First communication device representing a user equipment and a communication method performed thereby

Abstract

A first communication apparatus representing a user equipment and a communication method performed thereby are provided. The first communication apparatus comprises circuitry configured to measure one or more channel busy ratios of one or more resource pools, and a transmitter configured to transmit a radio signal to a second communication apparatus by adjusting radio parameters based on the one or more channel busy ratios at least of a power and a number of transmissions of a transport block, wherein the one or more channel busy ratios comprise one or more channel busy ratios related to a data channel and one or more channel busy ratios related to a control channel.

Description

[0001] This application is a divisional application of the patent application with application number: 201680088104.X, title of invention: "Wireless communication method, apparatus and system", and filing date of 11-August-2016. TECHNICAL FIELD

[0002] The present technology relates to the field of wireless communication, and more specifically, to a wireless communication method, apparatus and system. BACKGROUND

[0003] Congestion control functionality is a mandatory requirement for devices operating in the 5.9GHz Intelligent Transport Systems (ITS) band in Europe, and is also being discussed for regulation by the Third Generation Partnership Project (3GPP), especially based on Vehicle-to-Vehicle (V2V). SUMMARY

[0004] One non-limiting and exemplary embodiment provides a wireless communication method, apparatus and system for congestion control.

[0005] In one general aspect, a first communication apparatus representing a user equipment is provided, the first communication apparatus comprising: circuitry configured to measure one or more channel busy ratios of one or more resource pools, and a transmitter configured to transmit a radio signal to a second communication apparatus by adjusting radio parameters of transmission of a transmission block at least in terms of power and number of transmissions based on the one or more channel busy ratios, wherein the one or more channel busy ratios comprise one or more channel busy ratios related to data channels and one or more channel busy ratios related to control channels.

[0006] In one general aspect, a communication method performed by a first communication apparatus representing a user equipment is provided, comprising: measuring one or more channel busy ratios of one or more resource pools, and transmitting a radio signal to a second communication apparatus by adjusting radio parameters of transmission of a transmission block at least in terms of power and number of transmissions based on the one or more channel busy ratios, wherein the one or more channel busy ratios comprise one or more channel busy ratios related to data channels and one or more channel busy ratios related to control channels.

[0007] In one general aspect, a first node is provided, comprising: a transceiver configured to transmit and / or receive a radio signal; circuitry configured to measure one or more channel busy ratios of a channel resource pool of the radio signal, and to perform congestion control on the channel resource pool based on the measured channel busy ratios.

[0008] In another general aspect, a method of transmitting and / or receiving a radio signal at a first node is provided, the method comprising measuring one or more channel busy ratios of a channel resource pool of the radio signal, and performing congestion control on the channel resource pool based on the measured channel busy ratios.

[0009] In another general aspect, a system at a first node is provided, comprising a processor, a memory coupled with the processor, and when executed by the processor, performing a method comprising measuring one or more channel busy ratios of a channel resource pool of the radio signal, and performing congestion control on the channel resource pool based on the measured channel busy ratios.

[0010] It should be noted that general or specific embodiment(s) can be implemented as a system, a method, an integrated circuit, a computer program, a storage medium or any selective combination thereof.

[0011] Additional benefits and advantages of the disclosed embodiments will become apparent to those of ordinary skill in the art upon reading and understanding the following detailed description and accompanying drawings. Benefits and / or advantages can be obtained by one or more of the various embodiments and features described herein without necessarily achieving all of them. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 An example of a wireless communication scenario including a user equipment (UE) and a base station (e.g., eNodeB (eNB)) is schematically illustrated.

[0013] Figure 2 A block diagram schematically illustrating a wireless communication device according to embodiments of the disclosure is schematically illustrated.

[0014] Figure 3A A number of subframes and a resource pool of a radio signal in a subframe are schematically illustrated.

[0015] Figure 3B An example for illustrating a measurement operation of a wireless communication device according to embodiments of the disclosure is schematically illustrated.

[0016] Figure 4 An example for illustrating another measurement operation of a wireless communication device according to another embodiment of the disclosure is schematically illustrated.

[0017] Figure 5 An example for illustrating another measurement operation of a wireless communication device according to another embodiment of the disclosure is schematically illustrated.

[0018] Figure 6 An example for illustrating another measurement operation of a wireless communication device according to another embodiment of the disclosure is schematically illustrated.

[0019] Figures 7A-7D Different congestion control actions are schematically illustrated for different congestion situations.

[0020] Figure 8 An example is schematically illustrated for illustrating a reporting operation of a wireless communication device according to an embodiment of the present disclosure.

[0021] Figure 9A A flowchart of a wireless communication method according to an embodiment of the present disclosure is schematically illustrated.

[0022] Figure 9B A flowchart of a wireless communication method according to another embodiment of the present disclosure is schematically illustrated.

[0023] Figure 9C A flowchart of a wireless communication method according to another embodiment of the present disclosure is schematically illustrated.

[0024] Figure 10 A block diagram of a wireless communication system according to an embodiment of the present disclosure is schematically illustrated. DETAILED DESCRIPTION

[0025] Reference will now be made to FIGS. 3 to 8 Figure 6 Embodiments are described. It is to be understood that the technology can be implemented in many different forms and in many different orders of operations, and should not be understood to be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the technology to those skilled in the art. Indeed, the technology is intended to cover alternatives, modifications and equivalents of these embodiments, which are included within the scope and spirit of the technology as defined by the appended claims. Furthermore, in the detailed description of the technology, numerous specific details are set forth in order to provide a thorough understanding of the technology. However, it will be clear to those of ordinary skill in the art that the technology can be practiced without these specific details.

[0026] While the order of the steps of the methods and the structure of the components are provided herein for exemplary purposes, they are not limiting. The foregoing detailed description of the technology has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the technology to the precise form disclosed. Numerous modifications and variations are possible in light of the above teachings. The described embodiments were chosen in order to best illustrate the principles of the technology and its practical application to thereby enable others skilled in the art to best utilize the technology in various embodiments and with various modifications as are suited to the particular

[0027] Figure 1 An example of a wireless communication scenario including a user equipment (UE) and a base station, such as an eNodeB (eNB), is schematically illustrated.

[0028] In a wireless communication scenario, when two user equipment (UE) terminals (e.g., mobile communication devices) of a wireless communication network communicate with each other, their data paths typically go through the operator network. The data path through the network can include a base station (such as an eNB) and / or a gateway. If the devices are in close proximity to each other, their data paths can be routed locally through a local base station. The data path from a UE to an eNB is commonly referred to as the uplink channel or uplink (or simply UL), and the data path from an eNB to a UE is commonly referred to as the downlink channel or downlink (or simply DL).

