CN115086983A

CN115086983A - Electronic device and method for wireless communication, computer-readable storage medium

Info

Publication number: CN115086983A
Application number: CN202110270987.9A
Authority: CN
Inventors: 刘敏; 李浩进
Original assignee: Sony Corp
Current assignee: Sony Corp
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2022-09-20
Also published as: WO2022188722A1

Abstract

The present disclosure provides an electronic device for wireless communication, the electronic device comprising processing circuitry configured to: configuring setting information in advance, wherein the setting information indicates whether to dynamically transmit information about timing advance of the user equipment to the user equipment within the service range of the electronic equipment, and controlling uplink transmission of the user equipment based on the setting information.

Description

Electronic device and method for wireless communication, computer-readable storage medium

Technical Field

The present disclosure relates to the field of wireless communication technology, and in particular, to a base station indicating information on timing advance to a user equipment. And more particularly, to an electronic device and method for wireless communication, and a computer-readable storage medium.

Background

In a wireless communication environment, Timing Advance (TA) is generally used for uplink transmission of a user equipment, and means to predict radio frequency transmission delay caused by distance and send out a data packet at a corresponding time in advance in order to enable an uplink transmission packet of the user equipment to reach a base station at a desired time.

TA errors can cause inter-symbol-interference (ISI) at the base station. Fig. 1 is a diagram illustrating inter-symbol interference due to timing advance in the prior art. As shown in fig. 1, there are four user equipments UE #0, UE #1, UE #2, and UE # 3. For UE #0, when the start point of the reception window (e.g., window of fourier transform (FFT)) of the base station receiver is just within the CP (cyclic prefix) of the symbol received from UE #0, ISI interference is not caused and the base station can correctly decode the desired signal. However, for UE #1, since there is a large difference between the TA received by UE #1 from the base station and the TA actually required by UE #1 (i.e., there is a TA error), the start point of the receive window of the base station receiver falls outside the CP of the symbol received from UE #1, and thus ISI interference is caused, and the base station may not correctly decode the desired signal. Similarly, symbols received by the base station from UE #2 and UE #3 also cause ISI interference. When ISI is large to a certain extent, decoding errors may be caused, resulting in decoding failure, reducing transmission efficiency of the user equipment, and affecting user experience.

The faster the TA changes, the more likely it is to generate a TA error. In another scenario, for example, in a fast moving scenario of a UE such as a high-speed rail, an airplane, etc., a scenario in which the relative position between the base station and the UE changes continuously due to the movement of the UE, so that the change of the TA is very frequent, how the base station indicates the TA to the UE becomes an urgent issue to be solved.

Disclosure of Invention

The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

According to an aspect of the present disclosure, there is provided an electronic device for wireless communication, the electronic device comprising processing circuitry configured to: configuring setting information in advance, wherein the setting information indicates whether to dynamically transmit information about timing advance of the user equipment to the user equipment within the service range of the electronic equipment, and controlling uplink transmission of the user equipment based on the setting information.

According to an aspect of the present disclosure, there is provided an electronic device for wireless communication, the electronic device comprising processing circuitry configured to: receiving pre-configured setting information from a network side device providing a service to an electronic device, wherein the setting information indicates whether the network side device is to dynamically transmit information about a timing advance of the electronic device to the electronic device, and performing uplink transmission based on the setting information.

According to another aspect of the present disclosure, there is provided a method for wireless communication, the method comprising: configuring setting information in advance, wherein the setting information indicates whether to dynamically transmit information about timing advance of the user equipment to the user equipment within the service range of the electronic equipment, and controlling uplink transmission of the user equipment based on the setting information.

According to another aspect of the present disclosure, there is provided a method for wireless communication, the method comprising: receiving pre-configured setting information from a network side device providing a service to an electronic device, wherein the setting information indicates whether the network side device is to dynamically transmit information about a timing advance of the electronic device to the electronic device, and performing uplink transmission based on the setting information.

According to other aspects of the present invention, there are also provided a computer program code and a computer program product for implementing the above-described method for wireless communication, and a computer-readable storage medium having recorded thereon the computer program code for implementing the above-described method for wireless communication.

These and other advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings.

Drawings

To further clarify the above and other advantages and features of the present invention, a more particular description of embodiments of the invention will be rendered by reference to the appended drawings. Which are incorporated in and form a part of this specification, along with the detailed description that follows. Elements having the same function and structure are denoted by the same reference numerals. It is appreciated that these drawings depict only typical examples of the invention and are therefore not to be considered limiting of its scope. In the drawings:

fig. 1 is a diagram illustrating inter-symbol interference due to timing advance in the prior art;

FIG. 2 shows a functional block diagram of an electronic device for wireless communication, according to one embodiment of the present disclosure;

fig. 3 shows an information interaction diagram in the prior art, in which a base station transmits information about timing advance to a user equipment through a media access control element;

fig. 4 illustrates an information interaction diagram in which an electronic device transmits information on a timing advance to a user equipment through downlink control information according to an embodiment of the present disclosure;

fig. 5 is a diagram illustrating an example of a scenario of a distribution of user devices and movement of an electronic device according to an embodiment of the present disclosure;

fig. 6A and 6B are schematic views showing states in which signals transmitted from a user equipment reach an electronic device at different times, respectively;

fig. 7 shows a functional block diagram of an electronic device for wireless communication according to another embodiment of the present disclosure;

fig. 8A is a diagram illustrating an example of a length of time for scheduling corresponding to each user equipment in a situation where a timing advance sent by the electronic equipment to the user equipment is less than a timing advance required by the user equipment and inter-symbol interference has not occurred at a receiver of the electronic equipment, according to an embodiment of the present disclosure;

fig. 8B is a diagram illustrating an example of a length of time for scheduling corresponding to each user equipment in a situation where the timing advance that the electronic device transmits to the user equipment is less than the timing advance required by the user equipment and inter-symbol interference has occurred at the receiver of the electronic device, in accordance with an embodiment of the present disclosure;

fig. 8C is a diagram illustrating an example of a length of time for scheduling corresponding to each user equipment in a situation where the timing advance transmitted by the electronic equipment to the user equipment is greater than the timing advance required by the user equipment such that intersymbol interference occurs at the receiver of the electronic equipment, according to an embodiment of the present disclosure;

fig. 9 is a diagram illustrating an example of an electronic device scheduling a user equipment according to an embodiment of the present disclosure;

fig. 10 is a diagram illustrating an example of scheduling user equipments at different times according to an embodiment of the present disclosure;

fig. 11 shows a functional block diagram of an electronic device for wireless communication according to another embodiment of the present disclosure;

fig. 12 shows a flow diagram of a method for wireless communication according to one embodiment of the present disclosure;

fig. 13 shows a flow diagram of a method for wireless communication according to another embodiment of the present disclosure;

fig. 14 is a block diagram illustrating a first example of a schematic configuration of an eNB or a gNB to which the techniques of this disclosure may be applied;

fig. 15 is a block diagram illustrating a second example of a schematic configuration of an eNB or a gNB to which the techniques of this disclosure may be applied;

fig. 16 is a block diagram showing an example of a schematic configuration of a smartphone to which the technique of the present disclosure may be applied;

fig. 17 is a block diagram showing an example of a schematic configuration of a car navigation device to which the technique of the present disclosure can be applied; and

fig. 18 is a block diagram of an exemplary architecture of a general-purpose personal computer in which methods and/or apparatus and/or systems according to embodiments of the invention may be implemented.

Detailed Description

Exemplary embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in the specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the device structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.

Fig. 2 shows a functional block diagram of an electronic device for wireless communication according to one embodiment of the present disclosure.

As shown in fig. 2, the electronic apparatus 200 includes: a pre-configuration unit 201, which may pre-configure setting information, wherein the setting information indicates whether to dynamically transmit information on a timing advance of a user equipment to the user equipment within a service range of the electronic device 200; and a control unit 203 which can control uplink transmission of the user equipment based on the setting information.

The pre-configuration unit 201 and the control unit 203 may be implemented by one or more processing circuits, which may be implemented as chips, for example.

The electronic device 200 may be a network-side device in a wireless communication system, and specifically may be provided on a base station side or communicably connected to a base station, for example. Here, it should also be noted that the electronic device 200 may be implemented at the chip level, or may also be implemented at the device level. For example, the electronic device 200 may operate as a base station itself, and may also include external devices such as memory, transceivers (not shown), and the like. The memory may be used to store programs and related data information that the base station needs to perform to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (e.g., user equipment, other base stations, etc.), and implementations of the transceiver are not particularly limited herein.

The wireless communication system according to the present disclosure may be a 5G NR (New Radio) communication system. Further, a wireless communication system according to the present disclosure may include a Non-terrestrial network (NTN). Optionally, the wireless communication system according to the present disclosure may further include a Terrestrial Network (TN). In addition, those skilled in the art will appreciate that a wireless communication system according to the present disclosure may also be a 4G or 3G communication system.

