WO2023206286A1

WO2023206286A1 - Wireless communication method and apparatus for multi-cell scheduling signaling

Info

Publication number: WO2023206286A1
Application number: PCT/CN2022/090058
Authority: WO
Inventors: Kai Xiao; Xianghui HAN; Jing Shi; Shuaihua KOU
Original assignee: Zte Corporation
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2023-11-02

Abstract

Wireless communication methods and corresponding apparatus and non-transitory computer-readable storage medium are disclosed. The wireless communication method includes receiving DCI (Downlink Control Information), wherein the DCI includes at least one sub-field; determining whether at least one sub-field is used to control more than one component carriers; and transmitting data by a plurality of PUSCHs or receiving data by a plurality of PDSCHs on a plurality of component carriers based on whether the at least one sub-field is used to control more than one component carriers. Other methods are disclosed in this disclosure, which improve the functionality of wireless communication system.

Description

WIRELESS COMMUNICATION METHOD AND APPARATUS FOR MULTI-CELL SCHEDULING SIGNALING

TECHNICAL FIELD

This disclosure is directed generally to wireless communications and particularly wireless communications associated with multi-cell scheduling.

BACKGROUND

The world is increasingly connected due to the advancement in wireless communication technology. As compared to the existing wireless networks, next generation wireless communication systems may support a much wider range of functions and applications. For example, the next generation wireless communication systems may support multi-channel down-link and/or up-link communication. The signaling issues occur for controlling the multiple channels.

SUMMARY

Techniques are disclosed for improving signaling of DCI to control downlink or uplink transmission on one or more component carriers.

According to one embodiment, this disclosure provides a wireless communication method, including:

receiving DCI (Downlink Control Information) , wherein the DCI includes at least one sub-field;

determining whether at least one sub-field is used to control more than one component carriers; and

transmitting data by a plurality of PUSCHs or receiving data by a plurality of PDSCHs based on whether the at least one sub-field is used to control more than one component carriers.

According to one embodiment, this disclosure provides a wireless communication method, performed by a base station, the method including:

transmitting DCI (Downlink Control Information) , wherein the DCI includes at least one sub-field, to trigger a user equipment (UE) to determine whether the at least one sub-field is used to control more than one component carriers; and

According to one embodiment, this disclosure provides a wireless communication method, performed by a user equipment, the method including:

receiving DCI (Downlink Control Information) , wherein a size of at least one sub-field of the DCI is determined according to a whole bit size n of the DCI and a number m of scheduled component carriers; and

transmitting data by a plurality of PUSCHs or receiving data by a plurality of PDSCHs according to the DCI.

According to one embodiment, this disclosure provides wireless communication method, performed by a base station, the method including:

transmitting DCI (Downlink Control Information) to a user equipment (UE) to configure frequency domain resource allocation of a plurality of scheduled component carriers according to at least one of the following manners:

configuring the frequency domain resource allocation according to a component carrier among the plurality of scheduled component carriers with the largest available frequency domain resource; or

configuring a same starting value for the plurality of scheduled component carriers; or

configuring a starting value with “0” for the plurality of scheduled component carriers, wherein the plurality of scheduled component carriers does not include a reference component carrier; or

configuring the frequency domain resource allocation of the plurality of schedule component carriers based on a ratio between available frequency domain resources of the reference component carrier and available frequency domain resources of another component carrier among the plurality of component carriers; and

transmitting or receiving data based on configuration of the frequency domain resource allocation.

According to one embodiment, this disclosure provides wireless communication method, performed by a user equipment, the method including:

receiving DCI (Downlink Control Information) from a base station, the DCI configuring frequency domain resource allocation of a plurality of scheduled component carriers according to at least one of the following manners:

According to another embodiment, this disclosure provides a wireless communication apparatus, including:

at least one memory, storing at least one program; and

one or more processors, in communication with the at least one memory and configured to executed the at least one program to cause the wireless communication apparatus to perform the any method and step disclosed in this disclosure.

According to another embodiment, this disclosure provides non-transitory computer-readable storage medium, storing at least one program, the at least on program, when executed by one or more processors, causing a wireless communication apparatus to perform the any method and step disclosed in this disclosure.

The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims.

BRIEF DESCRIPTION OF THE DRAWING

Fig. 1 shows an example of multi-component carriers data transmission;

Figs. 2 to 4 show frequency domain resource allocations of multiple component carriers; and

Fig. 5 shows a wireless communication device, apparatus, or system.