[0029] Two UE terminals in close proximity to each other can also establish a direct link or communication without going through a base station (such as an eNB). A telecommunication system can use device-to-device (“D2D”) communication or vehicle-to-vehicle (“V2V”), in which two or more UE terminals communicate directly with each other. In D2D or V2V communication, voice and / or data traffic (referred to herein as “user traffic or user data”) from one UE terminal to one or more other UE terminals can be transferred without passing through a base station or other network control device of the telecommunication system. D2D or V2V communication has also recently been referred to as “sidelink direct communication” or even “sidelink” communication, and is therefore sometimes abbreviated as “SLD” or “SL”. Thus, D2D or V2V, sidelink direct, sidelink, or sidelink channel are used interchangeably herein, but all have the same meaning.

[0030] Currently, in order to allocate and manage radio resources for performing wireless communication, solutions for allocating and recovering radio resources in a physical uplink control channel (PUCCH) are provided in the prior art. Taking the allocation of scheduling request (SR) resources in a PUCCH as an example, the solution is as follows: a radio resource manager of a base station generates a resource pool; when a UE accesses the network, the radio resource manager searches the resource pool to allocate unused resources to the UE when looking for resources, and sets the resources to be in a used state; and when the UE releases the resources, the radio resource manager sets the resources to be in an unused state.

[0031] However, because the above-mentioned solution for allocating resources stores used resources and unused resources in a mixed manner in the above-mentioned solution for allocating resources, and does not distinguish between different resource types, congestion control is performed with respect to all resources as a whole, and therefore, an improved solution for better resource allocation and congestion control is needed.

[0032] Figure 2 A block diagram of a wireless communication apparatus 200 according to embodiments of the present disclosure is schematically shown.

[0033] The wireless communication device 200 at the first node according to the embodiments of the present disclosure comprises a transceiver 201 that transmits and / or receives a radio signal; a circuit 202 that measures one or more channel busy ratios (CBRs) of a channel resource pool of the radio signal, and performs congestion control on the channel resource pool based on the measured one or more channel busy ratios.

[0034] The CBR proposed herein generally represents how many resources are occupied to reflect the congestion situation in wireless communication, and it can be observed at both the UE side and the eNB side. By measuring the CBR, the UE or the eNB can take relevant actions for congestion control based on the degree of the CBR. Therefore, the CBR measurement is the basis for congestion control.

[0035] This embodiment can measure the CBR of the entire bandwidth including all D2D or V2V resource pools. Then relevant actions can be taken based on the CBR measurement. Therefore, the congestion situation can be controlled and balanced.

[0036] In addition, in order to distinguish the transmission mode 1 and the transmission mode 2 defined in 3GPP, or the scheduling assignment (SA) and data, so as to take fine actions, and to know whether the SA resource (or generally, the control channel resource) pool or the data resource (or generally, the data channel resource) pool is congested, in the embodiments, the circuit 202 can measure the channel busy ratios of different types of channel resource pools of the radio signal respectively, and perform congestion control on different types of channel resource pools based on the measured channel busy ratios.

[0037] Therefore, in order to obtain improved congestion control results, by the solution according to the embodiments of the present disclosure, the circuit 202 can measure the CBRs of different types of channel resource pools of the radio signal respectively, and perform congestion control on different types of channel resource pools based on the measured channel busy ratios. Therefore, each CBR can be measured separately for each type of channel resource pool, and the congestion situation of each type of channel resource pool can be clearly known, and the differentiated and unique congestion control can be performed specifically with respect to the type of channel resource pool. Therefore, such congestion control can be more accurate and efficient.

[0038] In this case, first, the average congestion of the entire bandwidth cannot tell the details about different types of resource pools, and the congestion of a specific resource pool can be improved separately. Second, the congestion situation can be observed for each type of resource pool, and relevant actions can be taken for each type of resource pool. Third, the power for measuring all resource pools each time can be saved.

[0039] In an embodiment, the CBR can be measured by calculating the ratio of the number of occupied resources to the total number of resources. The number of occupied resources represents the number of computing units with radio signals having power greater than a threshold, and the total number of resources indicates the total number of computing units with radio signals.

[0040] As an example rather than a limitation, CBR can be measured using the following formula (1).

[0041] CBR = Occupied Quantity / Total Quantity... Formula (1)

[0042] The occupied quantity indicates the number of computing units with radio signals having power greater than the threshold as described above, and the total quantity indicates the total number of computing units with radio signals as described above.

[0043] In an embodiment, the unit for calculating radio signals may include one or more physical resource blocks (PRBs) or one or more resource block groups (RBGs) or other units for calculating power, and the power may include radio signal power intensity or power spectral density or other measures for assessing power level or usage.

[0044] In an embodiment, different types of channel resource pools for radio signals may include a control channel resource pool and a data channel resource pool, and the circuit may measure a first channel busy ratio of the control channel resource pool and a second channel busy ratio of the data channel resource pool.

[0045] Figure 3A The diagram schematically illustrates several subframes and the resource pool of radio signals within those subframes.

[0046] The 3GPP specification defines the concept of a resource pool, which includes time / frequency resources for transmitting channels of the same type. Currently, the 3GPP Rel.12 / 13 specification defines SA data resource pools and data resource pools. To extend its use to V2V, data resource pools and SA resource pools can also be defined in V2V implementations. Since SA and data can be transmitted in the same subframe based on the V2V protocol in 3GPP RAN1, SA resource pools and data resource pools can also be configured in the same subframe, such as... Figure 3A As shown. UEs in both transmission mode 1 and mode 2 will have the same use of the resources.

[0047] In an embodiment, the control channel resource pool may be a resource pool that includes resources for transmitting or receiving control channels (carrying control radio signaling) and can be used to transmit SA or sidelink control channels (PSCCH). The data channel resource pool may be a resource pool that includes resources for transmitting or receiving user services or user data (or user load), and from the perspective of 3GPP physical protocols, can also be exemplified as the Physical Sidelink Shared Channel (PSSCH).

[0048] Figure 3B An example illustrating such a measurement operation of a wireless communication device according to an embodiment of this disclosure is shown schematically.

[0049] like Figure 3B As shown, different types of channel resource pools for radio signals can include an SA channel resource pool (shown as SA in the accompanying figure) and a data channel resource pool (shown as data in the accompanying figure). Figure 2 The circuit 202 shown can measure the first channel busy ratio (CBR1) of the SA channel resource pool and the second channel busy ratio (CBR2) of the data channel resource pool, respectively and independently.

[0050] Therefore, each CBR can be measured separately for each type of channel resource pool, and distinct congestion control can be performed specifically for that type of channel resource pool. Thus, this congestion control can be more precise and efficient.

[0051] In an embodiment, the first node can operate in one of different transmission modes, and the circuit can measure the channel busy ratio of different types of channel resource pools of radio signals with respect to the different transmission modes.

[0052] In this embodiment, different transmission modes may include a first transmission mode (e.g., mode 1 as defined in 3GPP, where transmission is based on base station scheduling) and a second transmission mode (e.g., mode 2 as defined in 3GPP, i.e., user equipment autonomous resource allocation mode). Although two transmission modes are illustrated herein, the number of transmission modes is not limited to two, but may be other numbers.

[0053] In this case Figure 4 An example illustrating another measurement operation of a wireless communication device according to another embodiment of this disclosure is shown schematically.

