. A communication device comprising a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor, when executing the program, implements the timing offset update method of any one of claims 1-9; alternatively, the processor implements the timing offset updating method according to any one of claims 10 to 19 when executing the program.
25. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the timing offset updating method according to any one of claims 1 to 9; alternatively, the program when executed by a processor implements the steps in the timing offset update method of any of claims 10-19.
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