CN113811005B - Method and apparatus for multiple systems or multiple subsystems sharing frame configuration - Google Patents

Abstract

The present invention proposes a method for a shared frame configuration of a multi (sub) system for operating in a first device of a first (sub) system. The method for multi (sub) system sharing frame configuration includes: judging whether the first (sub) system is a high priority system or not; and determining an allocation for a plurality of time symbol resources in a shared frame in a multi (sub) system when said first (sub) system is said high priority system.

Description

Method and apparatus for multiple systems or multiple subsystems sharing frame configuration

Technical Field

The present invention relates generally to the field of wireless communication systems. And more particularly, to a method and apparatus for multi (sub) system shared frame configuration.

Background

With the continuous development of vehicle-mounted services, how to design a wireless communication system for vehicle-mounted wireless short-range communication is obviously a problem to be solved. In addition, coexistence between multiple systems/subsystems needs to be considered.

Accordingly, there is a need for a method and apparatus for multiple (sub) systems sharing frame configuration to ameliorate the above problems.

Disclosure of Invention

The following disclosure is illustrative only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description. That is, the following disclosure is provided to introduce concepts, advantages, and benefits that are novel and non-obvious technical advantages described herein. Alternatively, not all embodiments will be described in further detail below. Thus, the following disclosure is not intended to be exhaustive or to limit the scope of the claimed subject matter to the precise form disclosed.

It is therefore a primary object of the present invention to provide a method and apparatus for sharing frame configuration for multiple (sub) systems, which overcomes the above-mentioned drawbacks.

The invention proposes a method for sharing frame configuration by multiple (sub) systems, which is used in a first device operating in a first (sub) system and comprises the following steps: judging whether the first (sub) system is a high priority system or not; and determining an allocation for a plurality of time symbol resources in a shared frame in a multi (sub) system when said first (sub) system is said high priority system.

In some embodiments, the method further comprises: receiving a signaling request from a second (sub) system, wherein said signaling request is used to request said first (sub) system to reserve at least one time symbol in said shared frame for said second (sub) system to transmit information; reconfiguring a time symbol for the first (sub) system in the shared frame according to the signaling request; and broadcasting configuration information, wherein the configuration information indicates the time symbols for the first (sub) system in the shared frame.

In some embodiments, when there are multiple systems time-division multiplexing the shared frame, the first (sub) system configures discrete time symbol resources and avoids configuring dedicated GP resources; and when the shared frame is not used by a system other than the first (sub) system, the first (sub) system configures the shared frame to have the dedicated GP resource.

In some embodiments, the first device determines whether the first (sub) system is a high priority system based on a synchronization sequence number of the first (sub) system.

In some embodiments, the shared frame is sequentially composed of a plurality of time symbols, a first interval (GT 1) and a second interval (GT 2).

In some embodiments, the first interval is an inactive symbol, and is used to configure a dedicated GP resource.

In some embodiments, when the first (sub) system is a secondary priority system, the shared frame is sequentially composed of a first interval (GT 1), a plurality of time symbols, and a second interval (GT 2).

In some embodiments, the first interval is an inactive symbol, and is used to configure a dedicated GP resource.

In some embodiments, the information may be control information, feedback information, synchronization signals, broadcast information, or the like.

In some embodiments, the at least one time symbol is a time symbol before and after a switching point of the shared frame.

The present invention proposes an apparatus for a shared frame configuration of a plurality of (sub) systems, wherein the above system operates in a first (sub) system, comprising: one or more processors; and one or more computer storage media storing computer-readable instructions, wherein the processor uses the computer storage media to perform: judging whether the first (sub) system is a high priority system or not; and determining an allocation for a plurality of time symbol resources in a shared frame in a multi (sub) system when said first (sub) system is said high priority system. The user equipment path selection strategy rule evaluation method and the user equipment thereof can obtain proper PDU session.

Other embodiments and advantages are described in detail below. This summary is not intended to limit the invention. The invention is defined by the claims.

Drawings

The following drawings depict embodiments of the invention in which like numerals represent like elements.

Fig. 1 is a schematic diagram showing a wireless communication system according to an embodiment of the present invention.

Fig. 2 is a block diagram showing a scheduling unit according to an embodiment of the present invention.

Fig. 3 is a flowchart showing a method for configuring a shared frame for a multi (sub) system according to a first embodiment of the present invention.

Fig. 4 is a schematic diagram showing a structure of a multi (sub) system sharing frame according to an embodiment of the present invention.

Fig. 5 is a schematic diagram showing another structure for sharing a frame by a multi (sub) system according to an embodiment of the present invention.

Fig. 6 is a flowchart showing a method for configuring a shared frame for a multi (sub) system according to the first embodiment of the present invention.

Fig. 7 is a schematic diagram showing a structure of a multi (sub) system sharing frame according to an embodiment of the invention.

Fig. 8 illustrates an exemplary end node according to an embodiment of the present invention.

Detailed Description

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same element by different names. The specification and claims do not identify differences in names as a way of distinguishing between elements, but rather differences in functions of the elements are used as a criterion for distinguishing. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. Furthermore, the term "coupled" as used herein includes any direct or indirect electrical connection. Thus, if a first device couples to a second device, that connection may be through a direct electrical connection, or through an indirect electrical connection via other devices and connections.

