Operating Class（简称 OP Class）是 IEEE 802.11 标准中定义的一个 逻辑概念，它是一个监管域相关的频谱配置打包标签，它把 频段 + 信道集合 + 信道间距/带宽 + 其它行为限制 用一个数字编码起来，方便设备在不同国家和地区快速理解“哪些信道可以合法使用”。

OP Class 的作用

  1. 规范信道选择

    • 不同国家/地区对无线频段有不同限制（2.4 GHz 最大功率、5 GHz DFS 信道、6 GHz AFC）。
    • OP Class 将这些限制抽象成一个逻辑编号，让 STA/AP 能快速理解可用信道范围。
    • 结合 Country IE，OP Class 确保设备操作符合所在国家的法规要求。

  2. 简化多频段 / 多带宽选择

    • 对于支持 802.11ac/ax/be 的设备，OP Class 指明了 AP 支持的带宽与信道组合（例如 80 MHz 或 160 MHz 信道）。 STA 可以快速选择最佳信道，无需解析所有原始频道信息。

OP Class 出现的场景

  1. Beacon / Probe Response

下图所示的 Beacon 帧中，AP 广播了其支持的 Operating Class 128，表示该 AP 支持 5 GHz 80 MHz 带宽，wireshark 解析其支持的中心频率信道集合为 42、58、106、122、138 和 155，当然，其中也包括了对射频功率的限制。
此外，该 AP 还广播了支持其他 Operating Class 1、2、22、23、27、28 等。

  1. Country IE / Regulatory Domain

不同的监管域（如美国、欧洲、日本、中国等）有不同的频谱使用规定，各自的监管域有不同的 OP Class 定义。 AP 广播的 Beacon 帧中携带 Country IE 信息中会指明当前的监管域， STA 可以结合 Country IE 和 OP Class 选择合适的信道和带宽。

不同监管域的 OP Class 详细定义请参考后续章节中的 Table E-1、E-2、E-3、E-4 和 E-6。

在下图所示的 Beacon 帧中，AP 广播的 Country IE 中指明 AP 的国家码是 AU（澳大利亚），并在 Environment 字段中指明了但前使用的 OP Class table 是 4，也就是 Table E-4（Global operating classes）中定义的频段、信道集合、带宽和功率限制操作。

下图所示的 Beacon 帧中，AP 广播的 Country IE 中指明 AP 的国家码是 AU（澳大利亚），并在 Environment 字段中设置了 all, 表示该 AP 在当前国家中全环境（室内或者室外）合规。

对于 Country IE 中 Environment 字段的更多解释，参考如下表格：

Environment 适用场景 典型使用场景
空格（） 该国当前频段的全环境合规（室内 + 户外通用） 家用路由器、手机等通用设备
O（大写字母 O） 仅户外环境合规（户外频段功率限制更宽松，避免干扰室内设备） 户外无线桥接、基站设备
I（大写字母 I） 仅室内环境合规（室内频段功率较低，减少邻区干扰） 办公室 AP、智能家居设备
X（大写字母 X） 非国家实体（如国际组织、特殊频谱区域），遵循该实体专属频谱法规 国际航线 Wi-Fi、特殊行业设备
表格编号 遵循表格 E-x 中定义的特定操作等级表格（表格包含该等级对应的信道、功率等参数） 需精准适配特定频段政策的设备
  1. Association / Reassociation

在关联请求帧中，STA 会携带其支持的 Operating Class 列表以及但前的 Operating Class， AP 根据 STA 的支持情况和当前的 Country IE 选择合适的信道和带宽进行关联响应。

Qualcomm WLAN Driver 中的 OP Class 实现

OP Class 在 Qualcomm WLAN Driver 中的定义如下：
https://github.com/WANG-Guangxin/wlan-driver/blob/42bda57657c96540a5252ce4cc514ef5f27a10ad/qca-wifi-host-cmn/umac/regulatory/dispatcher/inc/reg_services_public_struct.h#L775

/**
 * struct reg_dmn_op_class_map_t: operating class
 * @op_class: operating class number
 * @chan_spacing: channel spacing
 * @offset: offset
 * @behav_limit: OR of bitmaps of enum behav_limit
 * @start_freq: starting frequency
 * @channels: channel set
 * @p_cfi_lst_obj: Pointer to center frequency indices list
 */
struct reg_dmn_op_class_map_t {
	uint8_t op_class;
	uint16_t chan_spacing;
	enum offset_t offset;
	uint16_t behav_limit;
	qdf_freq_t start_freq;
	uint8_t channels[REG_MAX_CHANNELS_PER_OPERATING_CLASS];
	const struct c_freq_lst *p_cfi_lst_obj;
};

