rtlwifi compilation error

Hi,

I am using Ubuntu 16.04 LTS on my computer Lenovo thinkpad S5. The wifi hardware is rtl8822be.

I found it unable to enable wifi, so I download the official software for hardware driver (I have tried many other methods but all failed).

To compile the driver, in "rtlwifi-next" folder, when type "make", the following error reported:

make -C /lib/modules/4.13.0-31-generic/build M=/home/xiaodongli/software/rtlwifi-next-old modules
make[1]: Entering directory '/usr/src/linux-headers-4.13.0-31-generic'
  CC [M] /home/xiaodongli/software/rtlwifi-next-old/rtl8188ee/trx.o
/home/xiaodongli/software/rtlwifi-next-old/rtl8188ee/trx.c: In function rtl88ee_rx_query_desc
/home/xiaodongli/software/rtlwifi-next-old/rtl8188ee/trx.c:447:22: error: RX_FLAG_40MHZ undeclared (first use in this function)
   rx_status->flag |= RX_FLAG_40MHZ;
                      ^
/home/xiaodongli/software/rtlwifi-next-old/rtl8188ee/trx.c:447:22: note: each undeclared identifier is reported only once for each function it appears in
/home/xiaodongli/software/rtlwifi-next-old/rtl8188ee/trx.c:450:22: error: RX_FLAG_HT undeclared (first use in this function)
   rx_status->flag |= RX_FLAG_HT;
                      ^
scripts/Makefile.build:308: recipe for target '/home/xiaodongli/software/rtlwifi-next-old/rtl8188ee/trx.o' failed
make[3]: *** [/home/xiaodongli/software/rtlwifi-next-old/rtl8188ee/trx.o] Error 1
scripts/Makefile.build:581: recipe for target '/home/xiaodongli/software/rtlwifi-next-old/rtl8188ee' failed
make[2]: *** [/home/xiaodongli/software/rtlwifi-next-old/rtl8188ee] Error 2
Makefile:1550: recipe for target '_module_/home/xiaodongli/software/rtlwifi-next-old' failed
make[1]: *** [_module_/home/xiaodongli/software/rtlwifi-next-old] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-4.13.0-31-generic'
Makefile:100: recipe for target 'all' failed
make: *** [all] Error 2

Have anybody encountered the same problem? Any suggestion about how to solve this?

Thank you in advance!