The following description is of the best embodiments for carrying out the invention and is presented for the purposes of illustration and not of limitation. It is to be understood that embodiments of the present invention may be implemented in software, hardware, firmware, or any combination thereof.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

The invention relates to a wireless communication system which can be at least used for vehicle-mounted wireless short-distance communication, in particular to related key technologies such as system design and the like. To meet the high reliability and low latency requirements of certain services (e.g., vehicle active noise reduction services), control and system information needs to be specifically designed.

Fig. 1 is a schematic diagram illustrating a wireless communication system 100 according to an embodiment of the invention. The system 100 may employ 3/4/5G or other (wireless short range) communication technologies developed by the third generation partnership project (3rd Generation Partnership Project,3GPP). The wireless communication system 100 may include a management node 110 and a terminal node 120. The management node 110 has a function of transmitting a synchronization signal, broadcast information, a higher layer control plane message, a physical layer control signaling, and a demodulation reference signal, and schedules the terminal node to perform data transmission and transmit feedback information. The management node 110 may be a base station or the like. Although only one management node 110 is shown in fig. 1, there may be multiple management nodes 110 in a deployment that control different (sub) systems. The management nodes can communicate and coordinate with each other.

The terminal node 120 may be a cell phone, a notebook computer, a vehicle-mounted mobile communication device, a noise reduction device, a tire pressure monitoring device, a projection screen, and the like. Similarly, the end node 120 may employ one or more antenna arrays to generate directional Tx or Rx beams to transmit or receive wireless signals. Although only one terminal node 120 is shown in fig. 1, the management node 110 may serve to control multiple terminal nodes at the same time.

In operation, the end node 120 may detect synchronization signals, broadcast information, control information, data information, system information, and the like from the management node 110. The control information is used for carrying information related to data scheduling or is independently used for controlling physical processes. Meanwhile, the terminal node 120 may transmit corresponding feedback information, such as HARQ feedback information, SRS signals, channel condition feedback information, etc., to the management node 110. The terminal node 120 may receive data carried in a physical downlink shared channel from the management node 110 and transmit data to the management node 110 in a physical uplink shared channel. For each symbol to be sent by the management node 110 or by the terminal node 120, the broadcast signaling will mark the symbol in the frame in the transmit-receive symbol configuration as either C (for management node 110 transmission) or T (for terminal node 120 transmission).

The present invention has various embodiments, and three main embodiments of the present invention are described below using 3 examples. The first embodiment is an implementation designed in a frame structure for an in-vehicle short-range wireless communication system. The second embodiment and the third embodiment are implementations of time division multiplexing resource coexistence in multiple (sub) systems, where the third embodiment is a frame structure used for the end node to operate in different (sub) systems. The first embodiment is described first.

It is noted that as used herein, a system or subsystem may also be referred to as a term "domain".

First embodiment

Fig. 2 is a block diagram showing a scheduling unit 200 according to an embodiment of the present invention, which shows placement positions of exemplary control information, feedback information, synchronization signals, and the like of the present invention.

The invention provides a method for dividing frame structure resources in a wireless communication system. The method may include selecting a number of symbol combinations in a number of frames to transmit control or feedback information together. First, one scheduling unit 200 may be composed of a plurality of frames, such as 48 frames shown in fig. 2.

For control information, a first number of frames (e.g., 8 frames) are configured as frames Cf containing control information at 48 frames, wherein a number of control symbols C' are selected in each frame for control information transmission. Thus, as shown in fig. 2, in 48 frames of one scheduling unit, two symbols (16 symbols in total) can be selected for transmission of control information with each frame out of the first 8 frames. In this way, the terminal node will first receive the control information, and determine whether to continue to receive the remaining frames in the scheduling unit according to the decoding content of the control information, so as to save power and avoid unnecessary power consumption. The signaling or provision calculates the position and number of frames containing the control part, and the symbol position and number for control per frame, at the start of the scheduling unit 200. In addition, the SLIV method (indicating the number of start frames and consecutive frames) can be simplified to indicate the number and location of frames containing the control portion. Also, the use of SLIV methods (indicating the number of start symbols and consecutive symbols) to indicate the symbol positions and numbers used for control per frame can be simplified. Further, it may be simplified to signaling or specify the number of frames that continuously contain the control portion starting from the first frame of the scheduling unit 200. Also, signaling or provision indicates the number of consecutive control symbols per frame starting with the first symbol.

For the feedback information, a method similar to the control information is adopted, but the start frame may be calculated forward from the last frame of the scheduling unit 200. At the end of the 48 frames, a number of frames (e.g. 8 frames) are configured as frames Tf containing control information, and a number of control symbols T' are selected in each frame for control information transmission. Thus, as shown in fig. 2, in 48 frames of one scheduling unit 200, two symbols (8 symbols in total) can be selected for transmission of control information with each frame out of the end 4 frames. In this way, the terminal node can give feedback information on the basis of receiving the control data, and possibility is provided for quick feedback. The signaling or provision calculates the position and number of frames containing the feedback portion, and the symbol position and number for feedback per frame, at the end point of the scheduling unit 200. In addition, the SLIV method (indicating the number of start frames and consecutive frames) can be simplified to indicate the number and location of frames containing the feedback portion. Also, the use of SLIV methods (indicating the number of start symbols and consecutive symbols) to indicate the symbol position and number for feedback per frame can be simplified. Further, it may be simplified to signal or specify the number of frames that indicate the reverse succession of feedback portions starting from the last frame of the scheduling unit 200. Likewise, signaling or provision indicates the number of symbols in each frame that are used for feedback in reverse succession starting with the last symbol.

Based on such a design, the transmission of control information would be located at the front end of the scheduling unit and the feedback information would be located at the back end of the scheduling unit. It may help to save power and reduce delay.