然后在 reg_opclass.c 中定义了不同监管域的 OP Class 列表:

reg_opclass.c 中的 global_op_class 列表

https://github.com/WANG-Guangxin/wlan-driver/blob/42bda57657c96540a5252ce4cc514ef5f27a10ad/qca-wifi-host-cmn/umac/regulatory/core/src/reg_opclass.c#L168

static const struct reg_dmn_op_class_map_t global_op_class[] = {
	{81, 25, BW20, BIT(BEHAV_NONE), 2407,
	 {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13},
	 NULL_CFIS_LST },
	{82, 25, BW20, BIT(BEHAV_NONE), 2414,
	 {14},
	 NULL_CFIS_LST },
	{83, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 2407,
	 {1, 2, 3, 4, 5, 6, 7, 8, 9},
	 NULL_CFIS_LST },
	{84, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 2407,
	 {5, 6, 7, 8, 9, 10, 11, 12, 13},
	 NULL_CFIS_LST },
	{115, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48},
	 NULL_CFIS_LST },
	{116, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {36, 44},
	 NULL_CFIS_LST },
	{117, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {40, 48},
	 NULL_CFIS_LST },
	{118, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {52, 56, 60, 64},
	 NULL_CFIS_LST },
	{119, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {52, 60},
	 NULL_CFIS_LST },
	{120, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {56, 64},
	 NULL_CFIS_LST },
	{121, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144},
	 NULL_CFIS_LST },
	{122, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {100, 108, 116, 124, 132, 140},
	 NULL_CFIS_LST },
	{123, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {104, 112, 120, 128, 136, 144},
	 NULL_CFIS_LST },
	{125, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {149, 153, 157, 161, 165, 169, 173, 177},
	 NULL_CFIS_LST },
	{126, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {149, 157, 165, 173},
	 NULL_CFIS_LST },
	{127, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {153, 161, 169, 177},
	 NULL_CFIS_LST },
	{128, 80, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64,
	  100, 104, 108, 112, 116, 120, 124, 128,
	  132, 136, 140, 144, 149, 153, 157, 161,
	  165, 169, 173, 177},
	  NULL_CFIS_LST },
	{129, 160, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64,
	  100, 104, 108, 112, 116, 120, 124, 128,
	  149, 153, 157, 161, 165, 169, 173, 177},
	 NULL_CFIS_LST },
	{130, 80, BW80, BIT(BEHAV_BW80_PLUS), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64,
	  100, 104, 108, 112, 116, 120, 124, 128,
	  132, 136, 140, 144, 149, 153, 157, 161,
	  165, 169, 173, 177},
	 NULL_CFIS_LST },

#ifdef CONFIG_BAND_6GHZ
	{131, 20, BW20, BIT(BEHAV_NONE), 5950,
	 {1, 5, 9, 13, 17, 21, 25, 29, 33,
	  37, 41, 45, 49, 53, 57, 61, 65, 69,
	  73, 77, 81, 85, 89, 93, 97,
	  101, 105, 109, 113, 117, 121, 125,
	  129, 133, 137, 141, 145, 149, 153,
	  157, 161, 165, 169, 173, 177, 181,
	  185, 189, 193, 197, 201, 205, 209,
	  213, 217, 221, 225, 229, 233},
	&CFISLST(131)},

	{132, 40, BW40_LOW_PRIMARY, BIT(BEHAV_NONE), 5950,
	 {1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49,
	  53, 57, 61, 65, 69, 73, 77, 81, 85, 89, 93, 97,
	  101, 105, 109, 113, 117, 121, 125, 129, 133, 137,
	  141, 145, 149, 153, 157, 161, 165, 169, 173, 177,
	  181, 185, 189, 193, 197, 201, 205, 209, 213, 217,
	  221, 225, 229, 233},
	&CFISLST(132)},

	{133, 80, BW80, BIT(BEHAV_NONE), 5950,
	 {1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49,
	  53, 57, 61, 65, 69, 73, 77, 81, 85, 89, 93, 97,
	  101, 105, 109, 113, 117, 121, 125, 129, 133, 137,
	  141, 145, 149, 153, 157, 161, 165, 169, 173,
	  177, 181, 185, 189, 193, 197, 201, 205, 209, 213,
	  217, 221, 225, 229, 233},
	&CFISLST(133)},

	{134, 160, BW80, BIT(BEHAV_NONE), 5950,
	 {1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45,
	  49, 53, 57, 61, 65, 69, 73, 77, 81, 85, 89,
	  93, 97, 101, 105, 109, 113, 117, 121, 125,
	  129, 133, 137, 141, 145, 149, 153, 157, 161,
	  165, 169, 173, 177, 181, 185, 189, 193, 197,
	     201, 205, 209, 213, 217, 221, 225, 229, 233},
	&CFISLST(134)},

	{135, 80, BW80, BIT(BEHAV_BW80_PLUS), 5950,
	 {1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41,
	  45, 49, 53, 57, 61, 65, 69, 73, 77, 81,
	  85, 89, 93, 97, 101, 105, 109, 113, 117,
	  121, 125, 129, 133, 137, 141, 145, 149,
	  153, 157, 161, 165, 169, 173, 177, 181,
	  185, 189, 193, 197, 201, 205, 209, 213,
	  217, 221, 225, 229, 233},
	&CFISLST(135)},