DETAILED DESCRIPTION

Wireless communication service nowadays covers more and more application scenarios, with an increasing degree of social digitization. Among them, enhanced mobile broadband, ultra-reliable and low latency communication, and massive machine type of communication have become major scenarios supported by new generation communication systems. In terms of system performance, the new generation system will have a peak transmission rate of 10 to 20 Gigabit per second, 1 million connections per square kilometer, 1 milli-second air interface delay, 500 km/h mobility support, and 10 Mbit/straffic per square meter. The new generation system may also support scheduling of multiple physical downlink shared channels (PDSCHs) or physical uplink shared channels (PUSCHs) located on cells or multiple component carriers (CCs) , coordinated by multiple downlink control information (DCI) . Using multiple transmission channels may further increase throughput of the new generation system.

While scheduling multiple PDSCHs or PUSCHs with multiple pieces of DCI can improve the service throughput, this approach may increase the number of required pieces of DCIs in a system cell. This increase may further cause congestion to a physical downlink control channel (PDCCH) , which carries the multiple pieces of DCI. To mitigate this disadvantage, a new DCI scheduling solution is proposed to schedule multiple PDSCHs or PUSCHs in different CCs or cells to reduce the number of required DCI and the PDCCH blocking rate. The new DCI in this scheme may be used to schedule at multiple PDSCHs or PUSCHs. The PDSCHs or PUSCHs of the multiple CCs may belong to different transmission blocks (TB) , or the same TB, or one TB is located in multiple CCs.

Embodiment 1

Correspondingly, this disclosure provides a wireless communication method, performed by a base station, the method including:

According to one embodiment, the DCI includes n sub-fields, n being an integer not less than 1.

According to one embodiment, the DCI includes N DCI bit fields, N being an integer not less than 1.

According to one embodiment, the n sub-fields are divided from one DCI bit field of the DCI.

In this embodiment, a user equipment (UE) receives DCI (Downlink Control Information) from a base station (BS) . The DCI may include one or more sub-fields, n being an integer not less than 1. For example, a bit field of the DCI may include 32 bits. The 32 bits can be used as one sub-field with 32 bits or can be used as two sub-fields, where each sub-field has 16 bits.

According to the embodiments, the UE or the BS can determine whether at least one of the n sub-fields is shared by more than one component carriers or more than one cells. With the determination result, the UE or the BS can use the DCI to schedule the transmission accordingly, such as to schedule the transmission on a plurality of cells or component carriers.

The UE or the BS can transmit data by one or more PUSCHs or received data by one or more PDSCHs on a one or more cells based on the determination result in the previous step, indicating whether the at least one of the n sub-fields is used to control more than one component carriers.

For example, the DCI from a BS can schedule the UE to receive data on at least one PDSCH (physical downlink shared channel) on at least one cell. Alternatively, the DCI from a BS can schedule the UE to send data on at least one PUSCH (physical uplink shared channel) on at least one cell. Alternatively, the DCI from a BS can schedule a plurality of PDSCHs and/or PUSCHs on a plurality of cells.

According to one embodiment, transmission blocks carried by the plurality of PDSCHs or the plurality of PUSCHs are different.

According to one embodiment, transmission blocks carried by the plurality of PDSCHs or the plurality of PUSCHs are the same.

According to one embodiment, transmission blocks carried by the plurality of PDSCHs or the plurality of PUSCHs are partially different and partially identical.

As shown in Fig. 1 as an example, which depicts an example transmission arrangement according to one embodiment of this disclosure. In this embodiment, PDCCH is used to carrier the DCI in a CC-x component carriers. Four CCs (CC-a to CC-d) are used to transmit data in four PDSCH and/or PUSCH. The data is transmission in transmission blocks TB1 to TB4 in the respective channels. In one implementation, the data in TB1 to TB4 can be different, identical, or partially different and partially identical between TB1 to TB4.

According to one embodiment, determining whether the at least one sub-field is used to control more than one component carriers (CCs) includes determining whether an m number of component carriers scheduled by the base station is larger than n, m being an integer larger than 0.

According to one embodiment, determining whether the at least one sub-field is used to control more than one component carriers includes determining that (m-n) component carriers of m component carriers share one or more of the n sub-fields when m is larger than n, m being an integer larger than 0.

For example, at least one DCI bit field (such as frequency domain resource allocation (FDRA) ) in the DCI is configured as n independent sub-fields by a base station. When m CCs are scheduled by the base station and m is greater than n, (m-n) CCs may share at least one sub-filed among n sub-fields with another CC.

According to one embodiment, indexes of the m component carriers are stored in a low to high or a high to low sequence.

The cells or CCs scheduled by the DCI are arranged in a certain order. For example, the cells or the CCs can be arranged in a low to high order or, alternative, in a high to low order according to the cell indexes or the CC indexes of respective cells or CCs.

According to one embodiment, the wireless communication method further includes determining that the first (m-n) or the last (m-n) component carriers of the m component carriers share the one or more of the n sub-fields.