Furthermore, for the control information, the frequency resources used (frequency domain starting point and/or bandwidth) may be configured so that other remaining frequency resources may still be used for data transmission. In addition, the feedback information may be configured periodically, for example, a set of feedback resources is configured every N scheduling units. Or a set of resources is configured every N milliseconds. Thus avoiding frequent feedback and reducing system overhead. For feedback information, the frequency resources used (frequency domain starting point and/or bandwidth) may be configured so that other remaining frequency resources may still be used for data transmission.

Furthermore, the calculation of the control part frames or feedback part frames may be physically continuous or logically continuous (i.e. only valid frames and/or valid symbols are considered).

For synchronization information, the period may be configured and indicated, sent periodically. The initial access of the terminal device may be received with a default period, such as 20 ms. The synchronization signal may be fixedly placed near the intermediate frame of the scheduling unit, so that collisions with the control part frame or the feedback part frame are avoided. Upon occurrence of a (symbol) collision, the control or feedback portion frame may skip the synchronization signal frame (and/or broadcast message frame/symbol) and forward calculate the number of frames (i.e., non-consecutive) or skip the synchronization signal frame (and/or broadcast message frame/symbol) and not forward calculate the number of frames.

For broadcast information, on-demand delivery may be employed. The terminal node can send a request message, and the management node sends a corresponding system message to the terminal node according to the received request message. The management node may configure the time-frequency resources and the code resources to correspond to one or more different system messages. When a terminal node needs a certain system message, the corresponding time-frequency resource is adopted to send information to trigger the management node to correspondingly send the corresponding system message. The resource allocation may be common or terminal node specific. For example, the corresponding time-frequency resources, and the offset or code resources are configured to the terminal node, and the terminal node may send a corresponding physical signal (such as a sounding signal SRS or a feedback signal like PUCCH) to request a corresponding system message. If the configuration is public, the management node will broadcast the transmission after receiving, and the broadcast ID is used for scrambling CRC. If the configuration is specific to the terminal node, the management node unicast-transmits after receiving, adopts the terminal node ID to scramble the CRC, and can adopt a corresponding link self-adaptive mechanism to improve the transmission performance. In addition, the terminal device may also request a system message by transmitting a data channel. The required system messages are carried in the data channel. When there is data transfer, the requested system message indication may also be carried in the MAC header (header).

In addition, the manner adopted may be different for different device types, for example, for a vehicle-mounted fixed device, both the device information and the ID are already stored in the management node, and a device specific configuration may be adopted. Whereas for mobile devices, such as handsets, a common settings configuration may be employed. The device type can be reported as the device capability when a connection is established or first registered, and the management node can make different settings and schedules according to the device type.

Meanwhile, for the switching capability of different devices, a symbol before or after the switching point of each frame can be additionally used for switching, and after the additional switching symbol is reported to the management node by the terminal node, the management node reserves a corresponding symbol in the scheduling. In addition, the synchronization signal may be periodically placed at a specific location of some frames and provide certain timing information.

Fig. 3 is a flowchart illustrating a method 300 for a multi (sub) system shared frame configuration according to a first embodiment of the present invention. The method 300 is for operating in a first device of a first (sub) system, wherein the first (sub) system is a high priority system.

In step S305, the first device receives a signaling request from a second (sub) system, where the signaling request is used to request at least one time symbol in a reserved shared frame of the first (sub) system to transmit information to the second (sub) system. In one embodiment, the information is control information, feedback information, synchronization signals, or broadcast information. In yet another embodiment, the at least one time symbol is one time symbol before and after a switching point of the shared frame.

Next, in step S310, the first device reconfigures the time symbols for the first (sub) system in the shared frame according to the signaling request. In other words, the first device reserves at least one time symbol requested by the second (sub) system for transmission of the message by the second (sub) system.

Finally, in step S315, the first device broadcasts configuration information indicating the time symbols for the first (sub) system in the shared frame.

Second embodiment

Fig. 4 is a schematic diagram showing a structure of a multi (sub) system sharing frame 400 according to an embodiment of the present invention. As shown in fig. 4, two (sub) systems share a C-link (or downlink) symbol and a T-link (or uplink) symbol in one frame 400.

As shown in fig. 4, in a frame 400 containing 9 symbols (reference), the first (sub) system uses symbol #0/1/2/4/6/7 in frame 400 and the second (sub) system uses the remaining symbols (# 3/5/8) in frame 400. The two (sub) systems achieve symbol-level time division multiplexing by using different symbols in the frame 400. Multiple (sub) systems may have different subcarrier spacing and cyclic prefix lengths. Thus, one reference frame 400 structure may be defined based on one reference subcarrier spacing and cyclic prefix. When the subcarrier spacing and the cyclic prefix length adopted by each (subsystem) are the same, the sharing can be directly performed based on the frame structure without defining a reference frame structure. As shown in fig. 4, the first (sub) system may be non-continuously distributed in time using part of the symbols in the (reference) frame 400 structure. Therefore, the first (sub) system can flexibly perform the transceiving conversion by using the position of the symbol #3 of the second (sub) system, thereby flexibly setting the symbol #4 as a C (downstream) or T (upstream) symbol. Also, the second (sub) system can perform transmit/receive conversion using the positions of the symbols #2, #4, #6/7 of the first (sub) system, thereby flexibly setting the symbols #3, #5 and #8 as C (downstream) or T (upstream) symbols. Therefore, from the operation point of the whole shared system, special GP time and symbols are not required to be reserved, the time resource utilization efficiency is improved, and the flexible symbol level receiving and transmitting configuration possibility of the (sub) system in the same frame is provided.