	{136, 20, BW20, BIT(BEHAV_NONE), 5925,
	 {2},
	&CFISLST(136)},
#ifdef WLAN_FEATURE_11BE
	{137, 320, BW20, BIT(BEHAV_NONE), 5950,
	 {1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41,
	  45, 49, 53, 57, 61, 65, 69, 73, 77, 81,
	  85, 89, 93, 97, 101, 105, 109, 113, 117,
	  121, 125, 129, 133, 137, 141, 145, 149,
	  153, 157, 161, 165, 169, 173, 177, 181,
	  185, 189, 193, 197, 201, 205, 209, 213,
	  217, 221, 225, 229, 233},
	&CFISLST(137)},
#endif
#endif
	{0, 0, 0, 0, 0, {0},
	NULL_CFIS_LST },
};
reg_opclass.c 中的 us_op_class 列表

https://github.com/WANG-Guangxin/wlan-driver/blob/42bda57657c96540a5252ce4cc514ef5f27a10ad/qca-wifi-host-cmn/umac/regulatory/core/src/reg_opclass.c#L303

static const struct reg_dmn_op_class_map_t us_op_class[] = {
	{1, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48},
	 NULL_CFIS_LST },
	{2, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {52, 56, 60, 64},
	 NULL_CFIS_LST },
	{4, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144},
	 NULL_CFIS_LST },
	{5, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {149, 153, 157, 161, 165},
	 NULL_CFIS_LST },
	{12, 25, BW20, BIT(BEHAV_NONE), 2407,
	 {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11},
	 NULL_CFIS_LST },
	{22, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {36, 44},
	 NULL_CFIS_LST },
	{23, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {52, 60},
	 NULL_CFIS_LST },
	{24, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {100, 108, 116, 124, 132, 140},
	 NULL_CFIS_LST },
	{26, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {149, 157},
	 NULL_CFIS_LST },
	{27, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {40, 48},
	 NULL_CFIS_LST },
	{28, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {56, 64},
	 NULL_CFIS_LST },
	{29, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {104, 112, 120, 128, 136, 144},
	 NULL_CFIS_LST },
	{30, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {153, 161},
	 NULL_CFIS_LST },
	{31, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {153, 161},
	 NULL_CFIS_LST },
	{32, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 2407,
	 {1, 2, 3, 4, 5, 6, 7},
	 NULL_CFIS_LST },
	{33, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 2407,
	 {5, 6, 7, 8, 9, 10, 11},
	 NULL_CFIS_LST },
	{128, 80, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 100,
	  104, 108, 112, 116, 120, 124, 128, 132,
	  136, 140, 144, 149, 153, 157, 161},
	 NULL_CFIS_LST },
	{129, 160, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 100,
	  104, 108, 112, 116, 120, 124, 128},
	 NULL_CFIS_LST },
	{130, 80, BW80, BIT(BEHAV_BW80_PLUS), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 100,
	  104, 108, 112, 116, 120, 124, 128, 132,
	  136, 140, 144, 149, 153, 157, 161},
	 NULL_CFIS_LST },
	{0, 0, 0, 0, 0, {0},
	 NULL_CFIS_LST },
};
reg_opclass.c 中的 euro_op_class 列表

https://github.com/WANG-Guangxin/wlan-driver/blob/42bda57657c96540a5252ce4cc514ef5f27a10ad/qca-wifi-host-cmn/umac/regulatory/core/src/reg_opclass.c#L370

static const struct reg_dmn_op_class_map_t euro_op_class[] = {
	{1, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48},
	 NULL_CFIS_LST },
	{2, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {52, 56, 60, 64},
	 NULL_CFIS_LST },
	{3, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {100, 104, 108, 112, 116, 120,
	  124, 128, 132, 136, 140},
	 NULL_CFIS_LST },
	{4, 25, BW20, BIT(BEHAV_NONE), 2407,
	 {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13},
	 NULL_CFIS_LST },
	{5, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {36, 44},
	 NULL_CFIS_LST },
	{6, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {52, 60},
	 NULL_CFIS_LST },
	{7, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {100, 108, 116, 124, 132},
	 NULL_CFIS_LST },
	{8, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {40, 48},
	 NULL_CFIS_LST },
	{9, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {56, 64},
	 NULL_CFIS_LST },
	{10, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {104, 112, 120, 128, 136},
	 NULL_CFIS_LST },
	{11, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 2407,
	 {1, 2, 3, 4, 5, 6, 7, 8, 9},
	 NULL_CFIS_LST },
	{12, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 2407,
	 {5, 6, 7, 8, 9, 10, 11, 12, 13},
	 NULL_CFIS_LST },
	{17, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {149, 153, 157, 161, 165, 169},
	 NULL_CFIS_LST },
	{128, 80, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120,
	  124, 128},
	 NULL_CFIS_LST },
	{129, 160, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 100,
	  104, 108, 112, 116, 120, 124, 128},
	 NULL_CFIS_LST },
	{130, 80, BW80, BIT(BEHAV_BW80_PLUS), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120,
	  124, 128},
	 NULL_CFIS_LST },
	{0, 0, 0, 0, 0, {0},
	 NULL_CFIS_LST },
};
reg_opclass.c 中的 japan_op_class 列表

https://github.com/WANG-Guangxin/wlan-driver/blob/42bda57657c96540a5252ce4cc514ef5f27a10ad/qca-wifi-host-cmn/umac/regulatory/core/src/reg_opclass.c#L427