As an example, in the case where the electronic device 200 is a low-orbit satellite, since the moving speed of the low-orbit satellite is fast and the TA changes faster, it may be indicated by the setting information that information on the timing advance of the user equipment is to be transmitted to the user equipment, whereas in the case where the electronic device 200 is a sync satellite, since the moving speed of the sync satellite is slow and the TA changes slower, it may be indicated by the setting information that information on the timing advance of the user equipment is not to be transmitted to the user equipment. As another example, in the case of terrestrial network communication, if a user equipment (e.g., a vehicle-mounted device) moving speed is high, the TA change is fast, the electronic device 200 may indicate, through the setting information, that information on the timing advance of the user equipment is to be transmitted to the user equipment, and if the user equipment moving speed is low, the TA change is slow, and the electronic device 200 may indicate, through the setting information, that the information on the timing advance of the user equipment is not to be transmitted to the user equipment. As can be seen, the electronic device 200 according to the present embodiment can dynamically indicate information on the timing advance of the user equipment to the user equipment according to the setting information.

In the prior art, the base station does not configure setting information about the timing advance in advance. However, the electronic apparatus 200 according to the embodiment of the present disclosure can configure setting information regarding the timing advance in advance, and can control uplink transmission of the user equipment based on the setting information.

As an example, the pre-configuration unit 201 may be configured to carry the setting information through Radio Resource Control (RRC) signaling. For example, the pre-configuration unit 201 may configure a new RRC parameter such as DynamicTACommond to carry the above-mentioned setting information. It will be understood by those skilled in the art that there are other signaling carrying setup information in addition to RRC signaling and will not be described here again.

As an example, the control unit 203 may be configured to transmit information on the timing advance to the user equipment if the setting information is valid, so that the user equipment dynamically updates the timing advance and performs uplink transmission based on the updated timing advance. For example, when the parameter DynamicTACommond is enabled, the control unit 203 sends information about the timing advance to the user equipment, so that the user equipment can dynamically update its timing advance; when the parameter dynamic tac common is disabled, the control unit 203 does not transmit information on the timing advance to the user equipment.

In the following, it is described how the electronic device 200 sends information about the timing advance to the user equipment quickly and timely in order for the user equipment to update the timing advance dynamically.

As an example, the control unit 203 may be configured to transmit information on the timing advance through Downlink Control Information (DCI) signaling for uplink scheduling. It will be appreciated by those skilled in the art that there are other signaling for quickly and timely transmitting information about timing advance in addition to DCI signaling, and will not be described here in a repeated fashion.

In the prior art, a base station performs TA update on each ue at a Timing Advance Group (TAG) level through a media access control element (MAC CE), the MAC CE is included in a Physical Downlink Shared Channel (PDSCH) for transmission, the PDSCH requires hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback, and uplink scheduling is carried in the DCI for transmission, so that even if uplink scheduling is performed in a next timeslot after a TA command is sent, when Round Trip Delay (RTD) is large, the problem of TA failure is also caused. Especially in a scenario where the TA changes rapidly, the notification of the MAC CE may not be timely enough, which may cause a larger time delay for user scheduling, thereby causing a more severe ISI, and reducing the transmission efficiency of the user, thereby reducing the user experience.

For comparison, fig. 3 shows an information interaction diagram in the prior art in which a base station transmits information on a timing advance to a user equipment through a medium access control element, and fig. 4 shows an information interaction diagram in which an electronic device 200 transmits information on a timing advance to a user equipment through downlink control information according to an embodiment of the present disclosure.

The information interaction involved in fig. 3 is described first. In S30, the base station receives a scheduling request from the user equipment; in S31, the base station informs the ue of sending a Buffer Status Report (BSR) through DCI; in S32, the base station receives a BSR from the user equipment; in S33, the base station transmits information on the timing advance to the user equipment through a Physical Downlink Control Channel (PDCCH) and PDSCH (as mentioned above, the MAC CE is included in the PDSCH for transmission); in S34, the base station receives an Acknowledgement (ACK) from the user equipment; in S35, the base station informs the user equipment of transmitting data through DCI; in S36, the base station receives an uplink data transmission from the user equipment.

The information interaction involved in fig. 4 is described next. In S40, the electronic device 200 receives a scheduling request from the user equipment; in S41, the electronic device 200 informs the user equipment of BSR transmission through DCI; in S42, the electronic device 200 receives a BSR from the user equipment; in S43, the base station transmits information on the timing advance to the user equipment through DCI and informs the user equipment of transmitting data; in S44, the base station receives an uplink data transmission from the user equipment.

As can be seen from the above description, the electronic device 200 according to the embodiment of the present disclosure may dynamically send the information about the timing advance to the user equipment through DCI signaling, so that the user equipment can quickly and timely update the information about the timing advance, thereby improving data throughput of the user equipment, reducing data transmission delay of the user equipment, and improving user experience.

As an example, the information about the timing advance may comprise a difference between a current timing advance of the user equipment and a previous timing advance of the user equipment, as determined by the electronic device 200. For example, assuming that the electronic device 200 determines that the current timing advance of the user equipment is TA _ new, and the electronic device 200 calculates that the difference between the current timing advance TA _ new and the previous timing advance TA _ old of the user equipment is TA _ DCI, the electronic device 200 transmits the TA _ DCI as the information about the timing advance to the user equipment. The ue calculates the current timing advance TA _ new as TA _ old + TA _ DCI based on the previous timing advance TA _ old and the received TA _ DCI, and performs current uplink transmission by using the TA _ new value.

As an example, the information on the timing advance may comprise a time-related offset value between a current timing advance of the user equipment and a previous timing advance of the user equipment, as determined by the electronic device 200. For example, assuming that the offset value related to time determined by the electronic device 200 is TA _ drift, the electronic device 200 transmits TA _ drift to the user equipment as information related to the timing advance. The ue calculates, based on the previous TA _ old and the received TA _ drift, that the current TA _ new is TA _ old + Time TA _ drift (where Time represents a Time interval), and then performs current uplink transmission using the TA _ new value.

The value of the previous timing advance TA _ old mentioned above is a value for a certain TAG or a certain cell or a certain beam, which may be notified/updated by the electronic device 200 through the MAC CE or through the DCI.

As an example, the information on the timing advance may comprise a current timing advance of the user equipment, as determined by the electronic device 200. For example, assuming that the current timing advance determined by the electronic device 200 is TA _ new, the electronic device 200 transmits TA _ new to the user equipment. The user equipment adopts the TA _ new value to carry out the current uplink transmission.

As an example, the information on the timing advance further comprises a timing advance group TAG related to the timing advance and/or an ID of the cell. For example, the ID of the TAG may indicate to which TAG the TA value is directed, and one TAG may contain IDs of one or more cells. In case that TA is notified/updated in units of cells, the ID of TAG may be replaced with the ID of the cell. In the above manner, the electronic device 200 may explicitly inform the user equipment of the timing advance group TAG related to the timing advance and/or the ID of the cell.

In order to reduce the overhead of the signaling carrying the information on the timing advance, the signaling may not explicitly indicate to which TAG and/or cell the information on the timing advance is directed.

As an example, the control unit 203 may be configured to indicate the timing advance group and/or the ID of the cell related to the timing advance by information on the timing advance group and/or the cell in signaling carrying the information on the timing advance. As described above, the signaling carrying the information on the timing advance may be, for example, DCI. For example, the user equipment may be implicitly informed about which TAG and/or cell the timing advance information is for by TAG information and/or cell information in which the time-frequency resource block scheduled in the DCI signaling is located.

Further, as an example, the control unit 203 may be configured to indicate the ID of the beam related to the timing advance by the information on the beam in the signaling carrying the information on the timing advance. For example, the user equipment may be implicitly informed about which beam the timing advance information is for by a beam ID (such as a Transmission Configuration Indication (TCI), SRS Resource Indication (SRI), etc.) indicated in DCI signaling.

Next, how the electronic device 200 schedules the user equipment based on the timing advance of the user equipment is described.

Fig. 5 is a diagram illustrating an example of a scenario of distribution of user equipment and movement of the electronic device 200 according to an embodiment of the present disclosure.

As shown in fig. 5, comprising four user equipments UE #1-UE #4, the electronic device 200 is shown as a satellite in fig. 5. For example, at time T1', UE #2 is located directly below the satellite (the satellite beam is 90 ° from UE #2), UE #1 and UE #3 are at angles of, for example, 100 ° and 80 °, respectively, to the satellite beam, and UE #4 at the edge of the satellite cell/beam is at an angle of, for example, 70 ° to the satellite beam. The satellite moves in a direction away from UE #3 and UE # 4. Those skilled in the art will appreciate that the scenario of fig. 5 is merely exemplary and not limiting, and the following description is not limited to the scenario illustrated in fig. 5.

The satellite transmits information about the timing advance to the four user equipments (for example, including at least one of a current timing advance of the user equipment, a difference between the current timing advance of the user equipment and a previous timing advance of the user equipment, and a time-related offset value between the current timing advance of the user equipment and the previous timing advance of the user equipment) with a point where a satellite beam center is vertically mapped onto the ground as a reference point.