Furthermore, different (sub) systems may define respective schedule frames, and a schedule frame is made up of a plurality of (reference) frames and symbols of the (sub) systems in the frames. The schedule frame may be composed of consecutive N (reference) frames or consecutive N valid (reference) frames. When no symbol is defined in a frame for use by the (sub) system, the frame may be defined as an invalid (reference) frame. The length of the scheduling frame may be given by the system signaling or the scheduling signaling. The user knows the amount of time resources available based on the scheduled frame length (i.e., the number of frames) and the available symbols in the frames (some system resource overhead symbol positions may be excluded). In addition, each (sub) system may also configure its own common superframe structure for placing some system messages (e.g., synchronization signals, broadcast signals). Unlike the schedule frame, the super frame is fixed in length and is mainly used for defining the placement position of the system public message.

Furthermore, different (sub) systems may have respective synchronization signals and/or sequences for differentiation. Such as sync numbers {0, …,21} for use by the first (sub) system and sync numbers {22, …,36} for use by the second (sub) system or other sub systems. The user may identify a system class and/or a priority of the system based on the synchronization sequence number. For example, the first (sub) system is a high priority system and the second (sub) system is a (sub) priority system.

In one embodiment, the signal sequence d _FTS (n) can be expressed by the following formula:

Where u=1 for the high priority system and u=40 for the (secondary) priority system.

The second (sub) system user or management node may search for the presence of the first (sub) system periodically or upon initial setup. If so, the second (sub) system communicates with the first (sub) system, issuing a signaling request to reserve certain symbol positions in the frame for transmission by the second (sub) system. The first (sub) system management device may acknowledge the request and inform about the corresponding symbol position after receiving it. At the same time, the first (sub) system management device updates the system broadcast message indicating the symbol positions available to the first (sub) system in the new frame structure. Likewise, when the second (sub) system is no longer present or the number of users is small, the management node of the second (sub) system may inform the management node of the first (sub) system that the recovery of all or part of the resources occupied by the second (sub) system is requested. The first (sub) system management node will readjust the resource allocation after receiving, withdraw the resources occupied by the second (sub) system to be reused for the first (sub) system, and update the available resources (available symbols and position update in the frame) by signaling.

In addition, the first subsystem may determine a change in frame structure based on the presence or absence of other subsystems. Such as: when a second (sub) system or other sub-system exists, a 9-symbol (reference) frame structure is adopted; when no second (sub) system or other sub-system is present, i.e. only it is present, a new (reference) frame structure is used, which may contain specific GP positions or symbols for its own transceiving transitions (e.g. only 8 symbols plus two GP positions). In other words, the GP symbol may not be needed when the multi (sub) system shares the frame structure at the symbol level. Thus, each (sub) system, or at least the first (sub) system, may indicate the (reference) frame structure used in the broadcast message, and may include one or more of the following parameters: the number of symbols in total for the (reference) frame, whether or not the proprietary GP is contained, the available symbols in each frame. Can be defined in a tabular manner in a table, indicated by a signalling given index. In addition, the release, establishment, and update of the (sub) system can also determine the effective time based on a timer or some absolute time of the signaling broadcast, ensuring that no ambiguity zones occur.

When there is a priority for different (sub) systems, such as the first (sub) system has the highest priority, non-first (sub) system users or management nodes should search for the first (sub) system preferentially. Thus, the first (sub) system may have a different synchronization sequence to prioritize than the second (sub) system or other (sub) systems. The particular search order or priority may be based on a pre-configuration or network configuration.

In addition, when the (sub) system transmits a broadcast message (like Master Information Block), it may be transmitted in multiple segments, each segment being intended to be transmitted in a different superframe. Thus, each segment needs to be given a segment number, from which the user can infer the particular superframe number and thus perhaps the (sub) system timing. Assuming a total of 4 segments, requiring 2 bits of information, these two bits of information can be carried in the broadcast message and placed in the most reliable position in the corresponding Polar codes, thus enabling early accurate decoding of the segment numbers. The early decoding of the segment number may further be used for combined decoding of multiple segments of the broadcast information. In addition, the two-bit segment number information can be carried in CRC of the broadcast message by scrambling, and users can combine the two-bit segment number information through blind solution.

Fig. 5 is a schematic diagram illustrating another configuration of a shared frame 500 for multiple (sub) systems according to an embodiment of the invention. When the first symbol #0 of the frame is used for transmission by the first (sub) system, the last symbol #8 of the frame is applied to the second (sub) system or other sub-systems to at least ensure that the first (sub) system can utilize the symbols of the other (sub) systems (the last symbol of each frame for the first sub-system is a reserved symbol, which can be used for other sub-systems) or the reserved symbols between the received symbol at the end of each frame and the first transmitted symbol of the next frame to achieve transceiving conversion. From the first (sub) system, the symbols for the other (sub) systems may be standardized as reserved symbols, informing the user that they are not available by (broadcast) signaling. Likewise, for other subsystems, symbols not belonging to the subsystem are marked as reserved symbols through broadcast signaling, so that the user is informed of unavailability. So that each (sub) system only uses the resources available in each frame.