static const struct reg_dmn_op_class_map_t japan_op_class[] = {
	{1, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48},
	 NULL_CFIS_LST },
	{30, 25, BW20, BIT(BEHAV_NONE), 2407,
	 {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13},
	 NULL_CFIS_LST },
	{31, 25, BW20, BIT(BEHAV_NONE), 2414,
	 {14},
	 NULL_CFIS_LST },
	{32, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {52, 56, 60, 64},
	 NULL_CFIS_LST },
	{34, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140},
	 NULL_CFIS_LST },
	{36, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {36, 44},
	 NULL_CFIS_LST },
	{37, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {52, 60},
	 NULL_CFIS_LST },
	{39, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {100, 108, 116, 124, 132},
	 NULL_CFIS_LST },
	{41, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {40, 48},
	 NULL_CFIS_LST },
	{42, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {56, 64},
	 NULL_CFIS_LST },
	{44, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {104, 112, 120, 128, 136},
	 NULL_CFIS_LST },
	{128, 80, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120,
	  124, 128, 132, 136, 140, 144},
	 NULL_CFIS_LST },
	{129, 160, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 100,
	  104, 108, 112, 116, 120, 124, 128},
	 NULL_CFIS_LST },
	{130, 80, BW80, BIT(BEHAV_BW80_PLUS), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120,
	  124, 128, 132, 136, 140, 144},
	 NULL_CFIS_LST },
	{0, 0, 0, 0, 0, {0},
	 NULL_CFIS_LST },
};
reg_opclass.c 中的 china_op_class 列表

https://github.com/WANG-Guangxin/wlan-driver/blob/42bda57657c96540a5252ce4cc514ef5f27a10ad/qca-wifi-host-cmn/umac/regulatory/core/src/reg_opclass.c#L477C44-L477C58

static const struct reg_dmn_op_class_map_t china_op_class[] = {
	{7, 25, BW20, BIT(BEHAV_NONE), 2407,
	 {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13},
	 NULL_CFIS_LST },
	{8, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 2407,
	 {1, 2, 3, 4, 5, 6, 7, 8, 9},
	 NULL_CFIS_LST },
	{9, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 2407,
	 {5, 6, 7, 8, 9, 10, 11, 12, 13},
	 NULL_CFIS_LST },
	{1, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48},
	 NULL_CFIS_LST },
	{4, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {36, 44},
	 NULL_CFIS_LST },
	{117, 40, BW40_HIGH_PRIMARY, BIT(BEHAV_BW40_HIGH_PRIMARY), 5000,
	 {40, 48},
	 NULL_CFIS_LST },
	{2, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {52, 56, 60, 64},
	 NULL_CFIS_LST },
	{5, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {52, 60},
	 NULL_CFIS_LST },
	{3, 20, BW20, BIT(BEHAV_NONE), 5000,
	 {149, 153, 157, 161, 165},
	 NULL_CFIS_LST },
	{6, 40, BW40_LOW_PRIMARY, BIT(BEHAV_BW40_LOW_PRIMARY), 5000,
	 {149, 157},
	 NULL_CFIS_LST },
	{128, 80, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161},
	 NULL_CFIS_LST },
	{129, 160, BW80, BIT(BEHAV_NONE), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64,},
	 NULL_CFIS_LST },
	{130, 80, BW80, BIT(BEHAV_BW80_PLUS), 5000,
	 {36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161},
	 NULL_CFIS_LST },
	{0, 0, 0, 0, 0, {0},
	 NULL_CFIS_LST },
};

驱动通过国家码来选择对应的 OP Class 列表:

https://github.com/WANG-Guangxin/wlan-driver/blob/42bda57657c96540a5252ce4cc514ef5f27a10ad/qca-wifi-host-cmn/umac/regulatory/core/src/reg_opclass.c#L527

在 Qualcomm 的实现中，通过Country IE 的第三个字节（也就是前文提到的 Environment 字段）来区分不同的国家/地区对应的 OP Class 列表。如果该字段无法识别，则通过前两个字节（国家码）来选择对应的 OP Class 列表。

static const struct reg_dmn_op_class_map_t
*reg_get_class_from_country(const uint8_t *country)
{
	const struct reg_dmn_op_class_map_t *class = NULL;

	if (!country)
		return global_op_class;

	reg_debug_rl("Country %c%c 0x%x", country[0], country[1], country[2]);

	switch (country[2]) {
	case OP_CLASS_US:
		class = us_op_class;
		break;

	case OP_CLASS_EU:
		class = euro_op_class;
		break;

	case OP_CLASS_JAPAN:
		class = japan_op_class;
		break;

	case OP_CLASS_GLOBAL:
		class = global_op_class;
		break;

	case OP_CLASS_CHINA:
		class = china_op_class;
		break;
	default:
		if (!qdf_mem_cmp(country, "US", 2))
			class = us_op_class;
		else if (!qdf_mem_cmp(country, "EU", 2))
			class = euro_op_class;
		else if (!qdf_mem_cmp(country, "JP", 2))
			class = japan_op_class;
		else if (!qdf_mem_cmp(country, "CN", 2))
			class = china_op_class;
		else
			class = global_op_class;
	}
	return class;
}