Fig. 6A and 6B respectively show example diagrams of states in which signals transmitted from the user equipment reach the electronic device 200 at different times. Those skilled in the art will appreciate that fig. 6A and 6B are exemplary only and not limiting. In fig. 6A and 6B, taking the electronic device 200 as an example and taking the satellite as an example to transmit the current TA of the user equipment to the user equipment, it is assumed that fig. 6A corresponds to the signal arrival state at time T1 ', and fig. 6B corresponds to the signal arrival state at time T2', where T2 'is later than T1'. It should be noted that, for convenience, the following description is given by taking as an example the reception window of the receiver of the base station (satellite) and the CP of the symbol to be received by the base station, however, those skilled in the art can understand that there are other indexes for analyzing ISI, and the description is not repeated here.

As shown in fig. 5, UE #2, because it is located directly below the satellite, receives the current TA from the satellite exactly equal to its required TA value, so at time T1 'of fig. 6A, the start of the satellite receiver's receive window falls exactly at the end of the CP of the symbol received from UE # 2; however, since the current TA received from the satellite is smaller than the TA value actually required (a TA error occurs), the end point of the CP of the symbol received by the satellite receiver from these user equipments is later than the start point of the reception window of the satellite receiver, but since the start point of the reception window of the satellite receiver falls within the CP range of the symbol received from these user equipments, ISI is not caused, and thus, the satellite receiver can correctly decode the desired signal received from UE #1 to UE # 4.

As the satellite moves in a direction away from UE #3 and UE #4 and/or channel conditions change, as shown in fig. 6B, the distance between UE #1 and the satellite decreases at time T2 'compared to time T1', so the gap between the current TA received by UE #1 from the satellite and the TA actually needed by UE #1 decreases, the start point of the reception window of the satellite receiver is closer to the end point of the CP of the symbol received from UE #1 and the start point of the reception window of the satellite receiver still falls within the CP range of the symbol received from UE #1, so that ISI is not caused; at time T2 ', the distance between UE #2 and the satellite increases compared to time T1', so the current TA received by UE #2 from the satellite is separated from the TA actually needed by it (timing advance error), and although the end point of the CP of the symbol received by the satellite receiver from UE #2 is later than the start point of the reception window of the satellite receiver, ISI is not caused because the start point of the reception window of the satellite receiver still falls within the CP range of the symbol received from UE # 2; at time T2 ', the distance between UE #3 and the satellite increases compared to time T1', so the current TA received by UE #3 from the satellite is much smaller than it actually needs, and although the end point of the CP of the symbol received by the satellite receiver from UE #3 is much later than the start point of the reception window of the satellite receiver, ISI is not caused because the start point of the reception window of the satellite receiver still falls within the CP range of the symbol received from UE # 3; at time T2 ', the distance between UE #4 and the satellite increases compared to time T1', the current TA received by UE #4 from the satellite is much smaller than the TA actually required, not only the end point of the CP of the symbol received by the satellite receiver from UE #4 is later than the start point of the reception window of the satellite receiver but also the start point of the CP of the symbol received by the satellite receiver from UE #4 is later than the start point of the reception window of the satellite receiver, resulting in that the start point of the reception window of the satellite receiver does not fall within the range of the CP of the symbol received from UE #4, and therefore information of other symbols is introduced into the reception window of the satellite receiver, ISI may occur and the satellite receiver may not be able to correctly decode the desired signal received from UE #4, that is, of UE #1 to UE #4, UE #4 may have the greatest impact on inter-symbol interference at the satellite receiver.

As can be seen from the above description, if a user equipment (e.g., UE #4) at the edge of a satellite cell/beam) having a large impact on inter-symbol interference at a satellite receiver is not scheduled in time, the TA received by the user equipment from the satellite is increasingly different from the TA actually needed by the user equipment, which may cause ISI or cause more severe ISI, reduce the transmission efficiency of the user equipment, increase the scheduled delay, and thus reduce the user experience.

Fig. 7 shows a functional block diagram of an electronic device 200 for wireless communication according to another embodiment of the present disclosure. Optimally, as shown in fig. 7, the electronic device 200 according to another embodiment of the present disclosure may further include a calculating unit 705 and a scheduling unit 707, the calculating unit 705 may calculate a scheduling factor of the user equipment related to the timing advance, and the scheduling unit 707 may schedule the user equipment based on the scheduling factor.

The calculation unit 705 and the scheduling unit 707 may be implemented by one or more processing circuits, which may be implemented as chips, for example.

In the prior art, when a base station schedules user equipment, timing advance of the user equipment is not considered. However, the electronic device 200 according to the embodiment of the present disclosure can schedule the user equipment based on the timing advance of the user equipment, and can schedule the user equipment (e.g., the user equipment at the edge of the satellite cell/beam) having a large impact on the inter-symbol interference at the receiver of the electronic device 200 in time, avoid or reduce ISI and improve the transmission efficiency of the user equipment, reduce the delay of the scheduled user equipment, and thus improve the user experience.

As an example, the calculating unit 705 may be configured to calculate the time length for scheduling based on the arrival time of the data at the electronic device 200 and the start point of the reception window of the electronic device 200 in the case where the user equipment performs uplink transmission with the current timing advance, and the calculating unit 705 may be configured to calculate the scheduling factor based on the time length.

The following first describes a case where the timing advance transmitted by the electronic device 200 to the user equipment is smaller than the timing advance required by the user equipment, which can be divided into a case where the inter-symbol interference has not occurred at the receiver of the electronic device 200 and a case where the inter-symbol interference has occurred at the receiver of the electronic device 200.

As described above, if the start point of the reception window of the receiver of the electronic device 200 falls within the CP of the received symbol, ISI interference is not caused. On the other hand, if the timing advance error is caused by the fact that the predetermined timing advance provided by the electronic device 200 to the user equipment is smaller than the timing advance required by the user equipment, the UE performs uplink transmission with the predetermined timing advance until the start point of the CP of the symbol reaching the electronic device 200 is later in time than the start point of the receive window of the receiver of the electronic device 200 (see UE #4 in fig. 6B), ISI interference may be caused, and the electronic device 200 may not correctly decode the data received from the user equipment. As can be seen from the above description, if the starting point of the CP of the symbol reaching the electronic device 200 when the ue performs uplink transmission with the predetermined timing advance is later in time than the starting point of the receive window of the receiver of the electronic device 200, the electronic device 200 may not correctly decode the symbol received from the user equipment due to the difference between the predetermined timing advance and the timing advance actually required by the user equipment (i.e., timing advance error).

Fig. 8A is a diagram illustrating an example of a length of time for scheduling corresponding to each user equipment in a case where a timing advance amount transmitted by the electronic device 200 to the user equipment is smaller than a timing advance amount required by the user equipment and inter-symbol interference has not occurred at a receiver of the electronic device 200 according to an embodiment of the present disclosure. For comparison, in fig. 8A, in addition to the user equipments UE #1, UE #3, and UE #4 whose current timing advance received from the electronic apparatus 200 is smaller than the timing advance actually required by them, a user equipment UE #2 in which a timing advance error does not occur currently is shown. As shown in fig. 8A, it is shown that a start point of a reception window of a receiver of the electronic device 200 is Etime. In addition, hereinafter, the arrival time of data at the electronic device 200 when the user equipment performs uplink transmission with the current timing advance is simply referred to as "arrival time corresponding to the current timing advance". In fig. 8A are shown respectively: an "arrival time corresponding to the current timing advance" Ctime1_ a of data received by the electronic device 200 from UE #1 (i.e., the start point of the CP corresponding to UE # 1), an "arrival time corresponding to the current timing advance" Ctime2_ a of data received by the electronic device 200 from UE #2 (i.e., the start point of the CP corresponding to UE #2), an "arrival time corresponding to the current timing advance" Ctime3_ a of data received by the electronic device 200 from UE #3 (i.e., the start point of the CP corresponding to UE # 3), and an "arrival time corresponding to the current timing advance" Ctime4_ a of data received by the electronic device 200 from UE #4 (i.e., the start point of the CP corresponding to UE # 4). For each of the user equipments UE #1 to UE #4, the difference between the start point Etime of the reception window of the receiver of the electronic equipment 200 and its "arrival time corresponding to the current timing advance" is, for example, the time length corresponding to the electronic equipment. For example, the difference between Etime and Ctime1_ a is the length of time TL1_ a corresponding to UE # 1; the difference between Etime and Ctime2_ A is, for example, the length of time TL2_ A corresponding to UE # 2; the difference between Etime and Ctime3_ A is, for example, the length of time TL3_ A corresponding to UE # 3; the difference between Etime and Ctime4_ A is, for example, the time length TL4_ A corresponding to UE # 4. As can be seen from fig. 8A, the relationship between the time lengths corresponding to the respective electronic devices is as follows: TL4_ A minimum, TL2_ A maximum, TL1_ A and TL3_ A may be equal. In this case, since the time length TL4_ a corresponding to UE #4 is the shortest, it means that UE #4 is most likely to cause ISI due to TA error among UE #1 to UE #4, and therefore, UE #4 should be scheduled in time. As can be seen from the situation of fig. 8A, the shorter the time length for scheduling, the larger the scheduling factor.