For example, the first (m-n) scheduled cells or CCs in a low to high order (or alternatively in a high to low order) may be selected as the remaining cells or CCs, which share the at least one of the n sub-fields with another CCs or cells when the number of the scheduled component carriers is larger than the number n of the sub-fields of the DCI.

Alternatively, the last (m-n) scheduled cells or CCs in a low to high order (or alternatively in a high to low order) may be selected as the remaining cells or CCs, which share the at least one of the n sub-fields with another cells or CCs when the number of the scheduled component carriers is larger than the number n of the sub-fields of the DCI.

That is, the sharing cells or CCs are those with highest indexes or alternatively lowest indexes when the number of the scheduled component carriers m is larger than the number n of the sub-fields of the DCI.

This arrangement may allow the field of the DCI to be configured with flexibility. It may further save DCI overhead when one or more scheduled cells or CCs are sharing one or more sub-field of the DCI. It may also make the use of the bits of the DIC more efficient.

Embodiment 2

Correspondingly, wireless communication method, performed by a base station, the method including:

According to one embodiment, determining whether the at least one sub-field is used to control more than one component carriers includes determining (p-q) component carriers share the one or more of the n sub-fields when a p number of scheduled component carriers is larger than a threshold q, p and q being integers not less than 1.

According to one embodiment, the wireless communication method further includes receiving the threshold q from a base station.

According to one embodiment, the wireless communication method further includes transmitting the threshold q to the UE.

Specifically, a base station can expressly or otherwise implicitly indicate a threshold q, which can be the maximum allowed number of cells or CCs. For example, the base station can configure the threshold q by high-level signaling. Alternatively, the base station can provide the threshold q to the UE through dynamic signaling. Alternatively, the threshold q can be pre-defined.

When the UE determines that there are p scheduled component carriers and that p is larger than the threshold q, the UE can determine that at least one component carrier shares a same sub-field of the DCI with another scheduled carrier component. Specifically, the UE may determine that (p-q) component carriers in total share the one or more of the n sub-fields with another one of the p schedule component carriers.

According to one embodiment, the wireless communication method further includes determining that a bit filed of the DCI is divided into q sub-fields when a p number of scheduled component carriers is larger than a threshold q, p and q being integers not less than 1.

According to one embodiment, the wireless communication method further includes determining that a bit field of the DCI is divided into p sub-fields when a p number of scheduled component carriers less than or equal to a threshold q, p and q being integers not less than 1.

When the number p of the schedule cells or CCs actually scheduled by the BS is not larger than (i.e. smaller or equal to) the threshold q, the UE can understand that the DCI bit field is divided or understood by the UE as p independent sub-fields. That is, the DCI bit field may be divided into p sub-fields, and each sub-field corresponds to one actually scheduled cells or CC and control the configuration of the corresponding cells or CCs.

When a number p of the cells or CCs are actually scheduled by the BS, the UE can understand that the DCI bit field is divided or understood by the UE as p independent sub-fields. That is, the DCI bit field may be divided into p sub-fields, and each sub-field corresponds to one actually scheduled cells or CC and control the configuration of the corresponding cells or CCs.

Alternatively, when the number p of the schedule cells or CCs actually scheduled by the BS is larger than the threshold q, the UE can understand that at least one scheduled cells or CCs shares the sub-fields of the DCI in order to have at least one DCI sub-field configure each scheduled cell or CC. For example, the UE can understand that the DCI bit field is divided or understood by the UE as q independent sub-fields in order to meet the threshold requirement. The UE can determine the (p-q) cells or CCs share at least one of the n sub-fields with another one scheduled cell or CC.

In one implementation, the BS may transmit the indication of the threshold q to the UE, such that the UE can obtain the information of the threshold q.

According to one embodiment, determining whether the at least one sub-field is used to control more than one component carriers includes determining whether a DCI size is larger than a DCI size threshold

According to one embodiment, determining whether the at least one sub-field is used to control more than one component carriers includes determining whether configuring one sub-field of the DCI for each scheduled cell requires a DCI size larger than a DCI size threshold and determining that the at least one of the n sub-fields is used to control more than one cells when the required DCI size is larger than the DCI size threshold.

According to one embodiment, the wireless communication method further includes receiving information associated with the DCI size threshold from a base station.

According to one embodiment, the wireless communication method further includes transmitting information associated with the DCI size threshold by the base station.

Specifically, a BS can expressly or otherwise implicitly indicate a DCI size threshold, which can be the maximum size of the DCI. For example, the base station can configure the DCI size threshold by high-level signaling. Alternatively, the base station can provide the DCI size threshold to the UE through dynamic signaling. Alternatively, the DCI size threshold can be pre-defined between service provides.