[0054] like Figure 4As shown, the circuit can measure the CBR of different types of channel resource pools for radio signals for different transmission modes. For example, it measures CBR1 for the SA resource pool in mode 1 resources, CBR2 for the data resource pool in mode 1 resources, CBR3 for the SA resource pool in mode 2 resources, and CBR4 for the data resource pool in mode 2 resources.

[0055] Therefore, each CBR can be measured individually for each type of channel resource pool under different transmission modes, and distinct congestion control can be performed specifically for that type of channel resource pool under that transmission mode. Thus, this congestion control can be more precise and efficient.

[0056] Figure 5 An example illustrating another measurement operation of a wireless communication device according to another embodiment of this disclosure is shown schematically.

[0057] In this embodiment, it is assumed that different transmission modes include a first transmission mode (e.g., mode 1 defined in 3GPP, where transmission is based on base station scheduling) and a second transmission mode (e.g., mode 2 defined in 3GPP, i.e., user equipment autonomous resource allocation mode).

[0058] When the first node operates in a first transmission mode (e.g., mode 1), circuit 202 can measure a first channel busy ratio CBR1 for the control channel resource pool for the first transmission mode and a second channel busy ratio CBR2 for the data channel resource pool for the first transmission mode (mode 1).

[0059] Therefore, the UE in mode 1 only measures the CBR in mode 1, which includes the CBR of the control channel resource pool and the CBR of the data channel resource pool, and does not measure the CBR of the control channel resource pool and the data channel resource pool in mode 2, so as to save power and increase efficiency while maintaining accurate CBR measurement and congestion control.

[0060] On the other hand, when the first node operates in the second transmission mode (e.g., mode 2), the circuit 202 can measure the third channel busy ratio CBR3 for the control channel resource pool for the second transmission mode, and measure the fourth channel busy ratio CBR4 for the data channel resource pool for the second transmission mode (mode 2).

[0061] Therefore, the UE in mode 2 only measures the CBR in mode 2, which includes the CBR for the control channel resource pool and the CBR for the data channel resource pool, but does not measure the CBR for the control channel resource pool and the data channel resource pool in mode 1, so as to save power and increase efficiency while maintaining accurate CBR measurement and congestion control.

[0062] Figure 6 An example illustrating another measurement operation of a wireless communication device according to another embodiment of this disclosure is shown schematically.

[0063] In an embodiment, where the radio signal is multiple carriers in the frequency domain, circuit 202 can measure the channel busy ratio for different types of channel resource pools for each carrier.

[0064] like Figure 6 As shown, assume the radio signal is formed by carrier component 1 (CC1), carrier component 2 (CC2), and carrier component 3 (CC3). Circuit 202 can measure CBR1, CBR2, and CBR3 respectively. CBR1 includes CBR with respect to carrier CC1, CBR with respect to the control channel resource pool, and CBR with respect to the data channel resource pool. CBR2 includes CBR with respect to carrier CC2, CBR with respect to the control channel resource pool, and CBR with respect to the data channel resource pool. CBR3 includes CBR with respect to carrier CC3, CBR with respect to the control channel resource pool, and CBR with respect to the data channel resource pool.

[0065] The above method of measuring CBR per CC can provide more accurate CBR measurement and congestion control, and can also save power consumption.

[0066] After measuring the congestion level (CBR), the measured CBR can be compared with a predetermined threshold to determine the congestion status. The predetermined threshold can be specified, pre-configured, or configured by the RRC.

[0067] If one or more of the channel busy ratios exceed a predetermined threshold, circuit 202 may instruct transceiver 201 not to transmit radio signals in unoccupied resources in one or more different types of channel resource pools corresponding to the one or more of the channel busy ratios. In this document, the one or more different types of channel resource pools corresponding to the one or more of the channel busy ratios refer to channel resource pools whose channel busy ratios exceed the predetermined thresholds, and are also referred to as congested channel resource pools.

[0068] Such actions of not transmitting radio signals in unoccupied resources include one or more of the following: transmitting radio signals in occupied resources for data with a lower priority than the radio signal to be transmitted; transmitting radio signals in occupied resources by discarding data occupying the occupied resources; transmitting radio signals by adjusting the radio parameters used for the radio signals; and delaying the transmission of radio signals for a predetermined time, as well as other actions to avoid occupying occupied resources in the congestion resource pool. In an embodiment, the radio parameters used for the radio signals may include one or more of the power and number of transmit blocks, or other parameters. In this case, the priority of the radio signals may be specified or configured by the RRC.

[0069] If one or more of the channel busy ratios do not exceed a predetermined threshold, circuit 202 may instruct the transceiver to transmit radio signals in unoccupied resources in one or more different types of channel resource pools corresponding to the one or more of the channel busy ratios.

[0070] It should be noted that in specific examples (Mode 1 and Mode 2 as defined in 3GPP), and when the first node is the UE, since the eNB is responsible for scheduling and congestion control when the UE is in Mode 1, after the UE measures the CBR for Mode 1 and reports the measurement to the eNB, the eNB instructs the UE (including circuitry 202 at the UE) (to instruct the transceiver) not to transmit radio signals in unoccupied resources or to transmit radio signals in unoccupied resources. On the other hand, when the UE is in Mode 2, the UE itself can be responsible for scheduling and congestion control; therefore, after measuring the CBR for Mode 2, the UE (including circuitry 202 at the UE) can instruct the transceiver not to transmit radio signals in unoccupied resources or to transmit radio signals in unoccupied resources.

[0071] However, there are no restrictions on who is responsible for scheduling and congestion control, or who will send instructions. In some embodiments, as long as different transmission modes exist and the CBR is measured separately for each transmission mode, specific congestion control can be performed on the first node to achieve effects such as power saving and precise congestion control, regardless of who is responsible for scheduling and congestion control.

[0072] Figures 7A-7D This schematically illustrates different congestion control actions for different congestion situations.

[0073] Different congestion levels can be defined based on the congestion levels of the control channel resource pool and the data channel resource pool.

[0074] like Figures 7A-7DAs shown, the term "congestion" indicates that the channel busy ratio exceeds (i.e., is greater than or equal to) a predetermined threshold, and the term "non-congestion" indicates that the channel busy ratio does not exceed (i.e., is less than) a predetermined threshold.

[0075] exist Figure 7A In this scenario, based on CBR measurements, the SA resource pool is not congested, while the data resource pool is congested. Using the direct solution described above (where CBR is measured across the entire bandwidth, rather than separately for each CBR of each type of resource pool), the CBR level can be low, thus allowing data to be transmitted from unoccupied resources in the data resource pool. However, this behavior will lead to more severe congestion for data transmission, especially when the data channel resource pool is already congested.