Fig. 8B is a diagram illustrating an example of a length of time for scheduling corresponding to each user equipment in a case where a timing advance amount transmitted by the electronic equipment 200 to the user equipment is smaller than a timing advance amount required by the user equipment and inter-symbol interference has occurred at a receiver of the electronic equipment 200 according to an embodiment of the present disclosure. For comparison, in fig. 8B, in addition to the user equipments UE #3 and UE #4 whose current timing advance received from the electronic equipment 200 is smaller than its actually required timing advance, thus causing inter-symbol interference already at the receiver of the electronic equipment 200, the user equipment UE #2 shown in fig. 8A in which no timing advance error currently occurs and the user equipment UE #1 whose current timing advance received from the electronic equipment 200 is smaller than its actually required timing advance but has not caused inter-symbol interference are also shown. Reference numerals in fig. 8B for UE #1 and UE #2 refer to the description of fig. 8A, and will not be repeated here. In fig. 8B, the "arrival time corresponding to the current timing advance" of the data received by the electronic apparatus 200 from the UE #3 is Ctime3_ B (i.e., the start point of the CP corresponding to the UE # 3), and the "arrival time corresponding to the current timing advance" of the data received by the electronic apparatus 200 from the UE #4 is Ctime4_ B (i.e., the start point of the CP corresponding to the UE # 4). In fig. 8B, the difference between the "arrival time corresponding to the current timing advance" and the start point Etime of the reception window of the receiver of the electronic apparatus 200 for the user equipments UE #3 and UE #4 is, for example, the time length corresponding to the electronic apparatus. For example, the difference between Ctime3_ B and Etime is the length of time TL3_ B corresponding to UE # 3; the difference between Ctime4_ B and Etime is the length of time TL4_ B corresponding to UE # 4. Since the UEs #3 and #4 have caused the inter-symbol interference at the receiver of the electronic apparatus 200, among the UEs #1 to #4, the UEs #3 and #4 are preferentially scheduled (i.e., the scheduling factors corresponding to the UEs #3 and #4 are larger), whereas for the UEs #3 and #4, the inter-symbol interference caused by the UE #4 is larger (i.e., the time length TL4_ B corresponding to the UE #4 is larger than the time length TL3_ B corresponding to the UE # 3), and thus the electronic apparatus 200 preferentially schedules the UE #4 (i.e., the scheduling factor corresponding to the UE #4 is largest).

Fig. 8C is a diagram illustrating an example of a time length for scheduling corresponding to each user equipment in a case where a timing advance amount transmitted by the electronic device 200 to the user equipment is greater than a timing advance amount required by the user equipment so that inter-symbol interference occurs at a receiver of the electronic device 200 according to an embodiment of the present disclosure.

As can be seen from fig. 8C, the current timing advance received by UE #1 and UE #2 from the electronic device 200 is greater than the timing advance actually required by the current timing advance, and therefore, the end point of the CP of the symbols received by the electronic device 200 from UE #1 and UE #2 is earlier than the start point of the reception window of the receiver of the electronic device 200, and thus ISI is caused at the receiver of the electronic device 200 as shown in the figure.

For comparison, in fig. 8C, in addition to the user equipments UE #1 and UE #2 which receive the current timing advance from the electronic equipment 200 more than the timing advance actually required thereof and thus have caused inter-symbol interference at the receiver of the electronic equipment 200 (for example, the inter-symbol interference length caused by UE #1 is more than the inter-symbol interference length caused by UE #2, that is, the length of the ISI corresponding to UE #1 in fig. 8C is more than the length of the ISI corresponding to UE #2), the user equipment UE #3 which receives the current timing advance from the electronic equipment 200 shown in fig. 8A less than the timing advance actually required thereof but has not caused inter-symbol interference, and the user equipment UE #4 which receives the current timing advance from the electronic equipment 200 shown in fig. 8B less than the timing advance actually required thereof and has caused inter-symbol interference (for example, the length of the inter-symbol interference caused by UE #1 is smaller than the length of the inter-symbol interference caused by UE #4, i.e., the length of the ISI corresponding to UE #1 is larger than the length of the ISI corresponding to UE #4 in fig. 8C).

In fig. 8C are shown respectively: an "arrival time corresponding to the current timing advance" Ctime1_ C of data received by the electronic device 200 from the UE #1 (i.e., the start point of the CP corresponding to the UE # 1), an "arrival time corresponding to the current timing advance" Ctime2_ C of data received by the electronic device 200 from the UE #2 (i.e., the start point of the CP corresponding to the UE #2), an "arrival time corresponding to the current timing advance" Ctime3_ C of data received by the electronic device 200 from the UE #3 (i.e., the start point of the CP corresponding to the UE # 3), and an "arrival time corresponding to the current timing advance" Ctime4_ C of data received by the electronic device 200 from the UE #4 (i.e., the start point of the CP corresponding to the UE # 4).

In fig. 8C, for the user equipments UE #1 and UE #2, for example, a difference between a starting point Etime of a receiving window of a receiver of the electronic equipment 200 and "an arrival time corresponding to a current timing advance" thereof may be calculated, and then a value obtained by adding a length of CP (assumed to be CPL) to the calculated difference may be used as a time length corresponding to the electronic equipment, where the time length may reflect a length of inter-symbol interference caused by the user equipments UE #1 and UE # 2. For example, the time length TL1_ C corresponding to UE #1 is Etime-Ctime1_ C + CPL, and the time length TL2_ C corresponding to UE #2 is Etime-Ctime2_ C + CPL. Referring to fig. 8A, the time length TL3_ C corresponding to UE #3 is Etime-Ctime3_ C. Referring to fig. 8B, the time length TL4_ C ═ Ctime4_ C-Etime corresponding to UE #4 is known. Since UE #1, UE #2, and UE #4 have caused inter-symbol interference at the receiver of the electronic apparatus 200, the scheduling priority of UE #1, UE #2, and UE #4 is higher than that of UE #3 among UEs #1 to # 4. For UE #1, UE #2 and UE #4, the user equipment with larger inter-symbol interference caused by priority scheduling, because TL4_ C > TL1_ C > TL2_ C, the scheduling priority of UE #4 > the scheduling priority of UE #1 > the scheduling priority of UE #2 (i.e., scheduling factor corresponding to UE #4 > scheduling factor corresponding to UE #1 > scheduling factor corresponding to UE # 2).

Fig. 9 is a diagram illustrating an example in which the electronic device 200 schedules a user equipment according to an embodiment of the present disclosure. Fig. 9 is described in connection with user equipments UE #1 to UE #4 in fig. 8A. As can be seen from fig. 8A, among the user equipments UE #1 to UE #4 that do not cause ISI, since the time length corresponding to the UE #4 at the satellite cell/beam edge is the shortest, the UE #4 is most likely to cause ISI due to a TA error, and thus, as shown in fig. 9, the electronic apparatus 200 preferentially schedules the UE # 4.

Fig. 10 is a diagram illustrating an example of scheduling user equipments at different times according to an embodiment of the present disclosure. Fig. 10 is described in conjunction with user equipments UE #1 to UE #4 in fig. 8A. In fig. 10, the four user equipments UE #1 to UE #4 in fig. 8A are shown and the TA conditions of the UEs UE #1 to UE #4 are shown during time T1-T8, taking UE #4 as an example, "TAok" at time T4 to indicate that if UE #4 is scheduled at time T4, the timing advance of UE #4 will not cause ISI to be generated at the electronic equipment 200, and "TANG" at time T5 to indicate that if UE #4 is scheduled at time T5, the timing advance of UE #4 will cause ISI to be generated at the electronic equipment 200. In fig. 10, it is assumed that the electronic apparatus 200 receives scheduling requests of UE #2 and UE # 4. As can be seen from fig. 8A, since the time length corresponding to UE #4 is the shortest, the electronic apparatus 200 schedules UE #4 with priority. Assuming that the electronic apparatus 200 preferentially schedules the UE #4 in T4, as shown in fig. 10, the UE #4 is "TAok" at time T4, the timing advance of the UE #4 does not cause ISI to be generated at the electronic apparatus 200. In addition, even if UE #2 is scheduled later than UE #4 (e.g., UE #2 is scheduled at T5), because UE #2 is "TAok" at times T5-T8, the timing advance of UE #2 does not cause ISI to be generated at electronic device 200. Conversely, if the timing advance of the user equipment is not considered, UE #4 may be scheduled in T5, as shown in fig. 10, where UE #4 is "TA NG" at time T5, and the timing advance of UE #4 may result in ISI at the electronic device 200.

As an example, the length of time also relates to the decoding capability of the electronic device 200 in case of inter-symbol interference.