The UE may determine whether configuring one sub-field of the DCI independently for each scheduled cell requires an actual DCI size larger than the DCI size threshold. For example, the BS may schedule p cells or CCs. To assign one sub-field of the DCI independently to each p scheduled cells or CCs may require p sub-fields. If the DCI size threshold is q not smaller than p, then the UE can understand that there is no need to have scheduled cells or CCs share the DCI sub-field because the actual DCI would not excess the DCI size threshold. Alternatively, if assigning one sub-field of the DCI independently to each p scheduled cells or CCs may require an actual DCI size larger than the DCI size threshold q, the UE can understand that the DCI size can only be capped at the DCI size threshold with q sub-fields. The UE can understand that (p-q) scheduled cells or CCs may be share at least one of the q subfields with another scheduled CC or cells.

In one implementation, the BS may transmit the indication of the DCI size threshold to the UE, such that the UE can obtain the information of the DCI size threshold.

According to one embodiment, determining whether the at least one of the n sub-fields is used to control more than one cells includes determining that scheduled cells with highest indexes or lowest indexes share the at least one of the sub-fields of the DCI with another scheduled cell.

The cells or CCs scheduled by the DCI may be arranged in a certain order. For example, the cells or the CCs can be arranged in a low to high order or, alternative, in a high to low order according to the cell indexes or the CC indexes of respective cells or CCs.

For example, the first (p-q) scheduled cells or CCs in a low to high order (or alternatively in a high to low order) may be selected as the remaining cells or CCs, which share the at least one of the n sub-fields with another CC or cell.

Alternatively, the last (p-q) scheduled cells or CCs in a low to high order (or alternatively in a high to low order) may be selected as the remaining cells or CCs, which share the at least one of the n sub-fields with another cell or CC.

That is, the sharing cells or CCs are those with highest indexes or alternatively lowest indexes.

This arrangement may allow the field of the DCI to be configured with flexibility. It may further save DCI overhead when one or more scheduled cells or CCs are sharing one or more sub-field of the DCI. It may also make the use of the bits of the DCI more efficient.

Embodiment 3

determining a size of at least one sub-field of DCI according to a whole bit size n of the DCI and a number m of scheduled component carriers; and

transmitting the DCI to a user equipment (UE) to control one or more PDSCHs or PUSCHs.

Correspondingly, according to one embodiment, this disclosure provides a wireless communication method performed by a user equipment (UE) , the method including:

This embodiment relates to a method to determine a size of a sub-field of the DCI. For example, the size of the sub-field can be determined according to bit size n of the DCI, which is the whole size of a bit field of the DCI, such as the size of the bit field FDRA. The DCI will be transmitted from the BS to the UE to control the uplink or downlink transmission between the BS and the UE.

According to one embodiment, determining the size of the at least one sub-field of the DCI includes determining that the size of the at least one sub-field of the DCI is (n/m) .

As an example, the size of the at least one sub-field of the DCI can be (n/m) , the size of the whole bit field of the DCI divided by the number of scheduled component carriers or scheduled cells. For example, if the size of the whole bit field of the DCI is 32 bits and there are 4 scheduled component carriers or cells, the size of each of the sub-fields of the DCI would be 32/4=8 bit. Each 8-bit sub-field of the DCI corresponds to one scheduled cell or CC.

According to one embodiment, determining the size of at least one sub-field of the DCI includes determine that the size of the first

cells or component carriers as

wherein

represents rounding down to a closest integer of n divided by m.

According to one embodiment, determining the size of the at least one sub-field of the DCI includes determining that the size of the rest of

cells or component carriers as

wherein

represents rounding up to a closest integer of n divided by m.

Alternatively, the size of the first

cells or component carriers can be

and the size of the rest of

cells or component carriers can be

The

represents rounding down to a closest integer of n divided by m, and the

represents rounding up to a closest integer of n divided by m.

For example, if the size of the whole bit field of the DCI is 32 bits and there are 5 scheduled component carriers or cells, the first

cells or CCs have a corresponding DCI sub-field of

The remaining 2 cells or CCs each have a corresponding DCI sub-field of

According to one embodiment, the wireless communication method further includes configuring a maximum and/or a minimum threshold of the number n.

Additionally, the BS can configure a maximum or a minimum value of the size of the whole DCI bit field, or otherwise the maximum or the minimum values can be defined by the wireless communication service provider beforehand. The BS can also configure a maximum or a minimum value of the size of the sub-fields, or otherwise the maximum and/or minimum values of the size of the sub-fields can be defined by the wireless communication service provided beforehand.

With this arrangement, the size of the sub-fields in DCI can be configured with flexibility, and the overhead of the DCI can be reduced. Additionally, this approach can use the bit field of the DCI more efficiently.