[0076] Based on the proposal of this disclosure embodiment, which separately measures the CBR for the SA and the CBR for the data, it is clear that the SA resource pool is not congested, and the data resource pool is congested, although not congested in the overall congestion situation for the entire bandwidth. Therefore, different actions can be taken for the SA resource pool and the data resource pool in the following ways:

[0077] 1. For the data channel resource pool, lower priority packets are preempted for data transmission within the already occupied resources of the data channel resource pool because the data's CBR is high and the data channel resource pool is congested. There is no need to further transmit these packets in unoccupied resources; and

[0078] 2. For the SA channel resource pool, data can be sent from the unoccupied resources in the SA channel resource pool because the CBR of SA is very low and the SA channel resource pool is not congested.

[0079] By doing so, the utilization of the SA resource pool is improved without worsening the congestion situation of the data resource pool. The utilization of each resource pool can be optimized to achieve improved congestion control across the entire resource pool.

[0080] In this example, preemption means sending a radio signal in an occupied resource that has a lower priority than the radio signal to be sent (as mentioned in congestion control). Other possibilities are also possible, including, for example: sending a radio signal in an occupied resource by discarding data occupying the occupied resource; sending a radio signal by adjusting the radio parameters used for the radio signal; and delaying the transmission of the radio signal by a predetermined time, and others.

[0081] exist Figure 7B In the data pool, based on CBR measurements, the SA resource pool is congested, while the data resource pool is not.

[0082] Based on the proposal of this disclosure embodiment, which separately measures the CBR for the SA and the CBR for the data, it is clear that the SA resource pool is congested, and the data resource pool is not congested, although not congested in the overall congestion situation of the entire bandwidth. Therefore, different actions can be taken for the SA resource pool and the data resource pool in the following ways:

[0083] 1. For the SA channel resource pool, lower priority packets are preempted for data transmission within the already occupied resources of the SA channel resource pool because the CBR of SA is high and the SA channel resource pool is congested. There is no need to further transmit these packets in unoccupied resources; and

[0084] 2. For the data channel resource pool, data can be sent from the unoccupied resources in the data channel resource pool because the data CBR is very low and the data channel resource pool is not congested.

[0085] By doing so, the utilization of the data resource pool is improved, and the congestion situation of the SA resource pool does not worsen. The utilization of each resource pool can be optimized to achieve improved congestion control for each resource pool across the entire system.

[0086] exist Figure 7C In the meantime, based on CBR measurements, the SA resource pool is congested, and the data resource pool is also congested.

[0087] Based on the proposal of this disclosure embodiment, which separately measures the CBR for the SA and the CBR for the data, it is clear that the SA resource pool is congested and the data resource pool is also congested. Therefore, actions can be taken on the SA resource pool and the data resource pool in the following manner:

[0088] For both the SA channel resource pool and the data channel resource pool, lower priority groups are preemptively grouped to be used for data transmission within the already occupied resources of both the SA channel resource pool and the data channel resource pool, since the CBR of both SA and data is high.

[0089] By doing so, the congestion situation in the SA resource pool and the data resource pool did not worsen.

[0090] exist Figure 7D In the meantime, based on CBR measurements, the SA resource pool is not congested, and the data resource pool is not congested.

[0091] Based on the proposal of this disclosure embodiment, which separately measures the CBR for the SA and the CBR for the data, it is clear that the SA resource pool is not congested, and the data resource pool is not congested. Therefore, actions can be taken on the SA resource pool and the data resource pool in the following manner:

[0092] For both the SA channel resource pool and the data channel resource pool, data can be transmitted from the unoccupied resources in both the SA channel resource pool and the data channel resource pool, because the CBR of both SA and data is low.

[0093] By doing so, the utilization rates of both the data resource pool and the SA resource pool are improved.

[0094] Figure 8 An example illustrating the reporting operation of a wireless communication device according to an embodiment of this disclosure is shown schematically.

[0095] CBR can be measured on the eNB side, and the UE does not report it. However, the eNB side cannot know the interference situation at the UE, so the CBR value observed on the eNB side may be too conservative. This is because if there is no interference or little interference between them due to large distances, some occupied resources can still be used for other UEs.

[0096] Therefore, as proposed in this embodiment, the transceiver 201 at the first node can report the measured channel busy ratio to the second node, where the first node can be a user equipment (UE) and the second node can be an eNB. That is, the UE side measures the CBR and reports it to the eNB side.

[0097] like Figure 8 As shown, based on eNB observations, since one resource is allocated to UE1 and another to UE2, the CBR is 50%. However, on the UE side, because UE1's transmission does not interfere with UE2, the relevant resources (such as the resource in the upper left corner shown) can still be used for UE2's transmission. Therefore, UE2's observed CBR is 25%, which is lower than the eNB's observation. In this case, the UE-side observation is more accurate.

[0098] The benefit of the UE reporting the CBR to the eNB is that, because the UE can observe the CBR more accurately, congestion control for each type of channel source pool can be more precise and efficient.

[0099] In an embodiment, the transceiver 201 on the UE side may report the measured channel busy ratio (CBR) to the eNB in ​​response to one of the following conditions: a predetermined period of time has elapsed (i.e., periodically); at least one of the measured channel busy ratios exceeds a predetermined threshold; or the report is triggered by the base station (i.e., the eNB).

[0100] Then, detailed congestion control can be performed on the eNB side, such as, but not limited to:

[0101] 1. eNB can adjust the SA resource pool or data resource pool based on the CBR of the SA report and the CBR of the data, respectively.

[0102] 2. The eNB can adjust congestion by scheduling (e.g., not scheduling certain lower priority packets for a particular UE).

[0103] Compared to congestion control that relies entirely on the eNB implementation, the benefit of eNB performing detailed congestion control is that the eNB has a better understanding of the congestion situation for the entire UE. This can improve spectrum efficiency.

[0104] Therefore, through the embodiments of this disclosure, each CBR can be measured individually for each type of channel resource pool, and the congestion situation for each type of channel resource pool can be clearly understood. Furthermore, differentiated and unique congestion control can be performed specifically for that type of channel resource pool. Thus, such congestion control can be more precise and efficient.

[0105] In another embodiment, the wireless communication device 200 at the first node according to embodiments of the present disclosure includes: a transceiver 201 for transmitting and / or receiving radio signals; and circuitry 202 for measuring one or more channel busy ratios (CBRs) of a channel resource pool for the radio signals, and performing congestion control on the channel resource pool based on the measured one or more channel busy ratios. The first node may operate in one of different transmission modes, and circuitry 202 may measure the channel busy ratio of the channel resource pool for the radio signals with respect to different transmission modes.

[0106] In this embodiment, each CBR can be measured individually for each transmission mode, and the congestion situation for each transmission mode can be clearly understood. Furthermore, distinct and unique congestion control can be performed specifically for each transmission mode with respect to the UE. Therefore, this congestion control can be more precise and efficient.

[0107] In another embodiment, the wireless communication device 200 at the first node according to embodiments of the present disclosure includes: a transceiver 201 for transmitting and / or receiving radio signals; and circuitry 202 for measuring one or more channel busy ratios (CBRs) for a channel resource pool of the radio signals, and performing congestion control on the channel resource pool based on the measured one or more channel busy ratios. If the radio signals are multiple carriers, circuitry 202 may measure the channel busy ratio for the channel resource pool for each carrier.