In the description of fig. 8A, assuming that the electronic device 200 may not be able to correctly decode data received from the user equipment when the starting point of the CP of the symbol reaching the electronic device 200 coincides in time with the starting point of the receive window of the receiver of the electronic device 200 when the user equipment performs uplink transmission, taking UE #4 as an example, in fig. 8A, the time length corresponding to UE #4 may be represented as Etime-Ctime4_ a. However, in the case of strong receiver capability of the electronic device 200, even if the starting point of the CP of the symbol that reaches the electronic device 200 when the UE performs uplink transmission is later in time than the starting point of the reception window of the receiver of the electronic device 200 by a predetermined value (for example, within a predetermined proportion (for example, 10%) of the length of the CP), that is, even if there is a certain ISI (for example, ISI within 10%, it can be said that the ISI proportion is within 10%), the received data can be correctly decoded, taking the UE #4 as an example, in this case, the time length corresponding to the UE #4 may be expressed as a predetermined proportion of the length x of the Etime-Ctime4_ a + CP. Furthermore, for the scenarios described in connection with fig. 8B-8C, the time length of the user equipment is also related to the decoding capability of the electronic device 200 in case of inter-symbol interference, which will not be described again here.

As an example, the calculating unit 705 may be configured to calculate the scheduling factor based on at least one of a location of the user equipment, an included angle between the electronic device 200 and the user equipment, whether the user equipment is close to handover, and a size of a data packet when the user equipment performs uplink transmission. In this way, the electronic device 200 can schedule the user equipment based on at least one of the location of the user equipment, the included angle between the electronic device and the user equipment, whether the user equipment is close to handover, and the size of a data packet when the user equipment performs uplink transmission.

As an example, the user equipment comprises a plurality of user equipments, and the scheduling unit 707 may be configured to schedule the user equipment having the largest scheduling factor among the plurality of user equipments. That is, the electronic device 200 may schedule the user device based directly on the scheduling factor.

In addition, the electronic device 200 may schedule the user equipment based on the scheduling factor in combination with other factors. As an example, the scheduling unit 707 may be configured to calculate a ratio between a currently requested communication rate and a cumulative average communication rate of each user equipment, and calculate a product of the ratio and a scheduling factor, and schedule a user equipment having a largest product among a plurality of user equipments.

Suppose the scheduling factor of user equipment i (i is more than or equal to 1 and less than or equal to N, N is the total number of the user equipment) is TAF _i ，R _i (T) communication rate requested by user equipment i at time T, T _i (t) is the cumulative average communication rate of user equipment i at time t, then scheduled user equipment k can be represented as:

in the expression (1) given above, the expression,

express get such that

The maximum value of i.

In this way, the electronic device 200 schedules the user equipment taking into account not only the timing advance related scheduling factor of the user equipment, but also the currently requested communication rate and the cumulative average communication rate of the user equipment.

The present disclosure also provides an electronic device for wireless communication according to another embodiment. Fig. 11 shows a functional block diagram of an electronic device 1100 for wireless communication according to another embodiment of the present disclosure. As shown in fig. 11, the electronic device 1100 includes: a processing unit 1101 that can receive, from a network-side device that provides a service to the electronic device 1100, pre-configured setting information indicating whether the network-side device is to dynamically transmit information on the timing advance of the electronic device 1100 to the electronic device 1100; and a communication unit 1103 that can perform upstream transmission based on the setting information.

Among other things, the processing unit 1101 and the communication unit 1103 may be implemented by one or more processing circuits, which may be implemented as chips, for example.

The electronic device 1100 may be provided on a User Equipment (UE) side or communicatively connected to a user equipment, for example. Here, it is also noted that the electronic device 1100 may be implemented at a chip level, or may also be implemented at a device level. For example, the electronic device 1100 may operate as the user device itself, and may also include external devices such as memory, transceivers (not shown in the figures), and so forth. The memory may be used to store programs and related data information that the user device needs to perform to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (e.g., base stations, other user equipment, etc.), and implementations of the transceiver are not particularly limited herein. The base station may be, for example, an eNB or a gNB.

As an example, the network side device may be a base station, for example, the network side device may be the electronic device 200 according to an embodiment of the present disclosure.

In the prior art, the user equipment does not receive the setting information about the timing advance configured in advance by the base station from the base station. However, the electronic device 1100 according to the embodiment of the present disclosure can receive setting information on the timing advance, which is configured in advance by the network-side device, and can perform uplink transmission based on the setting information.

As an example, the processing unit 1101 may be configured to receive the setting information through Radio Resource Control (RRC) signaling. For example, the processing unit 1101 may receive the above-described setting information through an RRC parameter such as DynamicTACommond. It will be understood by those skilled in the art that the processing unit 1101 may receive the above-mentioned setting information through other signaling besides RRC signaling, which is not described here again.

As an example, the processing unit 1101 may be configured to receive information on the timing advance from the network side device if the setting information is valid, to dynamically update the timing advance and perform uplink transmission based on the updated timing advance. For example, when the parameter DynamicTACommond is enabled, the processing unit 1101 receives information about timing advance from the network side device; when the above parameter DynamicTACommond is disabled, the processing unit 1101 does not receive information on the timing advance amount from the network-side device.

As an example, the processing unit 1101 may be configured to receive information on the timing advance through Downlink Control Information (DCI) signaling for uplink scheduling.

According to the electronic device 1100 of the embodiment of the present disclosure, the information about the timing advance may be dynamically received from the network side device through DCI signaling, so that the electronic device 1100 may quickly and timely update the information about the timing advance, thereby improving data throughput of the electronic device 1100, reducing data transmission delay of the electronic device 1100, and improving user experience. It will be understood by those skilled in the art that the processing unit 1101 may also receive information related to the timing advance in a fast and timely manner through other signaling, which will not be described in detail herein.

As an example, the processing unit 1101 may be configured to update the timing advance by a difference between a current timing advance of the electronic device 1100 and a previous timing advance of the electronic device 1100 included in the information on the timing advance. For example, assuming that the network side device determines that the current timing advance of the electronic device 1100 is TA _ new, and the network side device calculates that the difference between the current timing advance TA _ new and the previous timing advance TA _ old of the electronic device 1100 is TA _ DCI, the network side device transmits the TA _ DCI as information about the timing advance to the electronic device 1100. The electronic device 1100 calculates the current timing advance TA _ new of the electronic device based on the previous timing advance TA _ old and the received TA _ DCI, updates the timing advance, and performs current uplink transmission using the TA _ new value.

As an example, the processing unit 1101 may be configured to update the timing advance by a time-related offset value between a current timing advance of the electronic device 1100 and a previous timing advance of the electronic device 1100 included in the information on the timing advance. For example, assuming that the offset value related to time determined by the network side device is TA _ drift, the network side device transmits TA _ drift to the electronic device 1100 as information related to the timing advance. The electronic device 1100 calculates a current timing advance TA _ new (TA _ old + Time) TA _ drift (where Time represents a Time interval) based on the previous timing advance TA _ old and the received TA _ drift, so as to update the timing advance, and the electronic device 1100 performs current uplink transmission using the TA _ new value.

As an example, the processing unit 1101 may be configured to update the timing advance by a current timing advance of the electronic device 1100, which is included in the information on the timing advance. For example, assuming that the current timing advance determined by the network side device is TA _ new, the network side device sends TA _ new to the electronic device 1100. The electronic device 1100 performs the current uplink transmission using the TA _ new value.

As an example, the processing unit 1101 may be configured to update the timing advance based on the timing advance group TAG related to the timing advance and/or the ID of the cell further included in the information on the timing advance. The ID of the TAG may indicate which TAG the TA value is for, and the ID of the cell may indicate which cell the TA value is for. The processing unit 1101 may be configured to update the timing advance based on a TAG explicitly included in the information on the timing advance and/or an ID of the cell.

As an example, the processing unit 1101 may be configured to update the timing advance amount based on the timing advance group and/or the ID of the cell related to the timing advance amount indicated by the information on the timing advance group and/or the cell in the signaling carrying the information on the timing advance amount. As described above, electronic device 1100 may receive information regarding timing advance, e.g., through DCI signaling. For example, the electronic device 1100 may know, through TAG information and/or cell information where a time-frequency resource block scheduled in DCI signaling is located, to which TAG and/or cell the information on the timing advance is directed.

As an example, the processing unit 1101 may be configured to update the timing advance based on the ID of the beam related to the timing advance indicated by the information on the beam in the signaling carrying the information on the timing advance. For example, the electronic device 1100 may know for which beam the information about the timing advance is for through the beam ID indicated in the DCI signaling (e.g., Transmission Configuration Indication (TCI), SRS Resource Indication (SRI), etc.).