Table E-1—Operating classes in the United States and its territories

Operating class Global operating class (see Table E-4) Channel starting frequency (GHz) Channel spacing (MHz) LC IF Channel starting frequency (MHz) Channel set Channel number of the center frequency
1 115 5 20 –154 36, 40, 44, 48 —
2 118 5 20 –154 52, 56, 60, 64 —
3 124 5 20 149, 153, 157, 161 —
4 121 5 20 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144 —
5 125 5 20 149, 153, 157, 161, 165 —
6 103 4.9375 5 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 —
7 103 4.9375 5 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 —
8 102 4.89 10 11, 13, 15, 17, 19 —
9 102 4.89 10 11, 13, 15, 17, 19 —
10 101 4.85 20 21, 25 —
11 101 4.85 20 21, 25 —
12 81 2.407 25 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 —
13 94 3.000 20 133, 137 —
14 95 3.000 10 132, 134, 136, 138 —
15 96 3.0025 5 131, 132, 133, 134, 135, 136, 137, 138 —
16 — 5.0025 5 170–184 —
17 — 5 10 171–184 —
18 — 5 20 172–183 —
19–21 Reserved Reserved Reserved Reserved Reserved
22 116 5 40 –154 36, 44 —
23 119 5 40 –154 52, 60 —
24 122 5 40 100, 108, 116, 124, 132, 140 —
25 126 5 40 149, 157 —
26 126 5 40 149, 157 —
27 117 5 40 –154 40, 48 —
28 120 5 40 –154 56, 64 —
29 123 5 40 104, 112, 120, 128, 136, 144 —
30 127 5 40 153, 161 —
31 127 5 40 153, 161 —
32 83 2.407 40 1–7 —
33 84 2.407 40 5–11 —
34 180 56.16 2160 1, 2, 3, 4, 5, 6, 7, 8 —
35 181 56.16 4320 9, 10, 11, 12, 13, 14, 15 —
36 182 56.16 6480 17, 18, 19, 20, 21, 22 —
37 183 56.16 8640 25, 26, 27, 28, 29 —
38–127 Reserved Reserved Reserved Reserved Reserved
128 128 5 80 −154 — 42, 58, 106, 122, 138, 155
129 129 5 160 −154 — 50, 114
130 130 5 80 — 42, 58, 106, 122, 138, 155
131–255 Reserved Reserved Reserved Reserved Reserved

NOTE 1—The channel spacing for operating classes 22 to 33 specifies the maximum radio bandwidth of one frequency segment. In these operating classes, the AP operating in a 20/40 MHz BSS, and the operating channel width for a non-AP STA is either 20 MHz or 40 MHz.

NOTE 2—The channel spacing for operating classes 128, 129, and 130 specifies the maximum radio bandwidth of one frequency segment.

Table E-2—Operating classes in Europe

Operating class Global operating class (see Table E-4) Channel starting frequency (GHz) Channel spacing (MHz) LC IF Channel starting frequency (MHz) Channel set Channel number of the center frequency
1 115 5 20 −154 36, 40, 44, 48 —
2 118 5 20 −154 52, 56, 60, 64 —
3 121 5 20 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 —
4 81 2.407 25 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 —
5 116 5 40 −154 36, 44 —
6 119 5 40 −154 52, 60 —
7 122 5 40 100, 108, 116, 124, 132 —
8 117 5 40 −154 40, 48 —
9 120 5 40 −154 56, 64 —
10 123 5 40 104, 112, 120, 128, 136 —
11 83 2.407 40 1–9 —
12 84 2.407 40 5–13 —
13 — 5.0025 5 171–184 —
14 — 5 10 171–184 —
15 — 5 20 172–183 —
16 — 5 20 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 —
17 125 5 20 149, 153, 157, 161, 165, 169 —
18 180 56.16 2160 1, 2, 3, 4 —
19 181 56.16 4320 9, 10, 11 —
20 182 56.16 6480 17, 18 —
21 183 56.16 8640 25 —
22–127 Reserved Reserved Reserved Reserved Reserved
128 128 5 80 −154 — 42, 58, 106, 122
129 129 5 160 −154 — 50, 114
130 130 5 80 −154 — 42, 58, 106, 122
131–255 Reserved Reserved Reserved Reserved Reserved

NOTE 1—The channel spacing for operating classes 5 to 12 specifies the maximum radio bandwidth of one frequency segment In these operating classes, the AP operates in a 20/40 MHz BSS, and the operating channel width for a non-AP STA is either 20 MHz or 40 MHz.

NOTE 2—The channel spacing for operating classes 128, 129, and 130 specifies the maximum radio bandwidth of one frequency segment.