[0108] In this embodiment, each CBR can be measured individually for each carrier, and the congestion situation for each carrier can be clearly understood. Therefore, distinct and unique congestion control can be performed specifically for each carrier. Consequently, this congestion control can be more precise and efficient.

[0109] Figure 9A A flowchart of a wireless communication method 900 according to an embodiment of the present disclosure is shown schematically.

[0110] The method 900 at the first node includes: step S901, measuring the channel busy ratio of different types of channel resource pools for radio signals respectively; and step S902, performing congestion control on different types of channel resource pools based on the measured channel busy ratio.

[0111] Therefore, each CBR can be measured individually for each type of channel resource pool, and the congestion situation for each type of channel resource pool can be clearly understood. Differential and unique congestion control can then be performed specifically for that type of channel resource pool. Thus, such congestion control can be more precise and efficient.

[0112] In an embodiment, different types of channel resource pools for radio signals may include a control channel resource pool and a data channel resource pool, and step S901 may include: measuring a first channel busy ratio for the control channel resource pool and measuring a second channel busy ratio for the data channel resource pool.

[0113] In an embodiment, the first node may operate in one of different transmission modes, and step S901 may include: measuring the channel busy ratio of different types of channel resource pools for radio signals for each of the different transmission modes.

[0114] In this embodiment, different transmission modes may include a first transmission mode based on base station scheduling and a second transmission mode as a user equipment autonomous resource allocation mode. When the first node operates in the first transmission mode, step S901 may include: measuring a first channel busy ratio of the control channel resource pool for the first transmission mode, and measuring a second channel busy ratio of the data channel resource pool for the first transmission mode.

[0115] In this embodiment, different transmission modes may include a first transmission mode and a second transmission mode. When the first node operates in the second transmission mode, step S901 may include: measuring a first channel busy ratio of the control channel resource pool for the second transmission mode, and measuring a second channel busy ratio of the data channel resource pool for the second transmission mode.

[0116] In an embodiment, when the radio signal consists of multiple carriers, step S901 may include: measuring the channel busy ratio for different types of channel resource pools for each carrier.

[0117] In an embodiment, if one or more of the channel busy ratios exceed a predetermined threshold, step S902 may include: not transmitting radio signals in unoccupied resources in one or more different types of channel resource pools corresponding to the one or more of the channel busy ratios.

[0118] In an embodiment, if one or more of the channel busy ratios exceed a predetermined threshold, step S902 may include one or more of the following: transmitting a radio signal in an occupied resource for data having a lower priority than the radio signal to be transmitted; transmitting a radio signal in the occupied resource by discarding data occupying the occupied resource; transmitting a radio signal by adjusting the radio parameters used for the radio signal; and delaying the transmission of the radio signal for a predetermined time.

[0119] In an embodiment, the radio parameters used for the radio signal may include one or more of the power and number of transmission blocks.

[0120] In an embodiment, if one or more of the channel busy ratios do not exceed a predetermined threshold, step S902 may include: transmitting a radio signal in one or more unoccupied resources in one or more channel resource pools of different types corresponding to the one or more of the channel busy ratios.

[0121] In an embodiment, method 900 may further include the step of reporting the measured channel busy ratio to a second node, wherein the first node is a user equipment and the second node is a base station.

[0122] In an embodiment, the reporting step may include: reporting the measured channel busy ratio to a second node in response to one of the following conditions: a predetermined time period has elapsed; at least one of the measured channel busy ratios exceeds a predetermined threshold; or the report is triggered by a base station.

[0123] In an embodiment, step 902 may include: measuring the channel busy ratio (CBR) by calculating the ratio of the number of occupied resources to the total number of resources, wherein the number of occupied resources indicates the number of computing units with radio signals having power greater than a threshold, and the total number of resources indicates the total number of computing units with radio signals.

[0124] In an embodiment, the radio signal computing unit may include one or more physical resource blocks or one or more resource block groups, and wherein the power includes radio signal power intensity or power spectral density.

[0125] In an embodiment, the control channel resource pool may include a physical-side cross-link control channel (PSCCH) resource pool, and the data channel resource pool may include a physical-side cross-link shared channel (PSSCH) resource pool.

[0126] Therefore, through the embodiments of this disclosure, each CBR can be measured individually for each type of channel resource pool, and the congestion situation for each type of channel resource pool can be clearly understood. Furthermore, differentiated and unique congestion control can be performed specifically for that type of channel resource pool. Thus, such congestion control can be more precise and efficient.

[0127] Figure 9B A flowchart of a wireless communication method 900' according to another embodiment of the present disclosure is shown schematically.

[0128] The method 900' of the first node includes: step S901', measuring one or more channel busy ratios for channel resource pools of radio signals with respect to different transmission modes; and step S902', performing congestion control on different types of channel resource pools based on the measured channel busy ratios.

[0129] In this embodiment, each CBR can be measured individually for each transmission mode, and the congestion situation for each transmission mode can be clearly understood. Furthermore, distinct and unique congestion control can be performed specifically for the UE in each transmission mode. Therefore, this congestion control can be more precise and efficient.

[0130] Figure 9C A flowchart of a wireless communication method 900 according to another embodiment of the present disclosure is shown schematically.

[0131] The method 900 at the first node includes: step S901, measuring one or more channel busy ratios for the channel resource pool of the radio signal for different transmission modes; and step S902, performing congestion control on different types of channel resource pools based on the measured channel busy ratios.

[0132] In this embodiment, each CBR can be measured individually for each carrier, and the congestion situation for each carrier can be clearly understood. Therefore, distinct and unique congestion control can be performed specifically for each carrier. Consequently, this congestion control can be more precise and efficient.

[0133] Figure 10 A block diagram of a wireless communication system 1000 according to an embodiment of the present disclosure is shown schematically.

[0134] The system 1000 at the first node includes: a processor H1; and a memory H2 coupled to the processor, which, when run by the processor, executes a method 900, including: step S901, measuring the channel busy ratio of different types of channel resource pools for radio signals; and step S902, performing congestion control on different types of channel resource pools based on the measured channel busy ratio.

[0135] In an embodiment, different types of channel resource pools for radio signals may include a control channel resource pool and a data channel resource pool, and step S901 may include: measuring a first channel busy ratio of the control channel resource pool and measuring a second channel busy ratio of the data channel resource pool.

[0136] In an embodiment, the first node may operate in one of different transmission modes, and step S901 may include: measuring the channel busy ratio for different types of channel resource pools for the radio signal, respectively, for each of the different transmission modes.

[0137] In this embodiment, different transmission modes may include a first transmission mode based on base station scheduling and a second transmission mode as a user equipment autonomous resource allocation mode. When the first node operates in the first transmission mode, step S901 may include: measuring a first channel busy ratio for the control channel resource pool used in the first transmission mode, and measuring a second channel busy ratio for the data channel resource pool used in the first transmission mode.