In the above description of the electronic device for wireless communication in the embodiments, it is apparent that some processes or methods are also disclosed. In the following, a summary of the methods is given without repeating some details that have been discussed above, but it should be noted that although the methods are disclosed in the description of electronic devices for wireless communication, the methods do not necessarily employ or be performed by those components described. For example, embodiments of an electronic device for wireless communication may be partially or completely implemented using hardware and/or firmware, while the methods for wireless communication discussed below may be completely implemented by computer-executable programs, although the methods may also employ hardware and/or firmware of an electronic device for wireless communication.

Fig. 12 shows a flowchart of a method S1200 for wireless communication according to one embodiment of the present disclosure. The method S1200 starts at step S1202. In step S1204, setting information is configured in advance, wherein the setting information indicates whether information on a timing advance of a user equipment is to be dynamically transmitted to the user equipment within a service range of the electronic equipment. In step S1206, uplink transmission of the user equipment is controlled based on the setting information. The method S1200 ends at step S1208.

The method may be performed by the electronic device 200 described above, for example, and specific details thereof may be referred to the description of the corresponding location above, which is not repeated here.

Fig. 13 shows a flowchart of a method S1300 for wireless communication according to another embodiment of the present disclosure. Method S1300 begins at step S1302. In step S1304, preconfigured setting information is received from a network-side device providing a service to the electronic device, where the setting information indicates whether the network-side device is to dynamically transmit information about the timing advance of the electronic device to the electronic device. In step S1306, uplink transmission is performed based on the setting information. Method S1300 ends at step S1308.

The method may be performed, for example, by the electronic device 1100 described above, and specific details thereof may be referred to the description of the corresponding locations above and will not be repeated here.

The techniques of this disclosure can be applied to a variety of products.

The electronic device 200 may be implemented as various network-side devices, such as a base station. The base station may be implemented as any type of evolved node b (enb) or gNB (5G base station). The enbs include, for example, macro enbs and small enbs. The small eNB may be an eNB that covers a cell smaller than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB. Similar scenarios are also possible for the gNB. Alternatively, the base station may be implemented as any other type of base station, such as a NodeB and a Base Transceiver Station (BTS). The base station may include: a main body (also referred to as a base station apparatus) configured to control wireless communication; and one or more Remote Radio Heads (RRHs) disposed at a different place from the main body. In addition, various types of user equipment can operate as a base station by temporarily or semi-persistently performing the function of the base station.

The electronic device 1100 may be implemented as various user devices. The user equipment may be implemented as a mobile terminal such as a smart phone, a tablet Personal Computer (PC), a notebook PC, a portable game terminal, a portable/cryptographic dog-type mobile router, and a digital camera, or a vehicle-mounted terminal such as a car navigation apparatus. The user equipment may also be implemented as a terminal (also referred to as a Machine Type Communication (MTC) terminal) that performs machine-to-machine (M2M) communication. Further, the user equipment may be a wireless communication module (such as an integrated circuit module including a single chip) mounted on each of the above-described terminals.

[ application example with respect to base station ]

(first application example)

Fig. 14 is a block diagram illustrating a first example of a schematic configuration of an eNB or a gNB to which the techniques of this disclosure may be applied. Note that the following description takes an eNB as an example, but may be applied to a gNB as well. eNB 800 includes one or more antennas 810 and base station equipment 820. The base station device 820 and each antenna 810 may be connected to each other via an RF cable.

Each of the antennas 810 includes a single or multiple antenna elements, such as multiple antenna elements included in a multiple-input multiple-output (MIMO) antenna, and is used for the base station apparatus 820 to transmit and receive wireless signals. As shown in fig. 14, eNB 800 may include multiple antennas 810. For example, the multiple antennas 810 may be compatible with multiple frequency bands used by the eNB 800. Although fig. 14 shows an example in which the eNB 800 includes multiple antennas 810, the eNB 800 may also include a single antenna 810.

The base station device 820 includes a controller 821, a memory 822, a network interface 823, and a wireless communication interface 825.

The controller 821 may be, for example, a CPU or a DSP, and operates various functions of higher layers of the base station apparatus 820. For example, the controller 821 generates a data packet from data in a signal processed by the wireless communication interface 825 and transfers the generated packet via the network interface 823. The controller 821 may bundle data from a plurality of baseband processors to generate a bundle packet, and deliver the generated bundle packet. The controller 821 may have a logic function of performing control as follows: such as radio resource control, radio bearer control, mobility management, admission control and scheduling. The control may be performed in connection with a nearby eNB or core network node. The memory 822 includes a RAM and a ROM, and stores programs executed by the controller 821 and various types of control data (such as a terminal list, transmission power data, and scheduling data).

The network interface 823 is a communication interface for connecting the base station apparatus 820 to a core network 824. The controller 821 may communicate with a core network node or another eNB via a network interface 823. In this case, the eNB 800 and a core network node or other enbs may be connected to each other through a logical interface, such as an S1 interface and an X2 interface. The network interface 823 may also be a wired communication interface or a wireless communication interface for a wireless backhaul. If the network interface 823 is a wireless communication interface, the network interface 823 may use a higher frequency band for wireless communication than the frequency band used by the wireless communication interface 825.

The wireless communication interface 825 supports any cellular communication scheme, such as Long Term Evolution (LTE) and LTE-advanced, and provides wireless connectivity to terminals located in the cell of the eNB 800 via the antenna 810. The wireless communication interface 825 may generally include, for example, a baseband (BB) processor 826 and RF circuitry 827. The BB processor 826 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing of layers such as L1, Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP). The BB processor 826 may have a part or all of the above-described logic functions in place of the controller 821. The BB processor 826 may be a memory storing a communication control program, or a module comprising a processor and associated circuitry configured to execute a program. The update program may cause the function of the BB processor 826 to change. The module may be a card or blade that is inserted into a slot of the base station device 820. Alternatively, the module may be a chip mounted on a card or blade. Meanwhile, the RF circuit 827 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive a wireless signal via the antenna 810.

As shown in fig. 14, wireless communication interface 825 may include a plurality of BB processors 826. For example, the plurality of BB processors 826 may be compatible with the plurality of frequency bands used by the eNB 800. As shown in fig. 14, wireless communication interface 825 may include a plurality of RF circuits 827. For example, the plurality of RF circuits 827 may be compatible with a plurality of antenna elements. Although fig. 14 shows an example in which the wireless communication interface 825 includes a plurality of BB processors 826 and a plurality of RF circuits 827, the wireless communication interface 825 may include a single BB processor 826 or a single RF circuit 827.

In the eNB 800 shown in fig. 14, the transceiver of the electronic device 200 described with reference to fig. 2 may be implemented by the wireless communication interface 825 when implemented as a base station. At least a portion of the functionality may also be implemented by the controller 821. For example, the controller 821 may perform the instruction of the information on the timing advance amount by performing the functions of the respective units described above with reference to fig. 2.

(second application example)

Fig. 15 is a block diagram illustrating a second example of a schematic configuration of an eNB or a gNB to which the techniques of this disclosure may be applied. Note that similarly, the following description takes the eNB as an example, but may be equally applied to the gbb. eNB 830 includes one or more antennas 840, base station equipment 850, and RRHs 860. The RRH860 and each antenna 840 may be connected to each other via an RF cable. The base station apparatus 850 and RRH860 may be connected to each other via a high-speed line such as a fiber optic cable.

Each of the antennas 840 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the RRH860 to transmit and receive wireless signals. As shown in fig. 15, the eNB 830 may include multiple antennas 840. For example, the multiple antennas 840 may be compatible with multiple frequency bands used by the eNB 830. Although fig. 15 shows an example in which the eNB 830 includes multiple antennas 840, the eNB 830 may also include a single antenna 840.

Base station apparatus 850 comprises a controller 851, memory 852, network interface 853, wireless communication interface 855, and connection interface 857. The controller 851, the memory 852, and the network interface 853 are the same as the controller 821, the memory 822, and the network interface 823 described with reference to fig. 14.

The wireless communication interface 855 supports any cellular communication scheme (such as LTE and LTE-advanced) and provides wireless communication via the RRH860 and the antenna 840 to terminals located in a sector corresponding to the RRH 860. The wireless communication interface 855 may generally include, for example, the BB processor 856. The BB processor 856 is identical to the BB processor 826 described with reference to fig. 14, except that the BB processor 856 is connected to the RF circuit 864 of the RRH860 via a connection interface 857. As shown in fig. 15, wireless communication interface 855 may include a plurality of BB processors 856. For example, the plurality of BB processors 856 may be compatible with the plurality of frequency bands used by the eNB 830. Although fig. 15 shows an example in which wireless communication interface 855 includes multiple BB processors 856, wireless communication interface 855 may include a single BB processor 856.

Connection interface 857 is an interface for connecting base station apparatus 850 (wireless communication interface 855) to RRH 860. Connection interface 857 may also be a communication module for communication in the above-described high-speed line that connects base station apparatus 850 (wireless communication interface 855) to RRH 860.

RRH860 includes connection interface 861 and wireless communication interface 863.

The connection interface 861 is an interface for connecting the RRH860 (wireless communication interface 863) to the base station apparatus 850. The connection interface 861 may also be a communication module for communication in the above-described high-speed line.