In addition, certain symbols may be shared by multiple subsystems and temporarily marked as available or unavailable by dynamic signaling. When signaling gives a frame structure, the frame structure of other (sub) systems need not be given, and only the symbol positions needed by the system can be given, and other positions are marked as reserved or unavailable. In addition, some symbol positions may be marked as shared, meaning that the symbol is not available by default, only when signaling explicitly indicates that the position is available, such as in data scheduling, and some symbols may be semi-static, static or dynamic signaling indicating whether the symbol is available for (data) transmission. In principle, the control channel and overhead do not map on such shared symbols.

The first (sub) system management node or the central node controlling a plurality of (sub) systems can provide the symbol number and position allocation for other (sub) systems or among the systems, and each (sub) system decides the receiving and transmitting or uplink and downlink allocation of each allocated symbol and informs the user through signaling broadcast.

Fig. 6 is a flowchart illustrating a method 600 for a multi (sub) system shared frame configuration according to a first embodiment of the present invention. The method 600 is for operating in a first device of a first (sub) system.

In step S605, the first device determines whether the first (sub) system is a high priority system, wherein the first device determines whether the first (sub) system is a high priority system based on the synchronization serial number of the first (sub) system.

When the first (sub) system is the high priority system (yes in step S605), the first apparatus determines allocation of a plurality of time symbol resources for a shared frame in a multi (sub) system in step S610.

When the first (sub) system is not the high priority system (no in step S605), the first device may transmit a signaling request to the high priority system to request the high priority system to reserve at least one time symbol in a shared frame for the first (sub) system to transmit information in step S615.

Third embodiment

Fig. 7 is a schematic diagram showing a structure of a multi (sub) system sharing frame according to an embodiment of the present invention. As shown in fig. 7, two (sub) systems share a C-link (or downlink) symbol and a T-link (or uplink) symbol in one frame.

Assume that a radio frame of a wireless short-range communication system has a length tf=640×ts, about 20.833us, where ts=1/30.72 mhz=0.0326 us, and is transmitted using CP-OFDM symbols. The CP-OFDM symbol includes a cyclic prefix portion and a valid data portion in a time domain. The effective data portion has a length of 64Ts and is approximately 2.0833us. The length of the cyclic prefix is divided into two cases, a normal cyclic prefix and an extended cyclic prefix, respectively. The length of the conventional cyclic prefix is 5Ts, about 0.1628us, when each radio frame contains 8 CP-OFDM symbols; the extended cyclic prefix has a length of 14Ts, approximately 0.4557us, when each radio frame contains 7 CP-OFDM symbols.

And C link transmission is firstly carried out on each wireless frame of the vehicle-mounted wireless short-distance communication system, and then T link transmission is carried out. The switching interval after the transmission of the C link in each radio frame is a first switching interval, and the switching interval after the transmission of the T link is a second switching interval. In the case of conventional cyclic prefix, the duration of each switching interval is 44Ts, approximately 1.4322us; in the case of extended cyclic prefix, the duration of each switching interval is 47Ts, approximately 1.5299us.

Thus, when multiple (sub) systems share a transmission, additional support of new frame structures may be considered. The new frame structure does not set GP symbols specially any more, but realizes the receiving-transmitting switching by supporting the mode that a plurality of (sub) systems are configured to use symbols in the frame in a staggered way and the symbols are mutually GP, thereby fully using resources and avoiding GP overhead specially used for receiving-transmitting switching.

In the new frame structure the effective data portion length is still 64Ts, approximately 2.0833us. At this time, the length of the cyclic prefix in the new frame structure remains in two cases, a normal cyclic prefix and an extended cyclic prefix, respectively. For a conventional cyclic prefix frame structure (as shown in table 1), the length of the conventional cyclic prefix of the first symbol (or the last symbol) is 8Ts, about 0.2604us, and the length of the conventional cyclic prefix of the other symbols is 7Ts, about 0.2279us. The frame structure of the conventional cyclic prefix now contains 9 CP-OFDM symbols; for the extended cyclic prefix frame structure (shown in table 2), the extended cyclic prefix has a length of 16Ts, about 0.5208us, when each radio frame contains 8 CP-OFDM symbols. Thus, the overall frame length is unchanged from the original frame structure, still being 640ts,20.833us.

TABLE 1 frame structure with conventional cyclic prefix when multiple (sub) systems coexist

TABLE 2 frame structure with extended cyclic prefix when multiple (sub) systems coexist

Compared with the traditional frame structure based on the proprietary GP symbol, the new frame structure greatly improves the resource utilization rate when a plurality of (sub) systems coexist. Under the condition of adopting the conventional cyclic prefix, the length of the cyclic prefix in the new frame structure is increased (under the condition of NCP, the NCP of the first symbol in the 9-symbol frame structure when a plurality of systems coexist is 8Ts, the NCP of other symbols is 7Ts, and the NCP of the original 8-symbol frame structure is 5 Ts), so that the coverage range is expanded. In addition, the new frame structure of 9 effective symbols increases the system resource utilization by 12.5% compared to 8 effective symbols in the original frame structure. In the case of using extended cyclic prefix, the cyclic prefix length in the new frame structure is increased (in the case of ECP, ECP length in 8-symbol frame structure when multiple systems coexist is 16Ts, compared with the ECP of 7-symbol frame structure of the original ECP, ECP is 14 Ts), and coverage is extended. Furthermore, the new frame structure of 8 effective symbols increases the system resource utilization by 14.3% compared to 7 effective symbols in the original frame structure.

Taking a wireless short-range communication system as an example, the number of symbols used for the C-link (or downlink) and T-link (or uplink) in a radio frame supports the following two sets of configurations.