[0138] In an embodiment, different transmission modes may include a first transmission mode and a second transmission mode. When the first node operates in the second transmission mode, step S901 may include: measuring a first channel busy ratio for the control channel resource pool used in the second transmission mode, and measuring a second channel busy ratio for the data channel resource pool used in the second transmission mode.

[0139] In an embodiment, when the radio signal consists of multiple carriers, step S901 may include: measuring the channel busy ratio of different types of channel resource pools for each carrier.

[0140] In an embodiment, if one or more of the channel busy ratios exceed a predetermined threshold, step S902 may include: not transmitting radio signals in one or more unoccupied resources in one or more of the channel resource pools of different types corresponding to one or more of the channel busy ratios.

[0141] In an embodiment, if one or more of the channel busy ratios exceed a predetermined threshold, step S902 may include one or more of the following: transmitting a radio signal in an occupied resource for data having a lower priority than the radio signal to be transmitted; transmitting a radio signal in the occupied resource by discarding data occupying the occupied resource; transmitting a radio signal by adjusting the radio parameters used for the radio signal; and delaying the transmission of the radio signal for a predetermined time.

[0142] In an embodiment, the radio parameters used for the radio signal may include one or more of the power and number of transmission blocks.

[0143] In an embodiment, if one or more of the channel busy ratios do not exceed a predetermined threshold, step S902 may include: transmitting a radio signal in one or more unoccupied resources in one or more channel resource pools of different types corresponding to one or more of the channel busy ratios.

[0144] In an embodiment, method 900 may further include the step of reporting the measured channel busy ratio to a second node, wherein the first node is a user equipment and the second node is a base station.

[0145] In an embodiment, the reporting step may include reporting the measured channel busy ratio to a second node in response to one of the following conditions: a predetermined period of time has elapsed; at least one of the measured channel busy ratios exceeds a predetermined threshold; or the report is triggered by a base station.

[0146] In an embodiment, step 902 may include: measuring the Channel Busy Ratio (CBR) by calculating the ratio of the number of occupied resources to the total number of resources, wherein the number of occupied resources indicates the number of computing units with radio signals having power greater than a threshold, and the total number of resources indicates the total number of computing units with radio signals.

[0147] In an embodiment, the radio signal computing unit may include one or more physical resource blocks or one or more resource block groups, and wherein the power includes radio signal power intensity or power spectral density.

[0148] In an embodiment, the control channel resource pool may include a physical-side cross-link control channel (PSCCH) resource pool, and the data channel resource pool may include a physical-side cross-link shared channel (PSSCH) resource pool.

[0149] Therefore, through the embodiments of this disclosure, each CBR of each type of channel resource pool can be measured individually, and the congestion status of each type of channel resource pool can be clearly understood. Furthermore, differentiated and unique congestion control can be performed specifically for that type of channel resource pool. Thus, such congestion control can be more precise and efficient.

[0150] In addition, embodiments of this disclosure may provide at least the following topics.

[0151] (1) A device at a first node, comprising:

[0152] Transceiver, used to send and / or receive radio signals;

[0153] The circuit measures one or more channel busy ratios of the channel resource pool of the radio signal and performs congestion control on the channel resource pool based on the measured one or more channel busy ratios.

[0154] (2) The apparatus according to (1), wherein,

[0155] The circuit measures the channel busy ratio of different types of channel resource pools for the radio signal, and performs congestion control on the different types of channel resource pools based on the measured channel busy ratio.

[0156] (3) The apparatus according to (3), wherein the different types of channel resource pools for the radio signals include a control channel resource pool and a data channel resource pool, and

[0157] The circuit measures the first channel busy ratio of the control channel resource pool and the second channel busy ratio of the data channel resource pool.

[0158] (4) The apparatus according to (2), wherein the first node operates in one of different transmission modes, and the circuit measures the channel busy ratio of different types of channel resource pools of the radio signal with respect to the different transmission modes.

[0159] (5) The apparatus according to (4), wherein the different transmission modes include a first transmission mode based on base station scheduling and a second transmission mode as a user equipment autonomous resource allocation mode.

[0160] When the first node operates in the first transmission mode, the circuit measures a first channel busy ratio for the control channel resource pool in the first transmission mode and a second channel busy ratio for the data channel resource pool in the first transmission mode.

[0161] (6) The apparatus according to (4), wherein the different transmission modes include a first transmission mode and a second transmission mode.

[0162] When the first node operates in the second transmission mode, the circuit measures a first channel busy ratio for the control channel resource pool for the second transmission mode, and measures a second channel busy ratio for the data channel resource pool for the second transmission mode.

[0163] (7) The apparatus according to (2), wherein, when the radio signal is a plurality of carriers, the circuit measures the channel busy ratio of the different types of channel resource pools for each carrier.

[0164] (8) The apparatus according to (2), wherein, if one or more of the channel busy ratios exceed a predetermined threshold, the radio signal is not transmitted in one or more of the unoccupied resources of the channel resource pools of the different types corresponding to the one or more of the channel busy ratios.

[0165] (9) The apparatus according to (8), wherein the circuit instructs the transceiver to perform one or more of the following:

[0166] Transmit a radio signal from an existing resource that has a lower priority than the radio signal to be transmitted.

[0167] By discarding data that occupies the occupied resource, radio signals are transmitted in the occupied resource;

[0168] Radio signals are transmitted by adjusting the radio parameters used for the radio signals; and

[0169] The scheduled time was delayed in order to send radio signals.

[0170] (10) The apparatus according to (9), wherein the radio parameters for the radio signal include one or more of the power and number of the transmission blocks.

[0171] (11) The apparatus according to (2), wherein, if one or more of the channel busy ratios do not exceed a predetermined threshold, the radio signal is transmitted in one or more of the unoccupied resources of the channel resource pools of the different types corresponding to the one or more of the channel busy ratios.

[0172] (12) The apparatus according to (2), wherein the transceiver reports the measured channel busy ratio to a second node, wherein the first node is a user equipment and the second node is a base station.

[0173] (13) The apparatus according to (12), wherein the transceiver reports the measured channel busy ratio to the second node in response to one of the following conditions:

[0174] The scheduled time slot has passed;

[0175] At least one of the measured channel busy ratios exceeds a predetermined threshold; or

[0176] The report was triggered by the base station.

[0177] (14) The apparatus according to (2), wherein the circuit measures the channel busy ratio (CBR) by calculating the ratio of the number of occupied resources to the total number of resources.

[0178] The number of resources already occupied indicates the number of computing units with radio signals having power greater than a threshold, and the total number of resources indicates the total number of computing units with the radio signals.

[0179] (15) The apparatus according to (14), wherein the radio signal computing unit comprises one or more physical resource blocks or one or more resource block groups, and wherein the power comprises radio signal power intensity or power spectral density.

[0180] (16) The apparatus according to (3), wherein the control channel resource pool includes a physical-side cross-link control channel (PSCCH) resource pool, and the data channel resource pool includes a physical-side cross-link shared channel (PSSCH) resource pool.