Wireless communication interface 863 transmits and receives wireless signals via antenna 840. The wireless communication interface 863 can generally include, for example, RF circuitry 864. The RF circuit 864 may include, for example, mixers, filters, and amplifiers, and transmits and receives wireless signals via the antenna 840. As shown in fig. 15, wireless communication interface 863 may include a plurality of RF circuits 864. For example, the plurality of RF circuits 864 may support a plurality of antenna elements. Although fig. 15 shows an example in which the wireless communication interface 863 includes multiple RF circuits 864, the wireless communication interface 863 may include a single RF circuit 864.

In the eNB 830 shown in fig. 15, the transceiver of the electronic device 200 described with reference to fig. 2 may be implemented by the wireless communication interface 855 when implemented as a base station. At least a portion of the functionality may also be implemented by the controller 851. For example, the controller 851 may perform the indication of the information on the timing advance amount by performing the functions of the respective units described above with reference to fig. 2.

[ application example with respect to user Equipment ]

(first application example)

Fig. 16 is a block diagram illustrating an example of a schematic configuration of a smartphone 900 to which the technology of the present disclosure may be applied. The smartphone 900 includes a processor 901, memory 902, storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 912, one or more antenna switches 915, one or more antennas 916, a bus 917, a battery 918, and an auxiliary controller 919.

The processor 901 may be, for example, a CPU or a system on a chip (SoC), and controls functions of an application layer and another layer of the smartphone 900. The memory 902 includes a RAM and a ROM, and stores data and programs executed by the processor 901. The storage 903 may include a storage medium such as a semiconductor memory and a hard disk. The external connection interface 904 is an interface for connecting an external device such as a memory card and a Universal Serial Bus (USB) device to the smartphone 900.

The image pickup device 906 includes an image sensor such as a Charge Coupled Device (CCD) and a Complementary Metal Oxide Semiconductor (CMOS), and generates a captured image. The sensor 907 may include a set of sensors such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 908 converts sound input to the smartphone 900 into an audio signal. The input device 909 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 910, and receives an operation or information input from a user. The display device 910 includes a screen, such as a Liquid Crystal Display (LCD) and an Organic Light Emitting Diode (OLED) display, and displays an output image of the smart phone 900. The speaker 911 converts an audio signal output from the smart phone 900 into sound.

The wireless communication interface 912 supports any cellular communication scheme (such as LTE and LTE-advanced) and performs wireless communication. The wireless communication interface 912 may generally include, for example, a BB processor 913 and RF circuitry 914. The BB processor 913 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 914 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 916. Note that although the figure shows a case where one RF chain is connected to one antenna, this is merely illustrative and includes a case where one RF chain is connected to a plurality of antennas through a plurality of phase shifters. The wireless communication interface 912 may be one chip module on which the BB processor 913 and the RF circuit 914 are integrated. As shown in fig. 16, the wireless communication interface 912 may include a plurality of BB processors 913 and a plurality of RF circuits 914. Although fig. 16 shows an example in which the wireless communication interface 912 includes a plurality of BB processors 913 and a plurality of RF circuits 914, the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914.

Further, the wireless communication interface 912 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless Local Area Network (LAN) scheme, in addition to the cellular communication scheme. In this case, the wireless communication interface 912 may include a BB processor 913 and an RF circuit 914 for each wireless communication scheme.

Each of the antenna switches 915 switches a connection destination of the antenna 916 among a plurality of circuits (for example, circuits for different wireless communication schemes) included in the wireless communication interface 912.

Each of the antennas 916 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the wireless communication interface 912 to transmit and receive wireless signals. As shown in fig. 16, the smartphone 900 may include multiple antennas 916. Although fig. 16 shows an example in which the smartphone 900 includes multiple antennas 916, the smartphone 900 may also include a single antenna 916.

Further, the smartphone 900 may include an antenna 916 for each wireless communication scheme. In this case, the antenna switch 915 may be omitted from the configuration of the smart phone 900.

The bus 917 connects the processor 901, the memory 902, the storage device 903, the external connection interface 904, the image pickup device 906, the sensor 907, the microphone 908, the input device 909, the display device 910, the speaker 911, the wireless communication interface 912, and the auxiliary controller 919 to each other. The battery 918 provides power to the various blocks of the smartphone 900 shown in fig. 16 via a feed line, which is partially shown in the figure as a dashed line. The auxiliary controller 919 operates the minimum necessary functions of the smartphone 900, for example, in a sleep mode.

In the smart phone 900 shown in fig. 16, the transceiver of the electronic device 1100 described with reference to fig. 11 may be implemented by the wireless communication interface 912 in case the electronic device 1100 is implemented as a user device. At least a portion of the functionality may also be implemented by the processor 901 or the secondary controller 919. For example, the processor 901 or the secondary controller 919 may receive an indication of information regarding timing advance by performing the functions of the various units described above with reference to fig. 11.

(second application example)

Fig. 17 is a block diagram showing an example of a schematic configuration of a car navigation device 920 to which the technique of the present disclosure can be applied. The car navigation device 920 includes a processor 921, memory 922, a Global Positioning System (GPS) module 924, sensors 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, a wireless communication interface 933, one or more antenna switches 936, one or more antennas 937, and a battery 938.

The processor 921 may be, for example, a CPU or an SoC, and controls a navigation function and another function of the car navigation device 920. The memory 922 includes a RAM and a ROM, and stores data and programs executed by the processor 921.

The GPS module 924 measures the position (such as latitude, longitude, and altitude) of the car navigation device 920 using GPS signals received from GPS satellites. The sensors 925 may include a set of sensors such as a gyro sensor, a geomagnetic sensor, and an air pressure sensor. The data interface 926 is connected to, for example, an in-vehicle network 941 via a terminal not shown, and acquires data generated by a vehicle (such as vehicle speed data).

The content player 927 reproduces content stored in a storage medium (such as a CD and a DVD) inserted into the storage medium interface 928. The input device 929 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 930, and receives an operation or information input from a user. The display device 930 includes a screen such as an LCD or OLED display, and displays an image of a navigation function or reproduced content. The speaker 931 outputs the sound of the navigation function or the reproduced content.

The wireless communication interface 933 supports any cellular communication scheme (such as LTE and LTE-advanced), and performs wireless communication. Wireless communication interface 933 may generally include, for example, BB processor 934 and RF circuitry 935. The BB processor 934 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 935 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive a wireless signal via the antenna 937. The wireless communication interface 933 may also be one chip module with the BB processor 934 and the RF circuitry 935 integrated thereon. As shown in fig. 17, a wireless communication interface 933 may include a plurality of BB processors 934 and a plurality of RF circuits 935. Although fig. 17 shows an example in which the wireless communication interface 933 includes multiple BB processors 934 and multiple RF circuits 935, the wireless communication interface 933 may also include a single BB processor 934 or a single RF circuit 935.

Further, the wireless communication interface 933 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless LAN scheme, in addition to the cellular communication scheme. In this case, wireless communication interface 933 can include BB processor 934 and RF circuitry 935 for each wireless communication scheme.

Each of the antenna switches 936 switches a connection destination of the antenna 937 among a plurality of circuits (such as circuits for different wireless communication schemes) included in the wireless communication interface 933.

Each of the antennas 937 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 933 to transmit and receive wireless signals. As shown in fig. 17, the car navigation device 920 may include a plurality of antennas 937. Although fig. 17 shows an example in which the car navigation device 920 includes a plurality of antennas 937, the car navigation device 920 may include a single antenna 937.

Further, the car navigation device 920 may include an antenna 937 for each wireless communication scheme. In this case, the antenna switch 936 may be omitted from the configuration of the car navigation device 920.

The battery 938 supplies power to the various blocks of the car navigation device 920 shown in fig. 17 via a feed line, which is partially shown as a dashed line in the figure. The battery 938 accumulates electric power supplied from the vehicle.

In the car navigation device 920 shown in fig. 17, in the case where the electronic device 1100 described with reference to fig. 11 is implemented as a user device, a transceiver of the electronic device 1100 may be implemented by the wireless communication interface 933. At least a portion of the functionality may also be implemented by the processor 921. For example, the processor 921 may receive an indication of information regarding timing advance by performing the functions of the units described above with reference to fig. 11.

The techniques of this disclosure may also be implemented as an in-vehicle system (or vehicle) 940 including one or more blocks of a car navigation device 920, an in-vehicle network 941, and a vehicle module 942. The vehicle module 942 generates vehicle data (such as vehicle speed, engine speed, and failure information) and outputs the generated data to the on-vehicle network 941.

While the basic principles of the invention have been described in connection with specific embodiments thereof, it should be noted that it will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, using the basic circuit design knowledge or basic programming skills of those skilled in the art after reading the description of the invention.

Moreover, the invention also provides a program product which stores the machine-readable instruction codes. The instruction codes, when read and executed by a machine, may perform the methods according to embodiments of the invention described above.