The conventional cyclic prefix case, the frame structure with and without dedicated GP may employ the C/T symbol ratios of table 3.

When the signaling indicates an NCP frame structure with 8 symbols (as shown in table 3), the terminal node uses the position of C/T symbol conversion and the position after the last T symbol as the dedicated GP position, and uses the dedicated GP length configured according to the frame structure.

When the signaling indicates a 9-symbol NCP frame structure, the terminal node may interpret the C/T proportioning signaling differently according to whether it is currently operating in the first (sub) system (or advanced domain) or the second (sub) system (or normal domain):

When the terminal node is operating in the advanced domain, the first 8 symbol positions in the 9 symbol frames correspond one-to-one with the 8 symbol positions in table 3. At this time, the last symbol is regarded as an invalid symbol by default in the field, but may be used as a GP.

When the terminal node operates in the normal domain, the last 8 symbol positions in the 9 symbol frames correspond one-to-one with the 8 symbol positions in table 3. At this time, the first symbol is regarded as an invalid symbol by default in the field, but can be used as a GP.

TABLE 3 proportioning of radio frame C and T symbols in a conventional cyclic prefix based configuration

When the signaling indicates a 7-symbol ECP frame structure (as shown in table 4), similar to the processing manner of an 8-symbol NCP frame structure, the terminal node uses the position of the C/T symbol conversion and the position after the last T symbol as the dedicated GP position, and uses the dedicated GP length configured according to the frame structure.

When the signaling indicates an 8-symbol ECP frame structure, the terminal node performs different interpretations on the C/T matching signaling according to whether the terminal node is currently operating in the first (sub) system (or the advanced domain) or the second (sub) system (or the normal domain) in a similar 9-symbol NCP frame structure processing manner:

When the terminal node is operating in the advanced domain, the first 7 symbol positions in the 8 symbol frames correspond one-to-one with the 7 symbol positions in table 4. At this time, the last symbol is regarded as an invalid symbol by default in the field, but may be used as a GP.

When the terminal node operates in the normal domain, the last 7 symbol positions in the 8 symbol frames correspond one-to-one to the 7 symbol positions in table 4. At this time, the first symbol is regarded as an invalid symbol by default in the field, but can be used as a GP.

TABLE 4 proportioning of radio frame C and T symbols in extended cyclic prefix based configuration

The signaling may indicate whether it is a higher domain or a normal domain, and in particular what symbol length and frame structure of CP length.

For each domain, it is possible to indicate by the signaling of the respective domain which symbols (except for the default unavailable symbols) are not available in that domain, so that, in combination with the C/T symbol proportioning and the available symbol configuration, the actual symbol usage and proportioning settings of the respective domain are formed. In addition, when coexistence is achieved using a new frame structure, since there is no dedicated GP position, the advanced domain needs to configure and reserve a proper symbol position, so that the advanced domain and the normal domain can use the symbol position of other domains (or the invalid symbol position of the home domain) for C/T conversion.

For example, as shown in fig. 7, the first (sub) system 710 (or higher-level domain) indicates in the broadcast signaling that a frame structure of 9 symbols and a second interval time (GT 2) is formed, while giving a C/T allocation (5C: 3T) defined in 8 symbols (corresponding to the first 8 symbols of 9 symbols), and giving an information indication of reserved symbols (unavailable symbols) (such as an 8-bit bitmap corresponding to symbols in the C/T allocation) indicates that symbols #3, #5, and #7 are unavailable. In another example, available symbols may be indicated in broadcast signaling. In the example of fig. 7, #1, #2, #4, #6, #8 may be indicated as available. The terminal node of the domain receives the C/T ratio of 8 symbols, combines the first 8 symbol positions of the 9 symbol frame structures and the reserved symbol (unavailable symbol) indication information to obtain the actual available symbol position and the C/T ratio of the domain, namely 3C:2T, symbols #1, #2, #4 corresponding to the 9 symbols are transmitted as C, and symbols #6, #8 are transmitted as T. The C/T ratio can be used as a basic configuration. If desired, the intra-domain signaling may further configure its updates on this basis to 2C:3T, at which time C of #4 may be adapted as a T node, and reserved symbols #3 and #5 before and after it are used as GP. Further, symbol #9 is a first interval time (GT 1). In this embodiment, symbols #7 and #9 may also be used as GP.

Also for example, as shown in fig. 7, the C node of the second (subsystem) 720 (or the normal domain) may signal with the C node of the first (subsystem) (or the advanced domain) by signaling, so as to apply for the number and location of symbols in a frame that are needed by itself. The C node of the first (sub) system (or higher-level domain) may inform the C node of the second (sub) system (or normal domain) of the available frame structure, number of symbols and location by broadcast or unicast signaling. As shown in fig. 7, the default reserved symbols #3, #5, #7, and 9 of the first (sub) system 710 (or the advanced domain) reserved symbols #9 in the frame structure of symbols may be allocated for use as the second (sub) system 720 (or the normal domain). Thus, the C node of the second (sub) system 720 (or the normal domain) may broadcast a frame structure indicating that the domain is composed of 9 symbols and a second interval (GT 2), giving a C/T-ratio (4C: 4T) defined in 8 symbols (corresponding to the last 8 symbol positions of the 9 symbols), and giving an information indication of reserved symbols (unavailable symbols) (e.g. an 8-bit bitmap corresponding to the symbols in the C/T-ratio) indicating that the symbols #2, #4, #6 and #8 are unavailable. In another example, available symbols may be indicated in the signaling. In the example of fig. 7, #3, #5, #7, #9 may be indicated as available. The terminal node of the domain receives the C/T ratio of 8 symbols, combines the following 8 symbol positions of the 9 symbol frame structure, and obtains the actual available symbol position and the C/T ratio in the domain based on the reserved symbol (unavailable symbol) indication information of the following 8 symbols, namely 2C:2T, symbols #3 and #5, which are respectively located in 9 symbols, are transmitted as C, and symbols #7 and #9 are transmitted as T. The C/T ratio may be used as a basic configuration, and if necessary, the intra-domain signaling may further update its configuration to 1C:3T, at which time C of #5 may be adapted as a T node, and reserved symbols #4 and #6 before and after it are used as GP. In addition, symbol #1 is a first interval (GT 1). In this embodiment, symbols #1, #2, and #8 may also be used as GP.