[0181] (17) The apparatus of claim 1, wherein the first node operates in one of different transmission modes, and the circuit measures the channel busy ratio of the channel resource pool of the radio signal with respect to the different transmission modes.

[0182] (18) The apparatus of claim 1, wherein, in the case that the radio signal is a plurality of carriers, the circuit measures the channel busy ratio with respect to the channel resource pool for each carrier.

[0183] (19) A method for transmitting and / or receiving radio signals at a first node, the method comprising:

[0184] Measure the busy ratio of one or more channels in the channel resource pool of the radio signal, and

[0185] Congestion control is performed on the channel resource pool based on the measured busy ratio of one or more channels.

[0186] (20) According to the method of (19), wherein the different types of channel resource pools of the radio signals include a control channel resource pool and a data channel resource pool, and

[0187] The measurement includes: measuring the first channel busy ratio of the control channel resource pool and measuring the second channel busy ratio of the data channel resource pool.

[0188] (21) According to the method of (19), wherein the first node operates in one of different transmission modes, and the measurement includes: measuring the channel busy ratio of different types of channel resource pools of the radio signal with respect to the different transmission modes.

[0189] (22) According to the method of (21), wherein the different transmission modes include: a first transmission mode based on base station scheduling, and a second transmission mode as a user equipment autonomous resource allocation mode.

[0190] Wherein, when the first node operates in the first transmission mode, the measurement includes: measuring a first channel busy ratio of the control channel resource pool for the first transmission mode, and measuring a second channel busy ratio of the data channel resource pool for the first transmission mode.

[0191] (23) According to the method described in (21), wherein the different transmission modes include a first transmission mode and a second transmission mode,

[0192] When the first node operates in the second transmission mode, the measurement includes: measuring a first channel busy ratio of the control channel resource pool for the second transmission mode, and measuring a second channel busy ratio of the data channel resource pool for the second transmission mode.

[0193] (24) According to the method of (19), wherein, in the case that the radio signal is multiple carriers, the measurement includes: measuring the channel busy ratio of the different types of channel resource pools for each carrier.

[0194] (25) According to the method of (19), wherein, if one or more of the channel busy ratios exceed a predetermined threshold, the execution includes: not transmitting the radio signal in unoccupied resources in one or more of the channel resource pools of the different types corresponding to the one or more of the channel busy ratios.

[0195] (26) The method according to (25), wherein the execution includes one or more of the following:

[0196] Transmit a radio signal from an existing resource that has a lower priority than the radio signal to be transmitted.

[0197] By discarding data that occupies the occupied resource, radio signals are transmitted in the occupied resource;

[0198] Radio signals are transmitted by adjusting the radio parameters used for the radio signals; and

[0199] The scheduled time was delayed in order to send radio signals.

[0200] (27) According to the method of (25), wherein the radio parameters for the radio signal include one or more of the power and number of the transmission blocks.

[0201] (28) According to the method of (19), wherein, if one or more of the channel busy ratios do not exceed a predetermined threshold, the execution includes: transmitting the radio signal in one or more of the unoccupied resources of the channel resource pools of the different types corresponding to the one or more of the channel busy ratios.

[0202] (29) The method according to (19), wherein the method further comprises: reporting the measured channel busy ratio to a second node, wherein the first node is a user equipment and the second node is a base station.

[0203] (30) The method according to (29), wherein the method further comprises: reporting the measured channel busy ratio to the second node in response to one of the following conditions:

[0204] The scheduled time slot has passed;

[0205] At least one of the measured channel busy ratios exceeds a predetermined threshold; or

[0206] The report was triggered by the base station.

[0207] (31) According to the method of (19), wherein the measurement includes: measuring the channel busy ratio (CBR) by calculating the ratio of the number of resources occupied to the total number of resources.

[0208] The number of resources already occupied indicates the number of computing units with radio signals having power greater than a threshold, and the total number of resources indicates the total number of computing units with radio signals.

[0209] (32) According to the method of (31), wherein the radio signal computing unit includes one or more physical resource blocks or one or more resource block groups, and wherein the power includes radio signal power intensity or power spectral density.

[0210] (33) According to the method of (20), wherein the control channel resource pool includes a physical side link control channel (PSCCH) resource pool and the data channel resource pool includes a physical side link shared channel (PSSCH) resource pool.

[0211] (34) According to the method of (19), wherein the first node operates in one of different transmission modes, and the measurement includes: measuring the channel busy ratio of the channel resource pool of the radio signal with respect to the different transmission modes.

[0212] (35) According to the method of (19), wherein, in the case that the radio signal is a plurality of carriers, the measurement includes: measuring the channel busy ratio of the channel resource pool for each carrier.

[0213] (36) A system at a first node, comprising:

[0214] processor;

[0215] A memory, coupled to the processor, which, when run by the processor, performs methods including the following:

[0216] The channel busy ratios of different types of channel resource pools for the radio signal were measured respectively, and

[0217] Congestion control is performed on different types of channel resource pools based on the measured channel busy ratio.

[0218] (37) The system according to (36), wherein the different types of channel resource pools for the radio signals include a control channel resource pool and a data channel resource pool, and

[0219] The measurement includes: measuring the first channel busy ratio of the control channel resource pool and measuring the second channel busy ratio of the data channel resource pool.

[0220] (38) The system according to (36), wherein the first node operates in one of different transmission modes, and the measurement includes: measuring the channel busy ratio of different types of channel resource pools of the radio signal with respect to the different transmission modes.

[0221] (39) The system according to (38), wherein the different transmission modes include a first transmission mode and a second transmission mode.

[0222] Wherein, when the first node operates in the first transmission mode, the measurement includes: measuring a first channel busy ratio of the control channel resource pool for the first transmission mode, and measuring a second channel busy ratio of the data channel resource pool for the first transmission mode.

[0223] (40) The system according to (38), wherein the different transmission modes include a first transmission mode and a second transmission mode,

[0224] The measurement includes: measuring a first channel busy ratio of the control channel resource pool for the second transmission mode, and measuring a second channel busy ratio of the data channel resource pool for the second transmission mode.

[0225] (41) According to the system of (36), wherein, in the case that the radio signal is a plurality of carriers, the measurement includes: measuring the channel busy ratio of the different types of channel resource pools for each carrier.

[0226] (42) According to the system of (36), wherein, if one or more of the channel busy ratios exceed a predetermined threshold, the execution includes: not transmitting the radio signal in unoccupied resources in one or more of the channel resource pools of the different types corresponding to the one or more of the channel busy ratios.

[0227] (43) The system according to (42), wherein the execution includes one or more of the following:

[0228] Transmit a radio signal from an existing resource that has a lower priority than the radio signal to be transmitted.

[0229] By discarding data that occupies the occupied resource, radio signals are transmitted in the occupied resource;

[0230] Radio signals are transmitted by adjusting the radio parameters used for the radio signals; and

[0231] The scheduled time was delayed in order to send radio signals.