Embodiment 4

transmitting DCI (Downlink Control Information) to a user equipment (UE) to configure frequency domain resource allocation of a plurality of component carriers according to at least one of the following manners:

receiving DCI (Downlink Control Information) from a base station, the DCI configuring frequency domain resource allocation of a plurality of component carriers according to at least one of the following manners:

In this embodiment, this disclosure exemplarily shows how the frequency domain resource allocation can be determined. A BS can transmit DCI to a UE to configure the frequency domain resource of a plurality of CCs scheduled by the BS, such that the UE can understand what frequency domain resource would be used by respective CCs.

According to the first alternative, the BS can configure the frequency domain resource allocation according to a component carrier among the plurality of scheduled component carriers with the largest available frequency domain resource (such as the CC0 in Fig. 2) . For example, when configuring the frequency domain resource of other CCs, the BS can use the CC with the largest available frequency domain resource as a reference. Exemplarily, the BS can use the starting point (e.g., the lowest frequency domain of the frequency domain resource) of the CC with the largest available frequency domain resource as the same starting point of the rest of the scheduled CCs. Exemplarily, the BS can use the end point (e.g., the highest frequency domain of the frequency domain resource) of the CC with the largest available frequency domain resource as the same end point of the rest of the scheduled CCs. Exemplarily, the BS can use the allocated resource of the CC with the largest available frequency domain resource as the basis to scale its allocation and map the scaled allocation to other available resource of the rest of the CCs to determine the allocated resources of the rest of the CCs.

For example, the BS can configure a same starting value for the plurality of scheduled component carriers. As shown in Fig. 2, the four scheduled CCs has a same starting value.

In one implementation, the starting value can be “0. ” Further according to this implementation, the BS does not use one of the scheduled CCs as a reference CC.

Likewise, in Fig. 3, the available frequency domain resources do not start at the same point, but the BS can allocate the designated frequency domain resource for transmission to start at the same point.

Exemplarily, the BS can configure a same end value for the plurality of scheduled CCs, as shown in Figs. 2 or 3, if the frequency resource is available for such arrangement.

As shown in Fig. 4, the BS may configure the frequency domain resource allocation of the plurality of schedule component carriers based on a ratio between available frequency domain resources of the reference component carrier and available frequency domain resources of another component carrier among the plurality of component carriers.

In this example, the reference CC can be the CC with largest available frequency domain resource, which is CC0. In this case, the BS may scale down the allocation of the frequency domain resource of CC0 according to the availability of frequency domain resource of CC0 and the availability of frequency domain resource of another component carrier (such as according to the ratio between the available frequency domain resource of CC0 and another CC) . The BS can use the ratio to map the allocated frequency domain resource of CC0 to the available frequency domain resource of another CC to determine the another CC’s allocated frequency domain resource. The mapping/scaling may include the mapping/scaling of the starting value, the mapping/scaling of the end value, and/or the mapping/scaling of the size of the allocated frequency domain resource.

It should be noted that these alternatives can be use together or separately, if applicable.

Embodiment 5

In according to this embodiment, this disclosure provides wireless transmission methods to determine if a plurality transmission blocks (TBs) are duplicate or if a plurality TBs can be combined.

A wireless transmission method includes:

establishing a plurality of PDSCHs or PUSCHs on a plurality of cells or CCs, each PDSCH or PUSCH may carry one TB; and

providing by the BS or receiving by the UE an indicator, indicating whether the TB is duplicated or a plurality TBs of the plurality of PDSCHs or PUSCHs can be combined.

In this implementation, the BS can provide an indicator having one or more bits, corresponding to the cells or CCs carrying the TBs. The bits of the indicator can be used to indicate whether the corresponding TB carries a duplicate data or the corresponding TBs can be combined.

In one implementation, the indicator can be provided by RRC signaling or by dynamic signaling. The number of the bits of the indicator can be equal to the maximum number of the scheduled cells or CCs.

In one implementation, if a bit corresponding to a cell is “1, ” it indicates the corresponding cell carries independent data in its TB. If a bit corresponding to a cell is “0, ” it indicates the corresponding cell carries duplicate data in its TB.

In one implementation, if a bit corresponding to a cell is “0, ” it indicates the corresponding cell carries independent data in its TB. If a bit corresponding to a cell is “1, ” it indicates the corresponding cell carries duplicate data in its TB.

The duplicate TBs in different CCs or cells can be combined together or can be used to determine the status of the transmission, such as to conduct bit error check or correction.

According to an implementation, a wireless communication method is provided. The wireless communication method includes:

providing (by a BS) or receiving (by a UE) an identical Radio Network Temporary Identifier (RNTI) or a same scrambling ID for the duplicate/identical TBs carried by the PDSCHs or PUSCHs.

In this example, the BS can assign a same RNTI or a same scrambling ID to all the duplicate TBs, which carry the same data. This may reduce the overload of the control signaling.