Table E-3—Operating classes in Japan

Operating class Global operating class (see Table E-4) Channel starting frequency (GHz) Channel spacing (MHz) LC IF Channel starting frequency (MHz) Channel set Channel number of the center frequency
1 115 5 20 −154 34, 38, 42, 46
36, 40, 44, 48		 —
2 Reserved Reserved Reserved Reserved Reserved
3 Reserved Reserved Reserved Reserved Reserved
4–5 Reserved Reserved Reserved Reserved Reserved
6 Reserved Reserved Reserved Reserved Reserved
7 Reserved Reserved Reserved Reserved Reserved
8 109 4 20 184, 188, 192, 196 —
9–10 Reserved Reserved Reserved Reserved Reserved
11 109 4 20 184, 188, 192, 196 —
12 Reserved Reserved Reserved Reserved Reserved
13 Reserved Reserved Reserved Reserved Reserved
14–16 Reserved Reserved Reserved Reserved Reserved
17 110 4 10 183, 184, 185, 187, 188, 189 —
18–19 Reserved Reserved Reserved Reserved Reserved
20 110 4 10 183, 184, 185, 187, 188, 189 —
21 Reserved Reserved Reserved Reserved Reserved
22 Reserved Reserved Reserved Reserved Reserved
23–24 Reserved Reserved Reserved Reserved Reserved
25 111 4.0025 5 182, 183, 184, 185, 186, 187, 188, 189 —
26 111 4.0025 5 182, 183, 184, 185, 186, 187, 188, 189 —
27–28 Reserved Reserved Reserved Reserved Reserved
29 111 4.0025 5 182, 183, 184, 185, 186, 187, 188, 189 —
30 81 2.407 25 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 —
31 82 2.414 25 14 —
32 118 5 20 −154 52, 56, 60, 64 —
33 118 5 20 −154 52, 56, 60, 64 —
34 121 5 20 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144 —
35 Reserved Reserved Reserved Reserved Reserved
36 116 5 40 −154 36, 44 —
37 119 5 40 −154 52, 60 —
38 Reserved Reserved Reserved Reserved Reserved
39 122 5 40 100, 108, 116, 124, 132, 140 —
40 Reserved Reserved Reserved Reserved Reserved
41 117 5 40 −154 40, 48 —
42 120 5 40 −154 56, 64 —
43 Reserved Reserved Reserved Reserved Reserved
44 123 5 40 104, 112, 120, 128, 136, 144 —
45 Reserved Reserved Reserved Reserved Reserved
46 104 4 40 184, 192 —
47–50 Reserved Reserved Reserved Reserved Reserved
51 105 4 40 188, 196 —
52–55 Reserved Reserved Reserved Reserved Reserved
56 83 2.407 40 1–9 —
57 84 2.407 40 5–13 —
58 121 5 20 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144 —
59 180 56.16 2160 1, 2, 3, 4 —
60 181 56.16 4320 9, 10, 11 —
61 182 56.16 6480 17, 18 —
62 183 56.16 8640 25 —
63–127 Reserved Reserved Reserved Reserved Reserved
128 128 5 80 −154 — 42, 58, 106, 122, 138
129 129 5 160 −154 — 50, 114
130 130 5 80 −154 — 42, 58, 106, 122, 138
131–255 Reserved Reserved Reserved Reserved Reserved

NOTE 1—The channel spacing for operating classes 34–55 specifies the maximum radio bandwidth of one frequency segment In these regulatory domains, the AP operates in a 20/40 MHz BSS, and the operating channel width of a non-AP STA is either

NOTE 2—The channel spacing for operating classes 128, 129, and 130 specifies the maximum radio bandwidth of one frequency segment.