[0232] (44) According to the system of (43), the radio parameters for the radio signal include one or more of the power and number of the transmission blocks.

[0233] (45) The system according to (36), wherein, if one or more of the channel busy ratios do not exceed a predetermined threshold, the execution includes: transmitting the radio signal in unoccupied resources in one or more of the channel resource pools of the different types corresponding to the one or more of the channel busy ratios.

[0234] (46) According to the system of (36), the method further includes: reporting the measured channel busy ratio to a second node, wherein the first node is a user equipment and the second node is a base station.

[0235] (47) The system according to (46), wherein the method further comprises: reporting the measured channel busy ratio to the second node in response to one of the following conditions:

[0236] The scheduled time slot has passed;

[0237] At least one of the measured channel busy ratios exceeds a predetermined threshold; or

[0238] The report was triggered by the base station.

[0239] (48) According to the system described in (36), wherein the measurement includes: measuring the channel busy ratio (CBR) by calculating the ratio of the number of occupied resources to the total number of resources.

[0240] The number of resources already occupied indicates the number of computing units with radio signals having power greater than a threshold, and the total number of resources indicates the total number of computing units with radio signals.

[0241] (49) The system according to (48), wherein the radio signal computing unit includes one or more physical resource blocks or one or more resource block groups, and wherein the power includes radio signal power intensity or power spectral density.

[0242] (50) The system according to (37), wherein the control channel resource pool includes a physical-side cross-link control channel (PSCCH) resource pool and the data channel resource pool includes a physical-side cross-link shared channel (PSSCH) resource pool.

[0243] (51) According to the method of (36), wherein the first node operates in one of different transmission modes, and the measurement includes: measuring the channel busy ratio of the channel resource pool of the radio signal with respect to the different transmission modes.

[0244] (52) According to the method of (36), wherein, in the case that the radio signal is a plurality of carriers, the measurement includes: measuring the channel busy ratio with respect to the channel resource pool for each carrier.

[0245] This disclosure can be implemented by software, hardware, or software working in conjunction with hardware. Each functional block used in the description of each of the above embodiments can be implemented by an LSI as an integrated circuit, and each process described in each embodiment can be controlled by an LSI. They can be individually configured as chips, or a chip can be configured to include some or all of the functional blocks. They can include data inputs and outputs coupled thereto. Depending on the degree of integration, an LSI may be referred to herein as an IC, a system LSI, a super LSI, or an ultra-LSI. However, the techniques for implementing integrated circuits are not limited to LSIs and can be implemented using dedicated circuits or general-purpose processors. Furthermore, FPGAs (Field-Programmable Gate Arrays) that can be programmed after the LSI is manufactured, or reconfigurable processors that can reconfigure the connections and settings of the circuit cells deployed within the LSI, can be used.

[0246] Examples of several embodiments of the present disclosure have been described in detail above with reference to the accompanying description of specific examples. Since it is obviously impossible to describe every conceivable combination of components or technologies, those skilled in the art will understand that various modifications can be made to the above embodiments without departing from the scope of the present disclosure. For example, it will be readily understood that although the above embodiments have been described with reference to the 3GPP network section, the embodiments of the present disclosure will also be applicable to similar networks (e.g., successors to 3GPP networks) having similar functional components.

[0247] Therefore, specifically, the terms 3GPP and related or associated terms used now or in the above description, as well as in the drawings and any appended claims, should be interpreted accordingly.

[0248] This disclosure can be implemented by software, hardware, or software working in conjunction with hardware. Each functional block used in the description of each of the above embodiments can be implemented by an LSI as an integrated circuit, and each process described in each embodiment can be controlled by an LSI. They can be individually configured as chips, or a chip can be configured to include some or all of the functional blocks. They can include data inputs and outputs coupled thereto. Depending on the degree of integration, an LSI may be referred to herein as an IC, a system LSI, a super LSI, or an ultra-LSI. However, the techniques for implementing integrated circuits are not limited to LSIs and can be implemented using dedicated circuits or general-purpose processors. Furthermore, FPGAs (Field-Programmable Gate Arrays) that can be programmed after the LSI is manufactured, or reconfigurable processors that can reconfigure the connections and settings of the circuit cells deployed within the LSI, can be used.

[0249] It is worth noting that those skilled in the art, benefiting from the teachings set forth in the foregoing description and associated drawings, will conceive of modifications and other embodiments of the disclosed content. Therefore, it should be understood that this disclosure is not limited to the specific embodiments disclosed, and modifications and other embodiments are intended to be included within the scope of this disclosure. While specific terminology may be used herein, it is used only in a general and descriptive sense and not for limiting purposes.

Claims

1. A first communication device representing a user equipment, the first communication device comprising: A circuit that measures one or more channel busy ratios for one or more resource pools, wherein the one or more channel busy ratios include one or more channel busy ratios related to a first type of channel resource pool and one or more channel busy ratios related to a second type of channel resource pool; and The transmitter transmits radio signals to the second communication device by adjusting radio parameters, at least the power and number of transmission blocks, based on the busy ratio of the one or more channels. The one or more channel busy ratios include one or more channel busy ratios related to the data channel and one or more channel busy ratios related to the control channel.

2. The first communication device as claimed in claim 1, wherein, The one or more channel busy ratios include one or more channel busy ratios related to the Physical Side Link Shared Channel (PSSCH) and one or more channel busy ratios related to the Physical Side Link Control Channel (PSCCH).

3. The first communication device as claimed in claim 1, wherein, The one or more channel busy ratios include one or more channel busy ratios related to a first transmission mode of base station scheduling resources.

4. The first communication device as claimed in claim 3, wherein, The one or more channel busy ratios include one or more channel busy ratios related to a second transmission mode in which the first communication device autonomously schedules resources.

5. The first communication device as claimed in claim 1, wherein, For each component carrier, measure the busy ratio of the one or more channels.

6. The first communication device as claimed in claim 1, wherein, The transmitter reports to the base station the measured busy ratio of one or more channels.

7. The first communication device as claimed in claim 6, wherein, Reports of the busy ratio of one or more measured channels are triggered by events.

8. The first communication device as claimed in claim 6, wherein, Periodically report the measured busy ratio of one or more channels.

9. The first communication device as claimed in claim 1, wherein, Each of the one or more channel busy ratios indicates the ratio of the number of resources exceeding a threshold to the total number of resources.

10. The first communication device as claimed in claim 1, wherein, Calculate each of the one or more channel busy ratios on multiple physical resource blocks (PRBs).

11. A communication method performed by a first communication device representing a user equipment, comprising: Measure one or more channel busy ratios for one or more resource pools, wherein the one or more channel busy ratios include one or more channel busy ratios related to a first type of channel resource pool and one or more channel busy ratios related to a second type of channel resource pool; and Radio signals are transmitted to the second communication device by adjusting the radio parameters of the transmission power and number of transmission blocks based on the busy ratio of the one or more channels. The one or more channel busy ratios include one or more channel busy ratios related to the data channel and one or more channel busy ratios related to the control channel.

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