Further, when the second (sub) system (or the normal domain) is shared by a plurality of (sub) systems (or the normal domain). The first (sub) system (or higher-level domain) C node may give those frame resources allocated for each common domain use, e.g. give a bitmap at the frame level for each frame, available when set to 1; otherwise, not available. The allocation and usage is then repeated according to the length of the bitmap, possibly with a different bitmap received by each generic domain.

In addition, the frames used by the respective normal domains may be derived by modulo arithmetic, and the first (sub) system (or advanced domain) C node may give a number of resources N, and then the frame resources of each domain may be determined by the number M allocated by each normal domain (signaled by the advanced domain C node), the frame number X, and the number of resources N. Such as: for frame X, frames Mod (X, N) =m are allocated for domain M to use.

Furthermore, a 1-bit inversion indicator may be added to the signaling, and an inversion configuration is given for the C/T ratio, that is, the C/T configuration given in the original configuration becomes a T/C configuration, for example, when the inversion indicator is set to 1, 5C is given in the signaling: the 3T ratio would be interpreted as 5T:3C; if set to 0, then this is unchanged.

Note that in different embodiments, the above schemes may be implemented alone, or any two or more of them may be implemented in combination.

Fig. 8 illustrates an exemplary terminal node 1000 in accordance with an embodiment of the present invention. Terminal node 1000 can be used with various embodiments of the present invention. In different examples, terminal node 1000 can be a cell phone, tablet computer, desktop computer, vehicle-mounted device, and the like. As described in the above examples, terminal node 1000 is capable of communicating with a wireless communication network, such as a 4th generation (4th Generation,4G) LTE network, a 5G NR network, or a combination thereof, as well as an in-vehicle wireless communication system. Terminal node 1000 can include processing circuitry (processing circuit) 1010, memory 1020, and Radio Frequency (RF) module 1030.

In one example, processing circuitry 1010 may be used to perform the functions of end node 1000 in various embodiments by executing program instructions stored in memory 1020. For example, the processing circuitry 1010 may perform the functions and processes described herein. Memory 1020 may store program instructions that may cause processing circuitry to perform the functions of terminal node 1000. The Memory 1020 may include a temporary or non-temporary storage medium such as Read Only Memory (ROM), random access Memory (Random Access Memory, RAM), flash Memory (flash), hard disk drive, etc.

The processing circuit 1010 may also be used to perform the functions or processes of the PHY layer in the various embodiments described herein, with or without executing program instructions stored in the memory 1020. As described herein, functions or processes of the PHY layer may include synchronization, L1/L2 control channel or data channel decoding, and the like. In addition, the functions of the PHY layer may also include coding, modulation, and the like.

RF module 1030 receives processed data signals from processing circuit 1010 and transmits the data signals via antenna 1040 to a management node in a wireless communications network and vice versa. The RF module 1030 may include various circuits such as digital-to-analog converters (Digital to Analog Convertor, DACs), analog-to-digital converters (Analog to Digital Convertor, ADCs), up-converters (frequency up converter), down-converters (frequency down converter), filters, amplifiers, and the like for receive and transmit operations.

Terminal node 1000 can optionally include other components such as input and output devices, other additional signal processing circuitry, and the like. Thus, terminal node 1000 can perform other additional functions, such as executing applications and handling alternative communication protocols.

The processes and functions described herein may be implemented as a computer program that, when executed by one or more processors, causes the one or more processors to perform the processes and functions. The above-described computer program may be stored or distributed on a suitable medium, such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware. The computer program described above may also be distributed in other forms, such as via the internet or other wired or wireless telecommunication systems. For example, the above-described computer program may be obtained through a physical medium or a distributed system (e.g., a server connected to the internet) and loaded into the apparatus.

The computer program described above can be accessed from a computer readable medium for providing program instructions for use by or in connection with a computer or any instruction execution system. The computer-readable medium can comprise any means for storing, communicating, propagating, or transmitting a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable medium can be a magnetic, optical, electronic, electromagnetic, infrared, or semiconductor system (or apparatus or device) or a propagation medium. The computer readable medium may include a computer readable non-transitory storage medium such as a semiconductor or solid state memory, magnetic tape, removable computer diskette, RAM, ROM, magnetic disk, optical disk and the like. The computer-readable non-transitory storage media described above may include all kinds of computer-readable media including magnetic storage media, optical storage media, flash memory media, and solid-state storage media.

The use of ordinal terms such as "first," "second," "third," etc., in the claims to modify a component does not by itself connote any priority, precedence, or order of one component over another or the temporal order in which a method is performed, but are used merely as labels to distinguish one component having a certain name from another component having a same name (except for the ordinal term).