Table E-4—Global operating classes

Operating class Nonglobal operating class(es) (see NOTE 3) Channel starting frequency (GHz) Channel spacing (MHz) LC IF Channel starting frequency (MHz) Channel set Channel number of the center frequency
1–49 — Reserved Reserved Reserved —
50 E-5-22, E-5-26 0.902 1 — Reserved
51 E-5-23, E-5-27 0.902 2 — Reserved
52 E-5-24, E-5-28 0.902 4 — Reserved
53 E-5-25, E-5-29 0.902 8 — Reserved
54 E-5-32 0.902 1 — Reserved
55 E-5-33 0.902 2 — Reserved
56 E-5-34 0.902 4 — Reserved
57 E-5-35 0.840 2 — Reserved
58 E-5-36 0.840 4 — Reserved
59 E-5-37 0.840 8 — Reserved
60 E-5-38 0.840 16 — Reserved
61 E-5-20 0.902 2 — Reserved
62 E-5-21 0.902 4 — Reserved
63 E-5-31 0.902 8 — Reserved
64 E-5-9, E-5-10 0.9225 2 — Reserved
65 E-5-11, E-5-12 0.9065 4 — Reserved
66 E-5-6, E-5-17 0.863 1 — Reserved
67 E-5-7, E-5-19 0.863 2 — Reserved
68 E-5-1, E-5-18 0.902 1 — Reserved
69 E-5-2, E-5-20 0.902 2 — Reserved
70 E-5-3, E-5-21 0.902 4 — Reserved
71 E-5-4 0.902 8 — Reserved
72 E-5-5 0.902 16 — Reserved
73 E-5-8 0.9165 1 — Reserved
74 E-5-14 0.9175 1 — Reserved
75 E-5-15 0.9175 2 — Reserved
76 E-5-16 0.9175 4 — Reserved
77 E-5-30 0.9014 1 — Reserved
78–80 — Reserved Reserved Reserved —
81 E-1-12, E-2-4, E-3-30, E-6-7 2.407 25 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 —
82 E-3-31 2.414 25 14 —
83 E-1-32, E-2-11, E-3-56, E-6-8 2.407 40 1, 2, 3, 4, 5, 6, 7, 8, 9 —
84 E-1-33, E-2-12, E-3-57, E-6-9 2.407 40 5, 6, 7, 8, 9, 10, 11, 12, 13 —
85 — — 6, 7, 8 — —
86 — — 12, 14, 16 — —
87 — — 24, 28, 32 — —
88–93 — Reserved Reserved Reserved Reserved
94 E-1-13 3 20 133, 137 —
95 E-1-14 3 10 132, 134, 136, 138 —
96 E-1-15 3.0025 5 131, 132, 133, 134, 135, 136, 137, 138 —
97–100 — Reserved Reserved Reserved Reserved
101 E-1-10,11 4.85 20 21, 25 —
102 E-1-8,9 4.89 10 11, 13, 15, 17, 19 —
103 E-1-6,7 4.9375 5 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 —
104 E-3-46,47,48,49,50 4 40 184, 192 —
105 E-3-51,52,53,54,55 4 40 188, 196 —
106 — 4 20 191, 195 —
107 — 4 10 189, 191, 193, 195, 197 —
108 — 4.0025 5 188, 189, 190, 191, 192, 193, 194, 195, 196, 197 —
109 E-3-7,8,9,10,11 4 20 184, 188, 192, 196 —
110 E-3-16,17,18,19,20 4 10 183, 184, 185, 186, 187, 188, 189 —
111 E-3-25,26,27,28,29 4.0025 5 182, 183, 184, 185, 186, 187, 188, 189 —
112 Reserved Reserved Reserved Reserved Reserved
113 Reserved Reserved Reserved Reserved Reserved
114 Reserved Reserved Reserved Reserved Reserved
115 E-1-1, E-2-1, E-3-1, E-6-1 5 20 −154 36, 40, 44, 48 —
116 E-1-22, E-2-5, E-3-36, E-6-4 5 40 −154 36, 44 —
117 E-1-27, E-2-8, E-3-41 5 40 −154 40, 48 —
118 E-1-2, E-2-2, E-3-32,33, E-6-2 5 20 −154 52, 56, 60, 64 —
119 E-1-23, E-2-6, E-3-37,38, E-6-5 5 40 −154 52, 60 —
120 E-1-28, E-2-9, E-3-42,43 5 40 −154 56, 64 —
121 E-1-4, E-2-3, E-3-34,35,58 5 20 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144 —
122 E-1-24, E-2-7, E-3-39,40 5 40 100, 108, 116, 124, 132, 140 —
123 E-1-29, E-2-10, E-3-44,45 5 40 104, 112, 120, 128, 136, 144 —
124 E-1-3 5 20 149, 153, 157, 161 —
125 E-1-5, E-2-17, E-6-3 5 20 149, 153, 157, 161, 165, 169, 173, 177 —
126 E-1-25,26, E-6-6 5 40 149, 157, 165, 173 —
127 E-1-30,31 5 40 153, 161, 169, 177 —
128 E-1-128, E-2-128, E-3-128, E-6-128 5 80 −154 — 42, 58, 106, 122, 138, 155, 171
129 E-1-129, E-2-129, E-3-129, E-6-129 5 160 −154 — 50, 114, 163
130 E-1-130, E-2-130, E-3-130, E-6-130 5 80 −154 — 42, 58, 106, 122, 138, 155, 171
131 — 5.950 20 −181 1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57, 61, 65, 69, 73, 77, 81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121, 125, 129, 133, 137, 141, 145, 149, 153, 157, 161, 165, 169, 173, 177, 181, 185, 189, 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, 233 —
132 — 5.950 40 −181 — 3, 11, 19, 27, 35, 43, 51, 59, 67, 75, 83, 91, 99, 107, 115, 123, 131, 139, 147, 155, 163, 171, 179, 187, 195, 203, 211, 219, 227
133 — 5.950 80 −181 — 7, 23, 39, 55, 71, 87, 103, 119, 135, 151, 167, 183, 199, 215
134 — 5.950 160 −181 — 15, 47, 79, 111, 143, 175, 207
135 — 5.950 80 −181 — 7, 23, 39, 55, 71, 87, 103, 119, 135, 151, 167, 183, 199, 215
136 — 5.925 20 — 2
137 — 5.950 320 — 31, 63, 95, 127, 159, 191
138–179 — Reserved Reserved Reserved Reserved
180 E-1-34, E-2-18, E-3-59 56.16 2160 1, 2, 3, 4, 5, 6 —
181 E-6-10 56.16 2160 2, 3 —
182 E-6-11 56.70 1080 35, 36, 37, 38 —
183 E-6-12 42.66 540 1, 2, 3, 4, 5, 6, 7, 8 —
184 E-6-13 47.52 540 9, 10 —
185 E-6-14 42.93 1080 11,12,13,14 —
186 E-6-15 47.79 1080 15 —
187 E-1-37, E-2-21, E-3-62 56.16 4320 9, 10, 11, 12, 13 —
188 E-1-38, E-2-22, E-3-63 56.16 6480 17, 18, 19, 20 —
189 E-1-39, E-2-23, E-3-64 56.16 8640 25, 26, 27 —
190–191 — Reserved Reserved Reserved —
192–254 — Vendor specific Vendor specific Vendor specific —
255 — Reserved Reserved Reserved —

NOTE 1—The channel spacing for operating classes 116, 117, 119, 120, 122, 123, 126, and 127 specifies the maximum radio bandwidth of one frequency segment In these operating classes, the AP operates in a 20/40 MHz BSS, and the operating channel width for a non-AP STA is either 20 MHz or 40 MHz.

NOTE 2—The channel spacing for operating classes 128, 129, and 130 specifies the maximum radio bandwidth of one frequency segment.

NOTE 3—E-x-y refers to operating class y in Table E-x.