According to another implementation, another wireless transmission method is provided. The method includes:

obtaining (by a UE or a BS) or providing (by a BS) at least one of the following information:

a number of scheduled cells or CCs, information of cells or CCs carrying duplicate TB (s) , information of cells or CCs carrying non-duplicate (independent) TB (s) , or identification of cells or CCs carrying duplicate or non-duplicate (independent) TB (s) ; and

using the at least one information to determining whether a TB is duplicate to another TB carried by another cell or CC.

According to this implementation, the BS can provide a table including at least one of a number of scheduled cells or CCs, information of cells or CCs carrying duplicate TB (s) , information of cells or CCs carrying non-duplicate (independent) TB (s) , or identification of cells or CCs carrying duplicate or non-duplicate (independent) TB (s) .

The information, such as the table, can be provided by a BS, via high level signaling, such as RRC signaling, or can be predefined between UE and BS. The information can be used to configured the TB or to control the downlink or uplink transmission.

Embodiment 6

According to one embodiment, this disclosure provide wireless method on generating and configuring of DAI (Downlink Assignment Index) , including C-DA I (Counter Downlink Assignment Index) and/or T-DAI (Total Downlink Assignment Index) .

According to one implementation, multiple PDSCHs may be established between a BS and a UE. Each PDSCH may carrier one TB for data transmission. The TBs between the plurality of PDSCHs may be the same, different, or partially different and partially identical.

According to one implementing, when the TBs on the plurality of PDSCHs are the same or partially the same, the DAI count is counted once for the duplicate/same TB.

According to one implementing, when the TBs on the plurality of PDSCHs are the same or partially the same, the UE may only generate one bit of code in a dynamic code book for the duplicate/same TB..

According to another implementation, when the plurality of PDSCHs belong to a same cell group, the DAI count is counted once for the plurality of PDSCHs.

According to another implementation, when the plurality of PDSCHs belong to a same cell group, the UE may only generate one bit of code in a dynamic code book for the duplicate/same TB.

According to another implementation, when the plurality of PDSCHs belong to a same cell group, a plurality of bits of dynamic code in a dynamic code book are generated, and each bit corresponds to one PDSCH.

According to another implementation, the bits of code above can be used to perform logic ‘OR’ calculation. When at least one value of the value of each bit is ‘1’ , the result of the logic calculation is ‘1’ . When all of the value of each bit is ‘0’ , the result of the logic calculation is ‘0’ .

It should be noted that the techniques disclose above, such as in embodiments 1-6, can be combined together.

The Platform

According to one embodiment, this disclosure provides a wireless communication apparatus, including:

at least one memory, storing at least one program; and

one or more processors, in communication with the at least one memory and configured to executed the at least one program to cause the wireless communication apparatus to perform any method or step disclosed herein.

According to one embodiment, this disclosure provides a non-transitory computer-readable storage medium, storing at least one program, the at least on program, when executed by one or more processors, causing a wireless communication apparatus to perform any method or step disclosed herein.

Fig. 5 shows a wireless communication apparatus according to an embodiment of this disclosure. This structure may be used as a UE or a BS or other wireless communication system to perform the methods of this disclosure. The wireless communication apparatus includes one or more processors and one or more sets of memory. The memory stores one or more non-transitory computer readable medium programs. The one or more processors can execute the non-transitory computer-readable medium program to perform the method for wireless communication illustrated above. Exemplarily, the wireless communication apparatus may comprise transmitter and receiver to transmit or to receive signals. The wireless communication apparatus may also include user input/output interface to accept user commands. The method of this disclosure can be performed by a communication system with a group of devices, where the group of the devices can be considered as a whole as a wireless communication apparatus.

Further, at least one program may be stored in the memory, which can be transported by a computer program product. The computer program product includes a non-transitory computer-readable program medium code stored thereupon. The code, when executed by at least one processor, causes at least one processor to implement the method for wireless communication program illustrated above.

Some of the embodiments described herein are described in the general context of methods or processes, which may be implemented in some embodiments by a computer program product, embodied in a computer-readable medium, including computer-executable instructions, such as program code, executed by computers in networked environments. A computer-readable medium may include volatile and non-volatile storage devices including, but not limited to, digital versatile discs (DVD) , compact discs (CDs) , Read Only Memory (ROM) , Random Access Memory (RAM) , etc. Therefore, the computer-readable media can include a non-transitory storage media. Generally, program modules may include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. Computer-or processor-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures represents examples of corresponding acts for implementing the functions described in such steps or processes.