While the invention has been described with reference to certain illustrative embodiments, it is not intended to be limiting. Accordingly, various adaptations, modifications, or combinations of the various features of the described embodiments can be made without departing from the scope of the invention, which is defined by the following claims.

Claims (18)

1. A method for multiple systems or multiple subsystems sharing a frame configuration for operation in a first system or a first device of a first subsystem, comprising:

Judging whether the first system or the first subsystem is a high priority system or not by the first device, wherein the first device judges whether the first system or the first subsystem is a high priority system or not based on a synchronous serial number of the first system or the first subsystem;

receiving, by the first apparatus, allocation information for a plurality of time symbol resources in a shared frame in a plurality of systems or subsystems from the first system or first subsystem when the first system or first subsystem is the high priority system;

determining, by the first apparatus, a time symbol for a second system or a second subsystem based on the allocation information received from the first system or first subsystem; and

Configuration information is broadcast by the first device, wherein the configuration information indicates the time symbols for the second system or second subsystem in the shared frame.

2. The method for multiple systems or multiple subsystems sharing a frame configuration of claim 1, further comprising:

Receiving a signaling request from a second system or a second subsystem, wherein the signaling request is used for requesting the first system or the first subsystem to reserve at least one time symbol in the shared frame for the second system or the second subsystem to transmit information; and

And determining a time symbol for the second system or the second subsystem in the shared frame according to the signaling request.

3. The method for multiple systems or multiple subsystems sharing a frame configuration according to claim 1, wherein when there are multiple systems time-division multiplexing the shared frame, the first system or first subsystem configures discrete time symbol resources and avoids configuring dedicated GP resources; and configuring the shared frame by the first system or the first subsystem to have the dedicated GP resource when no system other than the first system or the first subsystem uses the shared frame.

4. The method for multiple system or multiple subsystem shared frame configuration of claim 1, wherein the shared frame is composed of a plurality of time symbols, a first interval time (GT 1) and a second interval time (GT 2) in sequence.

5. The method for multiple systems or multiple subsystems shared frame configuration of claim 4, wherein the first interval is an inactive symbol for configuring dedicated GP resources.

6. The method for multiple system or multiple subsystem shared frame configuration of claim 1, wherein when the first system or first subsystem is a secondary priority system, the shared frame is composed of a first interval time (GT 1), a plurality of time symbols, and a second interval time (GT 2) in order.

7. The method for multiple systems or multiple subsystems shared frame configuration of claim 6, wherein the first interval is an inactive symbol for configuring dedicated GP resources.

8. The method for multiple systems or multiple subsystems sharing a frame configuration according to claim 2, wherein the information is control information, feedback information, synchronization signals or broadcast information.

9. The method for multiple systems or multiple subsystems sharing a frame configuration according to claim 2, wherein said at least one time symbol is one time symbol before or after a switching point of said shared frame.

10. An apparatus for multiple systems or multiple subsystems sharing a frame configuration, comprising:

One or more processors; and

One or more computer storage media storing computer-readable instructions, wherein the processor uses the computer storage media to perform:

judging whether a first system or a first subsystem is a high-priority system or not, wherein judging whether the first system or the first subsystem is the high-priority system or not based on a synchronous serial number of the first system or the first subsystem;

receiving, by the apparatus, allocation information for a plurality of time symbol resources in a shared frame in a plurality of systems or subsystems from the first system or first subsystem when the first system or first subsystem is the high priority system;

determining a time symbol for a second system or a second subsystem based on the allocation information received from the first system or first subsystem; and

Configuration information is broadcast, wherein the configuration information indicates the time symbols for the second system or second subsystem in the shared frame.

11. The apparatus for multiple systems or multiple subsystems shared frame configuration of claim 10, wherein the processor is further to perform:

Receiving a signaling request from a second system or a second subsystem, wherein the signaling request is used for requesting the first system or the first subsystem to reserve at least one time symbol in the shared frame for the second system or the second subsystem to transmit information; and

And determining a time symbol for the second system or the second subsystem in the shared frame according to the signaling request.

12. The apparatus for multiple systems or multiple subsystems sharing a frame configuration of claim 10, wherein the first system or first subsystem configures discrete time symbol resources and avoids configuring dedicated GP resources when there are multiple systems time-division multiplexing the shared frame; and configuring the shared frame by the first system or the first subsystem to have the dedicated GP resource when no system other than the first system or the first subsystem uses the shared frame.

13. The apparatus for multiple system or multiple subsystem shared frame configuration of claim 10, wherein the shared frame is comprised of a plurality of time symbols, a first interval (GT 1) and a second interval (GT 2) in sequence.

14. The apparatus for multiple systems or multiple subsystems shared frame configuration of claim 13, wherein the first interval is an inactive symbol to configure dedicated GP resources.

15. The apparatus for multiple system or multiple subsystem shared frame configuration of claim 10, wherein the shared frame is comprised of a first interval time (GT 1), a plurality of time symbols, and a second interval time (GT 2) in order when the first system or first subsystem is a secondary priority system.

16. The apparatus for multiple systems or multiple subsystems shared frame configuration of claim 15, wherein the first interval is an inactive symbol to configure dedicated GP resources.

17. The apparatus for multiple systems or multiple subsystems shared frame configuration of claim 11, wherein the information is control information, feedback information, synchronization signals, or broadcast information.

18. The apparatus for multiple system or multiple subsystem shared frame configuration of claim 11, wherein the at least one time symbol is one time symbol before or after a switch point of the shared frame.