Table E-5—S1G operating classes

S1G operating Class Global operating Class (see Table E-4) Channel starting frequency (GHz) Channel spacing (MHz) Channel number of the center frequency CCA Level Classification
1 (United States and its territories) 68 0.902 1 1, 3, 37, 39, 41, 43, 45, 47, 49, 51 Type 1
(902–904 MHz, 920–928 MHz)
5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35 Type 2
(904–920 MHz)
2 (United States and its territories) 69 0.902 2 2, 38, 42, 46, 50 Type 1
(902–904 MHz, 920–928 MHz)
6, 10, 14, 18, 22, 26, 30, 34 Type 2
(904–920 MHz)
3 (United States and its territories) 70 0.902 4 40, 48 Type 1
(920–928 MHz)
8, 16, 24, 32 Type 2
(904–920 MHz)
4 (United States and its territories) 71 0.902 8 44 Type 1
(920–928 MHz)
12, 28 Type 2
(904–920 MHz)
5 (United States and its territories) 72 0.902 16 20 Type 2
(904–920 MHz)
6 (Europe) 66 0.863 1 1, 3, 5, 7, 9 Type 1
(863–868 MHz)
7 (Europe) 67 0.863 2 6 Type 1
(863–868 MHz)
8 (Japan) 73 0.9165 1 9, 13,15, 17, 19, 21 Type 1
(920.5–927.5 MHz)
9 64 0.9225 2 2, 6 Type 1
(922.5–926.5 MHz)
10 64 0.9225 2 4, 8 Type 1
(923.5–927.5 MHz)
11 65 0.9065 4 36 Type 1
(922.5–926.5 MHz)
12 65 0.9065 4 38 Type 1
(923.5–927.5 MHz)
13 — Reserved Reserved Reserved Reserved
14 (Korea) 74 0.9175 1 1, 3, 5, 7, 9, 11, 18, 20, 22, 24 Type 1
(917.5–931 MHz)
15 (Korea) 75 0.9175 2 2, 6, 10, 19, 23 Type 1
(917.5–931 MHz)
16 (Korea) 76 0.9175 4 8 Type 1
(917.5–923.5 MHz)
17 (Singapore) 66 0.863 1 7, 9, 11 Type 1
(866–869 MHz)
18 (Singapore) 68 0.902 1 31, 33, 35, 37, 39, 41, 43, 45 Type 1
(917–925 MHz)
19 (Singapore) 67 0.863 2 10 Type 1
(866–869 MHz)
20 (Singapore) 61 0.902 2 32, 36, 40, 44 Type 1
(917–925 MHz)
21 (Singapore) 62 0.902 4 34, 42 Type 1
(917–925 MHz)
22 (Australia) 50 0.902 1 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50 Type 1
(915–928 MHz)
23 (Australia) 51 0.902 2 29, 33, 37, 41, 45, 49 Type 1
(915–928 MHz)
24 (Australia) 52 0.902 4 31, 39, 47 Type 1
(915–928 MHz)
25 (Australia) 53 0.902 8 35, 43 Type 1
(915–928 MHz)
26 (New Zealand) 50 0.902 1 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50 Type 1
(915–928 MHz)
27 (New Zealand) 51 0.902 2 29, 33, 37, 41, 45, 49 Type 1
(915–928 MHz)
28 (New Zealand) 52 0.902 4 31, 39, 47 Type 1
(915–928 MHz)
29 (New Zealand) 53 0.902 8 35, 43 Type 1
(915–928 MHz)
30 (Europe) 77 0.9014 1 31, 33, 35 Type 1
(916.4–919.4 MHz)
31 (Singapore) 63 0.902 8 38 Type 1
(917–925 MHz)
32 (Taiwan) 54 0.902 1 38, 40, 42, 44 Type 1
(920–925 MHz)
33 (Taiwan) 55 0.902 2 39, 43 Type 1
(920–925 MHz)
34 (Taiwan) 56 0.902 4 41 Type 1
(920–925 MHz)
35 (United States and its territories) 57 0.840 2 128, 132, 136, 140, 144, 148, 152, 156, 160, 164, 168, 172 Type 1
(902–928 MHz)
36 (United States and its territories) 58 0.840 4 130, 138, 146, 154, 162, 170 Type 1
(902–928 MHz)
37 (United States and its territories) 59 0.840 8 134, 150, 166 Type 1
(902–928 MHz)
38 (United States and its territories) 60 0.840 16 142 Type 1
(902–928 MHz)

Table E-6—Operating classes in China

Operating class Global operating class (see Table E-4) Channel starting frequency (GHz) Channel spacing (MHz) Channel set Channel number of the center frequency
1 115 5 20 36, 40, 44, 48 —
2 118 5 20 52, 56, 60, 64 —
3 125 5 20 149, 153, 157, 161, 165 —
4 116 5 40 36, 44 —
5 119 5 40 52, 60 —
6 126 5 40 149, 157 —
7 81 2.407 25 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 —
8 83 2.407 40 1-9 —
9 84 2.407 40 5-13 —
10 181 56.16 2160 2, 3 —
11 182 56.70 1080 35, 36, 37, 38 —
12 183 42.66 540 1, 2, 3, 4, 5, 6, 7, 8 —
13 184 47.52 540 9, 10 —
14 185 42.93 1080 11, 12, 13, 14 —
15 186 47.79 1080 15 —
16–127 Reserved Reserved Reserved Reserved Reserved
128 128 5 80 — 42, 58, 155
129 129 5 160 — 50
130 130 5 80 — 42, 58, 155
131–255 Reserved Reserved Reserved Reserved Reserved

NOTE 1—The channel spacing for operating classes 4 to 6 specifies the maximum radio bandwidth of one frequency segment In these operating classes, the AP operates in a 20/40 MHz BSS, and the operating channel width for a non-AP STA is either 20 MHz or 40 MHz.
NOTE 2—The channel spacing for operating classes 128, 129, and 130 specifies the maximum radio bandwidth of one frequency segment.

References

[1] 80211-2024.pdf
[2] 802.11be-2023.pdf