Accordingly, a storage medium carrying the above-described program product having machine-readable instruction code stored thereon is also included in the present disclosure. Storage media includes, but is not limited to, floppy disks, optical disks, magneto-optical disks, memory cards, memory sticks, and the like.

In the case where the present invention is implemented by software or firmware, a program constituting the software is installed from a storage medium or a network to a computer (for example, a general-purpose computer 1800 shown in fig. 18) having a dedicated hardware configuration, and the computer can execute various functions and the like when various programs are installed.

In fig. 18, a Central Processing Unit (CPU)1801 executes various processes in accordance with a program stored in a Read Only Memory (ROM)1802 or a program loaded from a storage section 1808 to a Random Access Memory (RAM) 1803. In the RAM 1803, data necessary when the CPU 1801 executes various processes and the like is also stored as necessary. The CPU 1801, ROM 1802, and RAM 1803 are connected to each other via a bus 1804. An input/output interface 1805 is also connected to bus 1804.

The following components are connected to the input/output interface 1805: an input portion 1806 (including a keyboard, a mouse, and the like), an output portion 1807 (including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker and the like), a storage portion 1808 (including a hard disk and the like), a communication portion 1809 (including a network interface card such as a LAN card, a modem, and the like). The communication section 1809 performs communication processing via a network such as the internet. A driver 1810 may also be connected to the input/output interface 1805 as desired. A removable medium 1811 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 1810 as needed, so that the computer program read out therefrom is installed into the storage portion 1808 as needed.

In the case where the above-described series of processes is realized by software, a program constituting the software is installed from a network such as the internet or a storage medium such as the removable medium 1811.

It will be understood by those skilled in the art that such a storage medium is not limited to the removable medium 1811 shown in fig. 18 in which the program is stored, distributed separately from the apparatus to provide the program to the user. Examples of the removable medium 1811 include a magnetic disk (including a floppy disk (registered trademark)), an optical disk (including a compact disk read only memory (CD-ROM) and a Digital Versatile Disk (DVD)), a magneto-optical disk (including a Mini Disk (MD) (registered trademark)), and a semiconductor memory. Alternatively, the storage medium may be the ROM 1802, a hard disk included in the storage section 1808, or the like, in which programs are stored, and which is distributed to users together with the device including them.

It should also be noted that the components or steps may be broken down and/or re-combined in the apparatus, methods and systems of the present invention. These decompositions and/or recombinations should be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

Finally, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it should be understood that the above-described embodiments are only for illustrating the present invention and do not constitute a limitation to the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the above-described embodiments without departing from the spirit and scope of the invention. Accordingly, the scope of the invention is to be defined only by the claims appended hereto, and by their equivalents.

The present technique can also be implemented as follows.

(1) An electronic device for wireless communication, comprising processing circuitry configured to:

preconfiguring setting information indicating whether information on a timing advance of a user equipment within a service range of the electronic equipment is to be dynamically transmitted to the user equipment, and

and controlling uplink transmission of the user equipment based on the setting information.

(2) The electronic device according to (1), wherein,

the processing circuitry is configured to carry the setup information via radio resource control, RRC, signaling.

(3) The electronic device according to (1) or (2), wherein,

the processing circuit is configured to send information about timing advance to the user equipment if the setting information is valid, so that the user equipment dynamically updates the timing advance and performs the uplink transmission based on the updated timing advance.

(4) The electronic device according to (3), wherein,

the processing circuitry is configured to transmit the information on timing advance by downlink control information, DCI, signalling for uplink scheduling.

(5) The electronic apparatus according to any one of (1) to (4),

the information on timing advance comprises a difference value between a current timing advance of the user equipment and a previous timing advance of the user equipment, which is determined by the electronic equipment.

(6) The electronic apparatus according to any one of (1) to (4),

the information on timing advance comprises a time-related offset value between a current timing advance of the user equipment and a previous timing advance of the user equipment, as determined by the electronic equipment.

(7) The electronic apparatus according to (5) or (6), wherein,

the information on timing advance further comprises timing advance group and/or cell ID related to timing advance.

(8) The electronic apparatus according to (5) or (6), wherein,

the processing circuitry is configured to indicate a timing advance group and/or cell ID associated with a timing advance by information about the timing advance group and/or cell in signaling carrying the timing advance related information.

(9) The electronic apparatus according to (5) or (6), wherein,

the processing circuitry is configured to indicate the ID of the beam related to timing advance by the information on the beam in the signaling carrying the information on timing advance.

(10) The electronic device of any of (1) through (9), wherein the processing circuitry is further configured to:

calculating a scheduling factor of the user equipment related to the timing advance, an

Scheduling the user equipment based on the scheduling factor.

(11) The electronic device of (10), wherein the processing circuitry is configured to:

calculating a time length for scheduling based on an arrival time of data at the electronic device and a start point of a reception window of the electronic device in a case where the user equipment performs uplink transmission with a current timing advance, an

Calculating the scheduling factor based on the length of time.

(12) The electronic device of (11), wherein the length of time is further related to a decoding capability of the electronic device in the event of intersymbol interference.

(13) The electronic device of (10), wherein the processing circuit is configured to calculate the scheduling factor based on at least one of a location of the user equipment, an angle between the electronic device and the user equipment, whether the user equipment is close to handover, and a size of a data packet when the user equipment performs uplink transmission.

(14) The electronic apparatus according to any one of (11) to (13),

the user equipment comprises a plurality of user equipment, an

The processing circuit is configured to schedule a user equipment having the largest scheduling factor among the plurality of user equipments.

(15) The electronic apparatus according to any one of (11) to (13),

the user equipment comprises a plurality of user equipments, an

The processing circuitry is configured to:

calculating a ratio between a currently requested communication rate and a cumulative average communication rate for each user equipment and calculating a product of the ratio and the scheduling factor, an

Scheduling a user equipment having the largest product among the plurality of user equipments.

(16) An electronic device for wireless communication, comprising processing circuitry configured to:

receiving pre-configured setting information from a network side device providing a service to the electronic device, wherein the setting information indicates whether the network side device is to dynamically transmit information on a timing advance of the electronic device to the electronic device, and

and performing uplink transmission based on the setting information.

(17) The electronic apparatus according to (16), wherein,

the processing circuitry is configured to receive the setup information via radio resource control, RRC, signaling.

(18) The electronic device according to (16) or (17), wherein,

and receiving information on timing advance from the network side equipment when the setting information is valid, so as to dynamically update the timing advance and perform the uplink transmission based on the updated timing advance.

(19) The electronic device of (18), wherein,

the processing circuitry is configured to receive the information on timing advance by downlink control information, DCI, signalling for uplink scheduling.

(20) The electronic device according to any one of (18) to (19),

the processing circuit is configured to update the timing advance by a difference between a current timing advance of the electronic device and a previous timing advance of the electronic device included in the information on timing advance.

(21) The electronic device according to any one of (18) to (19),

the processing circuitry is configured to update the timing advance by a time-related offset value between a current timing advance of the electronic device and a previous timing advance of the electronic device included in the timing advance related information.

(22) The electronic device according to (20) or (21), wherein,

the processing circuitry is configured to update the timing advance based on the timing advance group and/or the ID of the cell associated with the timing advance further included in the information on timing advance.

(23) The electronic device according to (20) or (21), wherein,

the processing circuitry is configured to update the timing advance based on an ID of a timing advance group and/or cell associated with the timing advance indicated by information about the timing advance group and/or cell in signaling carrying the information about the timing advance.

(24) The electronic device according to (20) or (21), wherein,

the processing circuitry is configured to update the timing advance based on an ID of a beam related to the timing advance indicated by the information on the beam in signaling carrying the information on the timing advance.

(25) A method for wireless communication, comprising:

and controlling the uplink transmission of the user equipment based on the setting information.

(26) A method for wireless communication, comprising:

receiving pre-configured setting information from a network side device providing a service to an electronic device, wherein the setting information indicates whether the network side device is to dynamically transmit information on a timing advance of the electronic device to the electronic device, and

and performing uplink transmission based on the setting information.

(27.) a computer-readable storage medium having stored thereon computer-executable instructions that, when executed, perform the method for wireless communication according to (25) or (26).

Claims

1. An electronic device for wireless communication, comprising processing circuitry configured to:

2. The electronic device of claim 1,

3. The electronic device of claim 1 or 2,

4. The electronic device of claim 3,

5. The electronic device of any of claims 1-4, wherein the processing circuit is further configured to:

And scheduling the user equipment based on the scheduling factor.

6. The electronic device of claim 5, wherein the processing circuit is configured to:

Calculating the scheduling factor based on the length of time.

7. An electronic device for wireless communication, comprising processing circuitry configured to:

and performing uplink transmission based on the setting information.

8. A method for wireless communication, comprising:

9. A method for wireless communication, comprising:

and performing uplink transmission based on the setting information.

10. A computer-readable storage medium having stored thereon computer-executable instructions that, when executed, perform the method for wireless communication of claim 8 or 9.