Some of the disclosed embodiments can be implemented as devices or modules using hardware circuits, software, or combinations thereof. For example, a hardware circuit implementation can include discrete analog and/or digital components that are, for example, integrated as part of a printed circuit board. Alternatively, or additionally, the disclosed components or modules can be implemented as a Field Programmable Gate Array (FPGA) and/or as an Application Specific Integrated Circuit (ASIC) device. Some implementations may additionally or alternatively include a digital signal processor (DSP) that is a specialized microprocessor with an architecture optimized for the operational needs of digital signal processing associated with the disclosed functionalities of this application. Similarly, the various components or sub-components within each module may be implemented in software, hardware or firmware. The connectivity between the modules and/or components within the modules may be provided using any one of the connectivity methods and media that is known in the art, including, but not limited to, communications over the Internet, wired, or wireless networks using the appropriate protocols.

While this document contains many specifics, these should not be construed as limitations on the scope of an invention that is claimed or of what may be claimed, but rather as descriptions of features specific to particular embodiments. Certain features that are described in this document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable sub-combination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a sub-combination or a variation of a sub-combination. Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results.

Only a few implementations and examples are described and other implementations, enhancements and variations can be made based on what is described and illustrated in this disclosure.

Claims

A wireless communication method, performed by a user equipment, the method comprising:

receiving DCI (Downlink Control Information) , wherein the DCI includes at least one sub-field;

determining whether at least one sub-field is used to control more than one component carriers; and

transmitting data by a plurality of PUSCHs or receiving data by a plurality of PDSCHs on based on whether the at least one sub-field is used to control more than one component carriers.
The method of claim 1, wherein transmission blocks carried by the plurality of PDSCHs or the plurality of PUSCHs are different or identical or partially different and partially identical.
The method of claim 1, wherein the DCI includes n sub-fields, n being an integer not less than 1.
The method of claim 3, wherein determining whether the at least one sub-field is used to control more than one component carriers comprises determining whether an m number of component carriers scheduled by a base station is larger than n, m being an integer larger than 0.
The method of claim 3, wherein determining whether the at least one sub-field is used to control more than one component carriers comprises determining that (m-n) component carriers of m component carriers share one or more of the n sub-fields when m is larger than n, m being an integer larger than 0.
The method of claim 5, further comprising determining that first (m-n) or last (m-n) component carriers of the m component carriers share the one or more of the n sub-fields.
The method of claim 6, wherein indexes of the m component carriers are stored in a low to high or a high to low sequence.
The method of claim 3, wherein the n sub-fields are divided from one DCI bit field of the DCI.
The method of claim 3, wherein determining whether the at least one sub-field is used to control more than one component carriers comprises determining (p-q) component carriers share the one or more of the n sub-fields when a p number of scheduled component carriers is larger than a threshold q, p and q being integers not less than 1.
The method of claim 1, further comprises determining that a bit filed of the DCI is divided into q sub-fields when a p number of scheduled component carriers is larger than a threshold q, p and q being integers not less than 1.
The method of claim 1, further comprising determining that a bit field of the DCI is divided into p sub-fields wherein p is a number of scheduled component carriers, p being integers not less than 1.
The method of any one of claims 9 to 10, further comprising receiving the threshold q from a base station.
The method of claim 3, wherein determining whether the at least one sub-field is used to control more than one component carriers comprises determining whether a DCI size is larger than a DCI size threshold.
The method of claim 13, further comprising receiving information associated with the DCI size threshold from a base station.
The method of claim 3, wherein determining whether the at least one sub-field is used to control more than one component carriers comprises determining that one or more scheduled component carriers with highest indexes or lowest indexes share the at least one of the n sub-fields with at least one of another scheduled component carrier.
A wireless communication method, performed by a base station, the method comprising:

transmitting DCI (Downlink Control Information) , wherein the DCI includes at least one sub-field, to trigger a user equipment (UE) to determine whether the at least one sub-field is used to control more than one component carriers; and

transmitting data by a plurality of PUSCHs or receiving data by a plurality of PDSCHs on based on whether the at least one sub-field is used to control more than one component carriers.
The method of claim 16, wherein transmission blocks carried by the plurality of PDSCHs or the plurality of PUSCHs are different or identical or partially different and partially identical.
The method of claim 16, wherein the DCI includes n sub-fields, n being an integer not less than 1.
The method of claim 18, wherein determining whether the at least one sub-field is used to control more than one component carriers comprises determining whether an m number of component carriers scheduled by the base station is larger than n, m being an integer larger than 0.
The method of claim 18, wherein determining whether the at least one sub-field is used to control more than one component carriers comprises determining that (m-n) component carriers of m component carriers share one or more of the n sub-fields when m is larger than n, m being an integer larger than 0.
The method of claim 20, further comprising determining that first (m-n) or last (m-n) component carriers of the m component carriers share the one or more of the n sub-fields.
The method of claim 21, wherein indexes of the m component carriers are stored in a low to high or a high to low sequence.
The method of claim 18, wherein the n sub-fields are divided from one DCI bit field of the DCI.
The method of claim 18, wherein determining whether the at least one sub-field is used to control more than one component carriers comprises determining (p-q) component carriers share the one or more of the n sub- fields when a p number of scheduled component carriers is larger than a threshold q, p and q being integers not less than 1.
The method of claim 16, wherein a bit filed of the DCI is divided into q sub-fields when a p number of scheduled component carriers is larger than a threshold q, p and q being integers not less than 1.
The method of claim 18, a bit field of the DCI is divided into p sub-fields wherein p is a number of scheduled component carriers, p being integers not less than 1.
The method of any one of claims 24 to 25, further comprising transmitting the threshold q to the UE.
The method of claim 16, wherein determining whether the at least one sub-field is used to control more than one component carriers comprises determining whether a DCI size is larger than a DCI size threshold.
The method of claim 28, further comprising transmitting information associated with the DCI size threshold to the UE.
The method of claim 18, determining whether the at least one sub-field is used to control more than one component carriers comprises determining that one or more scheduled component carriers with highest indexes or lowest indexes share the at least one of the n sub-fields with at least one of another scheduled component carrier.
A wireless communication method, performed by a base station, the method comprising:

determining a size of at least one sub-field of DCI according to a whole bit size n of the DCI and a number m of scheduled component carriers; and

transmitting the DCI to a user equipment (UE) to control one or more PDSCHs or PUSCHs.
The method of claim 31, wherein determining the size of the at least one sub-field of the DCI comprises determining that the size of the at least one sub-field of the DCI is (n/m) .
The method of claim 31, wherein determining the size of at least one sub-field of the DCI comprises determine that the size of the first
component carriers as
wherein
represents rounding down to a closest integer of n divided by m.
The method of claim 33, wherein determining the size of the at least one sub-field of the DCI comprises determining that the size of the rest of
component carriers as
wherein

represents rounding up to a closest integer of n divided by m.
The method of any one of claims 32 to 34, further comprising configuring a maximum and/or a minimum threshold of the number n.
A wireless communication method, performed by a user equipment (UE) , the method comprising:

receiving DCI (Downlink Control Information) , wherein a size of at least one sub-field of the DCI is determined according to a whole bit size n of the DCI and a number m of scheduled component carriers; and

transmitting data by a plurality of PUSCHs or receiving data by a plurality of PDSCHs according to the DCI.
The method of claim 36, wherein the size of the at least one sub-field of the DCI is (n/m) .
The method of claim 36, wherein the size of the first
component carriers is
wherein
represents rounding down to a closest integer of n divided by m.
The method of claim 38, wherein the size of the rest of
component carriers is
wherein
represents rounding up to a closest integer of n divided by m.
The method of any one of claims 37 to 39, further comprising receiving an indicator of a maximum and/or a minimum threshold of the number n.
A wireless communication method, performed by a base station, the method comprising:

transmitting DCI (Downlink Control Information) to a user equipment (UE) to configure frequency domain resource allocation of a plurality of scheduled component carriers according to at least one of the following manners:

configuring the frequency domain resource allocation according to a component carrier among the plurality of scheduled component carriers with the largest available frequency domain resource; or

configuring a same starting value for the plurality of scheduled component carriers; or

configuring a starting value with “0” for the plurality of scheduled component carriers, wherein the plurality of scheduled component carriers does not include a reference component carrier; or

configuring the frequency domain resource allocation of the plurality of schedule component carriers based on a ratio between available frequency domain resources of the reference component carrier and available frequency domain resources of another component carrier among the plurality of component carriers; and

transmitting or receiving data based on configuration of the frequency domain resource allocation.
A wireless communication method, performed by a user equipment, the method comprising:

receiving DCI (Downlink Control Information) from a base station, the DCI configuring frequency domain resource allocation of a plurality of scheduled component carriers according to at least one of the following manners:

configuring the frequency domain resource allocation according to a component carrier among the plurality of scheduled component carriers with the largest available frequency domain resource; or

configuring a same starting value for the plurality of scheduled component carriers; or

configuring a starting value with “0” for the plurality of scheduled component carriers, wherein the plurality of scheduled component carriers does not include a reference component carrier; or

configuring the frequency domain resource allocation of the plurality of schedule component carriers based on a ratio between available frequency domain resources of the reference component carrier and available frequency domain resources of another component carrier among the plurality of component carriers; and

transmitting or receiving data based on configuration of the frequency domain resource allocation.
A wireless communication apparatus, comprising:

at least one memory, storing at least one program; and

one or more processors, in communication with the at least one memory and configured to executed the at least one program to cause the wireless communication apparatus to perform the method of any one of claims 1 to 42.
A non-transitory computer-readable storage medium, storing at least one program, the at least on program, when executed by one or more processors, causing a wireless communication apparatus to perform the method of any one of claims 1 to 42.